Raspi 3B Latching MOSFET switch

4 years ago 3108
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Latching Mosfet switch Based on work at: http://www.mosaic-industries.com/embedded-systems/microcontroller-projects/raspberry-pi/on-off-power-controller

R8 allows a shorter wait period on switch hold / raspi gpio driven low or a 3.3v Zener diode can/should be used to protect GPIO pin

Mosfets are separate devices In PCB V1 the P-Channel device is TO-220 while the N-Channel is DPAK In PCB V2 both are DPAK footprint

N-Channel mosfet is not critical anything that will start conducting around 3v will do

P-Chan mosfet more important Logic Level FET is needed and should have as low of an RDS(on) at 4.5v as possible

See Code Attached!


Mosfet Sw PCB1

Mosfet Sw PCB2

Mosfet Latch Switch




Filename Download


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Comments (1)

maurespo Reply

Hi Bilgus,

I found your circuit interesting. Precisely, which mosfet p channel have you used on your board?

Thank you,

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