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Introduction
1
Introduction
1.1
EVM Features
•
Evaluation module for bq24180
•
High-efficiency, fully integrated NMOS-NMOS synchronous buck charger with 3-MHz frequency
•
Integrated power FETs for up to 1.5-A charge rate
•
Programmable battery voltage, charge current, and input current via I
•
Input operating range 4-V to 9.5-V normal operation and 9.5-V to 16-V limited operation
•
Switched battery power, DCOUT
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LED indication for status signals
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Test points for key signals available for testing purposes. Easy probe hook-up
•
Jumpers available. Easy-to-change connections.
1.2
General Description
The bq24180 evaluation module (EVM) is a complete charger module for evaluating a compact, flexible,
high-efficiency, USB-friendly switch-mode charge-management solution for single-cell Li-ion and
Li-polymer batteries used in a wide range of portable applications.
The bq24180 integrates a synchronous PWM controller, power MOSFETs, input current sensing,
high-accuracy current and voltage regulation, and charge termination, into a small WCSP package.
The charge parameters can be programmed through an I
For details, see the bq24180 data sheet (SLUSA02).
1.3
I/O Description
Jack
J1–DC+
J1–GND
J2–(CSOUT)
J2–BAT– (GND)
J5–SCL
J5–SDA
J5–DC–
J4–Communication Connector
J3–DCOUT
J3–GND
J6–TS
J6–STAT
J6–INT
J6–GND
2
bq24180 Evaluation Module
Description
AC adapter or USB, positive output
AC adapter or USB, Ground
Connect to battery positive terminal
Battery negative terminal, connect to Ground (DC–)
2
I
C clock, connect to SCL pin
2
I
C data, connect to SDA pin
AC adapter or USB, Ground
Connect to 10-pin ribbon cable to USB interface adapter
Switched battery connection
AC adapter or USB, Ground
Connect to external 4.7k NTC thermistor if JMP4 is removed.
External status monitor connection; set JMP3 shunt to EXT
Status indication for host processor
Ground reference connection
Copyright © 2010–2011, Texas Instruments Incorporated
2
C interface
2
C interface.
SLUU419A – April 2010 – Revised April 2011
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