Hi expert,
Customer used TPS53355 and see Vo has about 0.75V before turn on. Do you have any idea what might happened and how to prevent it?
Power on
Power off
Off state
Regards,
Allan
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Hello Allan,
during the shutdown, I see the VOUT goes to zero then comes back up again. It looks like something else is pre biasing the output of the device. is there upstream rail that is feeding VOUT?
Thanks
Tahar