PWM, H-Bridge and NCO - PIC16F18446

[Ioannis]

The above seemed too complicated.

I think I better use this design route:

1. Use an PWM, NCO, CWG, CLC capable MCU like the ...K42 one. These chips may drive the PWM signal to the desired pin, so I can control the H-Bridge operation at will, according to the needs of the load.

2. On the H-bridge use Gate the IRS2890 driver that has also current limiting capability.

3. Use the MCU to control the upper Mosfets of the bridge as PWM to regulate the voltage required to the load

4. Use the MCU to control the lower Mosfets of the bridge to control the On/Off of the 0-50 Hz signal

On the above scheme, CLC may not be needed.

On Monday I will order the required parts to assemble a prototype. Though it will be mostly on air I hope it will work good enough to verify the idea.

Unfortunately the IRS2890 is available only in SMD but anyways...

Have found MosFets that should cover the SOA that is needed.

Any ideas welcome,
Ioannis