My customer is checking TPS62821EVM-005 behavior and has a question about Power Off behavior. The customer connected EVM with the only load at output and DC supply at input. He did not modify the circuit in EVM.
Then, under high load condition of Iout=90%, Vout went down once and then rose again when the input power was turned off as shown in the following attachment.
Is this behavior normal? If yes, would you please tell me why TPS62821 operate like this?
Your advise is appreciated.