11 Power Supply Recommendations

The TPA2015D1 is designed to operate from an input voltage supply range between 2.5-V and 5.2-V. Therefore

the output voltage range of the power supply should be within this range. The current capability of upper power

should not exceed the maximum current limit of the power switch.

11.1 Power Supply Decoupling Capacitors

The TPA2015D1 requires adequate power supply decoupling to ensure a high efficiency operation with low total

harmonic distortion (THD). Place a low equivalent-series-resistance (ESR) ceramic capacitor, typically 0.1 µF,

within 2 mm of the PVDD/PVOUT pin. This choice of capacitor and placement helps with higher frequency

transients, spikes, or digital hash on the line. In addition to the 0.1 μF ceramic capacitor, is recommended to

place a 2.2 µF to 10 µF capacitor on the VDD supply trace. This larger capacitor acts as a charge reservoir,

providing energy faster than the board supply, thus helping to prevent any droop in the supply voltage.

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TPA2015D1

SLOS638C – NOVEMBER 2011 – REVISED JUNE 2022

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Product Folder Links: TPA2015D1