I2C controlled, 5-A, 1-4 cell buck-boost charger evaluation module with dual-input selector


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The BQ25792 evaluation module (EVM) is used to evaluate the BQ25792 device. The BQ25792 is an integrated switched-mode buck-boost battery charge management device in HOTROD (QFN) package, intended for 1- to 4-series cell li-ion and li-polymer batteries from 3.6-V to 24-V input with programmable 750-KHz and 1500-KHz switching frequency. The I2C serial interface with charging and system settings makes the device a truly flexible solution. 

  • Easily evaluate the high-efficiency 5-A switch-mode buck-boost charger in the HOTROD (QFN) package
  • Use of EV2400 interface to switch between charge and USB on-the-go (OTG) as well as monitor charger status and faults as well as voltages and current with an integrated analog-to-digital converter (ADC)
  • Use of an onboard USB input adapter for connecting to a USB source and either communication through D+/D– to set the default input current limit
  • Onboard test points, sense resistors and jumpers facilitate measurement of high-efficiency and high accuracy voltage and current regulation
  • Bi-directional blocking NFETs included for evaluating dual input source selector, with jumpers to bypass


Not included

EV2400 which is required for operation

Battery charger ICs
BQ25792 I2C controlled, 5-A, 1-4 cell buck-boost charger with dual-input selector and USB PD 3.0 OTG output


Linear regulators (LDO)
TLV760 100-mA, 30-V, low-dropout voltage regulator

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Evaluation board

BQ25792EVM – I2C controlled, 5-A, 1-4 cell buck-boost charger evaluation module with dual-input selector

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Technical documentation

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Type Title Date
* User guide BQ25792EVM, BQ25796EVM, and BQ25798EVM (BMS034) Evaluation Module (Rev. B) Dec. 04, 2020
Data sheet BQ25792 I2C Controlled, 1-4 Cell, 5-A Buck-Boost Battery Charger datasheet (Rev. B) Mar. 15, 2021
Certificate BQ25792EVM EU Declaration of Conformity (DoC) Mar. 26, 2020

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