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US 5,982,160 AGranted
DC-to-DC converter with inductor current sensing and related methods
AssigneeHarris Corporation
InventorsMichael M. Walters, Charles E. Hawkes
Life of this patent
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AssigneeHarris Corporation
InventorsMichael M. Walters, Charles E. Hawkes
Estimating the term…
A DC-to-DC power converter includes at least one power switch, a pulse width modulation circuit for generating control pulses for the at least one power switch, an output inductor connected to the at least one power switch, and a current sensor connected in parallel with the inductor for sensing current passing through the inductor. The current sensor preferably includes a resistor and a capacitor connected together in series. The current sensor is connected to a peak current control loop circuit cooperating with the pulse width modulation circuit for controlling the at least one power switch responsive to the current sensor. The resistor and capacitor preferably have respective values so that the current sensor is a substantially instantaneous current sensor. The output inductor has an inductance and a direct current (DC) resistance defining a first time constant. In one embodiment, the resistor and capacitor of the current sensor define a second time constant within a predetermined range of each other. In another embodiment, the resistor and capacitor of the current sensor define a second time constant substantially equal to the first time constant.
A DC-to-DC converter comprising:
A DC-to-DC converter comprising:
A DC-to-DC converter comprising:
A method for regulating a DC-to-DC converter comprising at least one power switch, a pulse width modulation circuit for generating control pulses for the at least one power switch, an output inductor connected to the at least one power switch, and a peak current control loop circuit cooperating with the pulse width modulation circuit, the method comprising the steps of:
Dependencies are inferred from the claim text.