Automotive smart high side switch BSP742R test-bench: overvoltage & undervoltage protection

Open online SPICE simulator circuit link: atv_bp_protection_12V_BSP742R_ov_uv.tsc


Smart High-Side Switch BSP742R
Protection Features: Overvoltage, Undervoltage with restart

Thermal model description:
THERMALMODEL = 1: 1S0P PCB 600mm2
THERMALMODEL = 2: 2S2P no vias
THERMALMODEL = 3: 2S2P vias

The BSP742R is high side power switch with integrated vertical power FET,
providing embedded protection and diagnostic functions.

This circuit demonstrates the overvoltage and undervoltage protection features
of the BSP742R. Many other switches provide similar protection features.

With a sweep supply voltage from 0 to 60V and back to 0V the overvoltage
and undervoltage protection features are demonstrated. The devices start
switching above the minimum functional supply voltage Vbb(on) about 5V
and will be shut down if it is below the undervoltage vbb(under) of 5V and
it restarts if the supply voltage above vbb(ucp) of 5.5V. When supply voltage
Vbb(on) is higher than Vbb(AZ) about 41V device is shutdown.

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

{Thermal model number: }
THERMALMODEL:= 1 { use 1....3 }



Technical Assistance
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PROFET™: What the designer should know
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Product info: BSP742R