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
2
C interface
•
Input operating range 4-V to 9.5-V normal operation and 9.5-V to 16-V limited operation
•
Switched battery power, DCOUT
•
LED indication for status signals
•
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
2
C interface.
For details, see the bq24180 data sheet (
1.3
I/O Description
Jack
Description
J1
–
DC+
AC adapter or USB, positive output
J1
–
GND
AC adapter or USB, Ground
J2
–
(CSOUT)
Connect to battery positive terminal
J2
–
BAT
–
(GND)
Battery negative terminal, connect to Ground (DC
–
)
J5
–
SCL
I
2
C clock, connect to SCL pin
J5
–
SDA
I
2
C data, connect to SDA pin
J5
–
DC
–
AC adapter or USB, Ground
J4
–
Communication Connector
Connect to 10-pin ribbon cable to USB interface adapter
J3
–
DCOUT
Switched battery connection
J3
–
GND
AC adapter or USB, Ground
J6
–
TS
Connect to external 4.7k NTC thermistor if JMP4 is removed.
J6
–
STAT
External status monitor connection; set JMP3 shunt to EXT
J6
–
INT
Status indication for host processor
J6
–
GND
Ground reference connection
2
bq24180 Evaluation Module
SLUU419A
–
April 2010
–
Revised April 2011
Copyright
©
2010
–
2011, Texas Instruments Incorporated
