Texas Instruments BQ25820EVM Evaluation Module

Texas Instruments BQ25820EVM Evaluation Module provides a proven design to evaluate the BQ25820 IC. The BQ25820 IC is a buck battery charge controller with direct power path control. The device features a wide input range of 4.2V to 70V, a wide output voltage range of up to 70V, and bidirectional capacities.

The TI BQ25820EVM includes a maximum input and output of 55V and a maximum 10A charge current.

Features

Synchronous switch mode buck charger for 1s to 13s battery or super cap configuration for up to 20A charging with 50mA resolution
Built-in MPPT to maximize power from solar panel arrays

Wide input and output voltage range
Power up from battery (reverse mode) output 4V to 55V
Includes inductor autodetection to optimize circuit performance
Direct power path control

Applications

Cordless power and garden tools
Solar backup charger
Energy storage systems
Drone
Ultrasound

X-ray systems
Electronic hospital beds and bed control
Multiparameter patient monitors
Vacuum robot

Specifications

Wide input voltage operating range of 4.2V to 55V
Wide output operating range up to 55V with CC/CV support for – 1– to 13–Cell Li-Ion– 1– to 14–Cell LiFePO₄
Synchronous buck 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