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7 BQ79631-Q1 EVM Schematic, Assembly, Layout, and BOM

This section provides the EVM schematic, assembly, layout and BOM in their respective sections.

7.1 Schematics

Figure 7-1. Power Supply

BQ79631-Q1 EVM Schematic, Assembly, Layout, and BOM

22

BQ79631EVM Evaluation Module

SLUUCC3 – FEBRUARY 2021

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Copyright © 2021 Texas Instruments Incorporated

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Summary of Contents for BQ79631EVM

Page 1: ...e Networks 13 4 4 Current Sense 17 4 5 GPIO Connections 17 5 Quick Start Guide 19 5 1 Launch Pad Connection and Example Code 19 5 2 USB2ANY Connection with GUI 19 6 Physical Dimensions 21 6 1 Board Di...

Page 2: ...Solder 31 Figure 7 17 Drill Drawing 32 List of Tables Table 2 1 Key Electrical Parameters 6 Table 4 1 Jumper Placements 11 Table 4 2 J10 Serial Connector 11 Table 4 3 Pin Descriptions 11 Table 4 4 Pin...

Page 3: ...onal safety and those working around you Contact TI s Product Information Center http support ti com for further information Save all warnings and instructions for future reference WARNING Failure to...

Page 4: ...ly accessible and active high voltages a De energize the TI HV EVM and all its inputs outputs and electrical loads before performing any electrical or other diagnostic measurements Revalidate that TI...

Page 5: ...ed with care by a professional For safety use of isolated test equipment with overvoltage and overcurrent protection is highly recommended Figure 1 4 Figure 1 5 www ti com General Texas Instruments Hi...

Page 6: ...l communication bus The PC GUI allows configuration all BQ796XXEVMs to monitor cells and other analog data channels control balancing and monitor details of any faults For more information on the inst...

Page 7: ...emperature 40 C to 105 C Nominal operating temperature 20 C to 60 C Cell balancing current Approximately 200 mA 80 C www ti com General Description SLUUCC3 FEBRUARY 2021 Submit Document Feedback BQ796...

Page 8: ...ated with a host via either a UART or daisy chain communication connection The BQ79631 will remain idle until a command is received from the host The BQ79631 can support a host PC or microcontroller v...

Page 9: ...so possible to use the BQ79631EVM in a system of other BQ devices If the user wishes test the BQ79631EVM in a system of other BQ79631EVMs this is possible through use of the daisy chain communications...

Page 10: ...bridge device and the BQ79631EVM as a stack device If V I synchronization is a priority it is recommended in the final design to configure the system with two separate BQ79600 devices as seen in figu...

Page 11: ...com which includes the proper 10 pin cable Table 4 2 J10 Serial Connector Designator Manufacturer Part Number Mating Connector J10 Samtec Inc Manufacturer TSW 105 08 L D RA 10 pin ribbon connector pa...

Page 12: ...sistors so that the L4 and L3 chokes are not bypassed Transformer If the user would like to use the transformer to handle the daisy chain communications desolder the following resistors R148 R149 R150...

Page 13: ...cautions are taken The user should assume the entire board is live with high voltage once an HV connection is made The high voltage connection points and the areas on the EVM where these voltages are...

Page 14: ...Plus network HV_Neg 400 800 V Negative connection for HV_Plus network HV_Fuse 400V 800 V Positive connection for HV_Fuse network HV_Extra1_Plus 400 800 V Positive connection for the 1st of 2 customiza...

Page 15: ...The blue regions in the figure above show the jumpers that must be populated in order to connect each network to the VCC40V supply 4 3 4 Switches In each of the high voltage networks on the BQ79631EVM...

Page 16: ...uffer were not to be included in the user s final design Figure 4 6 Buffer Bypass Jumpers Table 4 8 Bypass Jumpers Jumper Network J35 HV_Plus J33 HV_Fuse J34 LINK_Plus J4 Charge_Plus 4 3 6 Insulation...

Page 17: ...ugh the shunt and shunt connectors 4 4 2 VCSamp_Out For bidirectional over current detection it is recommended to utilize the VCSamp_Out circuit on the EVM This circuit connects to VC1 and utilizes de...

Page 18: ...prioritize low latency over high accuracy it is recommended to configure the GPIO pins to use the AUX ADC The user may access GPIO1 3 on the connection points near the center of the board and GPIO4 8...

Page 19: ...UATX nFAULT J11 pin 2 J2 pin 5 PA7 GND J11 pin 1 J3 pin 2 GND 5 1 4 Software The software provides a command API and drivers that are capable of implementing the examples provided in BQ79631 Q1 Softw...

Page 20: ...cable for the UART connections on J10 The USB2ANY has a USB Mini B connector on the right side Plug the provided USB cable or any USB cable with a Mini B connector into the USB2ANY Plug the other end...

Page 21: ...6 500 in Board height Top Tallest component GPIO Shunts is x xx in x x mm above PCB Bottom Tallest component if populated Transformers is x xx in x xx mm above PCB Depopulated by default Figure 6 1 Bo...

Page 22: ...ematic assembly layout and BOM in their respective sections 7 1 Schematics Figure 7 1 Power Supply BQ79631 Q1 EVM Schematic Assembly Layout and BOM www ti com 22 BQ79631EVM Evaluation Module SLUUCC3 F...

Page 23: ...Figure 7 2 AFE www ti com BQ79631 Q1 EVM Schematic Assembly Layout and BOM SLUUCC3 FEBRUARY 2021 Submit Document Feedback BQ79631EVM Evaluation Module 23 Copyright 2021 Texas Instruments Incorporated...

Page 24: ...7 3 High Voltage Sense BQ79631 Q1 EVM Schematic Assembly Layout and BOM www ti com 24 BQ79631EVM Evaluation Module SLUUCC3 FEBRUARY 2021 Submit Document Feedback Copyright 2021 Texas Instruments Incor...

Page 25: ...Detection Figure 7 5 Current Sense www ti com BQ79631 Q1 EVM Schematic Assembly Layout and BOM SLUUCC3 FEBRUARY 2021 Submit Document Feedback BQ79631EVM Evaluation Module 25 Copyright 2021 Texas Inst...

Page 26: ...Figure 7 7 Communications COMMH and COMML BQ79631 Q1 EVM Schematic Assembly Layout and BOM www ti com 26 BQ79631EVM Evaluation Module SLUUCC3 FEBRUARY 2021 Submit Document Feedback Copyright 2021 Texa...

Page 27: ...gure 7 8 Hardware www ti com BQ79631 Q1 EVM Schematic Assembly Layout and BOM SLUUCC3 FEBRUARY 2021 Submit Document Feedback BQ79631EVM Evaluation Module 27 Copyright 2021 Texas Instruments Incorporat...

Page 28: ...op Overlay Figure 7 10 Bottom Overlay BQ79631 Q1 EVM Schematic Assembly Layout and BOM www ti com 28 BQ79631EVM Evaluation Module SLUUCC3 FEBRUARY 2021 Submit Document Feedback Copyright 2021 Texas In...

Page 29: ...Solder Figure 7 12 Top Layer www ti com BQ79631 Q1 EVM Schematic Assembly Layout and BOM SLUUCC3 FEBRUARY 2021 Submit Document Feedback BQ79631EVM Evaluation Module 29 Copyright 2021 Texas Instrument...

Page 30: ...Layer 1 Figure 7 14 Signal Layer 2 BQ79631 Q1 EVM Schematic Assembly Layout and BOM www ti com 30 BQ79631EVM Evaluation Module SLUUCC3 FEBRUARY 2021 Submit Document Feedback Copyright 2021 Texas Instr...

Page 31: ...Layer Figure 7 16 Bottom Solder www ti com BQ79631 Q1 EVM Schematic Assembly Layout and BOM SLUUCC3 FEBRUARY 2021 Submit Document Feedback BQ79631EVM Evaluation Module 31 Copyright 2021 Texas Instrum...

Page 32: ...e 7 17 Drill Drawing BQ79631 Q1 EVM Schematic Assembly Layout and BOM www ti com 32 BQ79631EVM Evaluation Module SLUUCC3 FEBRUARY 2021 Submit Document Feedback Copyright 2021 Texas Instruments Incorpo...

Page 33: ...Mechanics C62 1 4 7uF CAP CERM 4 7 uF 10 V 20 X7R 0805 0805 C2012X7R1A475M125AC TDK C68 1 0 47uF CAP CERM 0 47 uF 16 V 10 X7R AEC Q200 Grade 1 0603 0603 GCM188R71C474KA55D MuRata D1 D3 2 30V Diode Sc...

Page 34: ...te Bead 1000 ohm 100 MHz 0 2 A 0402 0402 BLM15BD102SN1D MuRata L3 L4 2 470uH Coupled inductor 470 uH 0 4 A 0 35 ohm SMD 5x3 3mm 744242471 Wurth Elektronik LBL1 1 Thermal Transfer Printable Labels 0 65...

Page 35: ...0 0603 0603 CRCW060310K0FKEA Vishay Dale R59 R60 R84 R85 R90 R159 6 10 0k RES 10 0 k 0 1 0 1 W 0603 0603 RG1608P 103 B T5 Susumu Co Ltd R95 R96 R97 3 100k RES 100 k 5 0 1 W AEC Q200 Grade 0 0603 0603...

Page 36: ...57 TP58 TP59 TP60 35 Test Point Miniature White TH White Miniature Testpoint 5002 Keystone TP43 TP45 2 Test Point Miniature Orange TH Orange Miniature Testpoint 5003 Keystone U1 1 Transformer Driver P...

Page 37: ...523 BZT52C5V1T 7 Diodes Inc J14 0 Terminal Block 5mm 2x1 R A TH Terminal Block 5mm 2x1 R A TH 1792863 Phoenix Contact L2 0 70 ohm Ferrite Bead 70 ohm 100 MHz 0 6 A 0402 0402 BLM15AG700SN1D MuRata R11...

Page 38: ...ther than TI b the nonconformity resulted from User s design specifications or instructions for such EVMs or improper system design or c User has not paid on time Testing and other quality control tec...

Page 39: ...These limits are designed to provide reasonable protection against harmful interference in a residential installation This equipment generates uses and can radiate radio frequency energy and if not in...

Page 40: ...instructions set forth by Radio Law of Japan which includes but is not limited to the instructions below with respect to EVMs which for the avoidance of doubt are stated strictly for convenience and s...

Page 41: ...any interfaces electronic and or mechanical between the EVM and any human body are designed with suitable isolation and means to safely limit accessible leakage currents to minimize the risk of electr...

Page 42: ...R DAMAGES ARE CLAIMED THE EXISTENCE OF MORE THAN ONE CLAIM SHALL NOT ENLARGE OR EXTEND THIS LIMIT 9 Return Policy Except as otherwise provided TI does not offer any refunds returns or exchanges Furthe...

Page 43: ...are subject to change without notice TI grants you permission to use these resources only for development of an application that uses the TI products described in the resource Other reproduction and...

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