Simple Discrete Controller with PWM Power Output

One of problems of the most common used industrial controllers is in their very expensive price. Moreover, they not offer any other features except some basic ones, how to affect controlling process (e.g. settings of PWM (Pulse Wide Modulation) switching frequency). On the other side, developing of a new analog controller to control a simple system is not reasonable due to financial or time issues. That is the reason why we decided to build a simple, discrete controller and implement its algorithm into a single chip, eight bit microcontroller unit (MCU). Such a discrete PSD controller is characteristic for its simplicity and variability. It can control a plenty of less complicated systems by a simple change of its characteristic parameters. Thanks to modern approach it is possible to create a full-featured controller including power action element on a tiny area equal to 7 cm².