topic Re: Power up Ramp in Power Management

Power up Ramp

bettinawyss — Mon, 16 Nov 2020 13:15:44 GMT

Hi,

I would like to use PF8200 together with PolarFire FPGA in a project. However, I noticed that the power ramp up times are slightly outside the specifications of PolarFire (200us). Is there a way to somehow get longer ramp up times?

Thank you in advance

Betty

Re: Power up Ramp

guoweisun — Tue, 17 Nov 2020 13:05:44 GMT

Do you mean the start up time?do you need longer than 200us of PMIC?

Re: Power up Ramp

bettinawyss — Tue, 17 Nov 2020 13:16:18 GMT

Yes exactly. E.g: the start up ramp of the voltage regulator output should take at least 200us to go from 0 to 1V.

Re: Power up Ramp

guoweisun — Tue, 17 Nov 2020 14:31:28 GMT

For the slew rate time which can't modify for the output regulators.