Test Setup
12
SLUUBJ2 – October 2016
Copyright © 2016, Texas Instruments Incorporated
bq50002A Wireless Power TX EVM
6.1.8
Software
BQSTUDIO Battery Management Studio Software
.
6.2
Equipment Setup
The following sections describe the steps for setting up the equipment.
6.2.1
PWR607 Input Supply
Set the input supply voltage to 5.0 V and current limit to 2.0 A before connecting to the UUT. Turn power
supply off.
The input power supply positive lead is connected to J1. The power supply return lead is connected to J2
GND.
6.2.2
Oscilloscopes With Current Probe
Connect current probe to measure input current on positive power lead.
6.2.3
HPA764 Load
The load is connected between J3 OUT and J4 GND of the RX. Set the load resistance to 10-k
Ω
or 0 mA.
6.2.4
Jumper Settings
Unit Under Test, PWR607-No jumper installed.
bqTesla Receiver
•
HPA764-JP1
→
EN1 and LOW shorted
•
HPA764-JP2
→
EN2 and LOW shorted
•
HPA764-JP3
→
TS and DIS shorted
•
HAP764-JP6
→
ILIM and FIX shorted
•
HPA764
→
R3 set to 0, full CCW
6.2.5
Meters
Connect ammeter to measure UUT input current from power supply. Connect voltmeter to UUT and
monitor input voltage at J1.
HPA764 connect voltmeter to monitor output voltage at TP7 and voltmeter to measure unregulated voltage
at TP12. HPA764 connect current meter to monitor output current to load.
6.2.6
Connector
A USB mini cable with red (+) and black (–) banana plugs and green/white wires shorted together. Note
red lead will connect to pin 1 and black lead will connect to pin 5. Test cable should be 6- to 12-in long.
6.3
EVM Procedure
6.3.1
Set Input Voltage
Verify that the power supply is adjusted and connected according to
. Verify that the jumper
settings are completed according to
.
6.3.2
Start-Up No Receiver
Do not place any receiver on PWR607 for this test.
Turn on power supply and observe that:
1. Input voltage at J1 is 4.9 V to 5.1 V and current is less than 100 mA with a high-to-low fluctuation or