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Control circuit, control method and voltage regulator

A voltage regulator and control circuit technology, applied in control/regulating systems, regulating electrical variables, instruments, etc., can solve the problems of high circuit cost, narrow application scope, and many voltage regulator devices, and achieve simplified circuit design and savings. Application cost and effect of broadening application occasions

Pending Publication Date: 2021-07-23
SILERGY SEMICON TECH (HANGZHOU) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in this multi-phase interleaving control method, on the one hand, the overall voltage regulator requires a large number of components, resulting in high circuit costs; The device is difficult to expand to any corresponding application, narrowing the scope of application

Method used

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  • Control circuit, control method and voltage regulator
  • Control circuit, control method and voltage regulator
  • Control circuit, control method and voltage regulator

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Embodiment Construction

[0055] The present invention is described below based on examples, but the present invention is not limited to these examples. In the following detailed description of the invention, some specific details are set forth in detail. The present invention can be fully understood by those skilled in the art without the description of these detailed parts. In order not to obscure the essence of the present invention, well-known methods, procedures, procedures, components and circuits have not been described in detail.

[0056] Additionally, those of ordinary skill in the art will appreciate that the drawings provided herein are for illustrative purposes and are not necessarily drawn to scale.

[0057] Meanwhile, it should be understood that in the following description, "circuit" refers to a conductive loop formed by at least one element or sub-circuit through electrical connection or electromagnetic connection. When an element or circuit is said to be "connected to" another eleme...

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Abstract

The invention discloses a control circuit, a control method and a voltage regulator. According to the technical scheme provided by the embodiment of the invention, N multi-phase power converters in a voltage regulator are connected in parallel in a staggered manner, and the M-phase power level circuits in each multi-phase power converter are controlled to be connected in parallel in a staggered manner, so that the scheme can be expanded to an N*M-phase application occasion, multi-phase staggered control is effectively realized, and output voltage ripples are reduced.

Description

technical field [0001] The invention relates to power electronics technology, in particular to a control circuit, a control method and a voltage regulator. Background technique [0002] Voltage regulators are widely used in electronic products such as smart chips and CPUs because of their advantages such as low voltage, high current, and fast load transient response. In order to improve the load transient response speed and meet the demand of large current, most current voltage regulators use multi-phase step-down converters, and at the same time adopt the fixed on-time control method to realize the multi-phase interleaved control of multi-phase step-down converters . In order to realize multi-phase interleaving control, in the prior art, a voltage regulator provides a trigger signal of a predetermined phase to each phase of the power stage circuit, so as to control the switching cycle of the corresponding phase power stage circuit. [0003] However, in this multi-phase in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/158
CPCH02M3/1584H02M3/1586H02M1/14
Inventor 萧胜富刘家旗刘礼文赵晨
Owner SILERGY SEMICON TECH (HANGZHOU) CO LTD