Switching Regulator
AssigneeRohm Co., Ltd.
InventorTsutomu Ishino
Life of this patent
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Abstract
A switching regulator according to the invention includes a resistor (R3) and a capacitor (C3) for generating a ramp signal from the AC component in the output of a hysteresis comparator (1). The switching regulator is characterized in that the hysteresis comparator (1) compares with a reference voltage outputted from a reference voltage source (2) a voltage obtained by superimposing the ramp signal on the divided voltage of the output voltage (VO) as obtained between resistors (R1 and R2).
Claims10
A switching circuit for a switching regulator, the switching circuit comprising:
- a hysteresis comparator;
- a switching element switched based on an output of the hysteresis comparator;
- a first terminal outputting a signal corresponding to switching operation of the switching element;
- a second terminal receiving an output voltage of the switching regulator;
- and
- a resistor and a capacitor generating a ramp signal from an alternating-current component in the output of the hysteresis comparator,
- wherein the hysteresis comparator compares with a reference voltage a voltage obtained by superimposing the ramp voltage on a voltage based on the output voltage of the switching regulator.
A switching regulator that switches a switching element based on an output of a hysteresis comparator, the switching regulator comprising:
- a resistor and a capacitor generating a ramp signal from an alternating-current component in the output of the hysteresis comparator,
- wherein the hysteresis comparator compares with a reference voltage a voltage obtained by superimposing the ramp voltage on a voltage based on an output voltage of the switching regulator.
An electrical device including a switching regulator,
- wherein the switching regulator switches a switching element based on an output of a hysteresis comparator,
- the switching regulator comprises a resistor and a capacitor generating a ramp signal from an alternating-current component in the output of the hysteresis comparator, and
- the hysteresis comparator compares with a reference voltage a voltage obtained by superimposing the ramp voltage on a voltage based on the output voltage of the switching regulator.
Dependencies are inferred from the claim text.