Other NXP ProductsのトピックRe: MC33774 internal overcurrent data

MC33774 internal overcurrent data

Louis1916 — Wed, 06 Nov 2024 03:56:37 GMT

The customer wants to know what is the maximum overcurrent of the MC33774 VDDC and GPIO internal protection tubes? The data sheet did not find any relevant information.Thanks！

Re: MC33774 internal overcurrent data

JozefKozon — Thu, 07 Nov 2024 12:33:06 GMT

Dear Louis,

please see below an answer from an application engineer I have contacted.

DESCRIPTION

The MC33774 VDDC current limitation is given by the Vtrig(VDDC)oc parameter and the Rsense resistor. Above 264mV in the sense resistor can trigger an OC event.

What do you mean by GPIO internal protection tubes ?

With Best Regards,

Jozef

Re: MC33774 internal overcurrent data

Louis1916 — Wed, 13 Nov 2024 10:13:44 GMT

Dear Jozef

I mean that in addition to the power pin, the internal protection of the other ordinary IO ports can be too current? Thanks!

Re: MC33774 internal overcurrent data

JozefKozon — Wed, 13 Nov 2024 11:15:11 GMT

Dear Louis,

unfortunately we do not have this value. The GPIO pins are suppose to be supplied from VDDC or VAUX, depending which regulator is assigned. The maximum current capabilities can be found in the MC33774A full datasheet, but both VDDA and VAUX also supply other circuits, so these are also not relevant values.

I apologize for inconvenience.

With Best Regards,

Jozef