Test Procedure
6
Test Procedure
This procedure describes test configuration of the bq51221EVM-520 evaluation board (PWR520-001) for
bench evaluation.
6.1
Definition
The following naming conventions are used:
VXXX :
External voltage supply name (VAD, VOUT, VTS)
LOADW:
External load name (LOADR, LOADI)
V(TPyy):
Voltage at internal test point TPyy. For example, V(TP02) means the voltage at TP02.
V(Jxx):
Voltage at header Jxx
V(TP(XXX)):
Voltage at test point XXX. For example, V(ACDET) means the voltage at the test point which
is marked as ACDET.
V(XXX, YYY):
Voltage across point XXX and YYY.
I(JXX(YYY)):
Current going out from the YYY terminal of header XX.
Jxx(BBB):
Terminal or pin BBB of header xx.
JPx ON :
Internal jumper Jxx terminals are shorted.
JPx OFF:
Internal jumper Jxx terminals are open.
JPx (-YY-) ON:
Internal jumper Jxx adjacent terminals marked as YY are shorted.
Assembly drawings have location for jumpers, test points, and individual components.
6.2
Recommended Test Equipment
The following equipment is needed to complete this test procedure:
Power Supplies
Power Supply #1 (PS #1) capable of supplying 19 V at 1 A is required power plug to supply the PMA
transmitter (An adapter usually included on the PMA TX module).
Loads
A resistive load or electronic load that can be set to 5
Ω
/1000 mA, 10
Ω
/500 mA, and 5 k
Ω
/1 mA power
rating should be 5 W.
Meters
Two DC voltmeters and two DC ammeters are required.
Oscilloscopes
Not required.
bqTesla Transmitter and PMA Transmitter
•
The transmitter HPA689 or equivalent will be used to test WPC mode
•
PMA to test PMA mode (Duracell Powermat for 2 Devices “PMA compatible”—M2PB1)
•
For proper operation, 22-AWG wire is recommended
6.3
Equipment Setup
6.3.1
Test Set Up
•
The final assembly will be tested using a bqTesla transmitter (HPA689). Input voltage to the transmitter
is set to 19 VDC ±200 mV with current limit of 1.0 A.
•
Connect power supply to J1 and J2 of transmitter, HPA689
•
Set power supply to OFF
•
Place Unit Under Test (UUT) on transmitter coil
8
Dual Mode (WPC and PMA) Integrated Wireless Receiver Power Supply
SLUUAX6B – February 2014 – Revised June 2014
Copyright © 2014, Texas Instruments Incorporated