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© 2022 ROHM Co., Ltd.

65UG018E Rev.001

July 2022

User’s Guide

PMIC BD96801 powering Xilinx Spartan-7

FPGA

User’s Guide

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Summary of Contents for PMIC BD96801

Page 1: ...1 36 2022 ROHM Co Ltd 65UG018E Rev 001 July 2022 User s Guide PMIC BD96801 powering Xilinx Spartan 7 FPGA User s Guide ...

Page 2: ...ng your hand close to the board may result in discharge and lead to severe injury or death Therefore DO NOT touch the board with your bare hands or bring them too close to the board In addition as mentioned above please exercise extreme caution when using conductive tools such as tweezers and screwdrivers 7 If used under conditions beyond its rated voltage it may cause defects such as short cir cu...

Page 3: ...standards and regulations in the country it will be operated in The evaluation board provided here has only been subjected to functional testing under typical load conditions The design of this evaluation board is tested by ROHM only as described in the user guide for this board The design is not qualified in terms of safety requirements manufacturing and operation over the entire operating temper...

Page 4: ...an 7 EVK description 6 3 2 Board details 7 3 3 Power tree 8 3 4 LED Indications 9 3 5 Power up 9 3 6 Onboard switches 10 3 7 PMIC status pins 11 3 8 General purpose FPGA I Os 12 3 9 JTAG interface 13 3 10 I2C interface 14 4 Testing default FPGA software 14 5 Power sequencing 16 6 Troubleshooting 16 7 Schematic and BOM 18 8 PCB layout 27 ...

Page 5: ...rged to a safe level Warning Ensure that you use only appropriate measurement equipment for the voltage levels pre sent on the board Ensure not to ground live parts through unsuitable measurement probes or tie different grounds together using passive probes Suitable high voltage differential probes should be used Failure to do so may result in damage to equipment personal injury or death Warning B...

Page 6: ...e individually defined as well This manual explains how to use the BD96801 SPA7 EVK 301 with ROHM s PMIC BD96801 in UQFN48FV6060 package 3 Key features The evaluation board is an eight layered PCB with dimensions of approximately 120 mm by 100 mm Figure 1 shows the picture of the EVK indicating key components onboard To operate the EVK you need a DC DC power supply 10V to 24V 300mA 3 1 Spartan 7 E...

Page 7: ...evice via the onboard JTAG port For maximum design flexibility the EVK has 4 free programmable user switches as well as 36 free of use FPGA I Os routed to two connectors 3 2 Board details The main specifications for the evaluation board are summarized in Table 1 below Parameter Description Value VIN EVK Input voltage 10 V to 24 V V_5 0 Output voltage BD9F500QUZ 5 0 V IOUT0 Max output current BD9F5...

Page 8: ... 2022 ROHM Co Ltd 65UG018E Rev 001 July 2022 User s Guide 3 3 Power tree Figure 2 shows an overview of the overall system indicating the required voltages to power up the key components Figure 2 power tree ...

Page 9: ... FPGA start up LED303 INIT is on when the initialization of the FPGA s configuration memory is successful LED304 DONE indicates the successful completion of configuration 3 5 Power up To power up the board follow these steps 1 Remove both jumpers of connector CN130 position 1 2 and 3 4 2 Set switches OSC SW302 High MODE SW303 Low USER2 SW502 Low 3 Connect a 24V 1 5A DC supply voltage to the input ...

Page 10: ...ttons and two system switches bottom 4 user switches The system buttons and switches SW301 to SW304 have the following functions SW301 Reset system reset pushbutton Pushing this button resets and restarts the system SW302 OSC oscillator activation switch Default High Low output of oscillator is high impedance High oscillator provides specified frequency output 200MHz SW303 MODE configuration mode ...

Page 11: ...pins that can be connected to free input pins of the Spartan 7 FPGA INTB this open drain pin is asserted to low level when PMIC indicates a warning It can be connected to pin F15 of the FPGA by inserting the 0R resistor R563 Make sure that you program the FPGA such that pin F15 is high impedance or high level during start up R563 is not mounted on board default ERRB this open drain pin is asserted...

Page 12: ...are routed to the connectors CN502 and CN503 Figure 6 general purpose FPGA I Os CN502 IO_L4P_T0_D04_14 Pin 1 Pin 11 IO_L9P_T1_DQS_14 IO_L4N_T0_D05_14 Pin 2 Pin 12 IO_L9N_T1_DQS_D13_14 IO_L5P_T0_D06_14 Pin 3 Pin 13 IO_L11P_T1_SRCC_14 IO_L5N_T0_D07_14 Pin 4 Pin 14 IO_L11N_T1_SRCC_14 IO_L6N_T0_D08_VREF_14 Pin 5 Pin 15 IO_L12P_T1_MRCC_14 IO_L7P_T1_D09_14 Pin 6 Pin 16 IO_L12N_T1_MRCC_14 IO_L7N_T1_D10_1...

Page 13: ...9N_T1_DQS_AD3N_15 IO_L5P_T0_AD9P_15 Pin 7 Pin 17 IO_L10P_T1_AD11P_15 IO_L5N_T0_AD9N_15 Pin 8 Pin 18 IO_L10N_T1_AD11N_15 IO_L6P_T0_15 Pin 9 Pin 19 IO_L11P_T1_SRCC_15 GND Pin 10 Pin 20 V_1 8 Table 5 Pin out connector CN503 3 9 JTAG interface To access the Spartan 7 FPGA the board offers a JTAG connector interface to read and write data to the FPGA Figure 7 JTAG connector CN501 open Pin 1 Pin 2 V_1 8...

Page 14: ... signals are related to the supply voltage of PMIC and EEPROM 5V See below the pin assignment of the I2C interface TP132 GND TP133 SDA TP134 SCL Figure 9 I2C interface 4 Testing default FPGA software For testing the default demo software of the board follow the steps as described in the above section Power up When USER2 switch SW502 is in Low position the core current toggles with a frequency of 5...

Page 15: ...e current is measured with a current probe But first remove resistors R201 R207 R208 and R209 on the backside of the PCB Insert a loop wire instead The current probe can measure the current through the wire now The result should look like the measurement below Figure 12 measuring core voltage and core current current probe ...

Page 16: ...V 3 1 8V 4 1 35V 2 5V 3 3V 5 0 675V 6 Troubleshooting Power supply Primary buck regulator BD9F500 the primary buck regulator provides 5V to power the PMIC BD96801 Please verify the 5V output at TP3 V_5 0 and TP4 GND PMIC BD96801 the PMIC starts up when first inserting a jumper between pins 1 2 of connector CN130 and then a jumper between pins 3 4 of the same connector When the PMIC has successfull...

Page 17: ...ector Check if 5V of BD9F500 is present TP3 and TP4 LED100 INTB LED101 ERRB and or LED102 PRSTB is on Remove EN and STBY jumpers from CN130 Re insert first STBY jumper position 1 2 and then EN jumper position 3 4 For further diagnosis connect external I2C USB controller board to Spartan 7 EVK and to PC laptop Read status registers of PMIC BD96801 PMIC 7 bit slave address is 0x60h See data sheet of...

Page 18: ...18 36 User s Guide BD96801 SPA7 EVK 301 2022 ROHM Co Ltd 65UG018E Rev 001 July 2022 7 Schematic and BOM Figure 14 schematic of power supply stage 1 2 ...

Page 19: ...19 36 User s Guide BD96801 SPA7 EVK 301 2022 ROHM Co Ltd 65UG018E Rev 001 July 2022 Figure 15 schematic of power supply stage 2 2 ...

Page 20: ...20 36 User s Guide BD96801 SPA7 EVK 301 2022 ROHM Co Ltd 65UG018E Rev 001 July 2022 Figure 16 schematic of system circuit 1 4 ...

Page 21: ...21 36 User s Guide BD96801 SPA7 EVK 301 2022 ROHM Co Ltd 65UG018E Rev 001 July 2022 Figure 17 schematic of system circuit 2 4 ...

Page 22: ...22 36 User s Guide BD96801 SPA7 EVK 301 2022 ROHM Co Ltd 65UG018E Rev 001 July 2022 Figure 18 schematic of system circuit 3 4 ...

Page 23: ...23 36 User s Guide BD96801 SPA7 EVK 301 2022 ROHM Co Ltd 65UG018E Rev 001 July 2022 Figure 19 schematic of system circuit 4 4 ...

Page 24: ...1 C233 C236 C241 C410 C419 0 47uF 6 3V 10 0603 Murata GRM033R60J474KE90D 15 C207 C208 C210 C213 0 22uF 6 3V 20 X5R 0603 Murata GRM033R60J224ME15D 16 C209 C214 4 7uF 6 3V 20 0402 Murata GRM155R60J475ME87D 17 C211 100uF 6 3V 20 X5R 0805 Murata GRM21BR60J107ME15L 18 C215 C216 C223 C224 C229 C232 C234 C237 C238 C239 C242 C243 C244 C411 C412 C413 C414 C415 C416 C417 C418 C420 C421 C422 C423 C424 C425 C...

Page 25: ... R317 R318 Res Thick Film 0402 220 Ohm 5 1 16W 200ppm C Molded SMD SMD Paper T R Rohm SFR01MZPJ221 40 R42 R44 R50 R51 R52 R57 R100 R102 R104 R105 R206 R401 Res Thick Film 0603 0 Ohm Jumper Molded SMD Paper T R Vishay CRCW06030000Z0ECHP 41 R56 R130 R131 Res Thick Film 0603 10K Ohm 1 1 10W 100ppm C Molded SMD SMD Paper T R Rohm SFR03EZPF1002 42 R135 R136 R137 R303 R324 R501 R502 Res Thick Film 0402 ...

Page 26: ...1 Synchronous buck converter 4 5 V to 36 V Input 5 A Integrated MOSFET VMMP16LZ3030 pkg Rohm BD9F500QUZ 58 U2 BD96801 PMIC Rohm BD96801 59 U3 I2C bus EEPROM 2 wire 1kbit SOP8 Rohm BR24T01F WGE2 60 U4 Termination regulator DDR SDRAMs SOP J8 Rohm BD35395FJ ME2 61 U201 Spartan 7 FPGA CSGA324 wire bond chip scale 0 8mm pitch Xilinx XC7S50 2CSGA324C 62 U302 Frequency oscillator 200MHz 3 2mm x 2 5mm 50p...

Page 27: ...27 36 User s Guide BD96801 SPA7 EVK 301 2022 ROHM Co Ltd 65UG018E Rev 001 July 2022 8 PCB layout Figure 20 top layer ...

Page 28: ...28 36 User s Guide BD96801 SPA7 EVK 301 2022 ROHM Co Ltd 65UG018E Rev 001 July 2022 Figure 21 inner layer 1 ...

Page 29: ...29 36 User s Guide BD96801 SPA7 EVK 301 2022 ROHM Co Ltd 65UG018E Rev 001 July 2022 Figure 22 inner layer 2 ...

Page 30: ...30 36 User s Guide BD96801 SPA7 EVK 301 2022 ROHM Co Ltd 65UG018E Rev 001 July 2022 Figure 23 inner layer 3 ...

Page 31: ...31 36 User s Guide BD96801 SPA7 EVK 301 2022 ROHM Co Ltd 65UG018E Rev 001 July 2022 Figure 24 inner layer 4 ...

Page 32: ...32 36 User s Guide BD96801 SPA7 EVK 301 2022 ROHM Co Ltd 65UG018E Rev 001 July 2022 Figure 25 inner layer 5 ...

Page 33: ...33 36 User s Guide BD96801 SPA7 EVK 301 2022 ROHM Co Ltd 65UG018E Rev 001 July 2022 Figure 26 inner layer 6 ...

Page 34: ...34 36 User s Guide BD96801 SPA7 EVK 301 2022 ROHM Co Ltd 65UG018E Rev 001 July 2022 Figure 27 bottom layer ...

Page 35: ...35 36 User s Guide BD96801 SPA7 EVK 301 2022 ROHM Co Ltd 65UG018E Rev 001 July 2022 Figure 28 silkscreen top ...

Page 36: ...36 36 User s Guide BD96801 SPA7 EVK 301 2022 ROHM Co Ltd 65UG018E Rev 001 July 2022 Figure 29 silkscreen bottom ...

Page 37: ...uch technical information The Products specified in this document are not designed to be radiation tolerant For use of our Products in applications requiring a high degree of reliability as exemplified below please contact and consult with a ROHM representative transportation equipment i e cars ships trains primary communication equipment traffic lights fire crime prevention safety equipment medic...

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