Introduction
1
Introduction
1.1
bq24188 IC Features
The bq24188 device integrates a synchronous PWM controller, power MOSFETs, input-current sensing,
high-accuracy current and voltage regulation, charge termination and power path management into a
small WCSP package. The charge parameters can be programmed through an I
2
C interface. Key IC
features include:
•
High-efficiency, fully-integrated, NMOS-NMOS, synchronous buck charger with 1.5-MHz frequency
•
Charge time optimizer
•
Integrated power FETs for up to 2-A charge rate
•
5-V, 1-A OTG VBUS supply
•
Power path management between battery and system voltages
For details, see the bq24188 data sheet (
).
1.2
bq24188 EVM Features
The bq24188 evaluation module (EVM) on PCB PWR691 provide a complete charger module for
evaluating compact, flexible, high-efficiency, USB-friendly, switch-mode battery charge and power path
management solution for single-cell, Li-ion and Li-polymer battery-powered systems used in a wide range
of portable applications. Key EVM features include:
•
Terminal blocks and standard headers for IN, SYS, BAT, TS; USB connector for IN
•
Programmable battery voltage, charge current, input current, and status via I
2
C interface
•
IN operating up to 10.5 V for bq24188
•
LED indication for status signals
•
Test points for key signals available for testing purposes. Easy probe hook-up
2
User's Guide for WCSP-Packaged bq24188 2-A Battery Charger Evaluation
SLUUB72 – January 2015
Module
Copyright © 2015, Texas Instruments Incorporated