6.3

Control inputs

The device is controlled through the IN+ and IN- logic inputs, in accordance with the truth table below.

Input pins

Output pins

IN+

IN-

GON

GOFF

L

L

OFF

ON

H

L

ON

OFF

L

H

OFF

ON

H

H

OFF

ON

A deglitch filter allows input signals with duration shorter than tdeglitch to be ignored, thereby preventing noise

spikes potentially present in the application from generating unwanted commutations.

6.4

Miller Clamp function

The Miller clamp function allows the control of the Miller current during the power stage switching in half-bridge

configurations. When the external power transistor is in the OFF state, the driver operates to avoid the induced

capacitance.

During the turn-off period the gate of the external switch is monitored through the CLAMP pin. The CLAMP switch

between the switch gate and the GNDISO pin.

6.5

Watchdog

The isolated HV side has a watchdog function in order to identify when it is not able to communicate with LV side,

for example because the VDD of the LV side is not supplied. In this case the output of the driver is forced in “safe

state” until communication link is properly established again.

6.6

Thermal shutdown protection

threshold, the device is forced in “safe state”. The device operation is restored as soon as the junction

STGAP2HS

Control inputs

DS13393 - Rev 5

page 9/22