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2005-06-08 – Rev02

© by SEMIKRON

Over Temperature Protection Circuit (OTP)

The external error input SEC_TOP_ERR_IN on the secondary side (high potential) of the driver core is used for

an over temperature protection circuit to place the gate driver into halt mode.

Dimensioning OTP

1. Define an over temperature trip level according to the application.

2. Calculate the nominal ohmic resistance value of the temperature sensor at the defined trip

level (see "Modules – Explanations - SEMiX

3. The trip level on the adapter board is set with R172 by using the calculated resistance value.

Factory setting R172: not equipped

If no resistor is used, a failure signal is generated.

Mounting Notes

The electrical connections between evaluation board and SEMiX

SEMiX

Evaluation Board & Driver Core Mounting

adapter board.

2. Evaluation Board has to be fixed to the SEMiX

(see "Mounting Instruction and Application Notes

for SEMiX

3. Insert driver core into the box connector on evaluation

board.

The connection between driver core and evaluation board

should be mechanical reinforced by using support posts.

The posts have to be spaced between driver core and

evaluation board.

Product information of suitable support posts and distributor

Please note:

If the contacting points T1 and T2 are used for evaluation of the temperature sensor, the Over Temperature Protection

Ciruit must be disabled by taking out the resistors R175, R178 and R179.