Industrial smart high side switch ITS42k5D-LD-F test-bench: overtemperature protection

Open online SPICE simulator circuit link: power_24V_high_side_ITS42k5D-LD-F_overtemperature_protection.tsc

24V Dual Channel High-Side Switch ITS42k5D-LD-F
Protection Features: Thermal shutdown

Thermal model description:
Thermal Model = 1: 1S0P PCB 600mm2
Thermal Model = 2: 2S2P PCB with via
Thermal Model = 3: 1S0P PCB with via
Thermal Model = 4: 1S0P PCB 600mm2
Thermal Model = 5: 1S0P PCB with footprint

The ITS42k5D-LD-F is a 2.5Ω dual channel high-side power switch and
optimized for driving all types of resistive, inductive and capacitive loads.

This circuit demonstrates the thermal shutdown features of the ITS42k5D-LD-F.
Many other switches provide similar protection features.

Considering thermal behavior (choose thermal model 1....5), the junction temperature
is also rising quickly. When the thermal shutdown trip point TSDOFF is reached, the
in-built protector switches OFF the respective channel. The output remains OFF until
the junction is cooled down to the thermal shutdown release point TSDON.

{1. click here to set circuit parameters}
{2. click on "Run" to calculate components}
{3. click on "OK" and Simulate Transient }

{Supply voltage [V]}
Vs:= 24 {use 4.5 ... 42}

{Short circuit on/off trigger time [s] for channel 1 }
tSC1_on:= 2m
tSC1_off:= 6m

{Short circuit on/off trigger time [s] for channel 2 }
tSC2_on:= 4m
tSC2_off:= 8m

{Thermal model number: }
THERMALMODEL:= 1 {use 1 ... 5}