SLUAAX9
June 2025
BQ25756
1
Abstract
Trademarks
1
Introduction
2
MOSFET Power Losses in Buck and Boost Chargers
2.1
Buck Mode Losses
2.2
Boost Mode Losses
2.3
Closing Thoughts for FET Losses
3
Evaluating MOSFETs Using the Design Calculator
3.1
Correlating MOSFET Data Sheet Parameters With the Design Calculator Parameters
3.2
Design Calculator MOSFET Comparison Example
4
BOM Evaluation
5
Summary
6
References
6
References
Texas Instruments,
GaN to the rescue! Part 1: Body-diode reverse recovery
, Technical Article
Texas Instruments,
BQ25756: Standalone/I
2
C Controlled, 1- to 14-Cell Bidirectional Buck-Boost Battery Charge Controller
, data sheet
Texas Instruments,
BQ25750: Standalone/I
2
C Controlled, 1- to 14-Cell Bidirectional Buck-Boost Battery Charge Controller with Direct Power Path Control
, data sheet
Texas Instruments,
BQ25758: I
2
C Controlled, Bidirectional Buck-Boost Controller with Wide Voltage Range
, data sheet
Texas Instruments,
BQ25756-Design-Calc
, design calculator
Vishay,
Measuring Power MOSFET Characteristics
, application note