Invention Grant
- Patent Title: Active pulse positioning modulator
- Patent Title (中): 有源脉冲定位调制器
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Application No.: US12492397Application Date: 2009-06-26
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Publication No.: US08188721B2Publication Date: 2012-05-29
- Inventor: Robert H. Isham , Weihong Qiu
- Applicant: Robert H. Isham , Weihong Qiu
- Applicant Address: US CA Milpitas
- Assignee: Intersil Americas Inc.
- Current Assignee: Intersil Americas Inc.
- Current Assignee Address: US CA Milpitas
- Agent Gary Stanford
- Main IPC: G05F1/40
- IPC: G05F1/40

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.
Public/Granted literature
- US20100141225A1 ACTIVE PULSE POSITIONING MODULATOR Public/Granted day:2010-06-10
Information query
IPC分类: