Texas Instruments BQ24316EVM - BQ24316 Evaluation Module for Li+ Charger and Front End Protection IC BQ24316EVM BQ24316EVM Scheda Tecnica
Codici prodotto
BQ24316EVM
1.2
General Description
1.3
I/O Description
1.4
Controls and Key Parameters Setting
1.5
Recommended Operating Conditions
Introduction
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The bq2430x/1x/8x evaluation module is a complete charger module for evaluating a charger front-end
protection and charger solution using the bq2430x/1x/8x and bq24080 devices. It is designed to deliver up
to 200 mA (bq2430x) or 700 mA (bq2431x/8x) of charge current to Li-ion or Li-polymer applications. The
charger front-end protection current is designed to 300 mA (bq2430x) or 1000 mA (bq2431x) or no limit
(bq2438x).
protection and charger solution using the bq2430x/1x/8x and bq24080 devices. It is designed to deliver up
to 200 mA (bq2430x) or 700 mA (bq2431x/8x) of charge current to Li-ion or Li-polymer applications. The
charger front-end protection current is designed to 300 mA (bq2430x) or 1000 mA (bq2431x) or no limit
(bq2438x).
The bq2430x/1x8x protects the charging system against three types of failures: input overvoltage when
the AC adapter fails to regulate its voltage; load overcurrent when failures such as a short-circuit occurs in
the charging system; and battery overcharge.
the AC adapter fails to regulate its voltage; load overcurrent when failures such as a short-circuit occurs in
the charging system; and battery overcharge.
In addition, bq2430x provide a PFET gate drive signal to an external PFET for input reverse-polarity
protection.
protection.
For details, see the relevant bq2430x/1x/8x data sheet.
Jack
Description
J1-DC+
AC adapter, positive output
J1-DC–
AC adapter, negative output, ground
J2-OUT
CFE OUT pin
J2-DC–
CFE VSS pin, ground
J2-BAT+
Connect to battery positive output
J2-FAULT
CFE FAULT pin
J3-CHGIN
bq24080 IN pin, connect to external power supply positive output
J3-DC–
bq24080 VSS pin, ground
J4-BAT+
Connect to battery positive output
J4-BAT–
Connect to battery negative output, ground
Jack
Description
Factory Setting
JMP1
CFE input voltage is indicated by LED.
Jumper On
JMP2
CFE output voltage is indicated by LED.
Jumper On
JMP3
CFE CE pin is connected to 5 V.
Jumper On
JMP4
bq24080 STAT1 pin is indicated by LED.
Jumper On
JMP5
bq24080 STAT2 pin is indicated by LED.
Jumper On
JMP6
bq24080 PG pin is indicated by LED
Jumper On
JMP7
bq24080 CE pin is connected to 5 V.
Jumper On
JMP8
CFE OUT pin is connected to bq24080 IN pin.
Jumper Off
Symbol
Description
Min
Typ
Max
Unit
Notes
Supply voltage, V
IN
Input voltage from ac adapter input
4.5
5
26
V
Battery voltage, V
BAT
Voltage applied at VBAT terminal of J4
0
3-4.2
5
V
Supply current, I
AC
Maximum input current from ac adapter
0
1.5
A
input
Charge current, I
chrg
Battery charge current
0.02–0.07 0.2–0.7
1
A
Operating junction
0
125
°
C
temperature range, T
J
bq2430x/1x/8x DSG EVM (HPA245) for Li+ Charger Front-End Protection IC
2
SLUU291A – August 2007 – Revised April 2008