Automotive 12V Smart High Side Power Switch application circuit using PROFET™+2 BTS70012-1ESP

Open online SPICE simulator circuit link: atv_bp_smart_high_side_switch_BTS70012-1ESP_cap_charging.TSC

12 V Automotive Smart High Side Power Switch PROFET™+2 BTS70012-1ESP
Application circuit for different capacitive (electronic) loads

Thermal model description:
THERMAL_MODEL = 1: P=1W; T=85°C; PCB type: 1s0p 300mm2
THERMAL_MODEL = 2: P=1W; T=85°C; PCB type: 1s0p 600mm2
THERMAL_MODEL = 3: P=1W; T=85°C; PCB type: 1s0p footprint
THERMAL_MODEL = 4: P=1W; T=85°C; PCB type: 2s2p with thermal via

Where: P=power on the power transistor; T=ambient temperature

The ambient temperature of the entire chip can be set by connecting a voltage source to TAMB
pin. Junction temperature can be monitored on TJ output pin. TJ is always TAMB + temperature
due to self-heating of the DMOS.

Observations:
IT is required to let the TJ pin open (no external connection)
The convention is 1V=1°C

The BTS70012-1ESP is a Smart High-Side Power Switch, providing protection functions and diagnosis.
The product has a Capacitive Load Switching mode implemented to charge capacitive loads and to
reduce current peaks during switch on of capacitors.

Protection Features:
• Absolute and dynamic temperature limitation with controlled reactivation
• Overcurrent protection (tripping) with Intelligent Latch
• Under voltage shutdown
• Overvoltage protection with external components

"Analysis->Transient: Start - End Display"
- Double click on the green window to enter design criteria
- Click on "Run" and Simulate Transient