Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Register Log in

Problem with ir2110 and irf740 for motor control as it gets hot

Status
Not open for further replies.
X

Xjack

Newbie level 3
Joined
Feb 4, 2006
Messages
4
Helped
1
Reputation
2
Reaction score
1
Trophy points
1,283
Activity points
1,302
i am using IR2110 and 740 for motor control
in my circuit i use 100ohms resistor and 1N4148 in parallel HO,LO to Mosfets Gate.
47ohms at VS pin.
inputs volts is 280v.

the mosfet gets heated more 80 deg.
but the motor runs well.
what can be the problem ?
did i need to change the resistor values if this is the problem please tell me where i am wrong.
 

designs with irf740

where did u get the circuit....
i think some heatsinking will make things just fine.....
if you post the circuit it would help us to understand things more clear.....
 

irf740+ir2110

circuit
 
  • Like
Reactions: babaa

    B

    babaa

    Points: 2
    Helpful Answer Positive Rating
ir2110 irf740

I consumes less that 500MA but heat above 80~85 deg.
 

irf740

i understand that... motors are controlled by current and hence if you are gonna reduce the current then it would affect the speed of the motor.... you better try heatsinking the mosfets.....
Also that resistor you were talking about is just to prevent triggering due to leakage current so it aint any use changing it....
 

Re: irf740+ir2110

Hay Xjack can you plz post your complete circuit diagram A to Z plz i need to complete my project May God help you..

Added after 7 minutes:

Xjack said:
circuit[/quote
hay Xjack can you post circuit again plz i need it to resolve my problems plz
Click to expand...
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top