DC to DC transformer and control method for reducing overshooting phenomenon

A DC-to-DC converter technology, applied in the direction of converting DC power input to DC power output, control/regulation systems, output power conversion devices, etc., can solve problems such as poor stability of DC-DC converters
CN101483386AActive Publication Date: 2009-07-15ASUSTEK COMPUTER INC +1
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
ASUSTEK COMPUTER INC
Publication Date
2009-07-15

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Abstract

The present invention discloses a DC to DC converter, which comprises: a control circuit used for receiving and comparing DC output pressure, and outputs pulse wave width modulation signal of the first frequency when the DC output pressure no more than the first threshold voltage, and outputs pulse wave width modulation signal of the second frequency when the DC output pressure more than the first threshold voltage and the second frequency higher than the first frequency; a gate drive circuit used for receiving pulse wave width modulation signal and converting it into the first drive signal and the second drive signal; and a power stage circuit used for converting DC input pressure into DC output pressure according to the first drive signal and the second drive signal.
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Description

technical field

[0001] The present invention relates to a DC-to-DC converter, and more particularly to a DC-to-DC converter and a control method for reducing overshoot. Background technique

[0002] As is well known, a DC-to-DC converter (DC-to-DC converter) can convert a DC input voltage (DC input voltage) into a DC output voltage (DC output voltage) of different magnitudes.

[0003] Please refer to figure 1 , which is a schematic diagram of a known DC-to-DC converter. The DC-to-DC converter includes a control circuit 10 , a gate driver 20 , and a power stage 30 . Generally speaking, the control circuit 10 can receive the DC output voltage (Vout) generated by the power stage circuit 30, and generate a corresponding pulse width modulation signal (pulse width modulation signal, hereinafter) according to the change of the DC output voltage (Vout). Referred to as PWM signal). Moreover, the gate drive circuit 20 receives the PWM signal and converts it into a first drive sign...

Claims

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