Patent · US Active

Active pulse positioning modulator

US8188721B2 · kind B2 · utility

11Cited by
7References
22Claims
0Family size

Assignee

Inventors

Key dates

Filing dateJun 26, 2009
Grant dateMay 29, 2012
Priority date
Expiry dateJul 20, 2030

Classification

  • Technology area (CPC H)Electricity
  • CPC primaryH02M3/1584
  • WIPO fieldElectrical machinery, apparatus, energy
  • WIPO sectorElectrical engineering

Abstract

An adaptive pulse positioning modulator including a sense circuit which provides a compensation signal indicative of output voltage error, a filter circuit having an input receiving the compensation signal and an output providing an adjust signal, a leading ramp circuit which provides a repetitive first leading edge ramp signal having a slope which is adjusted by the adjust signal, a comparator circuit which provides a first start trigger signal when the first leading edge ramp signal reaches the compensation signal and a first end trigger signal when a first trailing edge ramp signal reaches the compensation signal, a trailing ramp circuit which initiates ramping of the first trailing edge ramp signal when the first start trigger signal is provided, and a pulse control logic which asserts pulses on a PWM signal based on the trigger signals.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.