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TPS66020, TPS66021

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SLVSEW8 – AUGUST 2019

Product Folder Links: TPS66020 TPS66021

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10 Power Supply Recommendations

The device has a single input supply, VIN. VIN may be shared with PP5V when using the TPS66021 device.

When shared with PP5V, the capacitance required on PP5V is sufficient for the VIN supply. When VIN is not

shared, a 1-uF or higher ceramic bypass capacitor between VIN and GND is recommended as close to the VIN

as possible for local noise decoupling.

USB Specification Revisions 2.0 and 3.1 require VBUS voltage at the connector to be between 4.75 V to 5.5 V.

Depending on layout and routing from supply to the connector the voltage droop on VBUS has to be tightly

controlled. Locate the input supply close to the device. For all applications, a maximum 10-μF ceramic bypass

capacitor between VBUS and GND is recommended as close to the Type-C connector of the device as possible

for local noise decoupling. The input power supply should be rated higher than the current limit set to avoid

voltage droops during overcurrent and short-circuit conditions.