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Viper222 going shutdown problem

Associate III

Hello everybody,

I was designed a SMPS with Viper222XS for my project. I need to 400ma current for my project. its start with 100mA at soft start and going to 400mA immidiatly after pushhing run button. But I have some problem at here. SMPS was goes to down when current request is going to 400mA. I was build E-Design shema without coil configuration. Because of I could not find 1.2mH coil, so I used to 1mH coil at there. I guess Viper goes to shutdown because of over current protection.

Is there anyway to diable Viper's over current protection. Any else how can I have stable output with this current

Please urgent help