06107851 is referenced by 45 patents and cites 67 patents.

A pulse width modulated switch comprises a first terminal, a second terminal, and a switch that allows a signal to be transmitted between the first terminal and the second terminal according to a drive signal provided at a control input. The pulse width modulated switch also comprises a frequency variation circuit that provides a frequency variation signal and an oscillator that provides an oscillation signal having a frequency of that varies within a frequency range according to the frequency variation signal. The oscillator further provides a maximum duty cycle signal comprising a first state and a second state. The pulse width modulated switch further comprises a drive circuit that provides the drive signal when the maximum duty cycle signal is in the first state and a magnitude of the oscillation signal is below a variable threshold level.

Title
Offline converter with integrated softstart and frequency jitter
Application Number
9/80774
Publication Number
6107851
Application Date
May 18, 1998
Publication Date
August 22, 2000
Inventor
Leif Lund
San Jose
CA, US
Alex Djenguerian
Saratoga
CA, US
Balu Balakirshnan
Saratoga
CA, US
Agent
Blakely Sokoloff Taylor & Zafman
Assignee
Power Integrations
CA, US
IPC
H03K 17/16
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