Power supply and control method thereof

A control method and power supply technology, applied in data processing power supply, electrical digital data processing, instruments, etc., can solve the problems of audio noise, voltage identification code VID change cycle uncontrollable, falling into the audio range, etc., to eliminate audio noise Effect

Active Publication Date: 2017-03-22
CHENGDU MONOLITHIC POWER SYST
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, since the change period of the voltage identification code VID is uncontrollable, the change period of the current Icap flowing through the capacitor C1 may fall into the audio frequency range, thereby causing audio noise

Method used

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  • Power supply and control method thereof
  • Power supply and control method thereof
  • Power supply and control method thereof

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Embodiment Construction

[0017] 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.

[0018] 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 invention discloses a power supply and a control method thereof. The power supply comprises a voltage regulator which converts input voltage into output voltage according to reference voltage. The control method comprises the following steps of: receiving a voltage identification code emitted from a processor; when the voltage identification code emitted from the processor is kept constant in first preset duration, providing a variational independent voltage identification code; responding to the sum of the voltage identification code emitted from the processor and the independent voltage identification code, and providing reference voltage; and according to the reference voltage, regulating the output voltage.

Description

technical field [0001] Embodiments of the present invention relate to an electronic circuit, and more specifically, to a power supply and a control method thereof. Background technique [0002] In a computer system, the working voltage of a central processing unit (CPU) needs to change with the change of its working mode, and the voltage regulator is used to provide an output voltage to power the central processing unit. The voltage regulator receives a voltage identification code (voltage identification code) sent by the central processing unit, and adjusts the output voltage according to the voltage identification code sent by the central processing unit, so as to meet the output voltage requirements of the central processing unit in different working modes. [0003] figure 1 It is a block diagram 100 of an existing power supply for a central processing unit. The central processing unit 21 sends the voltage identification code VID to the voltage regulator 20 , and the vo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F1/26
CPCG06F1/26G06F1/266G06F1/28
Inventor 罗苏华欧阳茜姜礼节马朋朋吴小康
Owner CHENGDU MONOLITHIC POWER SYST
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