Switching mode power supply with spread spectrum oscillator

A vision system for a motor vehicle, comprising:

• an imaging sensor adapted for mounting on a motor vehicle so as to view a scene relative to said motor vehicle, said imaging sensor generating pixel data regarding said image;
• at least one processor for processing said pixel data generated from said imaging sensor and controlling said system, said at least one processor including at least one internal module capable of generating a periodic pulse signal, said at least one processor being programmed and operated so that said at least one internal module generates a periodic pulse signal that is a pseudo-random spread spectrum oscillator signal;
• and
• a low noise switching mode power supply, said switching mode power supply comprising a solid state switch, a modulator for driving said solid state switch in accordance with said periodic pulse drive signal generated by said at least one internal module, and an output filter at the output of said solid state switch for generating power for at least a portion of said system.