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RT1050: DCDC_PSWITCH delay

Question asked by Jess Grinsted on Aug 15, 2018
Latest reply on Aug 16, 2018 by jamesbone

In all the documentation made available for the RT1050, nowhere can a specification for the pin: DCDC_PSWITCH be found.

In order to calculate a delay filter for the pin to meet the criteria at least 1ms, a trigger level for the pin is needed.

It is in the DCDC_IN domain, but a specification for this domain seems unavailable.

Is it reasonable to assume it is 0.7*VCC?

 

From ref design:

VCC=3.3V

V-PSWITCH=0.7*3.3V

R=30K

C=220nF

Tau=7.95ms

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