4

Shutdown function

The device is equipped with three half-bridge IC gate drivers and integrates a comparator for fault detection.

The comparator has an internal voltage reference VREF connected to the inverting input, while the non-inverting

input pin (CIN) can be connected to an external shunt resistor for current monitoring.

Since the comparator is embedded in the U IC gate driver, in case of fault it disables directly the U outputs,

whereas the shutdown of V and W IC gate drivers depends on the RC value of the external SD circuitry, which

fixes the disabling time.

For an effective design of the shutdown circuit, please refer to Application note AN4966.

Figure 6. Shutdown timing waveforms

∗

∗

∗

∗

≅

∗

_

∗

RSD and CSD external circuitry must be designed to ensure

Please refer to AN4966 for further details.

* RNTC to be considered only when the NTC is internally connected to the T/SD/OD pin.

HIN or LIN

HVG or LVG

open -drain gate

(interna l)

VREF

CI N

PROTECT ION

SD/OD

A

B

B

A

or

T/SD/OD

U

V, W

GADG250120171515FSR

STIPNS2M50-H

Shutdown function

DS12104 - Rev 3

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