H-Bridge for DC motor

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H-Bridge for DC motor

Postby paulreedsmooth » Mon Nov 21, 2011 1:06 am

Hi, I am designing a H-bridge circuit for DC motor.
The motor that I am using is the automotive power window. It requires high current.

However, I use power supply up to 6A only.
I have chosen suitable MOSFETs and Schottky diodes for the circuit.


My problem is now:

(1) Finding a circuit board that can handle at least 6A of current

(2) Finding connecting wires that can handle 6A of current.
It seems that wires with AWG22 can handle 7A.
But is the cross-sectional area of the wire small enough to be fitted through the hole of the circuit board?


I hope anyone can help me out.
Thanks a lot for your help. Much appreciated.
paulreedsmooth
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Re: H-Bridge for DC motor

Postby zhenning » Wed Nov 23, 2011 4:47 pm

paulreedsmooth WROTE:Hi, I am designing a H-bridge circuit for DC motor.
The motor that I am using is the automotive power window. It requires high current.

However, I use power supply up to 6A only.
I have chosen suitable MOSFETs and Schottky diodes for the circuit.


My problem is now:

(1) Finding a circuit board that can handle at least 6A of current

(2) Finding connecting wires that can handle 6A of current.
It seems that wires with AWG22 can handle 7A.
But is the cross-sectional area of the wire small enough to be fitted through the hole of the circuit board?


I hope anyone can help me out.
Thanks a lot for your help. Much appreciated.


Are you going to buy protoboard or donut board? or ar you designing the board your self? You just need to make the traces very big.

You can make the holes bigger to fit your wires?

you can have a look at this:

http://hades.mech.northwestern.edu/inde ... n_H-bridge
zhenning
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