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High side PMOSFET switch

3 years ago 651
  • Description
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Description

A simple demonstration of a high side power switch using an P channel MOSFET.

In this example the MOSFET is being used to drive a resistive load with some parallel capacitance.

Note how the capacitor is discharged through the MOSFET body diode as VDD falls.

Just press CTRL+R to run the simulation.

The Diodes Inc. DMP4015SK3 spice subckt model is in the EasyEDA library.

To create a simulation using this device, simply place the PMOS_E symbol from the EasyEDA Libs in the left hand Navigation panel, select the symbol in the schematic, press the 'I' key, then change the 'Spice Prefix' from 'M' to 'X' and click OK.

Then double click on the 'PMOS_E' name, change it to 'DMP4015SK3' then click back on the schematic canvas.

Done!

Documents

High side PMOSFET switch

BOM

ID Name Designator Footprint Quantity
1 PULSE(11.5 0.5 0.25m 10u 10u 300u) V1 2P-5.0 1
2 PULSE(0 12 0 50u 50u 1.6m) V2 2P-5.0 1
3 10 RLOAD R3 1
4 DMP4015SK3 M1 NONE 1
5 100u C1 1206 1

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