Texas Instruments BQ24271EVM-758 Evaluation Module BQ24271EVM-758 BQ24271EVM-758 Datenbogen
Produktcode
BQ24271EVM-758
Introduction
1
Introduction
1.1
bq2427x IC Features
The bq24270/271 integrates a synchronous PWM controller, power MOSFETs, input-current sensing,
high-accuracy current and voltage regulation, charge termination, and power path management into a
QFN package. The charge parameters can be programmed through an I
high-accuracy current and voltage regulation, charge termination, and power path management into a
QFN package. The charge parameters can be programmed through an I
2
C interface. Key integrated circuit
(IC) features include:
•
High-efficiency, fully integrated, NMOS-NMOS, synchronous buck charger with 1.5-MHz frequency
•
Integrated power FETs for up to 1.5-A charge rate
•
Power path management between battery and system voltages
For details, see the bq24270/271 data sheet (
).
1.2
bq24270/271EVM Features
The bq24270/271EVM evaluation module (EVM) is a complete charger module for evaluating compact,
flexible, high-efficiency, USB-friendly, switch-mode battery charge. The module also evaluates power path
management solutions for single-cell, Li-ion and Li-polymer battery-powered systems used in a wide range
of portable applications. Key EVM features include:
flexible, high-efficiency, USB-friendly, switch-mode battery charge. The module also evaluates power path
management solutions for single-cell, Li-ion and Li-polymer battery-powered systems used in a wide range
of portable applications. Key EVM features include:
•
Input power connector for USB input
•
Programmable battery voltage, charge current, input current, and status via I
2
C™ interface
•
USB operating range of 4.2 V – 6 V
•
LED indication for status signals
•
Test points for key signals available for testing purposes. Easy probe hook-up
2
QFN-Packaged bq24270/271 Evaluation Modules
SLUU924 – April 2012
Copyright © 2012, Texas Instruments Incorporated