PWM driving apparatus

A PWM driving apparatus comprising:

• a PWM signal generating unit for generating first PWM signals and second PWM signals;
• a first load-driving circuit which performs switching of power-supplying to a first load based on said first PWM signals;
• and
• a second load-driving circuit which performs switching of power-supplying to a second load based on said second PWM signals,
• wherein said PWM signal generating unit comprises a carrier signal generator for generating carrier signals which are in a saw-toot wave pattern, a first comparator for generating the first PWM signals by comparing said cater signals wit command signals, a reverser for generating reversal cater signals in which said cater signals are reversed, and a second comparator for generating the second PWM signals by comparing said reversal carrier signals with said command signals, and
• wherein said first PWM signals and said second PWM signals are generated such that falling timing of one of said first PWM signals and said second PWM signals and rising timing of the other of said first PWM signals and said second PWM signals coincide with each other.