US 7,453,246 B2 · Adaptive PWM pulse positioning for fast transient response

Abstract

An adaptive pulse positioning system for a voltage converter providing an output voltage, the system including a PWM generation circuit, a sensor, and a pulse positioning circuit. The PWM generation circuit generates a PWM signal with PWM pulses for controlling the output voltage of the voltage controller. The sensor senses an output load condition of the voltage converter and provides a load signal indicative thereof. The pulse positioning circuit adaptively positions the PWM pulses based on the load signal. A method of adaptively positioning PWM pulses that are used to control an output voltage of a voltage regulator including generating a series of PWM pulses based on a clock signal, sensing an output load condition, and adaptively shifting the series of PWM pulses based on the output load condition.

Claims20

Dependent claims

An adaptive pulse positioning system for a voltage converter providing an output voltage, said adaptive pulse positioning circuit comprising:

a pulse width modulation (PWM) generation circuit which generates a PWM signal comprising a plurality of PWM pulses for controlling the output voltage of the voltage controller, wherein said PWM signal comprises a predetermined number of PWM pulses per cycle of a clock signal;
a sensor which senses an output load condition of the voltage converter and which provides a load signal indicative thereof;
and
a pulse positioning circuit, coupled to said sensor and said PWM generation circuit, which adaptively positions said plurality of PWM pulses based on said load signal without changing said predetermined number of PWM pulses per cycle of said clock signal.

1 more element

Dependencies are inferred from the claim text.

Adaptive PWM pulse positioning for fast transient response

Life of this patent

Adaptive PWM pulse positioning for fast transient response

Life of this patent

Abstract

Claims20