BQ25798 evaluation module I²C controlled 5-A, 1- to 4-cell buck-boost charger in QFN package


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The BQ25798BKUPEVM evaluation module (EVM) is used to evaluate the BQ25798 device in back-up mode applications. The BQ25798 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 or USB2ANY 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

Does not include EV2400 or USB2ANY, one of which is required for operation.

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Evaluation board

BQ25798BKUPEVM — BQ25798 evaluation module I²C controlled 5-A, 1- to 4-cell buck-boost charger in QFN package

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Technical documentation

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Type Title Date
* User guide BQ25792EVM, BQ25798EVM and BQ25798BKUPEVM (BMS034) Evaluation Module (Rev. D) Sep. 30, 2021
Certificate BQ25798BKUPEVM EU RoHS Declaration of Conformity (DoC) May 07, 2021

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