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US 7,023,188 B1Granted
Method of forming a multi-phase power supply controller
AssigneeSemiconductor Components Industries, LLC
InventorBenjamin M. Rice
Life of this patent
Estimating the term…
Abstract
In one embodiment, a power supply controller has a plurality of PWM control channels. The PWM control signals of the PWM control channels are selectively alternated among the outputs of the power supply controller.
Claims20
A method of forming a power controller comprising:
- forming the power controller to include at least a first PWM controller, a second PWM controller, a first PWM output operable for coupling to a first power stage, and a second PWM output operable for coupling to a second power stage;
- configuring the power controller to selectively use a first PWM control signal from the first PWM controller to control a first PWM drive signal on the first PWM output for a first time period;
- and
- configuring the power controller to selectively use the first PWM control signal from the first PWM controller to control a second PWM drive signal on the second PWM output for a second time period.
1 more element
A method of controlling a power supply comprising:
- using a first PWM control signal from a first PWM controller to control a first power switch of the power supply for a first time period;
- using a second PWM control signal from a second PWM controller to control a second power switch of the power supply;
- and
- using the first PWM control signal from the first PWM controller to control the second power switch for a second time period.
1 more element
A power supply controller comprising:
- a first plurality of PWM drive outputs;
- a second plurality of PWM controllers, each PWM controller operable to generate a PWM control signal;
- and
- a control circuit operable to selectively couple a first PWM control signal to control a first PWM drive output of the first plurality of PWM drive outputs during a first time period and to couple the first PWM control signal to control a second PWM drive output of the first plurality of PWM drive outputs during a second time period.
1 more element
Dependencies are inferred from the claim text.