Texas Instruments Evaluation Module for BQ24155 Fully Integrated Switch-Mode One-Cell Li-Ion Charger BQ24155EVM BQ24155EVM 데이터 시트

제품 코드

BQ24155EVM

Test Summary

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Figure 3. Main Window of the bq2415x Evaluation Software

2.4

Procedure

2.4.1

Charge Voltage and Current Regulation

1. Ensure that

Section 2.3

steps are followed. Turn on PS1.

2. Software setup: Click Immediate Update Disabled button. It changes to Immediate Update Enabled.

Check Auto Reset Enable, set Rate to 5 seconds. Check Periodic Updates, set Rate to 1 second.
Ensure that Operation Mode is Charger Mode. Uncheck Charge Current Termination. Check STAT
Pin. Select Battery Regulation Voltage to 4.20V.
Measure

→

V(J2(VBAT+, VBAT–)) = 4.2 ±100 mV

Observe

→

D1 is on.

3. Enable Load 2.

Measure

→

V(J2(VBAT+, VBAT–)) = 2.5 ±100 mV

Measure

→

Ichrg = 160 mA ±40 mA

Measure

→

Iin = 93 mA ±5 mA

4. Select Charge Current to 1.25 A, select Input Current Limit to 500 mA.

Measure

→

Ichrg = 750 mA ±100 mA

Measure

→

Iin = 475 mA ±25 mA

5. Check Disable Charger. Turn off PS1, turn off Load 2, and disconnect

2.4.2

Boost Function (For –001, –002, –003, –004, –007 ONLY)

1. Adjust PS1 output to 3.7 V and disable the output. Connect the PS1 in series with a current meter

(multimeter) to J2 (BAT+, BAT-). Ensure that a voltage meter is connected across J2 (BAT+, BAT-).

2. Set the Load 1 current to 200 mA ±20 mA but disable the output. Connect the output of the Load 1 in

series with a current meter (multimeter) to J1 (DC+, DC-). Ensure that a voltage meter is connected
across J1 (DC+, DC-). The setup is now like that shown in

Figure 4

for HPA255.

bq2415x RGY EVM (HPA255)

SLUU366A – March 2010 – Revised April 2010

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