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US 8,710,814 B1Granted
Systems and methods for switching supply load current estimation
AssigneeAdaptive Digital Power, Inc.
InventorDonald Wile
Life of this patent
Estimating the term…
Abstract
Systems and methods are disclosed to detect a load current in a power regulator by providing power output through power transistors each having a plurality of dead time periods during break-before-make (BBM) of the power transistors; and measuring the load current of the output power circuit during the dead time period.
Claims20
A power regulator, comprising:
- a. an output power circuit having a plurality of dead time periods;
- b. a load current detector coupled to the output power circuit to measure a load current of the output power circuit during the dead time periods;
- c. a current mirror;
- and
- d. a controller to turn off the output power circuit during the dead time periods, wherein the controller turns on and off current measurement to prevent current measurement from degrading the efficiency of the power regulator and the current mirror is active to supply an output current being proportional to the detected load current of the power regulator.
2 more elements
A method to detect a load current in a power regulator, comprising:
- a. providing power output through power transistors each having a plurality of dead time periods during break-before-make (BBM) of the power transistors;
- and
- b. measuring the load current of the output power circuit during the dead time period;
- and
- c. turning on and off current measurement by a controller to prevent current measurement from significantly degrading the efficiency of the power regulator and making active a current mirror to supply an output current being proportional to the detected load current of the power regulator.
2 more elements
Dependencies are inferred from the claim text.