Control circuit and method for a DC-to-DC converter to improve transient response thereof
AssigneeRichtek Technology Corporation
InventorsJiun-Chiang Chen, Liang-Pin Tai
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Abstract
For a DC-to-DC converter including a plurality of channels for converting an input voltage to an output voltage, a control circuit comprises a load transient detector to detect the output voltage to provide a quick response signal. In a load transient, the quick response signal triggers a quick transient response period to increase the operational frequency of the converter.
Claims8
A control circuit for a DC-to-DC converter including a plurality of channels for converting an input voltage to an output voltage, the control circuit comprising:
- an oscillator for providing a clock to determine an operation frequency of said converter;
- and
- a load transient detector for detecting said output voltage to generate a quick response signal to trigger a quick transient response period in response to a load transient, in which period said clock oscillates more quickly.
A control method for a DC-to-DC converter including a plurality of channels for converting an input voltage to an output voltage, the control method comprising the steps of:
- detecting said output voltage for triggering a quick transient response period in response to a load transient;
- increasing an operational frequency of said converter during said quick transient response period.
Dependencies are inferred from the claim text.