Datasheet

Equipment

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2 Equipment

2.1 Power Supplies

Power Supply 1 (PS#1): Adjustable from 0 to ≥ 5.1 Vdc at ≥ 1.5 A, use for input J1.

Power Supply 2 (PS#2): Adjustable from 0 to ≥ 5.1 Vdc at ≥ 2.5 A, used for Battery Load board.

2.2 Loads

Load #1: 25 Ω ±5%, ≥5 W.

Load #2: PR1010: Battery Load Circuit board, as shown in Figure 4.

LDO load: 1-kΩ resistor, 200 mW

2.3 Meters

Five Fluke 75 DMMs (equivalent or better).

2.4 Computer and Interface

A computer with at least one USB port.

HPA172, for -001 only.

3 Equipment Setup

The original test setup of HPA577-001 is shown in Figure 1.

The original test setup of HPA577-002 is shown in Figure 2.

1. Set the power supply #1 for 5.1 V ± 100 mVdc, 1.5 ±0.1-A current limit and then turn off supply.

2. Connect the output of power supply #1 in series with a current meter (multimeter) to J1 (VIN, GND).

3. Connect a voltage meter across J1 (VIN, GND).

4. Apply a 1-kΩ load resistor across J4 (VLDO, GND).

5. Connect Load #1 to J2 (OUT, GND).

6. Connect the Battery Load Circuit board to J3 (BAT, GND).

7. Set PS#2 to 2.3 Vdc ±100 mV and 2.5-A current limit, turn off and connect to the Battery Load Circuit

board.

8. Connect a voltage meter across J2 (OUT, GND).

9. Connect a voltage meter across J3 (BAT, GND).

10. Verify the shunts are placed correctly as per Table 2.

11. For HPA577-001 (bq25050 EVM) only:

Connect J5 to a computer with a USB Interface Adapter (HPA172).

The USB Interface Adapter software is available in the product folder at www.ti.com by searching for

the part number bq25050 and selecting the bq25050EVM link. A zip file under the Software and Tools

section can be downloaded. Extract the files onto the local hard drive, and double-click on the

bq25050.exe application evaluation file. A screen shot is shown in Figure 1.

bq25050/bq25060EVM SLUU438–July 2010