Hello
I am looking for 100% duty operation where Vin=5 ~20V and Vout=5V/2A.
I found MP8715 seems good for this. I don’t have EVM yet.
I had checked 5Vin/5Vout 2A with DCDC designer, and 100% operation 5Vin/5Vout
seems no problem . please see attached
Do you agree this?
Also I have a question. I saw waveform by DCDC designer and Toff min seems around 36ns.
Would you please let me know the difference of the description " 100% duty cycle" and minimum
toff time?
Anyway, I will check by EVM also.
Thank you and with my best regards
Hi kanji_shibatani,
Thank you for contacting the MPS forum. I had to look into this, but the 100% duty cycle operation of the device means we should see ~5V output in the presence of a 5V input. I believe the minimum off time you see in the switching waveform may be due to limitations of the software itself. A minimum off time is not listed in the datasheet, so I recommend testing this performance out on our evaluation board. It sounds like this was your plan already, did you find the testing successful?
Thanks,
Brendan
Dear Brendan,
Thank you for your answer.
I will buy MP8715 evm.
Thank you again.
