topic Re: Action of S12ZVM High-Side Driver in S12 / MagniV Microcontrollers

Action of S12ZVM High-Side Driver

ikkishingu — Mon, 09 Feb 2015 11:42:07 GMT

Dear person in charge,

Hello,

Could I ask a question for just clarification?

This is the schematic circuit of GDU HSFET driver on S12ZVM.

Question 1:

After this driver turns off, "Driver off" Transistors(T3&T4) turn on to discharge the external FET.

Is my understand("Driver off" Tr action & the purpose of the Tr) correct?

Question 2:

Gate driving speed of "Driver off" is adjustable like a slew rate control?

Best Regards,

Ikki

DPB — Mon, 16 Feb 2015 11:28:51 GMT

Hello Ikki

To question (1). Yes, T3 and T4 turn on to switch off the external FET.

To question (2). No, the driver off is not adjustable like a slew rate control.

The driver on slew rate can be adjusted, the driver off is fixed and specified as tHGOFF in the electrical parameter section.

Regards

DPB

ikkishingu — Tue, 17 Feb 2015 12:07:24 GMT

Dear DPB-san,

Thank you for your info.

It makes sense to me!

Ikki