5.3

Control Inputs

The device is controlled through the following logic inputs:

•

SD: active low shutdown input;

•

BRAKE: active low brake input;

•

INA, INB: active high logic inputs for channel A and channel B driver outputs;

•

iLOCK: used to enable or disable the interlocking protection

The operation of the driver IOs is described in Table 9.

Input pins(1)

Output pins

iLOCK

SD

BRAKE

INA

INB

GOUT_A

GOUT_B

X

L

X

X

X

Low

Low

X

H

L

X

X

Low

HIGH

X

H

H

L

L

Low

Low

X

H

H

H

L

HIGH

Low

X

H

H

L

H

Low

HIGH

Interlocking

VDD

H

H

H

H

Low

Low

GND

H

H

H

H

HIGH

HIGH

1. X: Don’t care.

spikes in the application from generating unwanted commutations.

5.4

Watchdog

The isolated HV side has a watchdog function to identify when it is not able to communicate with the LV side; for

example, because the VDD of the LV side is not supplied. In this case, the output of the driver is forced into 'safe

state' until the communication link is properly established again.

5.5

Thermal shutdown protection

threshold, the device is forced into 'safe state'. Device operation is restored as soon as the junction temperature

5.6

Standby function

The device can be put in standby mode to reduce the power consumption of both the control interface and gate

To enter standby, keep the SD low while keeping the other input pins (INA, INB and BRAKE) high ('standby' value)

To exit standby, inputs must be put in any combination different from the 'standby' value for a time longer than

When the input configuration is changed from the 'standby' value, the output is enabled and set according to

STGAP2D

Control Inputs

DS12746 - Rev 3

page 9/22