Test Procedure
•
UUT will be placed in the center of HPA689 TX coil. Other bqTesla transmitter base units are also
acceptable for this test (Just make sure to apply the right input voltage).
•
A PMA (Duracell Powermat TX) transmitter is needed to test the PMA compliance
6.3.2
Load
•
The load is connected between J3-OUT and J4-GND of the UUT
•
A DC ammeter is connected between UUT and Load
•
Set the load for 5
Ω
/1000 mA
6.3.3
Jumper Settings
JP1
→
ILIM and FIX are shorted
JP2
→
CM_ILIM and high are shorted
6.3.4
Voltage and Current Meters
Connect ammeter to measure 19-V input current to transmitter. Connect voltmeter to monitor input voltage
at J1 and J2 of TX unit. On UUT a voltmeter is used to measure output voltage at J3 with ground at J4.
Connect ammeter to measure load current.
6.3.5
RFOD : R6 Set Up
Connect an ohmmeter between TP5 (FOD) and J4 (GND). Adjust R6 to 480 ohm reading on the
ohmmeter.
6.4
Procedure
6.4.1
Turn ON Operation and Operation at 1000-mA Load
•
Turn ON Transmitter power supply (19 V)
•
Transmitter—Verify LED D2 is “ON”
•
UUT—Adjust load current to 1000 mA ±50 mA
•
Put the receiver EVM on the Transmitter coil and align them correctly
•
After 5 seconds verify that:
•
Transmitter—Status LED D5 should be green flashing ~ 1 sec
•
You should hear a beep from the transmitter
•
Transmitter—LED D2 still ON
•
Receiver—LED D1 is ON
•
UUT—Verify that Vout is 4.9 V to 5.1 V ( Between J3 and J4)
•
UUT—Verify that rectified voltage should be 5 V to 5.4 V (between TP3 and GND) (note: a modulation
signal is present on this voltage every 250 ms and may cause fluctuation in the reading use lower
value or base line)
6.4.2
Efficiency Test (1000-mA Load)
•
Verify that input current to TX is less than 500 mA with input voltage at 19 VDC
•
Turn OFF Transmitter Power Supply (19 V)
6.4.3
Turn ON Operation and Operation at 500-mA Load
•
Turn ON Transmitter power supply (19 V)
•
Transmitter—Verify LED D2 is “ON”
•
UUT—Adjust load current to 500 mA ±50 mA
•
Put the receiver EVM on the Transmitter coil and align them correctly
9
SLUUAX6B – February 2014 – Revised June 2014
Dual Mode (WPC and PMA) Integrated Wireless Receiver Power Supply
Copyright © 2014, Texas Instruments Incorporated