Texas Instruments Evaluation Module for BQ24630 Multi Cell Synchronous Switch-Mode Charger BQ24630EVM BQ24630EVM 데이터 시트

제품 코드

BQ24630EVM

Test Summary

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2.4

Procedure

2.4.1

AC Adapter Detection Threshold

1. Make sure EQUIPMENT SETUP steps are followed. Turn on PS#2.
2. Turn on PS#1

Measure

→

V(J5(SYS)) = 0 ± 500mV

Measure

→

V(TP(VREF)) = 0V ± 1000mV

Measure

→

V(TP(REGN)) = 0V ± 500mV

3. Increase the output voltage on PS#1 until D5 (PG) on but do not exceed 5V. Set the power supply #2

to 1.8V ± 100mVDC
Measure

→

V(J1(VIN)) = 4.5V ± 0.5V

Measure

→

V(J5(SYS)) = 4.5V ± 0.5V

Measure

→

V(TP(VREF)) = 3.3V ± 200mV

Measure

→

V(TP(REGN)) = 0V ± 500mV

Measure

→

D4 (/ACDRV) on, D5 (PG) on

2.4.2

Charger Regulation Voltage

1. Increase the voltage of PS#1 until V(J1(VIN)) = 24V ± 0.1V.

Measure

→

V(J5(BAT, GND)) = 0V ± 1V

2. Put JP5 on (Enable the charging).

Observe

→

D3 (CE) on.

Measure

→

Peak V(J5(BAT)) = 21.0V ± 1V (bq2461x)

Measure

→

Peak V(J5(BAT)) = 18.0V ± 1V (bq2463x)

Measure

→

V(TP(REGN)) = 6V ± 500mV

2.4.3

Charge Current and AC Current Regultion (DPM)

1. Take off JP5 (Disable the charging).
2. Connect the Load #2 in series with a current meter (multimeter) to J5 (BAT, GND). Make sure a

voltage meter is connected across J5 (BAT, GND). Turn on the Load #2. Set the output voltage to 12V
(bq2461x) or 2V (bq2463x).

3. Connect the output of the Load #1 in series with a current meter (multimeter) to J5 (SYS, GND). Make

sure a voltage meter is connected across J5 (SYS, GND). Turn on the power of the Load #1. Set the
load current to 3.0A ± 50mA but disable the load #1. The setup is now like

Figure 1

for HPA422. Make

sure Ibat = 0A ± 10mA and Isys = 0A ± 10mA.

4. Put JP5 on (Enable the charging).

Observe

→

D3 (CE) on

Measure

→

Ibat = 300mA ± 200mA (bq2461x)

Measure

→

Ibat = 125mA ± 60mA (bq2463x)

Observe

→

D7 (STAT1) on; D8 (STAT2) off.

5. Set the Load #2 output voltage to 16.5V.

Measure

→

Ibat = 3000mA ± 300mA

Observe

→

D7 (STAT1) on; D8 (STAT2) off.

6. Enable the output of the Load #1

Measure

→

Isys = 3000mA ± 200mA, Ibat = 1400mA ± 500mA, Iin = 4000mA ± 500mA

7. Turn off the Load #1.

Measure

→

Isys = 0 ± 100mA, Ibat = 3000mA ± 300mA.

8. Increase the Load #2 output voltage from 16.5V to 22V (61x) or 19V (63x).

Measure

→

Isys = 0 ± 100mA, Ibat = 0mA ± 100mA.

Observe

→

D7 (STAT1) off; D8 (STAT2) on.

9. Decrease the Load #2 output voltage back to 16.5V.

Observe

→

D7 (STAT1) on; D8 (STAT2) off.

bq2461x/bq2463x EVM (HPA422) Multi-Cell Synchronous Switch-Mode Charger

SLUU396A – January 2010 – Revised July 2010