TPS61023: Reverse voltage from Vout to Vin when enabled

Stephen Jones

Part Number: TPS61023

I want a boost converter that takes 3.3V and converts to 300mA@3.6V. It needs to have a low quiescent current of less than 20uA, the load can go as low as 400uA. However when the load has a usb pluged into it the 3.6V output will rise to 5V. Will this feed back into the Vin input (3V3) if it is still enabled, and if so is their anything more appropriate

over 2 years ago

0 Wenhao Wu over 2 years ago

TI__Genius 9046 points

Hi Stephen,

Is there any power supply already in USB which would disturb TPS61023's operation? TPS61023 operates at PSM so reverse current would be block unless there is an external power source producing a negative current through HSFET's bode diode.

-Wenhao

0 Wenhao Wu over 2 years ago in reply to Wenhao Wu

TI__Genius 9046 points

Hi Stephen,

Any feedbacks? I would like to hear something from you. Thank you for your time.

-Wenhao

0 Wenhao Wu over 2 years ago in reply to Wenhao Wu

TI__Genius 9046 points

Hi Stephen,

Since no response from you, I will close this thread. If there is further questions, you are welcome to issue another thread on E2E. Thank you for your notice.

-Wenhao

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TPS61023: Reverse voltage from Vout to Vin when enabled