�?VNH5019ATR-E】Motor Control IC Technical Question Can you please answer the questions in red and red boxes in the attached schematic?

[KIshi.3]

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[Peter BENSCH]

Welcome, @KIshi.3​ , to the comminity!

I'll just repeat the questions to make them easier to read:

Is it possible that -1.5V is applied to the CPU for all IN, OWM, DIAGx/ENx?

• Yes, in case of negative transients it is possible that -1.5V will be present on all control pins.

Does this countermeasure rely on the parasitic diode protection of the CPU?

• There are parasitic p-n junctions (diodes) at the MCU pins, but they are usually not intended to be used for protection. The protection resistor Rprot on the one hand limits the current for such a negative transient at Vbat and on the other hand protects the controlling MCU from latching-up.

Are there any pull-down resistors in each input port?

• If you mean the input pins of the VNH5019ATR-E: no, there are no pull resistors.

Regars

/Peter