Dear All,
I am looking into design a DC-DC buck power supply with below features. I am trying to implement it with DC-DC buck converter with DAC feedback on FB pin to achieve output adjustment.
1) 15 - 24v DC input
2) Adjustable output from 1V - 14.5V, resolution depends on DAC resolution
3) Continues 4A driving capability, with 6A peak for few seconds
4) Adjustable power up/down slow rate as fast as 100 uS, with 100 uS step size (So that slow rate can be achievable in a wide range For example, 100uS, 200uS, 300uS .... 1mS..20mS.......5S ......10S)
I can use micro-controller to contol DAC to do power margin adjustment. But for fast slow rate, I am not sure which components can achieve this. Is there anybody can recommend me suitable DC-DC converter and DAC can achieve above design spec. Thanks.