TLV3603: TLV3603 support

Allen

Thanks for your post on E2E.  I am a little confused how this circuit will work since you mention AC_IN (assume you meant AC_VIN) is not fixed (range of 5.6 to 19).  If you don't have a fixed reference to compare against, how will you monitor when IN+ is above 0.4V?  Seems better to divide down the VCC voltage to create your reference.  Sorry if I am not understanding clearly.  

Chuck

Hi Chuck SIns,

  Thanks for your prompt feedback.

  The max voltage of VIN- is 19/61 = 0.311V;it means that OUT will be output high if VIN- >=0.4V.is that correct?

Please feel free to correct me if there is anything incorrect.

Thanks

Allen

I mean VIN+ >=0.4V, sorry for the confusion.

Hi Allen,

Thanks for the follow up. Yes, if AC_VIN is 19V, then the voltage seen at VIN- would be 0.311V so VIN+ would need to be greater than 0.311V to toggle it high.

However, you mention AC_VIN could be 5.6V, which would be 0.0819V at VIN-, so VIN+ would only need to be greater than 0.0819V to toggle it high. 

Whats the expected voltage for SHORT_DET1 or SHORT_DET2? or rather VIN+? Can it be other voltages besides 0.4V?

As Chuck mentioned, it might be easier to use a fixed reference such as your AC_DC_5V2 and divide it down instead of using AC_VIN.

Hi Chuck,

Sorry to reply late and thanks for your great support.

YES,it has been fixed.

Thanks again.

Allen