Compensation control circuit and control method of switching-type regulator and switching-type regulator

A compensation control and regulator technology, applied in the direction of adjusting electrical variables, control/regulation systems, instruments, etc., can solve problems such as slow response, low system bandwidth, poor system stability, etc., to achieve fast response and stability good sex effect

Pending Publication Date: 2022-03-15
JOULWATT TECH INC LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In the above control process, the rising slope and falling slope of the inductor current have a great impact on the stability of the system. For example, when the slope rises or falls slowly, the system is more sensitive to noise, resulting in unstable system stability. Well, the existing technology only reduces the impact of noise by superimposing a ra

Method used

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  • Compensation control circuit and control method of switching-type regulator and switching-type regulator
  • Compensation control circuit and control method of switching-type regulator and switching-type regulator
  • Compensation control circuit and control method of switching-type regulator and switching-type regulator

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[0038] A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention is not limited to these examples. The present invention encompasses any alternative, modifications, equivalents, and programs made in the spirit and scope of the invention.

[0039] In order to make the public a thorough understanding of the present invention, specific details will be described in detail in the preferred embodiments of the invention, and those skilled in the art can also be fully understood.

[0040] The present invention will be more specifically described with reference to the drawings in the following paragraphs. It should be noted that the figures are made in a simple form and are used in a non-precision ratio, which is intended to be convenient and clarifically to clarify the purposes of the embodiments of the present invention.

[0041] refer to image 3 The control circuit diagram of the first embodim...

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Abstract

The invention discloses a compensation control circuit and a compensation control method for a switch-type regulator and the switch-type regulator, and the compensation control circuit comprises the steps: detecting the conduction time information of a switch control signal of a switch tube, so as to achieve the compensation of the switch tube under the condition that the conduction time ratio meets a threshold value; the slope compensation signal is superposed at the rising stage of the inductive current or the slope compensation signal is superposed at the falling stage of the inductive current, so that the influence of noise on the system is reduced under the condition that the response speed of the system is not influenced when the conduction time is relatively long in the whole switching period, and the switching type regulator system which is high in response speed and good in stability is obtained.

Description

technical field [0001] The invention relates to the technical field of power electronics, and more specifically, relates to a compensation control circuit, a control method and a switching regulator of a switching regulator. Background technique [0002] In the control mode of switching power supply, the scheme of dual current control of peak current and valley current is often used in switching power supply, for example, as figure 1 As shown in the Buck switching power supply, the BUCK switching power supply includes a first switching tube M00, a second switching tube M11 and an inductor L00, wherein the first switching tube M00 and the second switching tube M11 are both MOS tubes, and Vin is a BUCK switch The input voltage of the power supply, Vout is the output voltage of the BUCK switching power supply. During the working process, when the first switch tube M00 is turned on, the current of the inductor L00 rises; when the first switch tube M00 is turned off, and the seco...

Claims

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Application Information

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IPC IPC(8): H02M3/158H02M1/08H02M1/088
CPCH02M3/158H02M1/08H02M1/088
Inventor 窦训金黄必亮
Owner JOULWATT TECH INC LTD
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