Test Results
6.4.8
Adapter Test (500-mA Load)
•
Connect 5-V ±200 mV adapter on J1 on the PWR520-001 Receiver
•
Adjust load current to 500 mA ±50 mA (J3 “OUT” and J4 “GND”)
•
Verify that:
1. UUT—LED D3 is ON
2. UUT—Vout is 5.0 V to 6 V (J3)
3. Transmitter—Status LED D5 is off
7
Test Results
7.1
Steady State Operation with bq2425x Charger
With the power supply off, connect supply to the PMA transmitter.
•
Set up the test bench as described in
•
Power PMA TX with 18 V or with the PMA power adapter
•
Connect the output of RX to a battery charger (bq24250EVM-150) to charge a battery
•
Set the VBAT to 3.8 V
•
Set the charger current to ~1.2 A
•
Set input current limit from the charger to 1 A
•
Monitor the IOUT and VOUT from the RX after putting the receiver EVM on the transmitter coil and
align them correctly
•
shows the VOUT and IOUT from the RX as the battery charges
Figure 2. bq51221 in Steady State Operation with bq24250EVM
11
SLUUAX6B – February 2014 – Revised June 2014
Dual Mode (WPC and PMA) Integrated Wireless Receiver Power Supply
Copyright © 2014, Texas Instruments Incorporated