Different types of Reverse Voltage Protection types | What is the need? Reverse polarity Protection

День тому

#foolishengineer #MOSFETapplication #ReverseVoltageProtection
0:00 Skip Intro
00:44 Need of Reverse polarity Protection
01:37 PN jucntion diode / Rectifier diode
04:00 Schottky diode
05:55 P-Channel MOSFET
07:59 N-Channel MOSFET
References:
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КОМЕНТАРІ: 39

@tyronearendse1722 Рік тому

Hi friend thanks for another informative video

@FoolishEngineer Рік тому

Thank you so much! Please show support to my video with Super thanks.

@lucasianii8178 9 місяців тому

Thanks for great presentation sir, I would like to know why is resistor used on the gate and why is zener diode used, is it possible that MOSFET can work without zener diode and resistor? Thanks

@503jmn Місяць тому

Excellent video! Only minor issue is you used Zener Diode symbol for Shottkey Diode.

@FoolishEngineer Місяць тому

Thanks for the info!

@anuragmahajan5919 Рік тому

Hello Sir, we can use N channel MOSFET by placing it in between the load and -ve terminal of the source. In that case we do not need a complicated circuit, two resistors and a zener diode can do the job.

@FoolishEngineer Рік тому

Come on Anurag don't call me sir, You are right we can use N-channel MOSFET like that it is the best solution but, there are many systems where we use different grounding paths for analog and digital signal even they have different connectors and connect the layout with just a small ferrite bead so some limitations arrive for low side NMOS Reverse voltage protection. Otherwise it can be used

@johnflower8384 Рік тому

Bouth mosfet circuit is not revers voltage/current protection if d'ont revers drain wisth source terminals!

@niteshmodi7904 Рік тому

If we talk about Dc-dc converter, this is input side of converter. I am interested in output side of converter ( reverse polarity protection). If By mistake some one connect output side battery of dc dc converter reverse manner.,that will be hazard. Pls. Suggest some circuit for that Thanks in advance

@mehmetdurna3115 3 місяці тому

What is the disadvantage of using nmos in the low side (i.e. return line)? It will not need a gate drive, and will protect against reverse input.

@sudheerkumar5966 Рік тому

Very very good sir

@FoolishEngineer Рік тому

Thank you so much Sudheer, you are my top viewer!!

@sudhakarkulkarni1730 Рік тому

good information

@FoolishEngineer Рік тому

Thank you so much! Please show support to my video with Super thanks

@rameshwarshelke4633 Рік тому

Really thanks 😇,,

@FoolishEngineer Рік тому

Thank you so much! Please show support to my video with Super thanks.

@nayanjagirdar8408 5 місяців тому

👌👌👌👍

@Bianchi77 Рік тому

Nice video, thanks :)

@FoolishEngineer Рік тому

Thank you so much! Please show support to my video with Super thanks.

@Delali Рік тому

I loved watching this. I have one question, how can i charge a battery if i've added reverse polarity protection?

@FoolishEngineer 11 місяців тому

You can use dual MOSFETs

@AmitSinha249 Рік тому

One very easy and cost effective method is to use one diode and fuse.

@Deep83002 Рік тому

Hello sir, can we use Schottky diode between buck converter (20A, 25v -12v) and battery source device (12v)?

@FoolishEngineer Рік тому

you can! but can't comment until the full information of the system is known

@ramu1020 Рік тому

Good explanation, how to calculate gate resistor value while using P channel mosfet for reverse polarity protection Thank you

@FoolishEngineer Рік тому

You can find many application notes on that!

@movenext7594 Рік тому

Yoy are great teacher

@FoolishEngineer Рік тому

Thank you so much! Please show support to my video with Super thanks and don't forget to subscribe to our channel

@m.v.abhishek9475 Рік тому

Hi, how does P channel conduct here bcoz in p channel the flow of current is from source to drain , here drain is connected to batt positive, does this mean drain and source are interchangable

@FoolishEngineer Рік тому

Every MOSFET is a bidirectional device

@goodjokes9992 Рік тому

Please make a video on type of snubber circuit and it use

@FoolishEngineer Рік тому

Yeah, sure!

@SurendraKumar-ns9xt 8 місяців тому

P Channel mosfet ...in this always current flow from source to drain..

@kanjimandaviya1859 Рік тому

Sorry brother but if you use rectifier with dc input then no metter with polarity input issue output is always polarity

@Dc_tech386 9 місяців тому

I try this method in 52 volt battery the mosfets fail at no load why is this but at 12 volt the mosfet don’t fail why the voltage level damaged the mosfets

@eeroa.sarlin2424 9 днів тому

Pchsnnel MOSFET Gate source maximum voltage IS usuallyv-15 -20 or -30V depending on type , thus you should Have a zener diode between Gate andvsource, plus a series resistor to limit zener current to some mA 52V-25V requires some kiloohms such as 4.7 KOhn.