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Switching converter circuit with preprocessing function and method thereof

A switching converter and preprocessing technology, which is applied in the direction of output power conversion device, DC power input conversion to DC power output, electrical components, etc., can solve the problems of poor transient characteristics and achieve the effect of improving transient characteristics

Active Publication Date: 2014-11-26
CHENGDU MONOLITHIC POWER SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem of poor transient characteristics in the existing PWM mode switching converter circuit, thereby proposing a PWM mode switching converter with predictive function

Method used

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  • Switching converter circuit with preprocessing function and method thereof
  • Switching converter circuit with preprocessing function and method thereof
  • Switching converter circuit with preprocessing function and method thereof

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Embodiment Construction

[0025] Specific embodiments of the present invention will be described in detail below, and it should be noted that the embodiments described here are only for illustration, not for limiting the present invention. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one of ordinary skill in the art that these specific details need not be employed to practice the present invention. In other instances, well-known circuits, materials or methods have not been described in detail in order to avoid obscuring the present invention.

[0026] Throughout this specification, reference to "one embodiment," "an embodiment," "an example," or "example" means that a particular feature, structure, or characteristic described in connection with the embodiment or example is included in the present invention. In at least one embodiment. Thus, appearances of the phrases "in on...

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Abstract

The present technology discloses a switching mode power supply with predicted PWM control. In one embodiment, the switching mode power supply monitors the slew rate of COMP signal which represents the output voltage of the switching mode power supply. When the load steps up, the ON state of the power stage is prolonged; when the load steps down, the power stage is turned off earlier.

Description

technical field [0001] Embodiments of the present invention relate to a PWM (Pulse Width Modulation) mode controlled switching converter circuit, in particular to a switching converter circuit with a pre-processing function. Embodiments of the invention also relate to methods of implementing preconditioning control. Background technique [0002] Switching converter circuits have been widely used because of their smaller size and higher work efficiency. A typical switching converter circuit usually adopts PWM mode control. In the traditional PWM mode, the feedback signal reflecting the output voltage and a reference value are input into the error amplifier to obtain an error amplification signal, and the PWM control signal is generated based on the value of the error amplification signal. [0003] figure 1 It is a circuit block diagram of an existing PWM control loop 100 . It can be seen from the figure that the PWM control loop 100 includes: an output stage 101 for recei...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M1/00
CPCH02M2003/1566H02M3/156H02M3/1566
Inventor 盛洪刚张加欣
Owner CHENGDU MONOLITHIC POWER SYST