Test Results
7
Test Results
7.1
Steady-State Operation with bq2425x Charger
With the power supply off, connect the supply to the bqTESLA transmitter.
•
Set up the test bench as described in
•
Power TX with 19 V.
•
Connect the output of RX to a battery charger (bq24250) to charge a battery.
•
Set the VBAT to 3.8 V.
•
Set the charger current to 1.2 A.
•
Set input current limit on the charger to 1 A.
•
Monitor the I
OUT
and V
OUT
from the RX after putting the receiver EVM on the transmitter coil and align
them correctly.
•
shows the V
OUT
and I
OUT
from the RX as the battery charges.
Figure 2. bq51020 in Steady State Operation with bq24250
11
SLUUB03 – April 2014
bq51020EVM (5-W WPC) Integrated Wireless Receiver Power Supply
Copyright © 2014, Texas Instruments Incorporated