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Multiphase switching converter and controller and control method thereof

A multi-phase switch and converter technology, which is applied in the direction of converting DC power input to DC power output, output power conversion devices, electrical components, etc., can solve the problems of switching off and unstable operation of switching converters

Active Publication Date: 2015-07-15
CHENGDU MONOLITHIC POWER SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The operating temperature of each phase switching circuit in a multi-phase switching converter should be equal, any overheating operation of any one phase switching circuit will make the operation of the switching converter unstable, and even cause the entire switching converter to be shut down

Method used

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  • Multiphase switching converter and controller and control method thereof
  • Multiphase switching converter and controller and control method thereof
  • Multiphase switching converter and controller and control method thereof

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Embodiment Construction

[0016] 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.

[0017] 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

Controller with thermal balance and method thereof for controlling a multi-phase switching converter with a plurality of switching circuits. The controller having a bias current generator that generates a plurality of bias current signals; a temperature balance modulating circuit that generates a plurality of on time signals based on the plurality of the bias current signals; and a logic circuit that generates a plurality of control signals based on the plurality of on time signals. The plurality of the control signals is used to control the plurality of switching circuits of the multi-phase switching converter.

Description

technical field [0001] Embodiments of the present invention relate to electronic circuits, and in particular to a multi-phase switching converter with thermal balance function and its controller and control method. Background technique [0002] With its superior performance, multi-phase switching converters are widely used in solutions for high-performance CPU power supplies. The operating temperature of each phase switching circuit in a multi-phase switching converter should be equal. Overheating of any one phase switching circuit will make the operation of the switching converter unstable, and even cause the entire switching converter to be shut down. [0003] Generally, the multi-phase switching converter achieves the effect of temperature equalization by equalizing the output currents of the switching circuits of each phase. Ideally, when the output current of each phase switching circuit is equal, its power loss and its temperature rise should also be equal. However, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M1/00
CPCH02M3/1584H02M2001/327H02M1/327
Inventor 欧阳茜
Owner CHENGDU MONOLITHIC POWER SYST