MIC23356 Evaluation Board User's Guide 2018 Microchip Technology Inc. DS50002834A Note the following details of the code protection feature on Microchip devices: * Microchip products meet the specification contained in their particular Microchip Data Sheet. * Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used in the intended manner and under normal conditions. * There are dishonest and possibly illegal methods used to breach the code protection feature. All of these methods, to our knowledge, require using the Microchip products in a manner outside the operating specifications contained in Microchip's Data Sheets. Most likely, the person doing so is engaged in theft of intellectual property. * Microchip is willing to work with the customer who is concerned about the integrity of their code. * Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code. Code protection does not mean that we are guaranteeing the product as "unbreakable." Code protection is constantly evolving. We at Microchip are committed to continuously improving the code protection features of our products. Attempts to break Microchip's code protection feature may be a violation of the Digital Millennium Copyright Act. If such acts allow unauthorized access to your software or other copyrighted work, you may have a right to sue for relief under that Act. Information contained in this publication regarding device applications and the like is provided only for your convenience and may be superseded by updates. It is your responsibility to ensure that your application meets with your specifications. MICROCHIP MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND WHETHER EXPRESS OR IMPLIED, WRITTEN OR ORAL, STATUTORY OR OTHERWISE, RELATED TO THE INFORMATION, INCLUDING BUT NOT LIMITED TO ITS CONDITION, QUALITY, PERFORMANCE, MERCHANTABILITY OR FITNESS FOR PURPOSE. Microchip disclaims all liability arising from this information and its use. Use of Microchip devices in life support and/or safety applications is entirely at the buyer's risk, and the buyer agrees to defend, indemnify and hold harmless Microchip from any and all damages, claims, suits, or expenses resulting from such use. No licenses are conveyed, implicitly or otherwise, under any Microchip intellectual property rights unless otherwise stated. Trademarks Microchip received ISO/TS-16949:2009 certification for its worldwide headquarters, design and wafer fabrication facilities in Chandler and Tempe, Arizona; Gresham, Oregon and design centers in California and India. The Company's quality system processes and procedures are for its PIC(R) MCUs and dsPIC(R) DSCs, KEELOQ(R) code hopping devices, Serial EEPROMs, microperipherals, nonvolatile memory and analog products. In addition, Microchip's quality system for the design and manufacture of development systems is ISO 9001:2000 certified. SQTP is a service mark of Microchip Technology Incorporated in the U.S.A. QUALITYMANAGEMENTSYSTEM CERTIFIEDBYDNV The Microchip name and logo, the Microchip logo, AnyRate, AVR, AVR logo, AVR Freaks, BitCloud, chipKIT, chipKIT logo, CryptoMemory, CryptoRF, dsPIC, FlashFlex, flexPWR, Heldo, JukeBlox, KeeLoq, Kleer, LANCheck, LINK MD, maXStylus, maXTouch, MediaLB, megaAVR, MOST, MOST logo, MPLAB, OptoLyzer, PIC, picoPower, PICSTART, PIC32 logo, Prochip Designer, QTouch, SAM-BA, SpyNIC, SST, SST Logo, SuperFlash, tinyAVR, UNI/O, and XMEGA are registered trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. ClockWorks, The Embedded Control Solutions Company, EtherSynch, Hyper Speed Control, HyperLight Load, IntelliMOS, mTouch, Precision Edge, and Quiet-Wire are registered trademarks of Microchip Technology Incorporated in the U.S.A. Adjacent Key Suppression, AKS, Analog-for-the-Digital Age, Any Capacitor, AnyIn, AnyOut, BodyCom, CodeGuard, CryptoAuthentication, CryptoAutomotive, CryptoCompanion, CryptoController, dsPICDEM, dsPICDEM.net, Dynamic Average Matching, DAM, ECAN, EtherGREEN, In-Circuit Serial Programming, ICSP, INICnet, Inter-Chip Connectivity, JitterBlocker, KleerNet, KleerNet logo, memBrain, Mindi, MiWi, motorBench, MPASM, MPF, MPLAB Certified logo, MPLIB, MPLINK, MultiTRAK, NetDetach, Omniscient Code Generation, PICDEM, PICDEM.net, PICkit, PICtail, PowerSmart, PureSilicon, QMatrix, REAL ICE, Ripple Blocker, SAM-ICE, Serial Quad I/O, SMART-I.S., SQI, SuperSwitcher, SuperSwitcher II, Total Endurance, TSHARC, USBCheck, VariSense, ViewSpan, WiperLock, Wireless DNA, and ZENA are trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. Silicon Storage Technology is a registered trademark of Microchip Technology Inc. in other countries. GestIC is a registered trademark of Microchip Technology Germany II GmbH & Co. KG, a subsidiary of Microchip Technology Inc., in other countries. All other trademarks mentioned herein are property of their respective companies. (c) 2018, Microchip Technology Incorporated, All Rights Reserved. ISBN: 978-1-5224-4006-2 == ISO/TS16949== 2018 Microchip Technology Inc. DS50002834A-page 2 MIC23356 EVALUATION BOARD USER'S GUIDE Table of Contents Preface ........................................................................................................................... 5 Introduction............................................................................................................ 5 Document Layout .................................................................................................. 5 Conventions Used in this Guide ............................................................................ 6 Recommended Reading........................................................................................ 7 The Microchip Website.......................................................................................... 7 Customer Support ................................................................................................. 7 Document Revision History ................................................................................... 7 Chapter 1. Product Overview 1.1 Introduction ..................................................................................................... 8 1.2 MIC23356 Short Overview ............................................................................. 8 1.3 What is the MIC23356 Evaluation Board? ..................................................... 9 1.4 Contents of the MIC23356 Evaluation Board Kit ............................................ 9 Chapter 2. Installation and Operation 2.1 Introduction ................................................................................................... 10 2.2 Features ....................................................................................................... 11 2.3 Getting Started ............................................................................................. 11 2.3.1 Power Input and Output Connection ......................................................... 11 Chapter 3. GUI Installation and Operation 3.1 Getting Started ............................................................................................. 16 3.1.1 Required Software ..................................................................................... 16 3.1.2 Required Hardware ................................................................................... 16 3.2 Graphical User Interface Installation ............................................................ 16 3.3 I2C Monitor Graphical User Interface Uninstall ............................................ 19 Chapter 4. GUI Description 4.1 Introduction ................................................................................................... 20 4.2 The Graphical User Interface ....................................................................... 21 4.2.1 Device Menu ............................................................................................. 21 4.2.2 File Menu ................................................................................................... 21 4.2.3 Settings Menu ........................................................................................... 21 4.2.4 I2C Monitor Status and Control Bar .......................................................... 21 4.2.5 I2C Generic Register View ........................................................................ 22 4.2.6 MIC23356 I2C Programmable Features .................................................... 23 4.2.7 MIC23356 I2C Diagnostic ......................................................................... 25 Appendix A. Schematic and Layouts A.1 Introduction .................................................................................................. 27 A.2 Board - Schematic ....................................................................................... 28 2018 Microchip Technology Inc. DS50002834A-page 3 A.3 Board - Top Silk .......................................................................................... 29 A.4 Board - Top Copper and Silk ....................................................................... 29 A.5 Board - Top Copper .................................................................................... 30 A.6 Board - Middle Layer 1 ................................................................................ 30 A.7 Board - Middle layer 2 ................................................................................. 31 A.8 Board - Bottom Copper ............................................................................... 31 A.9 Board - Bottom Copper and Silk ................................................................. 32 A.10 Board - Bottom Silk ................................................................................... 32 Appendix B. Bill of Materials (BOM) Appendix C. MIC23356 Internal Registers C.1 Register MAP and I2C programmability ...................................................... 35 Worldwide Sales and Service .................................................................................... 40 2018 Microchip Technology Inc. DS50002834A-page 4 MIC23356 EVALUATION BOARD USER'S GUIDE Preface NOTICE TO CUSTOMERS All documentation becomes dated, and this manual is no exception. Microchip tools and documentation are constantly evolving to meet customer needs, so some actual dialogs and/or tool descriptions may differ from those in this document. Please refer to our website (www.microchip.com) to obtain the latest documentation available. Documents are identified with a "DS" number. This number is located on the bottom of each page, in front of the page number. The numbering convention for the DS number is "DSXXXXXA", where "XXXXX" is the document number and "A" is the revision level of the document. For the most up-to-date information on development tools, see the MPLAB(R) IDE online help. Select the Help menu, and then Topics to open a list of available on-line help files. INTRODUCTION This chapter contains general information that will be useful to know before using the MIC23356 Evaluation Board. Items discussed in this chapter include: * * * * * * Document Layout Conventions Used in this Guide Recommended Reading The Microchip Website Customer Support Document Revision History DOCUMENT LAYOUT This document describes how to use the MIC23356 Evaluation Board as a development tool. The manual layout is as follows: * Chapter 1. "Product Overview" - Important information about the MIC23356. * Chapter 2. "Installation and Operation" - Includes instructions on how to get started with the MIC23356 Evaluation Board and a description of each function. * Chapter 3. "GUI Installation and Operation" - Includes instructions on how to install the Graphical User Interface. * Chapter 4. "GUI Description" - Describes the items in the Graphical User Interface * Appendix A. "Schematic and Layouts" - Shows the schematic and layout diagrams for the MIC23356. * Appendix B. "Bill of Materials (BOM)" - Lists the parts used to build the MIC23356 Evaluation Board. * Appendix C. "MIC23356 Internal Registers" - Describes the internal registers. 2018 Microchip Technology Inc. DS50002834A-page 5 Preface CONVENTIONS USED IN THIS GUIDE This manual uses the following documentation conventions: DOCUMENTATION CONVENTIONS Description Arial font: Italic characters Represents Examples Referenced books Emphasized text A window A dialog A menu selection A field name in a window or dialog A menu path MPLAB(R) IDE User's Guide ...is the only compiler... the Output window the Settings dialog select Enable Programmer "Save project before build" A dialog button A tab A number in verilog format, where N is the total number of digits, R is the radix and n is a digit. A key on the keyboard Click OK Click the Power tab 4`b0010, 2`hF1 Italic Courier New Sample source code Filenames File paths Keywords Command-line options Bit values Constants A variable argument Square brackets [ ] Optional arguments Curly brackets and pipe character: { | } Ellipses... Choice of mutually exclusive arguments; an OR selection Replaces repeated text #define START autoexec.bat c:\mcc18\h _asm, _endasm, static -Opa+, -Opa0, 1 0xFF, `A' file.o, where file can be any valid filename mcc18 [options] file [options] errorlevel {0|1} Initial caps Quotes Underlined, italic text with right angle bracket Bold characters N`Rnnnn Text in angle brackets < > Courier New font: Plain Courier New Represents code supplied by user 2018 Microchip Technology Inc. File>Save Press <Enter>, <F1> var_name [, var_name...] void main (void) { ... } DS50002834A-page 6 Preface RECOMMENDED READING This user's guide describes how to use the MIC23356 Evaluation Board. Another useful document is listed below. The following Microchip document is available and recommended as a supplemental reference resource: * MIC23356 Data Sheet - "3A, Step-Down Converter with HyperLight LoadTM and I2C Interface" (DS20006130) THE MICROCHIP WEBSITE Microchip provides online support via our website at www.microchip.com. This website is used as a means to make files and information easily available to customers. Accessible by using your favorite Internet browser, the website contains the following information: * Product Support - Data sheets and errata, application notes and sample programs, design resources, user's guides and hardware support documents, latest software releases and archived software * General Technical Support - Frequently Asked Questions (FAQs), technical support requests, online discussion groups, Microchip consultant program member listing * Business of Microchip - Product selector and ordering guides, latest Microchip press releases, listing of seminars and events, listings of Microchip sales offices, distributors and factory representatives CUSTOMER SUPPORT Users of Microchip products can receive assistance through several channels: * * * * Distributor or Representative Local Sales Office Field Application Engineer (FAE) Technical Support Customers should contact their distributor, representative or field application engineer (FAE) for support. Local sales offices are also available to help customers. A listing of sales offices and locations is included in the back of this document. Technical support is available through the website at: http://www.microchip.com/support. DOCUMENT REVISION HISTORY Revision A (December 2018) * Initial release of this document 2018 Microchip Technology Inc. DS50002834A-page 7 MIC23356 EVALUATION BOARD USER'S GUIDE Chapter 1. Product Overview 1.1 INTRODUCTION This chapter provides an overview of the MIC23356 Evaluation Board and covers the following topics: * MIC23356 Short Overview * What is the MIC23356 Evaluation Board? * Contents of the MIC23356 Evaluation Board Kit 1.2 MIC23356 SHORT OVERVIEW The MIC23356 device is a compact I2C programmable, high-efficiency, 3A continuous current, synchronous step-down regulator. The Constant-ON-Time (COT) control architecture with HyperLight LoadTM (HLL) provides very high efficiency at light loads, while still having ultra-fast transient response. The user can program, via the I2C interface, various parameters, such as: output voltage, ON-time, soft start slope, high-side current limit, HLL or Forced PWM mode of operation. The 2.4V to 5.5V input voltage range, low shutdown and quiescent currents make the MIC23356 ideal for single-cell, Li-Ion, battery-powered applications. An open-drain Power Good (PG) output is provided to indicate when the output voltage is within 9% of regulation and facilitates output voltage monitoring and sequencing. When set in Shutdown mode (EN = GND), the current consumption of MIC23356 is reduced to 1.5 A (typical). The MIC23356 is available in a thermally-efficient, 16-Lead 2.5 x 2.5 x 0.55 mm thin MLF package, with an operating junction temperature range from -40C to +125C. More detailed information regarding the capabilities of the MIC23356 are available in the data sheet. MIC23356 0.35 H 1F VIN 22F EN 2 I C FIGURE 1-1: SVIN VOUT SW VOUT 47F PVIN EN PGND SDA AGND SCL PG PGOOD Typical MIC23356 Step-Down Application. 2018 Microchip Technology Inc. DS50002834A-page 8 Product Overview 1.3 WHAT IS THE MIC23356 EVALUATION BOARD? The MIC23356 Evaluation Board is used to evaluate and demonstrate Microchip Technology's MIC23356 product. This board demonstrates the MIC23356 in a buck converter application supplied from an external voltage source (2.4V-5.5V), with I2C programmed regulated output. The I2C Monitor GUI allows comprehensive control and status reporting with the MIC23356 device. 1.4 CONTENTS OF THE MIC23356 EVALUATION BOARD KIT The MIC23356 Evaluation Board kit includes: * MIC23356 Evaluation Board (ADM00881) * Important Information Sheet. 2018 Microchip Technology Inc. DS50002834A-page 9 MIC23356 EVALUATION BOARD USER'S GUIDE Chapter 2. Installation and Operation 2.1 INTRODUCTION The MIC23356 Evaluation Board has been developed to test the MIC23356 device's capabilities, including loading up to 3A and controlling and monitoring through the USB interface (via I2C Monitor GUI). Pin headers are also fitted for Bode Analysis and external I2C communication. ** Data USB I/F VUSB MCP2221 * EN PG SCL SDA PWR PWR MIC23356 SDA SCL PG EN VOUT VIN * Three way jumper fitted for selection of I VIN 2C pull-up voltage. ** I2C bus (SDA, SCL), EN control and PG status via MCP2221 USB bridge. FIGURE 2-1: MIC23356 Step-Down Regulator with MCP2221 I2C Bridge. 2018 Microchip Technology Inc. DS50002834A-page 10 Installation and Operation 2.2 FEATURES The MIC23356 Evaluation Board has the following features: * * * * * * * * * * * * * * 2.3 Input Voltage Range 2.4V to 5.5V 3A Continuous Output Current Multiple Faults Indication through I2C I2C Programmable: - Output voltage: 0.6V-1.28V, 5 mV resolution - Slew rate: 0.2 ms/V-3.2 ms/V - Switching ON time (frequency) - High-Side current limit: 3.5A - 5A - Enable delay: 0.25 ms-3 ms - Output discharge when disabled High Efficiency (up to 95%) 1.5% Output Voltage Accuracy Overline/Load/Temperature Range Safe Start-Up with Pre-Biased Output Typical 1.5 A Shutdown Supply Current Low Dropout (100% Duty Cycle) Operation Ultra-Fast Transient Response I2C Control up to 3.4 MHz Latch-Off Thermal Shutdown Protection Latch-Off Current Limit Protection Power Good Open-Drain Output GETTING STARTED The MIC23356 Evaluation Board is fully assembled and tested to evaluate and demonstrate the MIC23356 product. This board requires the use of external lab supplies and a PC. The MIC23356 is offered in four different product options, depending on the default settings at power-up, prior to any I2C write operation. The differences among the various product options are described in the MIC23356 data sheet. The Evaluation Board carries the -YFT option, whose default output voltage is 0.6V. All the device options may be fitted on the board, as is. 2.3.1 Power Input and Output Connection 2.3.1.1 POWERING THE MIC23356 EVALUATION BOARD When the board is ready for evaluation, apply positive input voltage to the VIN terminal and the corresponding return to the GND-IN terminal. The maximum input voltage should not exceed 5.5V. An electronic load or resistive load can be used for evaluation. Some electronic loads can sink the programmed current starting from very low output voltage levels during start-up. For a more realistic start-up behavior evaluation, a resistive load or constant resistance is recommended. Connect the positive voltage terminal of the load to the VOUT terminal on the evaluation board and connect the negative or return side of the load to the GND-OUT terminal. If changing the regulator parameters is required or simply to monitor the part, make sure to connect the Micro-USB cable between the Evaluation Board and the PC. Then, install the GUI according to Chapter 3. "GUI Installation and Operation" and follow the indications in Chapter 2. "Installation and Operation" for more extensive evaluation. 2018 Microchip Technology Inc. DS50002834A-page 11 Installation and Operation Note: 2.3.1.2 The inductance associated with long wires on the board input may cause voltage spikes at load stepping or start-up into heavy load. If the spikes exceed the 5.5V maximum input voltage rating, the MIC23356 may fail. This can be prevented by populating a 470 F Electrolytic Capacitor on C8 footprint. BOARD POWER-UP PROCEDURE For the power-up procedure, follow the steps below: 1. Connect the PC, input supply, voltmeter, ammeter and load as shown in Figure 2-2. Set the ammeter on a 10A range. 2. Fit a jumper on the EN position across the J6 header, as marked on the silkscreen. 3. Once the input voltage is greater than 2.35V at the board input (VIN), the device begins to switch. 4. The Voltmeter should now indicate an output voltage according to the preset register values. Adjusting the input voltage and load should not cause the output to vary more than a few mV over the operating range of the converter. 5. Set the input voltage and the load to the desired values, with a maximum of 5.5V on the input voltage and a maximum load of 3A. 6. Adjust the regulator output and monitor the STATUS registers, as described in Chapter 4. "GUI Description". 7. Optionally, for more advanced readings, place Oscilloscope probe 1 in "SW" test point to monitor the switching waveforms and probe 2 on the output header (close to the output capacitors) to measure the AC ripple of the output voltage. Power - Voltmeter Supply + Load CH2 Ammeter (10A) CH1 Oscilloscope I2C Monitor (PC) FIGURE 2-2: MIC23356 Evaluation Board Test Setup. 2018 Microchip Technology Inc. DS50002834A-page 12 Installation and Operation 2.3.1.3 PERFORMANCE EVALUATION The Oscilloscope screen capture in Figure 2-3 displays the MIC23356 switching waveforms during normal operation, when supplied from 5V input at full load (3A). EN 5V/div VOUT 50 mV/div AC coupled SW 5V/div PG 5V/div FIGURE 2-3: Normal Operation at 0.6V Output, 3A Load. 100 Efficiency (%) 90 80 70 60 VIN = 5.0V 50 VIN = 3.3V 40 VIN = 2.5V 30 20 VOUT = 1V 10 0 0.001 FIGURE 2-4: 0.01 0.1 IOUT (A) 1 10 Efficiency vs. IOUT at 1V. 2018 Microchip Technology Inc. DS50002834A-page 13 Installation and Operation 100 Efficiency (%) 90 80 70 60 VIN = 5.0V 50 VIN = 3.3V 40 VIN = 2.5V 30 20 VOUT = 0.6V 10 0 0.001 FIGURE 2-5: 0.01 0.1 IOUT (A) 1 10 Efficiency vs. IOUT at 0.6V. 2.3.1.4 LOOP GAIN MEASUREMENT The MIC23356 Evaluation Board provides injection points and a termination resistor (R12) for AC loop gain measurements. If needed, the value of R12 can be changed to optimize the injection signal level. Inject the oscillator at J9 through the insulation transformer (i.e., across resistor R12). 2.3.1.5 I2C PULL-UP VOLTAGE SELECTION The MIC23356 Evaluation Board is equipped with a jumper for selecting the I2C pull-up supply voltage. The J8 header can be used to select the I2C pull-up voltage to either VUSB or VIN. If a different pull-up voltage is desired, it can be injected into the PWR pin of J2. In this case, make sure that no jumper is installed on header J8, to prevent shorting of the externally injected pull-up voltage to either VUSB or VIN. 2.3.1.6 USING THE MIC23356 EVALUATION BOARD WITH THE EXTERNAL I2C MASTER In order to use the MIC23356 with an external I2C master (like a microcontroller, microprocessor or another I2C master), the on-board MCP2221 must be disabled. To accomplish this, the pull-down resistor R10 must be populated to avoid any interference between the MCP2221 and the external I2C master. Then, the desired I2C master can be connected to J2. If the external I2C master already provides pull-up resistors for the SDA and SCL lines, then the I2C pull-up resistors R6 and R9, present on the MIC23356 Evaluation Board, are not needed and must be removed to prevent pull-up voltage conflicts. 2018 Microchip Technology Inc. DS50002834A-page 14 Installation and Operation 2.3.1.7 STARTING THE MIC23356 WITH A CUSTOM OUTPUT VOLTAGE To power-up the MIC23356 with a custom output voltage, the MIC23356 Evaluation Board must be first powered-up with the MIC23356 disabled (either by placing the EN jumper on the J6 header, SDN position, or applying a Logic `0' voltage on the EN test point). Program it via I2C interface to the desired output voltage and then start it by placing the EN jumper on J6, EN position (or by applying a Logic `1' voltage on the EN test point). The MIC23356 does not retain the set voltage and returns to the default configuration after a power cycle. 2.3.1.8 MIC23356 EVALUATION BOARD ENABLE OPTIONS In order to enable the MIC23356 on the Evaluation Board, three options are provided: 1. The EN jumper placed on the J6 header - by placing a jumper on the EN position as described by the silkscreen and by having EN_INT of register CTRL1 (address 0x00) set to `1', the MIC23356 is enabled. By placing a jumper on the SDN position, the MIC23356 is disabled. The MIC23356 Evaluation Board features a pull-down resistor R3 connected to the EN pin, so, by default, without any jumper connected, the regulator will be disabled. 2. Software controlled - by clearing EN_INT (bit 1) of register CTRL1 (address 0x00), the MIC23356 status is controlled by EN_CON (bit 0) of the CTRL1 register and the EN pin status is ignored. By setting the EN_CON bit, the MIC23356 is enabled and by clearing the EN_CON bit, the MIC23356 is disabled. 3. MCP2221 GPIO control - by checking "Enable GP0 Control" in the I2CMonitor GUI, the EN pin is controlled by the GP0 output of the MCP2221 and by using the "GP0 active" button, the MIC23356 is enabled or disabled. Note: 2.3.1.9 When using MCP2221 GPIO control, remove any low-impedance connection between the EN pin and VIN or GND (e.g., a jumper on the J6 header), as this may cause undefined behavior. PCB LAYOUT CONSIDERATIONS For the best performance with the minimum occupied board space, some proper layout techniques should be applied. First, the input and output capacitors should be placed as close to the MIC23356 as possible and on the same layer as the IC. This will ensure low ripple and lower switching noise. Then, vias must be used under the MIC23356, from its exposed pad to the GND plane, in order to improve heat dissipation. Lastly, the switching node (from the SW pin of the MIC23356 to the inductor) should be as small as possible to decrease EMI emission. 2.3.1.10 BENCH TESTING AT HIGH CURRENTS When testing the MIC23356 device at high-load currents or when checking the overcurrent protection behavior, it may be necessary to remove the series ammeter shown in Figure 2-2 or to replace it with a very low-value shunt resistor. This is because the internal resistance of many Digital Multimeters (DMMs) used for current measurements is generally too high. 2.3.1.11 THERMAL CONSIDERATIONS The MIC23356 Junction-to-Ambient Thermal Resistance JA, as measured on the Evaluation Board, is approximately +45C/W. Depending on the loading conditions, ambient temperature, and device settings, the junction temperature might exceed the rated operating limit of +125C due to internal power dissipation. Continuous operation above the maximum operating limits stated in the data sheet should be avoided. 2018 Microchip Technology Inc. DS50002834A-page 15 MIC23356 EVALUATION BOARD USER'S GUIDE Chapter 3. GUI Installation and Operation 3.1 GETTING STARTED In order to install, use and evaluate the product, several software and hardware tools are required. 3.1.1 * * * Required Software I2C Monitor Graphical User Interface (minimum v.3.1.2) Microsoft(R).NET Framework 4.5 or higher Adobe Acrobat Reader 3.1.2 Required Hardware * MIC23356 Evaluation Board * USB-to-micro-USB Cable 3.2 GRAPHICAL USER INTERFACE INSTALLATION The following steps describe how to install the I2C Monitor Graphical User Interface: 1. If Microsoft(R).NET Framework is already installed, go to Step 3. If not, download Microsoft(R).NET Framework from www.microsoft.com and follow the installation instructions. 2. If Adobe Acrobat Reader is already installed, go to Step 3. If not, download Adobe Acrobat Reader from http://get.adobe.com/reader/ and follow the installation instructions. 3. Download the I2C Monitor Graphical User Interface (minimum v.3.1.2) archive from www.microchip.com/MIC23356, under "Documentation&Software". 4. Unzip the I2C Monitor Graphical User Interface archive, which contains the setup.exe file. Note: If an older version or a corrupted version of the current I2C Monitor Graphical User Interface is already installed on the computer, see Section 3.3 "I2C Monitor Graphical User Interface Uninstall" before proceeding with the installation. 5. Double click the setup.exe file to open the InstallShield Wizard window and wait for the extraction to complete. If required, the installation can be stopped by pressing the Cancel button. 2018 Microchip Technology Inc. DS50002834A-page 16 GUI Installation and Operation 6. In the Welcome to the InstallShield Wizard for I2CMonitor window, click the Next button to start the installation. FIGURE 3-1: Starting the I2C Monitor Graphical User Interface Installation. 7. The installation path can be changed, although it is recommended to keep the default path. Click Next to continue. FIGURE 3-2: 2018 Microchip Technology Inc. Selecting the Destination Folder. DS50002834A-page 17 GUI Installation and Operation 8. In the Ready to Install the Program window, click the Install button and wait for the application to proceed with the installation. The progress can be observed in the "Status" bar. . FIGURE 3-3: 2018 Microchip Technology Inc. Installing the I2C Monitor Graphical User Interface. DS50002834A-page 18 GUI Installation and Operation 9. Once the installation is complete, leave the "Launch the program" box checked to automatically start the I2C Monitor GUI, or deselect this check box to start the GUI at a later stage. Click Finish to end the installation. To start the GUI at a later stage, either click the desktop icon or browse to Windows Start>All Programs>Microchip>I2C Monitor. FIGURE 3-4: 3.3 The Installation Complete Window. I2C MONITOR GRAPHICAL USER INTERFACE UNINSTALL In order to install a new version of the I2C Monitor Graphical User Interface, any previous version or corrupted version should be removed from the computer. To uninstall, go to Windows Start>Control Panel>Uninstall a program>I2CMonitor. The I2C Monitor GUI will automatically close once the uninstallation process is complete. FIGURE 3-5: 2018 Microchip Technology Inc. Uninstalling the I2C Monitor Graphical User Interface. DS50002834A-page 19 MIC23356 EVALUATION BOARD USER'S GUIDE Chapter 4. GUI Description 4.1 INTRODUCTION This chapter describes how to use the I2C Monitor Graphical User Interface, using the MIC23356 Evaluation Board included in the kit. NOTICE This chapter provides information regarding the use of the GUI only in the case of the MIC23356 device. For other devices using the I2C Monitor Graphical User Interface, see their specific Data Sheets and User's Guides. Device Menu I2C Monitor Status and Control Bar I2C Generic Register View MIC23356 I2C Programmable Features Status Bar FIGURE 4-1: MIC23356 I2C Diagnostic MIC23356 Progress Bar Control by MCP2221 GP0 output I2C Monitor Graphical User Interface Main Window - MIC23356 View. 2018 Microchip Technology Inc. DS50002834A-page 20 GUI Description 4.2 THE GRAPHICAL USER INTERFACE The following sections describe the items in the Graphical User Interface. 4.2.1 Device Menu The Device drop-down menu allows the user to select the device to be evaluated. If an evaluation (or added custom) board is used, the profile will automatically change to the preselected profile. 4.2.2 File Menu The File menu allows the user to save (Save registers to file) the registers of the currently selected device to a file that can then be loaded into the GUI by using the Load registers from file button. The saved file can also be edited (open it with a text editor). FIGURE 4-2: 4.2.3 File Menu. Settings Menu From the Settings menu, add a new custom board to be automatically detected and switch to its profile. To do this, go to Settings>Device descriptors and in the Descriptors window, add the desired "Board" descriptor and select the desired "Device" profile. FIGURE 4-3: 4.2.4 Custom Board Menu. I2C Monitor Status and Control Bar The "Status and Control" bar contains the items in Table 4-1. FIGURE 4-4: 2018 Microchip Technology Inc. I2C Monitor Status and Control Bar. DS50002834A-page 21 GUI Description TABLE 4-1: MONITOR STATUS AND CONTROL BAR Item Description Addr This drop-down menu shows the address of the available devices. Connector This drop-down menu shows the type of connector used to connect the board. ScanAddr This button is used to scan for a valid address. Connect/Disconnect These buttons are used to connect/disconnect the current selected device. Voltage This drop-down menu is used to select the voltage level of the communication when using PICkitTM Serial Analyzer. Rate This drop-down menu is used to select the corresponding communication rate for the device. Pull Ups This drop-down menu is used to activate the internal pull-ups from the PICkit Serial Analyzer. Note 1: Optional. PICkit Serial Analyzer should first be connected on the I2C pin header, on the MIC23356 Evaluation Board. In the "Status and Control" bar the user can choose the hardware tool for the communication with the device and the settings it should allow. In order to connect to a device, the user must follow the steps described in Section 2.3 "Getting Started". After connecting the Micro-USB cable, the user must scan for a valid address. Once a valid address is detected, clicking the Connect button will initialize the connection with the device and the registers will be available for read and write operations. I2C Generic Register View 4.2.5 The I2C Generic Register View area contains the items in Table 4-2. This section of the I2C Monitor GUI is common for any device evaluated. FIGURE 4-5: TABLE 4-2: I2C GENERIC REGISTER VIEW ITEMS Panel Operation Generic Register View Area. Item Register Description This section shows the registers available for read/write operations. Read/Write These buttons are used for single register read/write operations. ReadAll/WriteAll These buttons are used for reading/writing all the available registers. Number of Registers In this section, the user can set the number of available registers for read/write operations. Update This button sets the number of available registers for read/write operations in the register area. Register area This section shows the current status of the registers address and their content. The specific registers for MIC23356 are described in Appendix C. "MIC23356 Internal Registers". 2018 Microchip Technology Inc. DS50002834A-page 22 GUI Description 4.2.6 MIC23356 I2C Programmable Features The MIC23356 I2C "Programmable Features" area contains the items in Table 4-3. FIGURE 4-6: MIC23356 I2C Programmable Features Area - Low Range. FIGURE 4-7: MIC23356 I2C Programmable Features Area - High Range. 2018 Microchip Technology Inc. DS50002834A-page 23 GUI Description TABLE 4-3: MIC23356 I2C Programmable Features Panel/Button Parameters Output Voltage GP0 control Items Description EN Pin/Bit Enable Control This check box allows switching between the I2C controlled device enable (checked) and pin controlled enable (unchecked). Leave this box unchecked to enable by jumper or MCP2221 GP0. Enable Bit This check box sets the MIC23356 enable bit register. Check the box for regulator enabling, uncheck for disabling. This bit value is considered only if EN Pin/Bit Enable Control is checked. Enable Delay This spin box allows setting the available start time delays. Current Limit This spin box allows setting the available high-side current limits in order to obtain the nominal load currents. ON Time This spin box allows setting the available ON-time values, that determine slower (high TON) or faster (lower TON) switching frequencies. Slew Rate This spin box allows setting the available output slew rates. Activate output pull-down when disabled This check box activates automatic output pull-down resistor when the MIC23356 is disabled. Latch off after 4 OverTemp Cycles This check box sets the latch off after four overtemperature (thermal shutdown) cycles. Force PWM This check box sets forced PWM mode, regardless of output loading. Disable 100% Duty Cycle This check box disables 100% duty cycle operation on high side when VIN is close to VOUT. This feature is available only in High Range mode (option MIC23356-SAYFT). Read/Write These buttons are used to read/write the registers that contain the information described above. Voltage This spin box allows setting the available output voltages. If the evaluated chip option is MIC23356-YFT, MIC23356-HAYFT or MIC23356-FAYFT, the Low Range option must be selected. If the evaluated chip is MIC23356-SAYFT, High Range must be selected. Read/Write These buttons are used to read/write the registers that contain the information described above. Enable GP0 Control This check box allows enable control from the MCP2221 GP0 pin. If unchecked, pin GP0 is Tri-State. To enable access to this feature and allow pin enable control, uncheck EN Pin/Bit Enable Control. The enable jumper must first be removed, to prevent short-circuiting GP0 with the jumper. GP0 active This check box sets the state of the MCP2221 GP0 pin. Leave unchecked to disable the MIC23356 through Enable pin, or check the box to enable the MIC23356 regulator. This area of the GUI allows the user to modify the device features. For additional information on the part, refer to the data sheet. 2018 Microchip Technology Inc. DS50002834A-page 24 GUI Description 4.2.7 MIC23356 I2C Diagnostic The MIC23356 Diagnostic area contains the items in Table 4-4. MIC23356 I2C Diagnostic Area. FIGURE 4-8: TABLE 4-4: Panel Status MIC23356 I2C DIAGNOSTIC AREA ITEMS Items Description Power Good This box is checked if the output voltage reaches 91% of its set value. Latched Off This box is checked if the regulator output is latched off, due to four consecutive hiccup events or thermal shutdown. OverTemp Shutdown This box is checked if the MIC23356 enters Thermal Shutdown (Typ. TJ = +165C) Current Limit This box is checked if the high-side sensed current reaches the value set in the "Current Limit" spin box. Soft Start Done This box is checked after successful regulator soft start ramp. 2018 Microchip Technology Inc. Boot Up Error This box is checked if an error occurs while loading the trim and configuration data into the digital core. At successful start-up, this box remains unchecked (clear). Buck Enabled This box indicates the internal state of the regulator, determined by enable commands (via EN pin or I2C) OverTemp Warning This box is checked if the MIC23356 junction temperature exceeds +118C. This does not affect the normal operation of the device. DS50002834A-page 25 GUI Description The MIC23356 I2C Diagnostic area resumes the information contained in the STATUS register. The STATUS register contains latched (Flag) or non-latched (Status) bits. Flag bits are set when the corresponding Fault condition occurs and do not return to zero once the Fault condition ceases. If such a fault occurs, the user can clear the faults by toggling the enable function or power cycling the device. Status bits are set when the corresponding Fault condition has occurred, and return to zero automatically once the Fault condition has ceased. This information is refreshed once every two seconds. Because of this refresh traffic, when using a logic analyzer it is more difficult to synchronize the exact moment of a certain command. In order to simplify this, an auxiliary trigger signal is provided on pin GP2 of the MCP2221. This signal is triggered for each user Read/Write command. TABLE 4-5: STATUS BAR ITEMS Item Description Status Label The status label shows if there is any device connected to the board. Refer to Table 4-6 for a list of possible labels. Progress Bar This bar shows the level of completion for a given command. TABLE 4-6: STATUS LABELS Status Label Description STATUS: Connected! This message is shown when the GUI connects to a device. STATUS: Disconnected! This message is shown when the GUI does not detect a connected device. 2018 Microchip Technology Inc. DS50002834A-page 26 MIC23356 EVALUATION BOARD USER'S GUIDE Appendix A. Schematic and Layouts A.1 INTRODUCTION This appendix contains the following schematic and layouts for the MIC23356 Evaluation Board: * * * * * * * * * Board - Schematic Board - Top Silk Board - Top Copper and Silk Board - Top Copper Board - Middle Layer 1 Board - Middle layer 2 Board - Bottom Copper Board - Bottom Copper and Silk Board - Bottom Silk 2018 Microchip Technology Inc. DS50002834A-page 27 BOARD - SCHEMATIC JP2 J8 J7 9,1 JP2 should be mounted on 1-2 pins J8 R4 U2 PWR HDR-2.54 Male 1x3 C2 C11 4.7uF 10V 0805 4.7uF 10V 0805 DD+ DD+ R8 0R 9 10 VSS 0R DNP PG 0R 5 6 RST R10 R5 VBUS DD+ ID GND DD+ 0R 2 3 7 8 VDD VUSB Shunt 2.54mm 1x2 Handle USB2.0 Micro-B Female EN R11 0R MCP2221A SDA SCL SW J3 J1 R1 C1 J5 1uF 16V 0603 9,1 C9 C8 470uF 16V JP1 J14 C3 22uF 10V 0805 0.1uF 16V 0402 J6 49.9R 0603 U1 SVIN 16 1 PVIN PVIN 12 EN EN SDA SDA R3 1M 0603 JP1 should be mounted on 1-2 pins J6 MIC23356 R9 SDA SCL PWR R7 SCL 2k 0603 PG J15 J17 NT1 Net Tie 0.5mm 0.1uF 16V 0603 10R 0603 1% 100k 0603 J9 J21 TP LOOP Red J19 J18 J2 C6 47uF 10V 1210 DNP 2k 0603 4 3 2 1 2018 Microchip Technology Inc. R6 9,1 10 SCL 9,1 C5 R12 11 Shunt 2.54mm 1x2 Handle HDR-2.54 Male 1x3 L1 350nH 15 14 13 3 2 TP LOOP Red 9,1 J4 J20 TP LOOP Black J13 J12 MIC23356 Evaluation Board User's Guide DS50002834A-page 28 A.2 Schematic and Layouts A.3 BOARD - TOP SILK A.4 BOARD - TOP COPPER AND SILK 2018 Microchip Technology Inc. DS50002834A-page 29 Schematic and Layouts A.5 BOARD - TOP COPPER A.6 BOARD - MIDDLE LAYER 1 2018 Microchip Technology Inc. DS50002834A-page 30 Schematic and Layouts A.7 BOARD - MIDDLE LAYER 2 A.8 BOARD - BOTTOM COPPER 2018 Microchip Technology Inc. DS50002834A-page 31 Schematic and Layouts A.9 BOARD - BOTTOM COPPER AND SILK A.10 BOARD - BOTTOM SILK 2018 Microchip Technology Inc. DS50002834A-page 32 MIC23356 EVALUATION BOARD USER'S GUIDE Appendix B. Bill of Materials (BOM) TABLE B-1: Qty. MIC23356 EVALUATION BOARD - BILL OF MATERIALS (BOM) Reference Description Manufacturer Part Number 1 C1 Ceramic capacitor, 1 F, 16V, 10%, X7R, SMD, 0603 Yageo Corporation CC0603KRX7R7BB105 2 C2, C11 Ceramic capacitor, 4.7 F, 10V, 10%, X7R, SMD, 0805 TDK Corporation C2012X7R1A475K125AC 1 C3 Ceramic capacitor, 0.1 F, 16V, 10%, X7R, SMD, 0402 Murata Electronics North America, Inc. GRM155R71C104KA88D 1 C5 Ceramic capacitor, 47 F, 10V, 20%, X7R, SMD, 1210 Taiyo Yuden Co., Ltd. LMK325B7476MM-TR 1 C6 Ceramic capacitor, 0.1 F, 16V, 10%, X7R, SMD, 0603 AVX Corporation 0603YC104KAT2A 1 C8 Aluminum capacitor, 470 F, 16V, 20%, RAD, P3.5D8H11.5 Nichicon Corporation UVZ1C471MPD 1 C9 Ceramic capacitor, 22 F, 10V, 20%, X7S, SMD, 0805 TDK Corporation C2012X7S1A226M125AC 4 J1, J3, J12, J13 Connector, HDR-2.54, Male, 1x2, Gold, 5.84MH, TH, Vertical FCI 77311-118-02LF 2 J14, J21 Misc, Test Point, Multi Purpose, Mini, Red Keystone Electronics Corp. 5000 3 J17, J18, J20 Misc, Test Point, Multi Purpose, Mini, Black Keystone Electronics Corp. 5001 1 J2 Connector, HDR-2.54, Male, 1x4, Tin, 5.84MH, TH, Vertical FCI 68002-404HLF 4 J4, J5, J15, J19 Connector, TP, PIN, Tin, TH Harwin Plc. H2121-01 2 J6, J8 Connector, HDR-2.54 Male, 1x3, Tin, 5.84MH, TH, Vertical Samtec, Inc. TSW-103-07-T-S 1 J7 Connector, USB 2.0, Micro-B, Female FCI SMD R/A 10118193-0001LF 0 J9 NOT POPULATED FCI 77311-118-02LF 1 L1 Inductor, 350 nH, 3.3A, 20%, SMD, L3.2W3.5H1.5 Coilcraft XEL3515-351 1 PCB1 MIC23356 Evaluation Board - Printed Microchip Circuit Board Technology Inc. 1 R1 Resistor, TKF, 49.9R 1%, 1/10W, SMD, 0603 Panasonic(R) - ECG ERJ-3EKF49R9V 0 R10 NOT POPULATED Panasonic - ECG ERJ-3GSY0R00V 1 R12 Resistor, TKF, 10R 1%, 1/10W, SMD, 0603 Panasonic - ECG ERJ-3EKF10R0V 1 R3 Resistor, TKF, 1M, 1%, 1/10W, SMD, 0603 Panasonic - ECG ERJ-3EKF1004V Note 1: 04-10741-R1 The components listed in this Bill of Materials are representative of the PCB assembly. The released BOM used in manufacturing uses all RoHS-compliant components. 2018 Microchip Technology Inc. DS50002834A-page 33 Bill of Materials (BOM) TABLE B-1: Qty. MIC23356 EVALUATION BOARD - BILL OF MATERIALS (BOM) (CONTINUED) Reference Description Manufacturer 4 R4, R5, R8, R11 Resistor, TKF, 0R 1/10W, SMD, 0603 2 R6, R9 Resistor, TKF, 2 k 1%, 1/10W, SMD, Panasonic - ECG 0603 ERJ-3EKF2001V 1 R7 Resistor, TKF 100 k 1% 1/10W SMD Panasonic - ECG 0603 ERJ-3EKF1003V 1 U1 Microchip Analog Switcher Buck 2.4V to 5.5V MIC23356YFT FTQFN-16 Microchip Technology Inc. MIC23356YFT 1 U2 Microchip Interface USB I2C UART MCP2221A-I/ST TSSOP-14 Microchip Technology Inc. MCP2221A-I/ST Note 1: ERJ-3GSY0R00V The components listed in this Bill of Materials are representative of the PCB assembly. The released BOM used in manufacturing uses all RoHS-compliant components. TABLE B-2: Qty. Panasonic - ECG Part Number BILL OF MATERIALS - MECHANICAL PARTS Reference Description Manufacturer Part Number 2 JP1, JP2 Mechanical HW Jumper, 2.54 mm, 1x2, Phosphor Bronze w/ Handle Jameco Valuepro 2012JH-R 1 LABEL1 Label, Assembly w/Rev Level (Small Modules) Per MTS-0002 -- -- 4 PAD1, PAD2, PAD3, PAD4 Mechanical HW Rubber Pad, Cylindrical, D7.9 H5.3, Black 3M SJ61A11 Note 1: The components listed in this Bill of Materials are representative of the PCB assembly. The released BOM used in manufacturing uses all RoHS-compliant components. 2018 Microchip Technology Inc. DS50002834A-page 34 MIC23356 EVALUATION BOARD USER'S GUIDE Appendix C. MIC23356 Internal Registers REGISTER MAP AND I2C PROGRAMMABILITY C.1 The MIC23356 internal registers are summarized in Table C-1. TABLE C-1: MIC23356 REGISTER MAP Address Register Name 0x00 Control Register (CTRL1) TON<1:0> Reserved 0x01 ILIM EN_DELAY<1:0> EN_INT EN_CON Output Control Register (CTRL2) DIS_100PCT FPWM OT_LATCH PULL_DN SLEW_RATE<3:0> 0x02 Output Voltage Register (VOUT) 0x03 STATUS and FAULT Register (FAULT) VO<7:0> OT_WARN REGISTER C-1: R/W-0 EN_STAT BOOT_ERR SSD HICCUP OT LATCH_OFF PG CTRL1 - CONTROL REGISTER (ADDRESS 0X00) R/W-0 TON R-1 R/W-0 Reserved ILIM R/W-0 R/W-0 EN_DELAY R/W-0 R/W-0 EN_INT EN_CON bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown RC = Read-then-clear bit bit 7-6 TON<7:6>: ON Time bits 00 = Low Frequency 01 = Medium Frequency 10 = High Frequency 11 = Very Fast Frequency bit 5 Reserved bit bit 4 ILIM: High-Side Peak Current Limit bit 0 = 3.5A 1 = 5A bit 3-2 EN_DELAY<3:2>: Enable Delay bits 00 = 250 s 01 = 1 ms 10 = 2 ms 11 = 3 ms bit 1 EN_INT: Enable Bit Register Control bit 0 = Register Controlled 1 = Enable Controlled 2018 Microchip Technology Inc. DS50002834A-page 35 MIC23356 Internal Registers REGISTER C-1: bit 0 CTRL1 - CONTROL REGISTER (ADDRESS 0X00) (CONTINUED) EN_CON: Enable Control bit 0 = Off 1 = On REGISTER C-2: CTRL2 - OUTPUT CONTROL REGISTER (ADDRESS 0X01) R/W-0 R/W-0 R/W-0 R/W-0 DIS_100PCT FPWM OT_LATCH PULLDN R/W-0 R/W-0 R/W-0 R/W-0 SLEW_RATE bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown RC = Read-then-clear bit bit 7 DIS_100PCT: Disable 100% Duty Cycle bit 0 = 100% DC 1 = Disable 100% DC bit 6 FPWM: Force PWM bit 0 = HLL 1 = FPWM bit 5 OT_LATCH: Overtemperature Latch bit 0 = Latch Off Immediately 1 = Latch Off after 4 OT Cycles bit 4 PULLDN: Enable/Disable Regulator Pull-Down When Power Down bit 0 = No Pull Down 1 = Pull Down bit 3-0 SLEW_RATE<3:0>: Step Slew-Rate Time in s/V bits 0000 = 200 0001 = 400 0010 = 600 0011 = 800 0100 = 1000 0101 = 1200 0110 = 1400 0111 = 1600 1000 = 1800 1001 = 2000 1010 = 2200 1011 = 2400 1100 = 2600 1101 = 2800 1110 = 3000 1111 = 3200 2018 Microchip Technology Inc. DS50002834A-page 36 MIC23356 Internal Registers REGISTER C-3: R/W-0 OUTPUT VOLTAGE CONTROL REGISTER (ADDRESS 0X02) R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 VO bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown RC = Read-then-clear bit bit 7-0 VO<7:0>: Output Voltage Control, options YFT, --HAYFT, -FAYFT bits 0x00-0x76 = 0.6V 0x80 = 0.645 0xA0 = 0.805V 0xC0 = 0.965 0xE0 = 1.125V 0x81 = 0.65V 0xA1 = 0.81V 0xC1 = 0.97V 0xE1 = 1.13V 0x82 = 0.655V 0xA2 = 0.815V 0xC2 = 0.975V 0xE2 = 1.135V 0x83 = 0.66V 0xA3 = 0.82V 0xC3 = 0.98V 0xE3 = 1.14V 0x84 = 0.665V 0xA4 = 0.825V 0xC4 = 0.985V 0xE4 = 1.145V 0x85 = 0.67V 0xA5 = 0.83V 0xC5 = 0.99V 0xE5 = 1.15V 0x86 = 0.675V 0xA6 = 0.835V 0xC6 = 0.995V 0xE6 = 1.155V 0x87 = 0.68V 0xA7 = 0.84V 0xC7 = 1V 0xE7 = 1.16V 0x88 = 0.685V 0xA8 = 0.845V 0xC8 = 1.005V 0xE8 = 1.165V 0x89 = 0.69V 0xA9 = 0.85V 0xC9 = 1.01V 0xE9 = 1.17V 0x8A = 0.695V 0xAA = 0.855V 0xCA = 1.015V 0xEA = 1.175V 0x8B = 0.7V 0xAB = 0.86V 0xCB = 1.02V 0xEB = 1.18V 0x8C = 0.705V 0xAC = 0.865V 0xCC = 1.025V 0xEC = 1.185V 0x8D = 0.71V 0xAD = 0.87V 0xCD = 1.03V 0xED = 1.19V 0x8E = 0.715V 0xAE = 0.875V 0xCE = 1.035V 0xEE = 1.195V 0x8F = 0.72V 0xAF = 0.88V 0xCF = 1.04V 0xEF = 1.2V 0x90 = 0.725V 0xB0 = 0.885V 0xD0 = 1.045V 0xF0 = 1.205V 0x91 = 0.73V 0xB1 = 0.89V 0xD1 = 1.05V 0xF1 = 1.21V 0x92 = 0.735V 0xB2 = 0.895V 0xD2 = 1.055V 0xF2 = 1.215V 0x93 = 0.74V 0xB3 = 0.9V 0xD3 = 1.06V 0xF3 = 1.22V 0x94 = 0.745V 0xB4 = 0.905V 0xD4 = 1.065V 0xF4 = 1.225V 0x95 = 0.75V 0xB5 = 0.91V 0xD5 = 1.07V 0xF5 = 1.23V 0x96 = 0.755V 0xB6 = 0.915V 0xD6 = 1.075V 0xF6 = 1.235V 0x77 = 0.6V 0x97 = 0.76V 0xB7 = 0.92V 0xD7 = 1.08V 0xF7 = 1.24V 0x78 = 0.605V 0x98 = 0.765V 0xB8 = 0.925V 0xD8 = 1.085V 0xF8 = 1.245V 0x79 = 0.61V 0x99 = 0.77V 0xB9 = 0.93V 0xD9 = 1.09V 0xF9 = 1.25V 0x7A = 0.615V 0x9A = 0.775V 0xBA = 0.935V 0xDA = 1.095V 0xFA = 1.255V 0x7B = 0.62V 0x9B = 0.78V 0xBB = 0.94V 0xDB = 1.1V 0xFB = 1.26V 0x7C = 0.625V 0x9C = 0.785V 0xBC = 0.945V 0xDC = 1.105V 0xFC = 1.265V 0x7D = 0.63V 0x9D = 0.79V 0xBD = 0.95V 0xDD = 1.11V 0xFD = 1.27V 0x7E = 0.635V 0x9E = 0.795V 0xBE = 0.955V 0xDE = 1.115V 0xFE = 1.275V 0x7F = 0.64V 0x9F = 0.8V 0xBF = 0.96V 0xDF = 1.12V 0xFF = 1.28V 2018 Microchip Technology Inc. DS50002834A-page 37 MIC23356 Internal Registers REGISTER C-3: bit 7-0 OUTPUT VOLTAGE CONTROL REGISTER (ADDRESS 0X02) (CONTINUED) VO<7:0>: Output Voltage Control, option -SAYFT bits 0x00-0x3A = 0.6V 0x40 = 0.65V 0x60 = 0.97V 0x80 = 1.3V 0xA0 = 1.94V 0xC0 = 2.58V 0xE0 = 3.22V 0x41 = 0.66V 0x61 = 0.98V 0x81=1.32V 0xA1 = 1.96V 0xC1 = 2.6V 0x42 = 0.67V 0x62 = 0.99V 0x82 = 1.34V 0xA2 = 1.98V 0xC2 = 2.62V 0xE2 = 3.26V 0x43 = 0.68V 0x63 = 1V 0x83 = 1.36V 0xA3 = 2V 0x44 = 0.69V 0x64 = 1.01V 0x84 = 1.38V 0xA4 = 2.02V 0xC4 = 2.66V 0xE4 = 3.3V 0xE1 = 3.24V 0xC3 = 2.64V 0xE3 = 3.28V 0x45 = 0.7V 0x65 = 1.02V 0x85 = 1.4V 0x46 = 0.71V 0x66 = 1.03V 0x86 = 1.42V 0xA6 = 2.06V 0xC6 = 2.7V 0xA5 = 2.04V 0xC5 = 2.68V 0xE5 = 3.32V 0x47 = 0.72V 0x67 = 1.04V 0x87 = 1.44V 0xA7 = 2.08V 0xC7 = 2.72V 0xE7 = 3.36V 0x48 = 0.73V 0x68 = 1.05V 0x88 = 1.46V 0xA8 = 2.1V 0x49 = 0.74V 0x69 = 1.06V 0x89 = 1.48V 0xA9 = 2.12V 0xC9 = 2.76V 0xE9 = 3.4V 0x4A = 0.75V 0x6A = 1.07V 0x8A = 1.5V 0x4B = 0.76V 0x6B = 1.08V 0x8B = 1.52V 0xAB = 2.16V 0xCB = 2.8V 0xE6 = 3.34V 0xC8 = 2.74V 0xE8 = 3.38V 0xAA = 2.14V 0xCA = 2.78V 0xEA = 3.42V 0xEB = 3.44V 0x4C = 0.77V 0x6C = 1.09V 0x8C = 1.54V 0xAC = 2.18V 0xCC = 2.82V 0xEC = 3.46V 0x4D = 0.78V 0x6D = 1.1V 0x8D = 1.56V 0xAD = 2.2V 0x4E = 0.79V 0x8E = 1.58V 0xAE = 2.22V 0xCE = 2.86V 0xEE = 3.5V 0x6E = 1.11V 0xCD = 2.84V 0xED = 3.48V 0x4F = 0.8V 0x6F=1.12V 0x8F = 1.6V 0x50 = 0.81V 0x70 = 1.13V 0x90 = 1.62V 0xB0 = 2.26V 0xD0 = 2.9V 0xAF = 2.24V 0xCF = 2.88V 0xEF = 3.52V 0x51 = 0.82V 0x71 = 1.14V 0x91 = 1.64V 0xB1 = 2.28V 0xD1 = 2.92V 0xF1 = 3.56V 0x52 = 0.83V 0x72 = 1.15V 0x92 = 1.66V 0xB2 = 2.3V 0x53 = 0.84V 0x73 = 1.16V 0x93 = 1.68V 0xB3 = 2.32V 0xD3 = 2.96V 0xF3 = 3.6V 0x54 = 0.85V 0x74 = 1.17V 0x94 = 1.7V 0x55 = 0.86V 0x75 = 1.18V 0x95 = 1.72V 0xB5 = 2.36V 0xD5 = 3V 0x56 = 0.87V 0x76=1.19V 0x96 = 1.74V 0xB6 = 2.38V 0xD6 = 3.02V 0xF6 = 3.66V 0x57 = 0.88V 0x77 = 1.2V 0x97 = 1.76V 0xB7 = 2.4V 0x58 = 0.89V 0x78 = 1.21V 0x98 = 1.78V 0xB8 = 2.42V 0xD8 = 3.06V 0xF8 = 3.7V 0x59 = 0.9V 0x79 = 1.22V 0x99 = 1.8V 0x5A = 0.91V 0x7A = 1.23V 0x9A = 1.82V 0xBA = 2.46V 0xDA = 3.1V 0x3B = 0.6V 0x5B = 0.92V 0x7B = 1.24V 0x98 = 1.84V 0xBB = 2.48V 0xDB = 3.12V 0xFB = 3.76V 0x3C = 0.61V 0x5C = 0.93V 0x7C = 1.25V 0x9C = 1.86V 0xBC = 2.5V 0x3D = 0.62V 0x5D = 0.94V 0x7D = 1.26V 0x9D = 1.88V 0xBD = 2.52V 0xDD = 3.16V 0xFD = 3.8V 0xD2 = 2.94V 0xF2 = 3.58V 0xB4 = 2.34V 0xD4 = 2.98V 0xF4 = 3.62V 0xF5 = 3.64V 0xD7 = 3.04V 0xF7 = 3.68V 0xB9 = 2.44V 0xD9 = 3.08V 0xF9 = 3.72V 0xFA = 3.74V 0xDC = 3.14V 0xFC = 3.78V 0x3E = 0.63V 0x5E = 0.95V 0x7E = 1.27V 0x9E = 1.9V 0x3F = 0.64V 0x5F = 0.96V 0x7F = 1.28V 0x9F = 1.92V 0xBF = 2.56V 0xDF = 3.2V 2018 Microchip Technology Inc. 0xF0 = 3.54V 0xBE = 2.54V 0xDE = 3.18V 0xFE = 3.82V 0xFF = 3.84V DS50002834A-page 38 MIC23356 Internal Registers REGISTER C-4: STATUS AND FAULT REGISTER (ADDRESS 0X03) R-0 R-0 R-0 R-0 R-0 R-0 R-0 R-0 OT_WARN EN_STAT BOOT_ERR SSD HICCUP OT LATCH_OFF PG bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared x = Bit is unknown RC = Read-then-clear bit bit 7 OT_WARN: Overtemperature Warning bit 0 = No Fault 1 = Fault bit 6 EN_STAT: Buck ON/OFF Control bit 0 = OFF 1 = ON bit 5 BOOT_ERR: Boot-Up Error bit 0 = No Fault 1 = Fault bit 4 SSD: Soft Start Done bit 0 = Ramp not Done 1 = Ramp Done bit 3 HICCUP: Current Limit Hiccup bit 0 = Not in Hiccup 1 = In Hiccup bit 2 OT: Overtemperature bit 0 = No Fault 1 = Fault bit 1 LATCH_OFF: Overcurrent or Overtemperature Output Latch Off bit 0 = No Fault 1 = Fault bit 0 PG: Power Good bit 0 = Power Not Good 1 = Power Good 2018 Microchip Technology Inc. DS50002834A-page 39 Worldwide Sales and Service AMERICAS ASIA/PACIFIC ASIA/PACIFIC EUROPE Corporate Office 2355 West Chandler Blvd. Chandler, AZ 85224-6199 Tel: 480-792-7200 Fax: 480-792-7277 Technical Support: http://www.microchip.com/ support Web Address: www.microchip.com Australia - Sydney Tel: 61-2-9868-6733 India - Bangalore Tel: 91-80-3090-4444 China - Beijing Tel: 86-10-8569-7000 India - New Delhi Tel: 91-11-4160-8631 Austria - Wels Tel: 43-7242-2244-39 Fax: 43-7242-2244-393 China - Chengdu Tel: 86-28-8665-5511 India - Pune Tel: 91-20-4121-0141 Denmark - Copenhagen Tel: 45-4450-2828 Fax: 45-4485-2829 China - Chongqing Tel: 86-23-8980-9588 Japan - Osaka Tel: 81-6-6152-7160 Finland - Espoo Tel: 358-9-4520-820 China - Dongguan Tel: 86-769-8702-9880 Japan - Tokyo Tel: 81-3-6880- 3770 China - Guangzhou Tel: 86-20-8755-8029 Korea - Daegu Tel: 82-53-744-4301 France - Paris Tel: 33-1-69-53-63-20 Fax: 33-1-69-30-90-79 China - Hangzhou Tel: 86-571-8792-8115 Korea - Seoul Tel: 82-2-554-7200 China - Hong Kong SAR Tel: 852-2943-5100 Malaysia - Kuala Lumpur Tel: 60-3-7651-7906 China - Nanjing Tel: 86-25-8473-2460 Malaysia - Penang Tel: 60-4-227-8870 China - Qingdao Tel: 86-532-8502-7355 Philippines - Manila Tel: 63-2-634-9065 China - Shanghai Tel: 86-21-3326-8000 Singapore Tel: 65-6334-8870 China - Shenyang Tel: 86-24-2334-2829 Taiwan - Hsin Chu Tel: 886-3-577-8366 China - Shenzhen Tel: 86-755-8864-2200 Taiwan - Kaohsiung Tel: 886-7-213-7830 Israel - Ra'anana Tel: 972-9-744-7705 China - Suzhou Tel: 86-186-6233-1526 Taiwan - Taipei Tel: 886-2-2508-8600 China - Wuhan Tel: 86-27-5980-5300 Thailand - Bangkok Tel: 66-2-694-1351 Italy - Milan Tel: 39-0331-742611 Fax: 39-0331-466781 China - Xian Tel: 86-29-8833-7252 Vietnam - Ho Chi Minh Tel: 84-28-5448-2100 Atlanta Duluth, GA Tel: 678-957-9614 Fax: 678-957-1455 Austin, TX Tel: 512-257-3370 Boston Westborough, MA Tel: 774-760-0087 Fax: 774-760-0088 Chicago Itasca, IL Tel: 630-285-0071 Fax: 630-285-0075 Dallas Addison, TX Tel: 972-818-7423 Fax: 972-818-2924 Detroit Novi, MI Tel: 248-848-4000 Houston, TX Tel: 281-894-5983 Indianapolis Noblesville, IN Tel: 317-773-8323 Fax: 317-773-5453 Tel: 317-536-2380 Los Angeles Mission Viejo, CA Tel: 949-462-9523 Fax: 949-462-9608 Tel: 951-273-7800 Raleigh, NC Tel: 919-844-7510 New York, NY Tel: 631-435-6000 San Jose, CA Tel: 408-735-9110 Tel: 408-436-4270 Canada - Toronto Tel: 905-695-1980 Fax: 905-695-2078 2018 Microchip Technology Inc. China - Xiamen Tel: 86-592-2388138 China - Zhuhai Tel: 86-756-3210040 Germany - Garching Tel: 49-8931-9700 Germany - Haan Tel: 49-2129-3766400 Germany - Heilbronn Tel: 49-7131-67-3636 Germany - Karlsruhe Tel: 49-721-625370 Germany - Munich Tel: 49-89-627-144-0 Fax: 49-89-627-144-44 Germany - Rosenheim Tel: 49-8031-354-560 Italy - Padova Tel: 39-049-7625286 Netherlands - Drunen Tel: 31-416-690399 Fax: 31-416-690340 Norway - Trondheim Tel: 47-7288-4388 Poland - Warsaw Tel: 48-22-3325737 Romania - Bucharest Tel: 40-21-407-87-50 Spain - Madrid Tel: 34-91-708-08-90 Fax: 34-91-708-08-91 Sweden - Gothenberg Tel: 46-31-704-60-40 Sweden - Stockholm Tel: 46-8-5090-4654 UK - Wokingham Tel: 44-118-921-5800 Fax: 44-118-921-5820 DS50002834A-page 40 08/15/18