Test Procedure
2.2.1Equipment
1)Power source:
2)Two Fluke 75, equivalent or better
3)Oscilloscope – TDS220 or better
4)Load test board (See Figure
Figure 2–1. Load Test Board
Power Supply | UUT | DMM | S4 | S1 | S2 |
|
| |
5.1 V ± | 0.1 V |
|
| |||||
Volts |
|
|
|
|
| |||
Current Limit | bq24010/2 EVM |
|
|
|
|
| ||
|
|
|
|
|
| |||
|
|
|
|
|
|
| ||
1 A ± | 0.1 A | BAT+ | BAT+ |
|
|
|
|
|
|
|
|
| R4 |
| |||
| + DMM | DC+ |
| C1 |
|
| ||
|
|
| 66.5 | Ω | ||||
|
|
|
| 2000 µ F |
| |||
| – | DC– |
|
| 0.25 W | |||
| BAT– | 25 V |
| |||||
|
| BAT– |
|
|
|
| ||
|
|
| R3 |
|
|
| ||
|
|
|
|
| 8 7 | 6 | 5 | |
|
|
|
|
| 3 kΩ | |||
|
|
|
|
| 0.25 W |
|
|
|
|
|
|
|
|
|
| 4 |
|
|
|
|
|
| R6 | 3 | 2 | 1 |
|
|
|
|
| 10 kΩ | |||
|
|
|
|
|
|
|
| |
|
|
|
|
| 0.25 W |
|
|
|
| S3 |
|
|
|
R5 | D1 |
|
|
|
1N4148 |
|
| ||
66.5 Ω |
|
| ||
|
|
|
| |
0.25 W |
|
|
|
|
| 8 | 7 | 6 | 5 |
Q1
Si4410DY
|
| 4 |
| |
R7 | 3 | 2 | 1 | |
10 kΩ | ||||
|
|
| ||
0.25 W |
|
|
|
R1
5Ω
5W
Q2
Si4410DY
2.2.2Equipment Setup
1)Connect the load board to the BAT+ and
2)Connect a voltage meter to the BAT+/BAT– output to monitor the output voltage (Range is 0 to 5 V).
3)Set the lab supply for 5.1 V ± 0.1VDC, 1.0 ± 0.1 A current limit and then turn off supply. Connect the source supply to a current meter and to J1, noting polarity. (You may use an internal source current meter if it has 5% or better accuracy.)
4)Install shunt jumpers on the LED pins 1 and 2 of each header J4, J5, and J6.
5)Connect the scope to the output, BAT+.
2.2.3Procedure
1)Ensure that equipment setup steps are followed. (Switches should be in the closed position, shunts installed, and power source set to
2)Verify that output voltage BAT+ charges up to between 2.5 V and 2.9 V, and the red LED (D1) and green LED (D3) are lit.
3)Open switch SW2, and then close switch SW2.
