Load transient sensing circuit for a power converter
OwnerQian Ouyanginventor
Life of this patent
Estimating the term…
Abstract
The present invention provides a circuit for sensing a load transient of a power converter. The circuit comprises an input terminal coupled to the voltage output terminal of the power converter through a resistor. The circuit further comprises a comparator for comparing an input voltage with a reference voltage to generate a load transient signal to control output voltage parameters of the power converter. The circuit has a simple circuit structure and can promptly sense the load transient of the power converter to thereby control various output parameters.
Claims13
A load transient sensing circuit for a power converter, comprising:
- an input terminal coupled to the output terminal of said power converter through a resistor;
- and
- at least one comparator for comparing the voltage of said input terminal with at least one reference voltage to generate at least one load transient signal for controlling the parameters of the output voltage of said power converter.
An overshoot eliminating device for a Buck power converter having at least one high-side switch and at least one low-side switch, comprising:
- a load transient sensing circuit comprising:
- an input terminal coupled to the output terminal of said power converter through a resistor;
- and
- at least one comparator for comparing the voltage of said input terminal with at least one reference voltage to generate at least one load transient signal for controlling the parameters of the output voltage of said power converter;
- and
- an auxiliary control circuit for receiving said at least one load transient signal of said load transient sensing circuit so as to turn on said at least one high-side switch and to turn off said at least one low-side switch for a period of time when said auxiliary control circuit receives the high-level load step-up transient signal and to turn off said at least one high-side switch and at least one low-side switch when said auxiliary control circuit receives the high-level load step-down transient signal.
Dependencies are inferred from the claim text.