Sequential burnst mode activation circuit
First Claim
1. A variable power regulator, comprising:
- a pulse modulator generating a pulse signal having a pulse width; and
a phase delay array receiving said pulse signal and a frequency selection signal, and generating a plurality of phased burst signals, each having a frequency determined by said frequency selection signal wherein at least tWo of said phased burst signals have different start times.
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Abstract
A sequential burst mode regulation system to deliver power to a plurality of loads. In the exemplary embodiments, the system of the present invention generates a plurality of phased pulse width modulated signals from a single pulse width modulated signal, where each of the phased signals regulates power to a respective load. Exemplary circuitry includes a PWM signal generator, and a phase delay array that receives a PWM signal and generates a plurality of phased PWM signals which are used to regulate power to respective loads. A frequency selector circuit can be provided that sets the frequency of the PWM signal using a fixed or variable frequency reference signal.
124 Citations
56 Claims
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1. A variable power regulator, comprising:
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a pulse modulator generating a pulse signal having a pulse width; and
a phase delay array receiving said pulse signal and a frequency selection signal, and generating a plurality of phased burst signals, each having a frequency determined by said frequency selection signal wherein at least tWo of said phased burst signals have different start times. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 55)
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27. A method for generating phase shifted burst mode signals, comprising the steps of:
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generating a pulse signal having a pulse width;
generating a frequency selection signal;
generating a plurality of phased burst signals having a frequency of said frequency selection signal and said pulse width of said pulse signal; and
delaying at least one of said phased pulse signals to have a different start time than at least one other of said phased burst signals. - View Dependent Claims (28, 29, 30)
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31. A phased burst mode dimming system, comprising:
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a pulse width modulator generating a pulse width modulated signal;
a variable selector for selecting the width of said pulse width modulated signal; and
a phase delay array receiving said pulse modulated signal and said frequency selection signal, and generating a plurality of phased burst signals by generating a phase delay between at least two said pulse width modulated signals. - View Dependent Claims (32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 56)
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Specification