Patent ID: 7554370
Filing Date: 2009-06-30
Classification: H03K,H03L

Abstract:
1. A phase synchronization system comprising: a reference voltage circuit for generating a multiplicity of reference voltages from the voltage of a power supply; a first device for outputting a triangular wave signal; a second device having a capacitor connection terminal for connecting thereto a capacitor, and generating a triangular wave signal to said capacitor connection terminal; and a phase synchronization circuit for comparing any one of said multiplicity of reference voltages with the triangular wave signal outputted from said first device, and supplying to said capacitor a voltage for deciding a maximum or minimum limit of the triangular wave signal generated by said second device in accord with the comparison result; wherein said phase synchronization system is adapted to set optionally a phase difference of the triangular wave signal outputted from said first device and the triangular wave signal generated by said second device in accord with said multiplicity of reference voltages.