I think I don’t have to explain what is H-Bridge circuit. Well, it is mainly used to drive DC motors that they could be run forward and backward. The circuit is often used in robotics.
![Mosfet_IRF7105.PNG](https://scienceprog.com/wp-content/uploads/2021/01/image-112.png)
Usually, there is a need to build a small, powerful, and with good characteristics H-Bridge. One solution is to use IRF7105 p and n channel MOSFET pair coated in the SO8 SMD case.
As you can see, MOSFETs have good characteristics for driving direct current, like the maximum current is 3.5A for N and 2.3A for the P channel. The main thing here is a voltage drop on transistors, which depends on Rds resistance.
![h-bridge1.gif](https://scienceprog.com/wp-content/uploads/2021/01/image-129.gif)
Controlling is very easy. You may use MCU or any manual switch to produce control levels on F1, F2, B1, and B2 wires:
- F1=0, F2=1, B1=0 and B2=1 – motor turns forward;
- F1=1, F2=0, B1=1 and B2=0 – motor turns backwards;
- F1=1, F2=0, B1=0 and B2=1 – motor stop.
Dear i used this circuit but when i put the 5v to f1&b1 or f2&b2, always burn this ic please teach me what is the problem.
Regard.
Using motor 200ma only
because you create a short circuit between the n and p channel mosfet
Extremely interesting