Texas Instruments Evaluation Module for BQ24170 1.6-MHz Synchronous Switch-Mode Li-Ion and Li-Polymer Battery Charger BQ BQ24170EVM-610-5V 데이터 시트
제품 코드
BQ24170EVM-610-5V
Introduction
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1
Introduction
1.1
EVM Features
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Evaluation module for bq24170
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Stand-alone synchronous switch-mode, battery-charge controller
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Integrated N-MOSFETs and power path selector
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CELL pin setting up to 12.6-V battery voltage; 1, 2, or 3 cells with 4.2 V/cell
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Input operating range: 4.5 V–16 V
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LED indication for charge status
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Test points for key signals available for testing purposes; easy probe hook-up.
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Jumpers available; easy-to-change setting
1.2
General Description
The bq24170 is highly integrated stand-alone Li-ion and Li-polymer switch-mode battery charge controllers
with two integrated N-channel power MOSFETs and power path selector gate driver. It offers a
constant-frequency synchronous PWM controller with high accuracy regulation of input current, charge
current and voltage. It also provides battery detection, pre-conditioning, charge termination, and charge
status monitoring.
with two integrated N-channel power MOSFETs and power path selector gate driver. It offers a
constant-frequency synchronous PWM controller with high accuracy regulation of input current, charge
current and voltage. It also provides battery detection, pre-conditioning, charge termination, and charge
status monitoring.
The bq24170 automatically enters a low-quiescent current sleep mode when the input voltage falls below
the battery voltage. The bq24170 charges one, two or three cells (selected by CELL pin), supporting up to
a 4-A charge current. The bq24170 is available in a 24-pin, 3.5 x 5.5 mm
the battery voltage. The bq24170 charges one, two or three cells (selected by CELL pin), supporting up to
a 4-A charge current. The bq24170 is available in a 24-pin, 3.5 x 5.5 mm
2
, thin QFN package.
For details, see the bq24170 data sheet (
).
1.3
I/O Description
Table 1. I/O Description
Jack
Description
J1–VIN
Positive input
J1–PGND
Negative input
J2–VSYS
Connected to system
J2–VBAT
Connected to charger output
J2–PGND
Ground
J2–TS_EXT
Temperature qualification voltage Input
2
bq24170EVM Stand-Alone Synchronous, Switch-Mode, Battery-Charge
SLUU463 – November 2010
Controller With Integrated N-MOSFETs and Power Path Selector
Copyright © 2010, Texas Instruments Incorporated