Action of S12ZVM High-Side Driver

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Action of S12ZVM High-Side Driver

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ikkishingu
Contributor II

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?

19671_19671.pngS12ZVM_HSFET_Driver.png

 

Best Regards,

Ikki

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DPB
NXP Employee
NXP Employee

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

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DPB
NXP Employee
NXP Employee

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

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ikkishingu
Contributor II

Dear DPB-san,

Thank you for your info.

It makes sense to me!

Ikki

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