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Test Results
7.6
Thermal Performance
This section shows a thermal image of the bq51221EVM-520 in both WPC and PMA. A 1-A load is used
and output voltage is set to 5 V. There is no air flow and the ambient temperature is 25°C. The peak
temperature of the IC (39°C in WPC and 37°C in PMA) is well below the maximum recommended
operating condition listed in the data sheet.
Figure 8. Thermal Image in WPC Transmitter (1000-mA Load)
Figure 9. Thermal Image in PMA Transmitter (1000-mA Load)
16
Dual Mode (WPC and PMA) Integrated Wireless Receiver Power Supply
SLUUAX6B – February 2014 – Revised June 2014
Copyright © 2014, Texas Instruments Incorporated