bq51025 I
OUT
bq51025 V
OUT
bq24261 I
OUT
(Battery)
bq24261 V
OUT
(Battery)
bq51025 P
OUT
(7 V * 1.4 A) ~10 W
bq24261 P
OUT
(4 V * 2.1 A) ~8.4 W
Test Results
7
Test Results
7.1
Steady-State Operation with the bq24261 Charger
With the power supply off, connect the supply to the bqTESLA transmitter.
•
Set up the test bench as described in
•
Power the TX (PWR648) with 12 V
•
Connect the output of the RX (PWR649) to battery charger bq24261EVM-079
•
Using a source meter, set the VBAT to 3.5 V and the current limit to 3.5 A
•
Using the bq24261 GUI, set the charger current to 2.1 A and the current limit to 2.5 A
•
Monitor the I
OUT
and V
OUT
from the RX after putting the receiver EVM (PWR649) on the transmitter coil
and aligning them correctly
•
Monitor the I
OUT
and V
OUT
from the bq24261
•
shows the V
OUT
and I
OUT
from both the RX and the bq24261EVM-079. The output power from
the bq51025 is approximately 10 W while the output power from the bq24261 is approximately 8.4 W.
Figure 3. bq51025 in Steady State Operation with bq24261
14
bq51025 Evaluation Module (PWR649)
SLUUB55 – September 2014
Copyright © 2014, Texas Instruments Incorporated