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US 2010/0301826 A1Published application
System and method for oring phases to overcome duty cycle limitations in a multi-phase boost converter
AssigneeIntersil Americas Inc.
InventorsZAKI MOUSSAOUI, JIFENG QIN, SITTHIPONG ANGKITITRAKUL
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Abstract
A multiphase boost converter includes a multiphase PWM controller for generating a plurality of PWM signals. A plurality of boost converters are each associated with a separate phase connected between an input voltage node and an output voltage node and generating an output voltage responsive to an input voltage and the plurality of PWM signals. Phase nodes of each of the plurality of boost converters are ORed to each other.
Claims20
A multiphase boost converter, comprising:
- a multiphase PWM controller for generating a plurality of PWM signals;
- and
- a plurality of boost converters, each associated with a separate phase connected between an input voltage node and an output voltage node, for generating an output voltage responsive to an input voltage and the plurality of PWM signals, wherein a phase node of each of the plurality of boost converters are ORed to each other.
A method for operating a multiphase boost converter, comprising the steps of:
- connecting a phase node of a plurality of plurality of boost converters associated with the multiphase boost converter with each other;
- generating a plurality of PWM signals;
- and
- generating an output voltage responsive to an input voltage and the plurality of PWM signals.
1 more element
Dependencies are inferred from the claim text.