06198265 is referenced by 15 patents and cites 22 patents.

An electrical circuit provides a fixed frequency switching regulator, having improved dynamic response, and a low count of external discrete elements. The circuit can be used at 100% duty cycle and does not require a minimum load or the components usually found in such circuits for compensation. A current source is used to charge a timing capacitor. A comparator is used in conjunction with a hysteresis circuit so that as the timing capacitor is charged the voltage on one input of the comparator rises until reaching a set input voltage level whereupon the timing capacitor is discharged to ground. A PWM latch logic element is used to control output to a control switch, a FET, so that positive going output pulses are received at an output terminal. A divider network between the output terminal and the timing capacitor along with a switch controlled by the PWM latch element are used for slope compensation for maintaining operational synchronization to the oscillator.

Title
Fixed frequency switching regulator with improved dynamic response
Application Number
9/99998
Publication Number
6198265 (B1)
Application Date
June 19, 1998
Publication Date
March 6, 2001
Inventor
Brian Keith Stevenson
Lake Forest
CA, US
Agent
Gene Scott Patent Law & Venture Group
US
Assignee
Unisem
CA, US
IPC
G05F 1/575
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