UG110 Rev 2.0, 23-Jul-2018 ACT2861EVK1-201 Rev B User's Guide Description This document describes the characteristic and operation of the Active Semi ACT2861EVK1-201 evaluation kit (EVK). It provides setup and operation instructions, schematic, layout, BOM, and test data. This EVK demonstrates the ACT2861QI201 CMI version of the IC. Other ACT2861QIxxx options can be evaluated on this EVK by replacing the IC and any other necessary components. Features The EVK can be used as a standalone board if desired. However, to access the internal registers and to take full advantage of the IC's capability, the user must connect the EVK kit to a PC with Active Semi's USB-TO-I2C interface dongle and use the GUI software. The EVK provides full access to each converter's input and output voltage, as well as all the digital control signals. This gives the user the flexibility to configure the EVK to match their real world system. Figure 1 - EVK Picture Innovative PowerTM ActiveSwitcherTM is a trademark of Active-Semi. 1 UG110 Rev 2.0, 23-Jul-2018 EVK Contents The ACT2861EVK1-201 evaluation kit comes with the following items: 1. EVK assembly 2. USB-TO-I2C dongle a. Dongle b. Custom 4-pin connector that connects the USB-TO-I2C dongle to the EVK assembly Required Equipment ACT2861EVK1-201 USB-TO-I2C Dongle Power supply 4~30V @ 6A for full power operation Oscilloscope 100MHz, 4 channels 2-Serial Li-battery (or power supply capable of acting like a battery) Digital Multi-meters (DMM) Windows compatible PC with spare USB port. Hardware Setup Figure 2 - EVK Setup Innovative PowerTM ActiveSwitcherTM is a trademark of Active-Semi. 2 UG110 Rev 2.0, 23-Jul-2018 Quick Start Hardware Connections for Charge Mode Refer to Figure 2 for hardware connections to quickly configure the EVK for Charging Mode. 1. Connect a DC power supply to J1. Please ensure the correct power supply polarity. 2. Connect a 2S Li-Battery to J8. Please make sure the correct battery polarity. 3. Connect Digital Multi-Meters to VIN and VBAT to monitor the input voltage and battery voltages. 4. Add a digital Multi-Meter in series with VIN and VBAT if want to observe input and output current. 5. Be careful to keep the input voltage and battery voltage within the specifications. 6. Optional - Connect the EVK to the PC with the USB dongle. 7. Add a jumper to J2 to connect EN_CHG to V_IO. 8. Add a jumper to J7 to connect INTBP to V_IO. 9. Apply 12V input power. GUI Setup (optional) 1. Refer to the end of this document for detailed instructions to install the ACT2861 GUI. 2. Connect the USB-TO-I2C dongle to the computer. 3. Connect the USB-TO-I2C dongle to the EVK J5 connector. Refer to Figure 3 to ensure the correct cable connector polarity. As a guide, use the "Active-Semi" logo on the top of the dongle to ensure the black wire is connected to the Dongle GND pin. Figure 3 - USB-TO-I2C Dongle Connection Innovative PowerTM ActiveSwitcherTM is a trademark of Active-Semi. 3 UG110 Rev 2.0, 23-Jul-2018 Recommended Operating Conditions The ACT2861EVK1-201 is designed for a 4V-29V input voltage. The maximum operating voltage is determined by the IC's maximum input voltage rating. The minimum operating voltage is determined by the buck-boost converter's minimum input voltage. Maximum input and charging currents are determined by resistors and IC's CMI settings, which can be changed via I2C after startup. Table 1. Recommended Operating Conditions Parameter Description Min Typ Max Unit VIN Charger input voltage 4 - 29 V VBAT Charger output voltage 0 - 8.4 V IVIN_max Maximum input current 3 A IVBAT_max Maximum charge current 3 A IVREG_max Maximum LDO VREG load current 0.1 A EVK Operation The ACT2861EVK1-201 operates in two different modes: Charger Mode and OTG Mode. The EVK hardware setup is different for each of these two modes. Charger Mode Configuration: 1. Connect INTBP and V_IO together with a jumper on J7. 2. Connect EN_CHG and V_IO together with a jumper on J2. 3. Leave the nOTG pin on J3 open. 4. In Charge mode, both an input supply and a battery are required. The EVK can be operated in Charge mode without a battery, but needs the battery to perform actual charging. Figure 4 - Jumper Settings for Charge Mode OTG Mode Configuration: 1. Connect INTBP and V_IO together with a jumper on J7. 2. Connect nOTG to GND with a jumper on J3. 3. Connect EN_CHG to GND with a jumper on J2. 4. Connect a load to VIN (J1). This is the OTG output. 5. In OTG mode, either a battery or a power supply must be connected to VBAT (J8). Do not connect a power supply to VIN (J1). Innovative PowerTM ActiveSwitcherTM is a trademark of Active-Semi. 4 UG110 Rev 2.0, 23-Jul-2018 Figure 5 - Jumper Settings for OTG Mode Turn On the Evaluation Board Before applying the input voltage, please make sure the jumper (J7) is installed. Connect V_IO to INTBP or VREG. INTBP is the typical connection. After power source and battery are connected to the evaluation board per the required connections for either Charge mode or OTG mode, the EVK can be powered for operation. Perform the following steps to turn on the board. 1. In Charge mode, ensure that the power supply connected to VIN (J1) is >4V and <29V. 2. In OTG mode, ensure that the power supply or battery connected to VBAT is >5V and <22.5V. 3. Turn on power supply. 4. Apply the load. 5. If the EVK is configured for OTG mode, the IC automatically goes into SHIP mode when power is applied to VBAT. Push the SW1 button to exit SHIP MODE. When the IC exits SHIP MODE, it goes to HIZ MODE and then OTG mode. Note that I2C communication will not work when the IC is in SHIP MODE. Charge Current and Current Limit Configuration The ACT2861 features configurable input current limit, charge current, OTG input current, and OTG output current. These four features are programmed with a combination of an external resistor and an internal I2C register. Refer to the ACT2861 datasheet for programming details. Input Current Limit - The ACT2861EVK1-201 EVK input current limit is set to 3.03A. This is a function of the 10m current sense resister, R6, the 20k RILIM resistor, R15, and the I2C Input Current Limit bits, INLIMIT, which are set to 67% by default. The input current limit is easily changed by modifying any of these three parameters. The easiest way to change the input current limit is with the Input Current Limit field in the GUI. Charge Current Configuration- The ACT2861EVK1-201 EVK charge current is set to 1.505A. This is a function of the 10m current sense resister, R21, the 20k ROLIM resistor, R14, and the I2C Fast Charge bits, IFCHG, which are set to 50% by default. The charge current is easily changed by modifying any of these three parameters. The easiest way to change the charge current limit is with the Fast Charge field in the GUI. Innovative PowerTM ActiveSwitcherTM is a trademark of Active-Semi. 5 UG110 Rev 2.0, 23-Jul-2018 In addition, short current, pre-charge current, termination detection current can also be modified by the ACT2816 GUI. OTG Input Current Limit Configuration - The ACT2861EVK1-201 EVK OTG current limit is set to 6.06A. This is a function of the 10m current sense resister, R21, the 20k ROLIM resistor, R14, and the I2C OTG Battery Ilim bits, OTG_BAT_ILIM, which are set to 200% by default. The OTG input current limit is easily changed by modifying any of these three parameters. The easiest way to change the input current limit is with the OTG Battery Ilim field in the GUI. OTG Output Current Limit Configuration - The ACT2861EVK1-201 EVK OTG output current limit is set to 3.03A. This is a function of the 10m current sense resister, R6, the 20k RILIM resistor, R15, and the I2C OTG Current Limit bits, OTC_CC, which are set to 100% by default. The OTG output current limit is easily changed by modifying any of these three parameters. The easiest way to change the input current limit is with the OTG Current Limit field in the GUI. Innovative PowerTM ActiveSwitcherTM is a trademark of Active-Semi. 6 UG110 Rev 2.0, 23-Jul-2018 Additional Programmable Functionality The ACT2861 contains many additional programmable parameters. Refer to the ACT2861 datasheet for additional functionality and default I2C register values. Test Results Innovative PowerTM ActiveSwitcherTM is a trademark of Active-Semi. 7 UG110 Rev 2.0, 23-Jul-2018 Innovative PowerTM ActiveSwitcherTM is a trademark of Active-Semi. 8 UG110 Rev 2.0, 23-Jul-2018 Innovative PowerTM ActiveSwitcherTM is a trademark of Active-Semi. 9 Innovative PowerTM ActiveSwitcherTM is a trademark of Active-Semi. 10 R4 NP GND NP R2 GND J2 VIN 3 2 1 TP2 TP1 V_IO NP EN_CHG R1 VIN 2 1 R3 NP A2D/IFB AGND VIN 3.5mm J1 J3 1 2 J6 C1 35V 10u J5 J4 GND R5 10k nOTG V_IO GND 1 SCL 2 SDA 3 nIRQ 10k R7 C3 2.2n AGND R8 NP V_IO C2 470u R6 20k R14 GND DNI R9 DNI R12 V_IO AGND C5 22n R13 20k 10m 20k R15 J7 R16 1 2 3 GND INTBP V_IO VREG AGND C21 DNI 10k R24 DNI SHIPM OLIM ILIM TH A2D/IFB GPIO/ICOMP C8 35V 10u nOTG EN_CHG SCL GND SDA 1 5 20 9 11 29 2 30 31 8 32 7 6 23 24 27 C7 470n 10V ISRN INPUT 26 ISRP C6 35V 10u AGND C20 DNI R23 DNI C4 0.1u R11 30R R10 30R ACT2861 HP21 SW1 GND R17 0R SHIPM AGND PGND PGND SHIPM OILIM ILIM TH A2D/IFB GPIO/ICOMP nOTG EN-CHG SCL SDA VIN VIN ISRN ISRP U1 VREG INTBP nIRQ nCHG VBATS VBAT VBAT OSRP OSRN HSB2 SW2 SW2 SW1 SW1 HSB1 AGND TP3 BLK 4 VREG 3 INTBP 10 nIRQ 28 nCHG 12 VBAT TP6 BLK TP14 AGND GND C12 0.1u 10V R19 R18 C13 0.1u GND C11 470n 35V C10 47n 35V C9 47n 35V 16 VBAT_OUT 17 14 OSRP 13 OSRN 15 HSB2 19 SW2 18 22 SW1 21 25 HSB1 GND TP7 BLK GND Active-Semi GND TP8 BLK VREG D1 BLUE 10k GND GND TP12 BLK C17 470u GND C18 22u GND GND 0R AGND GND R22 C19 22u ACT2861 EVK Schematic (PCB-0301-01-00) GND TP11 BLK VBAT R21 10m R20 C16 25V 22u GND L1 10u C14 1u 10V TP13 GND C15 25V 22u 30R 30R TP5 TP4 1 2 TP10 3.5mm J8 TP9 Rev 2.0, 23-Jul-2018 UG110 Schematic UG110 Rev 2.0, 23-Jul-2018 Layout Figure 5 - Layout Top Layer Innovative PowerTM ActiveSwitcherTM is a trademark of Active-Semi. 11 UG110 Rev 2.0, 23-Jul-2018 Figure 6 - Layout Layer GND Innovative PowerTM ActiveSwitcherTM is a trademark of Active-Semi. 12 UG110 Rev 2.0, 23-Jul-2018 Figure 7 - Layout Layer VCC Innovative PowerTM ActiveSwitcherTM is a trademark of Active-Semi. 13 UG110 Rev 2.0, 23-Jul-2018 Figure 8 - Layout Bottom Layer Innovative PowerTM ActiveSwitcherTM is a trademark of Active-Semi. 14 UG110 Rev 2.0, 23-Jul-2018 Bill of Materials Table 2. ACT2861EVK1-201 BOM Item 1 Ref Des C1, C6, C8, C15, C16, C18, C19 QTY Package MFR Part Number 7 Cap, Ceramic, 22uF, 35V, 10%, X7R Description 1206 TDK C3216X5R1V226M160AC 8mmx11mm Wurth Elektronik 2 C2 2 ELCap, 470uF, 25V 3 C3 1 Cap, Ceramic, 2.2nF, 35V, 10%, X7R 0603 std 4 C4, C13, C12 3 Cap, Ceramic, 0.1uF, 35V, 10%, X7R 0603 Wurth Elektronik 5 C5, 2 Cap, Ceramic, 22nF, 35V, 10%, X7R 0603 std 6 C7, C11 2 Cap, Ceramic, 470nF, 10V, 10%, X7R 0603 Wurth Elektronik 885012206014 7 C9, C10 2 Cap, Ceramic, 47nF, 35V, 10%, X7R 0603 Wurth Elektronik 885012206093 8 C14 1 Cap, Ceramic, 1uF, 10V, 10%, X7R 0603 Wurth Elektronik 885012206026 9 C17 1 ELCap, 470uF, 16V 8mmx11mm Wurth Elektronik 860020374012 10 C20, C21 2 DNI 0603 11 D1 1 LED, Blue 0603 12 J1, J8 2 Connector, 2 pin 13 J2 1 Header, 2 pin, 100mil 14 J4, J6 2 Header, 1pin, 100mil 15 J3, J5, J7 3 Header, 3 pin, 100mil 16 L1 1 Wurth inductor 10uH 17 R1, R2 ,R3, R4, R8, R23, R24, 7 18 R5, R7, R9, R12, R16, R20 19 20 21 860010675020 std 885012206020 std std 6mmx6mmx6 mm std Wurth Elektronik Wurth Elektronik Wurth Elektronik Wurth Elektronik Wurth Elektronik Wurth Elektronik DNI 0603 std std 6 Res, 10k, 1% 0603 std std R6, R21 R10, R11, R18, R19 2 Res, 10m, 1% 1206 SART std 4 Res, 30, 1% 0603 std std 150060VS75000 691214110002S 61300211121 61300111121 61300311121 74439346100 R13 1 Res,20k, 1% 0603 std std 22 R14, R15 2 Res, 33k, 1% 0603 std std 23 R17, R22 2 Res, 0, 1% std 24 SW1 1 SMT Tact switch 4mmx4mmx1.5mm 25 TP1, TP4, TP5, TP9, TP13, TP14 4 Test Point, Red, Through Hole, 1mm Innovative PowerTM ActiveSwitcherTM is a trademark of Active-Semi. 15 0603 std 4mmx4mmx1. 5mm Wurth Elektronik 430481035816 0.040" Keystone 5000 UG110 Rev 2.0, 23-Jul-2018 26 TP2, TP3, TP6, TP7, TP8, TP10, TP11, TP12 6 Test Point, Black, Through Hole, 1mm 27 U1 1 ACT2861QI201 28 -- 1 29 -- 3 0.040" Keystone 4mmx4mm QFN Active Semi PCB, ACT2861EVK1 REVB n/a n/a PCB-0309-02 Shunt, 100mil, Black n/a n/a 60900213421 Innovative PowerTM ActiveSwitcherTM is a trademark of Active-Semi. 16 5000 ACT2861QI201 UG110 Rev 2.0, 23-Jul-2018 GUI Installation 1. 2. 3. 4. Get GUI files from the Active Semi website Plug the USB-TO-I2C dongle into a free USB port. Follow the instructions in the "How to install driver for dongle" folder. Double click on the ACT2861 GUI.exe to start the ACT2861 GUI. GUI Overview The GUI has 2 basic function buttons allocated in top-left of the Tool Bar which are Read and Write I2C. The GUI contains 2 setting modes: Basic Mode and Advanced Mode. In Basic Mode screen it displays basic user programmable configuration options are programmed using the drop-down boxes or check boxes. Advanced Mode contain the button text for changing setting for every single bit. Basic Mode The following figure show the GUI in basic mode. This mode allows the user to easily change one or more IC settings. Innovative PowerTM ActiveSwitcherTM is a trademark of Active-Semi. 17 UG110 Rev 2.0, 23-Jul-2018 Advanced Mode Click the "Advanced Mode" button in the left of the GUI screen to see all available user programmable options. With Advanced Mode, additional user programmable features can be selected using the button text. In the left side of the Advanced Mode Screen, click on the Tiles Selector to display the register to view or change. Then change a register one bit at a time by clicking on the desired bit. The value of the bit is display right next to the bit-name button. Note that the far right side of the screen contains a scroll down button to scroll down to additional registers since the Tile Screen can only display up to 8 bytes at once. Innovative PowerTM ActiveSwitcherTM is a trademark of Active-Semi. 18 UG110 Rev 2.0, 23-Jul-2018 Button Descriptions Read: Clicking on this button reads the ACT2861 registers and displays them in the GUI. Note that this reads all registers. Active-Semi recommends reading registers each time the ACT2861 powers-up to acquire the initial register settings. Active-semi also recommends reading registers after making changes to them. Immediately reading the registers after a write confirms the changes were properly stored. Read Button Write: Clicking on this button writes the GUI settings to the ACT2861's registers. All registers are written, regardless of whether or not they were changed. Write Button Dongle Connection Status: The GUI also contains a dongle connection status that indicates Active-Semi's USB-TO-I2C dongle is connected to the USB port. The figure below shows the two possible indication status graphics. Dongle connected Dongle Disconnected Innovative PowerTM ActiveSwitcherTM is a trademark of Active-Semi. 19