In electro-tech-online I asked about my need of making a device wich could generate a sinusoidal signal (by PWM method) with a 18F4550 Ucontroller, but it seem it is not possible. Someone named Dana suggested me to see the information about this cypress device. So, the questions are:
1. Is it possible to make a threephasic 5 KHz signal (3 120 degrees unphased signals), wich could be used by a power stage to handle about 1 ampere each branch in some kind of power transistors?
2. If the signal is analog, is it a way to isolate the control stage from the power stage?
3. Is it possible to stop or restart this signals with a Ucontroller signal? Or further, to control amplitude?
4. Do this device is sold and there are existences now on Mouser, Arrow or DigiKey?