MOSFET Control problem with PIC PWM Signal

Status
Not open for further replies.
J

jean12

Advanced Member level 2
Joined
Aug 27, 2013
Messages
529
Helped
5
Reputation
12
Reaction score
6
Trophy points
18
Activity points
5,497
Hello,can some body tell me what I can do for controlling my MOSFET here,I am applying a controlling signal but I don't get the output but the MOSFET are becoming highly hot.

Please Help.

Thanks.
 

Attachments

  • Schema.pdf
    231 KB · Views: 226

Your H-Bridge Circuit is wrong. http://www.talkingelectronics.com/projects/H-Bridge/H-Bridge-1.html

You have to use 2 pairs of N and P Channel MOSFETS. Study how H bridge works. One N-Channel and One P-Channel MOSFET will be active at a time.

Where is the bias voltage for the MOSFETS? MOSFETS need a reverse voltage for the gate. Use design 6 from the above link.
 
Last edited:


Last edited:


The opto isolator is HV400IP ,the signal is being generated by a Microcontroller PIC16F1827 using Tahmid blog ,it is generating two signals of 50Hz and 2 signals of 20KHz so those four are applied on the gate of the MOSFETs;when applying the signal the MOSFET (IRFP460) became very hot.

Please help.

Thanks
 

hello Jean, Can get an idea from this ,try
 

So how can you help me with the MSOFET of the same types in H_Bridge??

Thanks.
 
Reactions: bandu

    B

    bandu

    Points: 2
    Helpful Answer Positive Rating
Jean, One of my friend gave this note ,he said, he also download it from net ,this is PIC driving motor circuit, I think this may be helpful to you.
bandu.
 

Attachments

  • P9-059.pdf
    5.7 MB · Views: 217

Jean ,read this page to get an idea
Bandu
**broken link removed**
 

Me I am using HV400 as drive and MOSFET IRFP 460;the PIC16F1827 is giving PWM signal of 20KHZ and 50Hz .

Can you please help me to think far on this implementation??

Thanks,please help
 

jean see this
bandu
 

Hello I am using only N-Type MOSFET?and I found that it is possible to use them so help me with that.
 

jean .Did you find any solution ,for your mosfet control?
bandu
 

No,I didn't.
Please help.
 

Status
Not open for further replies.

Similar threads

Menu
Log in
Register
Cookies are required to use this site. You must accept them to continue using the site. Learn more…