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Multi-extended constant on-time controlled multi-phase power supply and control method

A technology of constant on-time and control method, applied in control/regulation systems, output power conversion devices, conversion of DC power input to DC power output, etc., can solve problems such as increasing the cost and complexity of multi-phase power supplies

Active Publication Date: 2018-01-09
CHENGDU MONOLITHIC POWER SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, a dedicated controller will add cost and complexity to the multiphase power supply

Method used

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  • Multi-extended constant on-time controlled multi-phase power supply and control method
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  • Multi-extended constant on-time controlled multi-phase power supply and control method

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Embodiment Construction

[0019] The content of the invention of the present application will be described in detail below according to multiple embodiments. While applicants have detailed various embodiments of the invention, these are not intended to limit the scope of the invention. On the contrary, anyone familiar with this technology can make further improvements and changes on this basis without departing from the spirit and scope of the present invention. Therefore, the scope defined in the application should be defined by the claims of the application, including all alternative embodiments, modified embodiments and equivalent embodiments related to the application. In addition, in the following specific description of the present application, the applicant describes a large number of details in order to understand the content of the present invention more clearly. However, for those of ordinary skill in the art, the embodiments disclosed in this application can still be practiced without these...

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Abstract

The present invention discloses a multi-phase power supply comprising a plurality of COT controlled DC-DC converter integrated circuits. One of the COT-controlled DC-DC converter integrated circuits generates a synchronization signal and the other COT-controlled DC-DC converter integrated circuits receive the synchronization signal. At least two COT controlled DC-DC converter integrated circuits are turned on at the same time, and the conducting signals and the received synchronizing signals are synchronized with another synchronizing indicating signal (for example, synchronizing with the edgeof one pulse of the synchronizing signal). Among them, the synchronous indicating signal from a COT-controlled DC-DC converter integrated circuit sent to the next COT-controlled DC-DC converter IC inturns.

Description

technical field [0001] This invention relates to electronic circuits, and more particularly, but not exclusively, to multi-phase power supplies. Background technique [0002] DC-DC voltage converters are often used to convert an input voltage into an output voltage. When the DC-DC voltage converter is a BOOST topology, the output voltage is higher than the input voltage; when the DC-DC voltage converter is a BUCK topology , the output voltage is lower than the input voltage. A plurality of DC-DC converters can form a multi-phase power supply, and each DC-DC converter provides an output voltage in a different phase circuit. Typically, a dedicated Pulse Width Modulation (PWM) controller is required to synchronize the multiple DC-DC converters and generate an interleaved output voltage. However, a dedicated controller will add cost and complexity to the multiphase power supply. [0003] Therefore, there is a need to propose a simpler and more efficient DC-DC converter and po...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/158
CPCH02M1/36H02M3/158H02M1/0009H02M3/1586
Inventor 詹姆斯·尼古耶周景海
Owner CHENGDU MONOLITHIC POWER SYST