topic S32K344 Power Consumption Estimation Tool - Multiple VDDHV Voltages in S32K

S32K344 Power Consumption Estimation Tool - Multiple VDDHV Voltages

jackhughes — Fri, 17 Apr 2026 17:01:25 GMT

Hi all,

I would like to understand if there is a way to use the S32K Power Estimation Tool in the case where I have 2 different voltages for VDDHV_A and VDDHV_B? They are 5V and 3.3V respectively. In the tool, it only allows you to estimate for VDDHV_A = VDDHV_B.

If this is not possible, is there a way to estimate for this use case?

I've attached a screenshot below. Thanks in advance!

Re: S32K344 Power Consumption Estimation Tool - Multiple VDDHV Voltages

Julián_AragónM — Fri, 17 Apr 2026 21:12:12 GMT

Hi @jackhughes,

As it is right now, the Power Estimation Tool (PET) doesn't have separated measurements for each voltage domain (VDD_HV_A, VDD_HV_B and V15), but for power estimation purposes, it is acceptable to use the 5 V current consumption values even if VDDHV is operated at 3.3 V.

I will ask internal team if there are any values or plans to configure different VDDHV_A & VDDHV_B values in the PET tool.

Best regards,
Julián