During the test on TPS55288-045 EVM, a problem was observed that there is always a leakage on the output when I only applied 20V on VIN of the EVM. My EVM shows around 2-3V voltage on the output by default.
I can set 0x06 to 0x30 to enable the output discharge then it goes 0 as expected, while as long as I set it to 0x20, the voltage rise again.
Is this expected? If not what can be the problem? And if yes, is there any method I can eliminate this?