24V Automotive Smart Low-Side Power Switch HITFET™ BTF3050TE: PWM Application Circuit

Open online SPICE simulator circuit link: atv_bp_24V_smart_low_side_switch_BTT3018EJ_application_circuit.TSC


12V Automotive Smart Low-Side Power Switch HITFET™ BTF3050TE

Application circuit: PWM Input Signal

change simulation time:
"Analysis->Transient: Start - End Display"

{ Please double click here to enter design criteria }

{ Battery Voltage }
V_BAT := 24;
{ Load types see below }
LOAD_TYPE := 16;
{ Bulb ambient temperature }
Tamb_bulb := 25;
{ Switching slew rate }
Rsrp := 5.8k;
{ Switching frequency }
FS := 200;
{ Duty cycle in% }
DUTY := 50;

The BTT3018EJ is a 16 mΩ single channel Smart Low-Side Power Switch within a PG-TDSO-8-21
package providing embedded protective functions. The power transistor is built by a N-channel
vertical power MOSFET. The BTT3018EJ is monolithically integrated. The BTT3018EJ is automotive
qualified and is optimized for 24V automotive applications

The model of the bulb has the thermal behavior of the intrinsic resistance inside and comply with the
actual bulb cold/hot resistance of a real bulb. When the bulb is cold, the inrush current is quite big
(hence the Over Current trigger and current limitation protection) and when it heats up, the resistance
increases so the current decreases to nominal value.

The self-heating of the device has been deactivated (THERMAL_MODEL=0) so that the behavior of the
bulb can be observed.

{=== How to select a Load ===}

LOAD_TYPE:= 1 {Lamp 5W }
LOAD_TYPE:= 2 {Lamp 10W}
LOAD_TYPE:= 4 {Lamp 21W}
LOAD_TYPE:= 8 {Lamp 27W}
LOAD_TYPE= 16 {Resistive Load}
LOAD_TYPE:= 32 {Inductive Load}


Product info: BTT3018EJ
Application Note for HITFET+

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Application Note for Bulb driving capability of HITFET+