IPS2050H datasheet(15/32 Pages) STMICROELECTRONICS

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Figure 10. Short-circuit behavior with dual threshold (TCASE < TCSD)

IOUT

DPKX

time

ILIMH-X

ILIML-X

VINX

FLTX

time

TAMB

TJSD

TJR

7.3.2

Overload protection with single (low) threshold

The user can set the activation threshold to IPKL-X and the limitation level to ILIML-X by connecting the IPDX pin to

the related INX pin with a 220 KΩ resistor.

This condition is equivalent to setting DPKX = 0 μs.

Note:

Leaving IPDX floating is equivalent to having an initial peak duration of 1 μs.

7.3.3

Overload protection with single (high) threshold

The user can set the activation threshold to IPKH-X and the limitation level to ILIMH-X by connecting the IPDX pin to

GND with a 10 KΩ resistor.

7.4

VCC disconnection protection

VCC disconnection involves the disconnection of the module from the supply line. When this condition is detected,

the output channel can be driven normally until the voltage on VCC pin remains higher than the UVLO threshold.

In case of inductive load, if the VCC is disconnected while the channel is active, the energy stored in the

inductance is discharged through the power switch thanks to the integrated demagnetization circuit.

IPS2050H, IPS2050H-32, IPS2050HQ, IPS2050HQ-32

VCC disconnection protection

DS13779 - Rev 3

page 15/32

IPS2050H Datasheet(PDF) 15 Page - STMicroelectronics