Pulse width modulated power regulator with loop stabilizer
AssigneeAnalog Devices Technology
InventorsDan LI, Jinhua NI
Life of this patent
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Abstract
A circuit may include a detector, a modulator, a switch, and a stabilizer. The detector may detect current supplied to an output of the circuit to generate an overcurrent signal. The modulator may modulate a pulse signal based upon the output of the circuit. The switch may control a power stage to generate the output of the circuit based upon the overcurrent signal and the pulse signal. The stabilizer may send an offset signal to the modulator. The stabilizer may generate the offset signal with a magnitude adjusted based upon the overcurrent signal, and the modulator may adjust the pulse signal based upon the offset signal.
Claims20
A circuit, comprising:
- a detector detecting current supplied to an output of the circuit to generate an overcurrent signal;
- a modulator modulating a pulse signal based upon the output of the circuit;
- a switch controlling a power stage to generate the output of the circuit based upon the overcurrent signal and the pulse signal;
- and
- a stabilizer sending an offset signal to the modulator,
- wherein the stabilizer generates the offset signal with a magnitude adjusted based upon the overcurrent signal, and the modulator adjusts the pulse signal based upon the offset signal.
A method for controlling a circuit, comprising:
- detecting, by a detector, current supplied to an output of the circuit to generate an overcurrent signal;
- modulating, by a modulator, a pulse signal based upon the output of the circuit;
- controlling, by a switch, a power stage to generate the output of the circuit based upon the overcurrent signal and the pulse signal;
- and
- sending, by a stabilizer, an offset signal to the modulator,
- wherein the stabilizer generates the offset signal with a magnitude adjusted based upon the overcurrent signal, and the modulator adjusts the pulse signal based upon the offset signal.
A non-transitory computer readable medium storing computer program instructions, executable by a processor to control a circuit to perform:
- detecting, by a detector, current supplied to an output of the circuit to generate an overcurrent signal;
- modulating, by a modulator, a pulse signal based upon the output of the circuit;
- controlling, by a switch, a power stage to generate the output of the circuit based upon the overcurrent signal and the pulse signal;
- and
- sending, by a stabilizer, an offset signal to the modulator,
- wherein the stabilizer generates the offset signal with a magnitude adjusted based upon the overcurrent signal, and the modulator adjusts the pulse signal based upon the offset signal.
Dependencies are inferred from the claim text.