![Ir2110 arduino cpde](https://kumkoniak.com/105.jpg)
![ir2110 arduino cpde ir2110 arduino cpde](http://3.bp.blogspot.com/-SHzBcCnNvmg/VDpGmOcTJXI/AAAAAAAAA5k/5IcavOpzBzY/s1600/mos%2Bconfig.png)
PROBLEM: when the controller applies the pwm and tries to run the motor, short circuit occurs trough one side of the H bridge and lower schottky diode burns and after that the motor starts. When i switched to second design i got this problem. I used 7812 for 12V charge pump, 7805 for 5V input Everything is grounded to a common household ground. I have ceramic 100nf decoupling everywhere. I separated(different PCB) the controller form the drivers and the drivers from the H-bridge. I tested the driver part of the scheme and it has valid outputs. I retained bypass schotky didoes on the second design. Board was scrapped but the mosfets were intact.Īlso values of the charge capacitors seemed too high(100uF) in the first design. After few minutes mosfets opened themselves and short circuited the battery(2*12V 45Ah in series) making small fire. The reason i switched to second design is that previous missed the gate to source resistors. H bridge runs a brushed DC 18v 1ohm motor form cordless drill (non loaded)Īnd modified it when i found this: (figure 8)ĭesigns are same except second has lower values of caps, superfast diodes and pull down resistors form gate to source, and bunch of decoupling caps. I'm working on h-bridge with two ir2110 and ir3205 mosfet's.ģ0Khz PWM comes from atmega168 (gradually rising form 0 to 200 and back to zero in 1.5 sec)
![Ir2110 arduino cpde](https://kumkoniak.com/105.jpg)