Texas Instruments BQ25756E User Manual
Texas Instruments BQ25756E User Manual

Texas Instruments BQ25756E User Manual

Evaluation module

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EVM User's Guide: BQ25756EVM
BQ25756E Evaluation Module
Description
The BQ25756EVM evaluation module (EVM) is a
complete evaluation system for the BQ25756 IC, a
buck-boost battery charge controller with a wide input
range of 4.2V - 70V, a wide output voltage range of up
to 70V, and bi-directional capabilities.
The BQ25756EVM has a max input and output of 55V
and a max charge current of 10A.
Get Started
1. Order the EVM on
ti.com
2. Order the
EV2400
or
with the EVM
3. Download the BQ25756 BQZ file or use the
Charger GUI
4. Download the BQ25756 EVM design files on
ti.com
SLUUCT7D – MAY 2023 – REVISED MAY 2025
Submit Document Feedback
USB2ANY
to communicate
TI
Copyright © 2025 Texas Instruments Incorporated
Features
Wide input voltage operating range: 4.2 V–55 V
Wide output operating range: up to 55V with
CC/CV support for:
– 2– to 13–Cell Li-Ion
– 2– to 14–Cell LiFePO4
Synchronous buck-boost DC/DC charge controller
with NFET drivers
– Adjustable switching frequency from 200kHz to
600kHz
– Optional synchronization to external clock
– Optional gate driver supply input for optimized
efficiency
Resistor-programmable standalone with added I2C
Mode
Built in MPPT to maximize power from solar panel
arrays
Power up from battery (reverse mode) output 4V to
55V
High safety integration
– Adjustable input overvoltage and undervoltage
protection
– Output Overvoltage and overcurrent protection
Description
BQ25756E Evaluation Module
1

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Summary of Contents for Texas Instruments BQ25756E

  • Page 1 Power up from battery (reverse mode) output 4V to • High safety integration – Adjustable input overvoltage and undervoltage protection – Output Overvoltage and overcurrent protection SLUUCT7D – MAY 2023 – REVISED MAY 2025 BQ25756E Evaluation Module Submit Document Feedback Copyright © 2025 Texas Instruments Incorporated...
  • Page 2: Kit Contents

    Besides the I2C host-controlled charging mode, the device also supports programmable hardware limits. Input and output current regulation targets can be set with single resistor on the IIN and IOUT pins, respectively. BQ25756E Evaluation Module SLUUCT7D – MAY 2023 – REVISED MAY 2025 Submit Document Feedback Copyright © 2025 Texas Instruments Incorporated...
  • Page 3: Personal Safety

    Evaluation Module Overview 1.4 General Texas Instruments High Voltage Evaluation (TI HV EMV) User Safety Guidelines WARNING Always follow TI's set-up and application instructions, including use of all interface components within their recommended electrical rated voltage and power limits. Always use electrical safety precautions to help verify your personal safety and those working around you.
  • Page 4: General Safety Information

    The circuit module has signal traces, components, and component leads on the bottom of the board. This can result in exposed voltages, hot surfaces, or sharp edges. Do not reach under the board during operation. BQ25756E Evaluation Module SLUUCT7D – MAY 2023 – REVISED MAY 2025 Submit Document Feedback Copyright © 2025 Texas Instruments Incorporated...
  • Page 5 CAUTION The board has no fuse installed and relies on the external voltage source current limit to verify circuit protection. SLUUCT7D – MAY 2023 – REVISED MAY 2025 BQ25756E Evaluation Module Submit Document Feedback Copyright © 2025 Texas Instruments Incorporated...
  • Page 6 Connection for external gate drive J7-Power Connector Connection for VAC and BAT J8-Communication Port Connection for EXT_DRV, /INT, I2C, /PG, and 3.3V BQ25756E Evaluation Module SLUUCT7D – MAY 2023 – REVISED MAY 2025 Submit Document Feedback Copyright © 2025 Texas Instruments Incorporated...
  • Page 7: Recommended Operating Conditions

    The input sense resistor is optional and the sense resistor can be removed. For an USB-C EPR operation, a 5mΩ sense resistor is needed. SLUUCT7D – MAY 2023 – REVISED MAY 2025 BQ25756E Evaluation Module Submit Document Feedback Copyright © 2025 Texas Instruments Incorporated...
  • Page 8: Communication Interface Setup

    EVM and the PC for a connection to be established. Also, update the USB2ANY to the latest version with the USB2ANY Explorer Software. BQ25756E Evaluation Module SLUUCT7D – MAY 2023 – REVISED MAY 2025 Submit Document Feedback Copyright © 2025 Texas Instruments Incorporated...
  • Page 9: Power Supplies

    5. EV2400 Communication Kit or USB2ANY Communication Kit: 6. Software: For software setup, refer to section 2.4 Communication Interface Setup SLUUCT7D – MAY 2023 – REVISED MAY 2025 BQ25756E Evaluation Module Submit Document Feedback Copyright © 2025 Texas Instruments Incorporated...
  • Page 10: Equipment Setup

    C PORT 2 on the EV2400 b. Turn on the computer and open the bqStudio software. c. Select Charger and click the Next button. BQ25756E Evaluation Module SLUUCT7D – MAY 2023 – REVISED MAY 2025 Submit Document Feedback Copyright © 2025 Texas Instruments Incorporated...
  • Page 11 Connect J4 to the USB2ANY. Turn on the computer. b. Navigate to the TI Charger GUI website and select the charger you are using: SLUUCT7D – MAY 2023 – REVISED MAY 2025 BQ25756E Evaluation Module Submit Document Feedback Copyright © 2025 Texas Instruments Incorporated...
  • Page 12 This is the Charger Configuration window. Click the Read All Register button at the top, then set WATCHDOG and EN_CHG to disabled. Set ICHG_REG to 4000mA and IPRECHG to 1000mA BQ25756E Evaluation Module SLUUCT7D – MAY 2023 – REVISED MAY 2025 Submit Document Feedback Copyright © 2025 Texas Instruments Incorporated...
  • Page 13 11. Set EN_CHG to enabled and plug in Jumper 13. 12. Set power supply 1 to 40 V, measure: SLUUCT7D – MAY 2023 – REVISED MAY 2025 BQ25756E Evaluation Module Submit Document Feedback Copyright © 2025 Texas Instruments Incorporated...
  • Page 14 I(J1(IAC)) = 5 A ± 0.5 A V(J3(VBAT)) = 23.5 V ± 0.5 V I(J3(IBAT)) = 2 A ± 0.5 A BQ25756E Evaluation Module SLUUCT7D – MAY 2023 – REVISED MAY 2025 Submit Document Feedback Copyright © 2025 Texas Instruments Incorporated...
  • Page 15 Avoid physical contact with any part of the board when power is active PGND Output power limited by circuit operating conditions and power stage components Figure 3-1. BQ25756EVM Schematic SLUUCT7D – MAY 2023 – REVISED MAY 2025 BQ25756E Evaluation Module Submit Document Feedback Copyright © 2025 Texas Instruments Incorporated...
  • Page 16 C517 C518 C519 C506 C507 15uF 15uF 15uF 15uF 15uF 15uF 100nF D 100V 100k 100k 100V 1µF 100V PGND BQ25756E Evaluation Module SLUUCT7D – MAY 2023 – REVISED MAY 2025 Submit Document Feedback Copyright © 2025 Texas Instruments Incorporated...
  • Page 17 TP37 TP38 TP39 TP47 TP40 HIDRV1 BTST1 HIDRV2 BTST2 STAT1 /INT STAT2 3V3_PULLUP PGND PGND PGND PGND PGND PGND PGND SLUUCT7D – MAY 2023 – REVISED MAY 2025 BQ25756E Evaluation Module Submit Document Feedback Copyright © 2025 Texas Instruments Incorporated...
  • Page 18 For BQ25756 variant, Install JP1, JP4, JP5, JP6, JP9, JP10, pin 1-2 of JP12, JP13, JP14, JP15, and JP16 1. DNP means "Do Not Populate". BQ25756E Evaluation Module SLUUCT7D – MAY 2023 – REVISED MAY 2025 Submit Document Feedback Copyright © 2025 Texas Instruments Incorporated...
  • Page 19: Pcb Layout

    Hardware Design Files 3.2 PCB Layout Figure 3-2. Top Layer and Overlay Figure 3-3. Layer 2 -GND SLUUCT7D – MAY 2023 – REVISED MAY 2025 BQ25756E Evaluation Module Submit Document Feedback Copyright © 2025 Texas Instruments Incorporated...
  • Page 20 Hardware Design Files www.ti.com Figure 3-4. Signal Layer 1 Figure 3-5. Signal Layer 2 BQ25756E Evaluation Module SLUUCT7D – MAY 2023 – REVISED MAY 2025 Submit Document Feedback Copyright © 2025 Texas Instruments Incorporated...
  • Page 21 Hardware Design Files Figure 3-6. Layer 5 - GND Figure 3-7. Bottom Layer SLUUCT7D – MAY 2023 – REVISED MAY 2025 BQ25756E Evaluation Module Submit Document Feedback Copyright © 2025 Texas Instruments Incorporated...
  • Page 22 H1, H2, H3, H4 SJ-5303 (CLEAR) Bumpon, Hemisphere, 0.44 X 0.20, Clear Transparent Bumpon J1, J3 TB005-762-02BE CUI Devices TERM_CONN BQ25756E Evaluation Module SLUUCT7D – MAY 2023 – REVISED MAY 2025 Submit Document Feedback Copyright © 2025 Texas Instruments Incorporated...
  • Page 23 RES, 133kΩ, 1%, 0.125 W, AEC-Q200 Grade 0, 0805 249k ERJ-PB6B2493V Panasonic Thick Film Resistors - SMD 0805 Anti-Surge Res. 0.1%, 249KΩ SLUUCT7D – MAY 2023 – REVISED MAY 2025 BQ25756E Evaluation Module Submit Document Feedback Copyright © 2025 Texas Instruments Incorporated...
  • Page 24 Samtec Shunt, 100mil, Gold plated, Black Shunt JP2, SH-JP3, SH-JP4, SH- JP5, SH-JP6, SH-JP7, SH- JP8, SH-JP9, SH-JP10, SH- JP11 BQ25756E Evaluation Module SLUUCT7D – MAY 2023 – REVISED MAY 2025 Submit Document Feedback Copyright © 2025 Texas Instruments Incorporated...
  • Page 25 TP47 BQ25756RRVT Texas Instruments BQ25756RRVT VQFN36 LT3010EMS8E-PBF Analog Devices Linear Voltage Regulator IC Positive MSOP8 Adjustable 1 Output 50mA 8-MSOP-EP SLUUCT7D – MAY 2023 – REVISED MAY 2025 BQ25756E Evaluation Module Submit Document Feedback Copyright © 2025 Texas Instruments Incorporated...
  • Page 26: Additional Information

    Changes from Revision * (May 2023) to Revision A (June 2023) Page • Added schematic and PCB Layout images...................... • Changed Bill of Materials table.........................22 BQ25756E Evaluation Module SLUUCT7D – MAY 2023 – REVISED MAY 2025 Submit Document Feedback Copyright © 2025 Texas Instruments Incorporated...
  • Page 27 STANDARD TERMS FOR EVALUATION MODULES Delivery: TI delivers TI evaluation boards, kits, or modules, including any accompanying demonstration software, components, and/or documentation which may be provided together or separately (collectively, an “EVM” or “EVMs”) to the User (“User”) in accordance with the terms set forth herein.
  • Page 28 www.ti.com Regulatory Notices: 3.1 United States 3.1.1 Notice applicable to EVMs not FCC-Approved: FCC NOTICE: This kit is designed to allow product developers to evaluate electronic components, circuitry, or software associated with the kit to determine whether to incorporate such items in a finished product and software developers to write software applications for use with the end product.
  • Page 29 www.ti.com Concernant les EVMs avec antennes détachables Conformément à la réglementation d'Industrie Canada, le présent émetteur radio peut fonctionner avec une antenne d'un type et d'un gain maximal (ou inférieur) approuvé pour l'émetteur par Industrie Canada. Dans le but de réduire les risques de brouillage radioélectrique à...
  • Page 30 www.ti.com EVM Use Restrictions and Warnings: 4.1 EVMS ARE NOT FOR USE IN FUNCTIONAL SAFETY AND/OR SAFETY CRITICAL EVALUATIONS, INCLUDING BUT NOT LIMITED TO EVALUATIONS OF LIFE SUPPORT APPLICATIONS. 4.2 User must read and apply the user guide and other available documentation provided by TI regarding the EVM prior to handling or using the EVM, including without limitation any warning or restriction notices.
  • Page 31 Notwithstanding the foregoing, any judgment may be enforced in any United States or foreign court, and TI may seek injunctive relief in any United States or foreign court. Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265 Copyright © 2023, Texas Instruments Incorporated...
  • Page 32 TI products. TI’s provision of these resources does not expand or otherwise alter TI’s applicable warranties or warranty disclaimers for TI products. TI objects to and rejects any additional or different terms you may have proposed. IMPORTANT NOTICE Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265 Copyright © 2025, Texas Instruments Incorporated...

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