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2.4.2 CFE Input Overvoltage Protection

2.4.3 CFE Load Overcurrent Protection

2.4.4 CFE Battery Overvoltage Protection

2.4.5 Charge IC Test Setup

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Test Summary

Measure → V(J2(OUT)) = 0 V ± 500 mV

Observe → D2 on, D3 off.

6. Uninstall JMP3 (enable U1).

Measure → V(J2(OUT)) = 5.5 V ± 200 mV (For HPA245-001, -002, -009 only)

Measure → V(J2(OUT)) = 4.5 V ± 200 mV (For HPA245-003 only)

Measure → V(J2(OUT)) = 5 V ± 200 mV (For HPA245-004, -005, -006, -007, -008, -010, -011, 012,

-013 only)

Observe → D2 on, D3 on.

1. (For HPA245-001, -002, -003, -004, -013 only) Increase the voltage of PS#1 to 11V ± 0.1V

Measure → V(J2(OUT)) = 0 V ± 500 mV

Observe → D2 on, D3 off.

2. (For HPA245-005, -006, -007, -008, -009, -010, -011, -012 only) Increase the voltage of PS#1 to 8 V

± 0.1 V.

Measure → V(J2(OUT)) = 0 V ± 500 mV

Observe → D2 on, D3 off.

3. Decrease the voltage of PS#1 to 5 V ± 0.1 V.

Observe → D2 on, D3 on

1. (For HPA245-009, -010, skip 2.4.3 test and go to 2.4.4 test.)

2. Enable the output of the Load #1.

Observe → D2 on, D3 on.

3. (For HPA245-001, -002, -003, -004, -013 only) Increase the current of Load #1 to 0.5A ± 0.1A

Observe → D2 on, D3 off.

4. (For HPA245-005, -006, -007, -008, -011, -012 only) Increase the current of Load #1 to 1.2 A ± 0.1 A.

Observe → D2 on, D3 off.

5. Turn off Load #1.

6. Decrease the voltage of PS#1 to 0 V ± 0.1 V.

1. Increase the output voltage of PS#1 to 5 V ± 0.1V.

Observe → D2 on, D3 on

2. Increase the voltage of PS #2 to 4.6 V ± 0.1V.

Observe → D2 on, D3 off.

3. Decrease the voltage of PS #2 to 3.7 V ± 0.1V.

Observe → D2 on, D3 on.

4. Turn off all the power supplies and loads. Remove all connection between test board and power

supplies or loads.

1. Set the power supply #1 for 0 V ± 100 mVDC, 2-A ± 0.1-A current limit and then disable the output.

2. Connect the output of power supply #1 to J3 (CHG IN, DC–).

3. Connect a voltage meter across J3 (CHG IN, DC–).

4. Set the voltage of Load #2 to 3.6 V ± 0.1 V, disable output of Load #2.

5. Connect output of the Load #2 in series with a current meter (multimeter) to J4 (BAT+, BAT–). Ensure

that a voltage meter is connected across J4 (BAT+, BAT–).

SLUU291A – August 2007 – Revised April 2008 bq2430x/1x/8x DSG EVM (HPA245) for Li+ Charger Front-End Protection IC 5

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