24V dual channel smart high side switch BTF6070-2EKV test-bench short circuit and over-temperature protection

Open online SPICE simulator circuit link: atv_bp_protection_24V_BTF6070-2EKV_short_circuit_overtemperature.tsc


24V Dual Channel Smart High-Side Switch BTF6070-2EKV
Protection Features: Short Circuit with Current Limitation
& Over-Temperature Latch

{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 5 ... 42}

{Short circuit on/off trigger time [s] for channel 0 }
tSC0_on:= 0.5m
tSC0_off:= 2.5m

{Short circuit on/off trigger time [s] for channel 1 }
tSC1_on:= 2.0m
tSC1_off:= 3.0m


{Thermal model number: }
ThermalModel:=1 {use 1 .... 4}

{Thermal model description: }
{Thermal Model = 1: 2S2P PCB }
{Thermal Model = 2: 1S0P PCB 300mm2 }
{Thermal Model = 3: 1S0P PCB 600mm2 }
{Thermal Model = 4: 1S0P PCB footprint }

The BTF6070-2EKV is a 60 mΩ dual channel Smart High-Side Power Switch
It is specially designed to drive Valve Applications in the harsh automotive
environment.The µC compatible power switch can serve a wide application
portfolio starting from 12V, 24V and up to 42V DC.

This circuit demonstrates the short circuit with current limitation and over-
temperature latch protection features of the BTF6070-2EKV. Many other
PROFET™ devices provide similar protection features.

Once short circuit condition occurs, the load current increases dramatically
and the instantaneous power in the switch is maintained at a safe value by
limiting the current to the maximum current allowed in the switch IL(SC).
During this time, the DMOS temperature is increasing, which affects the current
flowing in the DMOS.



PROFET™ +24V: What the designer should know

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Product info: BTF6070-2EKV