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yere_4321266
Level 1
Level 1
First like received Welcome! First question asked

I can't see how the external MOSFETS over current is protected.

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1 Solution
RupakC
Moderator
Moderator
Moderator
100 solutions authored 250 sign-ins 25 likes received

Hello @yere_4321266 

The TLE9180 has a Short Circuit Detection (SCD) feature:

The external FETs controlled by the driver IC are supervised for short circuit. The short circuit detection SCD measures the drain source voltage of the external MOSFETs by detecting the voltage difference VDHxVDHP-SHx and SHx-SLx compared to the programmed voltage level. The short circuit detection can be configured in a wide range. The threshold levels, the filter-,blanking times and the failure behavior are adjustable. Two additional failure behaviors can also be adjusted. Short circuit will not be detected if a duty cycle range at the external FET is applied which is shorter than the SCD filter and the SCD blanking time. Short circuit detection is operational as long as no under voltage of the high-side buffer capacitors is detected. 

RupakC_0-1702980104219.png

 

If you need any other assistance, do let me know. 

Regards

 

RupakC

View solution in original post

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1 Reply
RupakC
Moderator
Moderator
Moderator
100 solutions authored 250 sign-ins 25 likes received

Hello @yere_4321266 

The TLE9180 has a Short Circuit Detection (SCD) feature:

The external FETs controlled by the driver IC are supervised for short circuit. The short circuit detection SCD measures the drain source voltage of the external MOSFETs by detecting the voltage difference VDHxVDHP-SHx and SHx-SLx compared to the programmed voltage level. The short circuit detection can be configured in a wide range. The threshold levels, the filter-,blanking times and the failure behavior are adjustable. Two additional failure behaviors can also be adjusted. Short circuit will not be detected if a duty cycle range at the external FET is applied which is shorter than the SCD filter and the SCD blanking time. Short circuit detection is operational as long as no under voltage of the high-side buffer capacitors is detected. 

RupakC_0-1702980104219.png

 

If you need any other assistance, do let me know. 

Regards

 

RupakC
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