Hi Raj

 Thanks for your question. Can you please share the input voltage being applied and the type of load used (CR or CC mode). 

Is it possible to share Primary Drain-Source voltage, BPP, BPS and Vout voltage waveforms for the Startup condition where you are experiencing the issue?

Regards

PI-Radiant

Hello, 

Thanks for the response.

Actually I was testing the board in 'Constant Power Mode' (CP). Here while powering on load it gives 0V output.

Also, while powering it in CC and CR mode it works fine for all the load as expected.

Could you provide the reason behind this behavior of board? Why the function is different for different  mode of loading?

Regards,

Hi Raj

 This is most likely due to the dynamics of the CP mode of E-load used. During Startup, when Vout starts building up, initially from 0V, the E-load would try to draw constant power (=Vout*Iload). As Vout is low during startup, current drawn is likely to be huge to maintain constant power. So, this might be leading to the behavior you had reported.

Regards

PI-Radiant

Understood, Thanks for the explanation.