Figure 4. Standby state sequences

Sequence to enter stand-by mode

Sequence to exit stand-by mode

t < tSTBY

t = tSTBY

INA, INB, SD, BRAKE

Device status

Output

ACTIVE

STAND-BY

SAFE-STATE

ACTIVE

“stand-by”

“stand-by”

duration too short

t = tSTBY

Device status

Output

ACTIVE

STAND-BY

SAFE-STATE

ACTIVE

t > tstbyfilt t < tWUP

t > tSTBY

tWUP < t < tSTBY

t = tawake

ACTIVE

ACTIVE

“stand-by”

“stand-by”

“stand-by”

“stand-by”

duration

too short

duration too long

INA = INB = BRAKE = HIGH

is any different combination

SD = LOW

“stand-by”:

{

INA, INB, SD, BRAKE

6.7

Interlocking function

The interlocking function prevents outputs GOUT_A and GOUT_B from being high at the same time, regardless

of the status of the input pins INA and INB. In half-bridge topologies this protection avoids shoot-through in case

that wrong input signals are generated by the controller device. In case the status of INA and INB is such to

require both channels to be ON at the same time, the driver turns both channels off. In some topologies it is

required to allow both channels to be ON at the same time: this can be achieved by disabling the interlocking

function trough the iLOCK pin. The iLOCK pin shall be either connected to VDD, which enables the interlocking

function, or to GND, which disables the interlocking function and allows parallel operation of Channel_A and

Channel_B. Refer to Section 6.3 for complete logic inputs truth table.

STGAP2HD

Interlocking function

DS13652 - Rev 2

page 12/24