XRP7714EVB-DEMO-X Four Channel Digital PWM Demo Boards s April 2011 Rev. 1.0.0 GENERAL DESCRIPTION EVALUATION BOARD MANUAL The XRP7714EVB-DEMO-1, XRP7714EVBDEMO-2, and the XRP7714-DEMO-2P Demo boards are complete, working, four channel, power systems measuring either 2" x 2", or 2" by 2.5" capable of producing over 35 watts. They provide 3.3V, 2.5V 1.8V and 1V at a maximum of 4 amps per channel. The 2.5V, 1.8V and 1V supplies can be adjusted in 50mV increments, and the 3.3V supply is adjustable in 100mV increments. The order and ramp rates for each supply can be programmed to accommodate any sequencing requirement. All power supply operations can be controlled over an I2C interface. Faults, output voltages and currents can also be monitored. Four GPIO signals are available and can be programmed to provide status of power good signals enables and faults. Unused GPIO pins can be programmed as I/O expansion for a microcontroller. The board is supported by PowerArchitectTM and plugs directly onto the Exar Communications Module (XRP77xxEVBXCM). XRP7714EVB-DEMO-1 XRP7714EVB-DEMO-2/2P FEATURES XRP7714 Programmable Controller 4 Channel Power System Wide Input Voltage Range: 4.5V-25V Over 35W Capable Small Form Factor: 2.0" x 2.0" I2C Interface Programming Monitoring Control EVALUATION BOARD CON3 1 3 2 VIN CSD1 R28 VIN GND CSD1 R1 VCCA 0.00 C1 10uF 35V R2 0 SD101AWS VCCD 4.99 C17 2.2uF 10V VIN1 C18 2.2uF 10V GH1 CSD1 3 2 1 PGND2 BST1 GH1 LX1 GL1 PGND1 VCCA LDO C16 .1uF 50V GPIO5_SCL GPIO4_SDA C13 CSD1 TIP5 BST2 VCCD Q2B C23 .01uF 50V L2 LX2 31 34 32 33 PGND2 BST1 GH1 LX1 VCCD GPIO3 BST4 GPIO4 GH4 GPIO5 LX4 ENABLE GL4 DGND PGND4 BST3 GH3 LX3 GL3 GL2 29 LX2 VOUT2_1.8V TIP6 28 GH2 27 BST2 26 VCCD 25 BST4 24 GH4 23 LX4 22 GL4 21 PGND4 GH2 PGND2 BST3 GH3 LX3 GL3 VOUT3_2.5V PGND3 VOUT2_1.8V VOUT4_1V FB_VOUT1 1000pF 50V 1000pF 50V C29 C39 C40 C41 1000pF 50V 1000pF 50V C26 C25 150uF 10V47uF 16V C27 .1uF 50V C24 1000pF 50V VOUT2 CSD1 TIP10 CSD1 D3 GL2 BST3 VCCD SD101AWS VIN1 Q3B C33 .01uF 50V L3 LX3 VOUT3_2.5V 4.9uH FDS8984 PGND3 VOUT3_2.5V R20 4.99 R18 FDS8984 4.99 C31 10uF 35V XRP7714 GH3 GPIO0 GPIO1 GPIO2 GPIO3 CSD1 CSD1 CSD1 CSD1 VOUT2_1.8V Q2A R11 4.99 C3 2.2uF 10V CSD1 R12 4.99 R10 FDS8984 4.99 C20 10uF 35V 20 19 18 17 PGND3 16 VOUT4 15 VOUT3 14 CON5 GH2 GPIO2 VOUT2 13 .01uF 50V LX2 BST2 VOUT1 12 GPIO5_SCL 9 10 FDS8984 30 LDO CSD1 SD101AWS U1 GL2 GPIO1 AGND 11 C28 GL1 ENABLE GPIO4_SDA 35 GPIO5_SCL 8 GPIO0 PGND1 6 GPIO4_SDA7 36 5 GPIO3 DVDD VCCA GPIO2 VIN2 4 VIN1 GPIO1 AVDD LDO R15 100K 3 37 40 VCCA VIN1 ENABLE GPIO0 38 1 39 .1uF 50V 2 10 9 8 7 6 5 4 3 2 1 TIP8 R7 DNP C9 1000pF 50V VIN1 VOUT1 FB_VOUT1 3.3uH CON4 CON5 C12 .1uF 50V D2 GL1 CON4 C11 C10 47uF 10V 47uF 16V R4 4.99 VOUT1_3.3V CSD1 Q1B PGND1 VIN R6 0.00 R5 4.99 R3 FDS8984 4.99 C2 470uF 35V TIP4 VOUT1_3.3V 4.9uH C6 10uF 35V CSD1 C8 .01uF 50V L1 LX1 FDS8984 VIN1 VIN1 Q1A R13 0 Q3A C37 C36 47uF 10V 47uF 16V C38 .1uF 50V C35 1000pF 50V R19 4.99 TIP11 CSD1 TIP14 CSD1 D4 GL3 BST4 VCCD SD101AWS VIN1 Q4B C34 .01uF 50V L4 LX4 VOUT4_1V 2.0uH GPIO0 GPIO1 GPIO2 FDS8984 CON9 CON10 CON11 CON12 MTG HOLE MTG HOLE MTG HOLE MTG HOLE C43 10uF 35V R23 FDS8984 4.99 GPIO3 GH4 PGND4 R24 4.99 VOUT4_1V R25 4.99 Q4A C45 C46 330uF 4V 47uF 16V C44 1000pF 50V C47 .1uF 50V VOUT4 CSD1 TIP13 CSD1 GL4 Fig. 1: XRP7713EVB-DEMO-1 Schematic Exar Corporation 48720 Kato Road, Fremont CA 94538, USA www.exar.com Tel. +1 510 668-7000 - Fax. +1 510 668-7001 XRP7714EVB-DEMO-X Four Channel Digital PWM Demo Boards PIN ASSIGNMENT Fig. 2: XRP7714 Pin Assignment Pin Description Name Pin Number VIN1 39 Power source for the internal linear regulators to generate VCCA, VDD and the Standby LDO (LDOOUT). Place a decoupling capacitor close to the controller IC. Also used in UVLO1 fault generation - if VIN1 falls below the user programmed limit, all channels are shut down. The VIN1 pin needs to be tied to VIN2 on the board with a short trace. VIN2 38 If the Vin2 pin voltage falls below the user programmed UVLO VIN2 level all channels are shut down. The VIN2 pin needs to be tied to VIN1 on the board with a short trace. VCCA 37 Output of the internal 5V LDO. This voltage is internally used to power analog blocks. Note that a compensation capacitor should be used on this pin (see application note). VCCD 26 Gate Drive input voltage. This is not an output voltage. This pin can be connected to VCCA to provide power for the Gate Drive. VCCD should be connected to VCCA with the shortest possible trace and decouple with a minimum 1F capacitor. Alternatively, VCCD could be connected to an external supply (not greater than 5V). PGND14 36,31,16,21 AVDD 1 Output of the internal 1.8V LDO. A decoupling capacitor should be placed between AVDD and AGND close to the chip (with short traces). DVDD 2 Input for powering the internal digital logic. This pin should be connected to AVDD. DGND 10 Digital Ground. Connect this pin to the ground plane at the exposed pad with a separate trace. AGND 11 Analog Ground. Connect this pin to the ground plane at the exposed pad with a separate trace GL1-GL4 35,30,17,22 (c) 2011 Exar Corporation Description Power Ground. Ground connection for the low side gate driver. Connect at low side FET source. Output pin of the low side gate driver. Connect directly to the respective gate of an external N-channel MOSFET. 2/16 Rev. 1.0.0 XRP7714EVB-DEMO-X Four Channel Digital PWM Demo Boards Name Pin Number Description GH1-GH4 33,28,19,24 Output pin of the high side gate driver. Connect directly to the respective gate of an external N-channel MOSFET. LX1-LX4 34,29,18,23 Lower supply rail for the high-side gate driver (GHx). Connect this pin to the switching node at the junction between the two external power MOSFETs and the inductor. These pins are also used to measure voltage drop across bottom MOSFETs in order to provide output current information to the control engine. BST1-BST4 32,27,20,25 High side driver supply pin(s). Connect BST to an external boost diode and a capacitor as shown in the front page diagram. The high side driver is connected between the BST pin and LX pin. GPIO0-GPIO3 3,4,5,6 These pins can be configured as inputs or outputs to implement custom flags, power good signals and enable/disable controls. A GPIO pin can also be programmed as an input clock synchronizing IC to external clock. Refer to the "GPIO Pins" Section and the "External Clock Synchronization" Section for more information. GPIO4_SDA, GPIO5_SCL 7,8 VOUT14 12,13,14,15 LDOOUT 40 ENABLE 9 AGND Exposed Pad I2C serial interface communication pins. These pins can be re-programmed to perform GPIO functions in applications when I2C bus is not used. Voltage sense. Connect to the output of the corresponding power stage. Output of the Standby LDO. It can be configured as a 5V or 3.3V output. A compensation capacitor should be used on this pin [see Application Note]. If ENABLE is pulled high, the chip powers up (logic reset, registers configuration loaded, etc.). If pulled low for longer than 100us, the XRP7714 is placed into shutdown. Analog Ground. Connect to analog ground (as noted above for pin 11). ORDERING INFORMATION Refer to XRP7714's datasheet and/or www.exar.com for exact and up to date ordering information. (c) 2011 Exar Corporation 3/16 Rev. 1.0.0 XRP7714EVB-DEMO-X Four Channel Digital PWM Demo Boards Channel 2 is designed to provide an output voltage from 1.8V to 2.5V. The default voltage is 2.5V. USING THE EVALUATION BOARD INPUT VOLTAGE CONFIGURATION Channel 3 is designed to provide an output voltage from 1.5V to 1.8V. The default voltage is 1.8V. The XRP7714EVB-DEMO-1 Board has several different input voltage options. The Input voltage components are rated at 35V. The power components have been optimized for a 12V input rail. When running the board at an input voltage other than 12V, use PowerArchitectTM to evaluate the system performance. Channel 4 is designed to provide an output voltage from .9 to 1.2V. The default voltage is 1.0V. The Tantalum output capacitor is has a 4V rating. If modifying the channel 3 design, do not exceed four volts unless the C45 is replaced. Single Wide Range, Input Voltage Rail ENABLE PIN Both the XRP7714EVB-DEMO-1 and the XRP7714EVB-DEMO-2P ship from the factory configured for a single wide range input. The Input voltage range is from 5.5V to 25V. The ENABLE pin connects to an RC network This delays turn on of the device. It is pulled up to AVDD with a 100K resistor and to ground through a .01uFd capacitor. It appears on pin 9 of connector CON5. This pin can be used to turn on or turn off the device. Single 5V Voltage Rail Installing a zero ohm resistor into position R28 connects VIN to VCCA. This allows operation down to 4.5V, but restricts the maximum input voltage to 5.5V. BOARD DIFFERENCES The XRP7714EVB-DEMO-1 board is 2" x 2" and does not have the facility for a power connector. Dual Voltage Rail Operation The XRP7714EVB-DEMO-x boards can be configured to operate from two separate rails. The XRP7714EVB-DEMO-2 board is 2" x 2.5" and comes from the factory with wired for Single 5V operation. The Power Jack has been removed from the board. Supplying more than 5V to the board will damage the XRP7714. The following modifications must be made: Remove 0 ohm resistors R2 and R13 Connect power for the XRP7714 between pins VIN and GND Connect channel power between pins VIN1 and GND The XRP7714EVB-DEMO-2P board is 2" x 2.5" and comes from the factory wired for a single wide range input. The P denotes that a power connector is installed for connection to a power supply of the customers choosing. The Center lead of the input connector is positive. I2C INTERFACE The XRP77XX family of controllers employs a standard I2C interface. Pull-ups for the I2C signals are not included on the demo board. If using the demo board with something other than the XRP77xxEVB-XCM, verify that the SDA and SCL lines are pulled up. Operating the Evaluation Board Note: The XRP7714EVB-DEMO-2, is designed to be powered from the USB voltage that is supplied to from the host PC. No additional power connections are required to demonstrate basic board functionality. If connecting the board to an external power source, Caution, Do not exceed 5.5V on the chip, or it will be damaged. Channel Design and Limitations Channel 1 is designed to provide an output voltage from 3.3V to 5.0V. The default voltage is 3.3V. (c) 2011 Exar Corporation Make sure that the board is configured for the power supply(s) that you are using. Refer to the Input Voltage Configuration section if you 4/16 Rev. 1.0.0 XRP7714EVB-DEMO-X Four Channel Digital PWM Demo Boards require specific board modifications for your application. You will be prompted for a filename by a Create New File Dialog box. Navigate to a location to save the configuration, enter a filename and select Save. Apply Power to the board: Please refer to the appropriate board connection diagram for your specific evaluation board. If using a single supply, Connect the input supply between the VIN pin and the GND pin. If using a dual supply, Connect the chip power between VIN/VINP pin and GND, and connect Power Vin between the VIN1 pin and GND. Plug the PowerXR evaluation board on to the XCM as shown below. Insert the USB cable into the computer and the XCM board. Turn on the Power supply Load the PowerArchitectTM software. Select the XRP7714EVB configuration select create configuration.. (c) 2011 Exar Corporation and Refer to the Exar PowerArchitectTM Quick Start Guide for information on how to run the software. 5/16 Rev. 1.0.0 XRP7714EVB-DEMO-X Four Channel Digital PWM Demo Boards EVALUATION BOARD CONNECTIONS: DEMO-2P Figure 3:XRP7714EVB-DEMO-2P Board Connections (c) 2011 Exar Corporation 6/16 Rev. 1.0.0 XRP7714EVB-DEMO-X Four Channel Digital PWM Demo Boards EVALUATION BOARD CONNECTIONS: DEMO-2 Figure 4:XRP7714EVB-DEMO-2 Board Connections (c) 2011 Exar Corporation 7/16 Rev. 1.0.0 XRP7714EVB-DEMO-X Four Channel Digital PWM Demo Boards EVALUATION BOARD CONNECTIONS: DEMO-1 GND GND Channel 4 Out Channel 2 Out GND Channel 3 Out LDO OUT GND GND Channel 1 Out PGND POWER VIN (VINP) CHIP VIN (VIN) GND Figure 5:XRP7714EVB-DEMO-1 Board Connections (c) 2011 Exar Corporation 8/16 Rev. 1.0.0 1 2 3 4 5 VIN CON3 1 3 2 D1 BST1 VIN CSD1 R28 VIN R2 0 GND CSD1 VIN1 R1 VCCA 0.00 C1 10uF 35V A VCCD 4.99 C17 2.2uF 10V VIN1 C18 2.2uF 10V Q1A R3 FDS8984 4.99 C6 10uF 35V C2 470uF 35V GH1 PGND1 GL1 GPIO0 GPIO1 GPIO2 GPIO3 CSD1 CSD1 CSD1 CSD1 PGND2 31 32 BST1 33 GH1 34 LX1 GL1 36 35 37 VCCA 38 VIN2 PGND1 BST3 20 LX2 30 GL2 29 LX2 28 GH2 27 BST2 26 VCCD 25 BST4 24 GH4 23 LX4 22 GL4 21 PGND4 C20 10uF 35V GH2 PGND2 GL2 C23 .01uF 50V L2 CSD1 TIP5 LDO CSD1 VOUT2_1.8V TIP6 C3 2.2uF 10V CSD1 VOUT2_1.8V R12 4.99 Q2A C26 C25 150uF 10V47uF 16V VOUT2 CSD1 C27 .1uF 50V TIP10 C24 1000pF 50V B CSD1 D3 BST3 VCCD SD101AWS VIN1 Q3B LX3 C33 .01uF 50V L3 VOUT3_2.5V 4.9uH FDS8984 R18 FDS8984 4.99 C31 10uF 35V XRP7714 GH3 PGND3 1000pF 50V 1000pF 50V C29 C39 C40 C41 1000pF 50V 1000pF 50V A TIP8 R7 DNP VCCD R11 4.99 VOUT1 FB_VOUT1 D2 R10 FDS8984 4.99 BST3 LX3 GH3 19 18 PGND4 GH3 LX3 PGND3 GL3 17 VOUT4 DGND GL3 C 39 GL4 16 CON5 VIN1 ENABLE PGND3 .01uF 50V LX4 VOUT4_1V 15 GPIO5_SCL 10 GPIO5 VOUT3 C28 GH4 11 GPIO4_SDA GPIO4 VOUT2 ENABLE 9 BST4 VOUT3_2.5V 14 GPIO5_SCL8 GPIO3 VOUT2_1.8V 13 GPIO4_SDA7 VCCD VOUT1 6 LDO 40 GPIO3 GPIO2 AGND 5 BST2 C9 1000pF 50V FDS8984 U1 GL2 GPIO1 C12 .1uF 50V 3.3uH GH2 FB_VOUT1 12 GPIO2 Q2B LX2 GPIO0 C11 C10 47uF 10V 47uF 16V SD101AWS PGND2 R15 100K ENABLE 4 BST1 10 9 8 7 6 5 4 3 2 1 VIN1 3 GPIO1 GH1 CON5 VCCA GPIO0 DVDD LX1 2 GL1 B AVDD PGND1 1 .1uF 50V VCCA CON4 LDO C13 VOUT1_3.3V CSD1 Q1B BST2 VIN1 GPIO5_SCL GPIO4_SDA R6 0.00 R5 4.99 R4 4.99 VIN C16 .1uF 50V VOUT1_3.3V 4.9uH CSD1 3 2 1 C8 .01uF 50V L1 LX1 FDS8984 VIN1 TIP4 VCCD SD101AWS R13 0 CSD1 CON4 6 Q3A C37 C36 47uF 10V 47uF 16V TIP11 CSD1 C38 .1uF 50V TIP14 C35 1000pF 50V R19 4.99 GL3 VOUT3_2.5V R20 4.99 CSD1 C D4 BST4 VCCD SD101AWS VIN1 Q4B LX4 C34 .01uF 50V L4 VOUT4_1V 2.0uH GPIO0 FDS8984 GPIO1 CON9 CON10 CON11 CON12 MTG HOLE MTG HOLE MTG HOLE MTG HOLE GPIO2 C43 10uF 35V R23 FDS8984 4.99 GPIO3 GH4 PGND4 D R24 4.99 VOUT4_1V R25 4.99 Q4A C45 C46 330uF 4V 47uF 16V C47 .1uF 50V C44 1000pF 50V VOUT4 CSD1 TIP13 CSD1 GL4 D Title Size XRP7714EVB-DEMO-XX Number Revision 1.0 B Date: File: 1 2 3 4 5 4/20/2011 C:\Users\..\XRP7714..Sch Sheet 1 of 1 Drawn By: 6 XRP7714EVB-DEMO-X Four Channel Digital PWM Demo Boards BILL OF MATERIAL Ref. Qty Manufacturer Part Number Size Description C1, C6, C20, C31, C43 5 Murata GRM32ER6YA106KA12L C1210 Cap, Ceramic 10uF 35V X7R 1210 C2 1 United ChemiCon EKZE350ELL471MJ20S RB2/4 Cap, Aluminum, 470uF 35V LOW ESR C3, C17, C18 3 Murata GRM21BR71A225KA01L C0805 Cap, Ceramic 2.2uF 10V X7R 0805 C8, C23, C28, C33, C34 5 Murata GRM188R71H103KA01D C0603 Cap, Ceramic .01uF 50V X7R 0603 C9, C24, C29, C35, C39, C40, C41, C44 8 Murata GRM188R71H102KA01D C0603 Cap, Ceramic 1000pF 50V X7R 0603 C10, C25, C36, C46 4 Murata GRM32ER71A476KE15L C1210 Cap, Ceramic 47uF 16V X7R 1210 C11, C37 2 AVX TCJB476M010R0070 C1210 Cap, Tantalum 47uF 10V LOW_ESR, CASE A C12, C13, C16, C27, C38, C47 6 Murata GRM21BR71H104KA01L C0603 Cap, Ceramic .1uF 50V X7R 0603 C26 1 AVX T520B157M006ATE070 C1210 Cap, Tantalum 150uF 10V LOW_ESR, CASE A C45 1 AVX T520B337M2R5ATE045 C1210 Cap, Tantalum 330uF 4V LOW_ESR, CASE A CON3 1 Switchcraft JACKRAPC722X CONN POWERJACK MINI .08" R/A T/H CON4 1 CON5 1 Wurth Electronik Wurth Electronik D1, D2, D3, D4 4 Diodes Inc GND, TIP4, TIP5, TIP6, TIP8, TIP10, TIP11, TIP13, TIP14, VIN, VIN1, VOUT1, VOUT2, VOUT4 14 Keystone 1562-2 PAD-HOLE GPIO0, GPIO1, GPIO2, GPIO3 4 Keystone 1528-2 SIP1 L1, L3 2 Wurth 744314490 744310X Inductor, Shielded 4.9uH 6.5A 17mOhm L2 1 Wurth 744311330 744310X Inductor, Shielded 3.3uH 6.5A 17.2mOhm L4 1 Wurth 744310200 744310X Inductor, Shielded, 2.0uH 6.5A 14.2mOhm Q1, Q2, Q3, Q4 4 Fairchild R1, R3, R4, R10, R11, R18, R19, R23, R24 9 Vishay/Dale CRCW06034R99FKEA 0603 Resistor, 4.99 .1W 0603 R2, R13 2 Vishay/Dale CRCW12060000Z0EA 1206 Resistor 0.00 .25W 1206 R5, R12, R20, R25 4 Vishay/Dale CRCW08054R99FKEA 0805 Resistor, 4.99 .1W 0805 1 Vishay/Dale CRCW02010000Z0ED 0603 Resistor, 0.00 .1W 0603 R15 1 Vishay/Dale CRCW0603100KFKEA 0603 Resistor, .100K 1W 0603 U1 1 Exar Corporation QFN40 4 Channel 25 V PWM Step Down DC-DC Controller QFN-40 R6 (c) 2011 Exar Corporation RAPC722X 61304011121 SIP3 613 010 218 21 HDR2X5FTOP SD101CWS-7-F SOD-323 FDS8984 XRP7714ILB-F 10/16 SO-MOS-8B CONNECTOR .1 CTR 3 pin CONN Header 5x2, 0.1 inch Diode, Schottky, 40V 400mW SOD-323 Test Points FDS8984 Rev. 1.0.0 XRP7714EVB-DEMO-X Four Channel Digital PWM Demo Boards EVALUATION BOARD LAYOUT Fig. 3: Component Placement - Top Side Fig. 4: Component Placement - Bottom Side (c) 2011 Exar Corporation 11/16 Rev. 1.0.0 XRP7714EVB-DEMO-X Four Channel Digital PWM Demo Boards Fig. 5: Layout - Top Side Fig. 6: Layout - Bottom (c) 2011 Exar Corporation 12/16 Rev. 1.0.0 XRP7714EVB-DEMO-X Four Channel Digital PWM Demo Boards Fig. 7: Layout - Internal Plane Fig. 8: Layout - Internal Plane (c) 2011 Exar Corporation 13/16 Rev. 1.0.0 XRP7714EVB-DEMO-X Four Channel Digital PWM Demo Boards EVALUATION BOARD EFFICIENCY PERFORMANCE Fig. 9: All Channels Efficiency Fig. 10: 3.3V Efficiency Fig. 11: 2.5V Efficiency Fig. 12: 1.8V Efficiency Fig. 14: Layout - Internal Plane Fig.13: 1V Efficiency (c) 2011 Exar Corporation 14/16 Rev. 1.0.0 XRP7714EVB-DEMO-X Four Channel Digital PWM Demo Boards EVALUATION BOARD LINE LOAD REGULATION PERFORMANCE Fig. 14: Line Load Regulation 3.3V Fig. 15: Line Load Regulation 2.5V Fig. 16: Line Load Regulation 1.8V Fig. 17: Line Load Regulation 1.0V Fig.18: 1V Efficiency Fig. 14: Layout - Internal Plane (c) 2011 Exar Corporation 15/16 Rev. 1.0.0 XRP7714EVB-DEMO-X Four Channel Digital PWM Demo Boards Document Revision History Revision Date 1.0.0 04/15/2011 Description Initial release of document BOARD REVISION HISTORY Board Revision Date REV2.0 01/03/2011 Initial release of evaluation boards 2 and 2P. Description REV2.0 12/23/2010 Initial release of evaluation board 1. Note: Limited to a production of 150 units. FOR FURTHER ASSISTANCE Email: customersupport@exar.com Exar Technical Documentation: http://www.exar.com/TechDoc/default.aspx? EXAR CORPORATION HEADQUARTERS AND SALES OFFICES 48720 Kato Road Fremont, CA 94538 - USA Tel.: +1 (510) 668-7000 Fax: +1 (510) 668-7030 www.exar.com NOTICE EXAR Corporation reserves the right to make changes to the products contained in this publication in order to improve design, performance or reliability. EXAR Corporation assumes no responsibility for the use of any circuits described herein, conveys no license under any patent or other right, and makes no representation that the circuits are free of patent infringement. Charts and schedules contained here in are only for illustration purposes and may vary depending upon a user's specific application. While the information in this publication has been carefully checked; no responsibility, however, is assumed for inaccuracies. EXAR Corporation does not recommend the use of any of its products in life support applications where the failure malfunction of the product can reasonably be expected to cause failure of the life support system or to significantly affect safety or effectiveness. Products are not authorized for use in such applications unless EXAR Corporation receives, writing, assurances to its satisfaction that: (a) the risk of injury or damage has been minimized; (b) the user assumes such risks; (c) potential liability of EXAR Corporation is adequately protected under the circumstances. or its in all Reproduction, in part or whole, without the prior written consent of EXAR Corporation is prohibited. (c) 2011 Exar Corporation 16/16 Rev. 1.0.0 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Exar: XRP7714EVB-DEMO-2P-KIT XRP7714EVB-DEMO-2P XRP7714EVB-DEMO-2-KIT XRP7714EVB-DEMO-2