Texas Instruments Evaluation Module for BQ25050 1A, Single-Input, Single Cell Li-Ion Battery Charger with 50-mA LDO BQ25 BQ25050EVM Scheda Tecnica
Codici prodotto
BQ25050EVM
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
LDO load: 1-k
Ω
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
.
The original test setup of HPA577-002 is shown in
.
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-k
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-k
Ω
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
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
9. Connect a voltage meter across J3 (BAT, GND).
10. Verify the shunts are placed correctly as per
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
The USB Interface Adapter software is available in the product folder at
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
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
4
bq25050/bq25060EVM
SLUU438 – July 2010
Copyright © 2010, Texas Instruments Incorporated