Control circuit for multi-phase converter
AssigneeInternational Rectifier Corporation
InventorsWenkai Wu, George Schuellein
Life of this patent
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Abstract
A control circuit for use in controlling a phase of a multi-phase voltage converter in accordance with an embodiment of the present invention includes a driver operable to provide a first control signal to a high side switch of a half-bridge of the phase and a second control signal to a low side switch of the half bridge, such that a desired output voltage is provided by the phase, current sensing circuitry operable to detect the output current of the phase, a comparator operable to compare the output current to a threshold current value and a disabling device operable to provide an enable/disable signal to disable the driver when the output current is below the threshold current value.
Claims14
A control circuit for use in controlling a phase of a multi-phase voltage converter, comprises:
- a driver operable to provide a first control signal to a high side switch of a half-bridge of the phase and a second control signal to a low side switch of the half bridge, such that a desired output voltage is provided by the phase;
- current sensing circuitry operable to detect the output current of the phase;
- a comparator operable to compare the output current to a threshold current value;
- and
- a disabling device operable to provide an enable/disable signal to disable the driver when the output current is below the threshold current value thereby shedding the phase.
Dependencies are inferred from the claim text.