Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Having specific delay in producing output waveform
Reexamination Certificate
2011-07-12
2011-07-12
Donovan, Lincoln (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Having specific delay in producing output waveform
C327S269000, C327S273000, C327S274000
Reexamination Certificate
active
07977994
ABSTRACT:
A hybrid digital pulse width modulator (DPWM) with digital delay-locked loops (DLLs) is provided. In this implementation, the digital pulse-width-modulator is synthesizable and includes a digital delay-locked loop around a delay-line to achieve constant frequency clocked operation. In this implementation, the resolution of the modulator is consistent over a wide range of process or temperature variations. The DPWM may implement trailing-edge, leading-edge, triangular, or phase-shift modulation. In an implementation suitable for DC-DC converters with synchronous rectifiers, for example, the DPWM may include two or more outputs for programmable dead-times. In another implementation, a digital pulse-width-modulator with a digital phase-locked loop is also provided.
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Carosa Anthony
Maksimovic Dragan
Takayama Toru
Yousefzadeh Vahid
Donovan Lincoln
Hamilton DeSanctis & Cha, LLP
Osborne, Jr. Thomas J.
Poos John W
The Regents of the University of Colorado, a body corporate
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