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Switching converter circuit and method thereof

A technology of switch conversion circuit and power switch, which is applied in the direction of emergency protection circuit devices, electrical components, output power conversion devices, etc., can solve the problems of increasing system cost and complicating external circuits, and achieve the effect of simplifying circuits

Active Publication Date: 2017-07-18
CHENGDU MONOLITHIC POWER SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The auxiliary winding / external components on the output side add to the system cost and complicate the external circuitry

Method used

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  • Switching converter circuit and method thereof
  • Switching converter circuit and method thereof
  • Switching converter circuit and method thereof

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Embodiment Construction

[0015] 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.

[0016] 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 application discloses a switching conversion circuit and a method. The switching conversion circuit includes: an input port, an output port, a power converter, an envelope unit, a reference wave node, a charging current source, a charging capacitor, a reset switch, an overvoltage comparator and a controller. The switching converter circuit greatly simplifies overvoltage detection.

Description

technical field [0001] The present invention relates to an electronic circuit, and more specifically, the present invention relates to a switching converter circuit and a method thereof. Background technique [0002] In switching converter circuits, overvoltage protection is a basic requirement. So that when the output voltage is too high, the components in the circuit can be effectively protected from being burned out. Therefore, in the switching converter circuit, it is necessary to detect the output voltage. But when the reference ground of the output (load) is different from that of the control chip, an auxiliary winding or external components on the output side are usually required to detect the output voltage. This auxiliary winding / external component on the output side adds to system cost and complicates the external circuitry. Contents of the invention [0003] Therefore, the object of the present invention is to solve the above-mentioned technical problems of t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02H7/10
CPCH02M1/32
Inventor 邝乃兴
Owner CHENGDU MONOLITHIC POWER SYST