STGAP2SCM datasheet(10/23 Pages) STMICROELECTRONICS

10 / 23 page

5.7

Standby function

Inorder to reduce the power consumption of both control interface and gate driving sides the device can be put in

standby mode. In standby mode the quiescent current from VDD and VH supply pins is reduced to IQDDSBY and

IQHSBY respectively, and the output remains in 'safe state' (the output is actively forced low).

The way to enter standby is to keep both IN+ and IN- high (“standby” value) for a time longer than tSTBY. During

standby the inputs can change from the “stand-by” value.

To exit stand-by, IN+ and IN- must be put in any combination different from the “standby” value for a time longer

than tstbyfilt , and then in the “standby” value for a time t such that tWUP<t < tSTBY.

When the input configuration is changed from the “standby” value the output is enabled and set according to

inputs state after a time tawake.

Figure 6. Standby state sequences

Sequence to enter stand-by mode

Sequence to exit stand-by mode

t < tSTBY

t = tSTBY

IN+ & IN-

Device status

Output

ACTIVE

STAND-BY

SAFE-STATE

ACTIVE

“stand-by”

duration too short

t = tSTBY

IN+ & IN-

Device status

Output

ACTIVE

STAND-BY

SAFE-STATE

ACTIVE

t > tstbyfilt t < tWUP

t > tSTBY

tWUP < t < tSTBY

t = tawake

ACTIVE

“stand-by”

duration

too short

duration too long

“stand-by”: IN+ = IN

- = HIGH

is any different combination

STGAP2S

Standby function

DS12541 - Rev 3

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