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Multiphase voltage regulator on motherboard

A regulator, phase voltage technology, applied to logic circuits using specific components, logic circuits using basic logic circuit components, data processing power supplies, etc. problem, to achieve the effect of low ripple current and high efficiency

Active Publication Date: 2010-12-08
ASUSTEK COMPUTER INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, overvoltage or overfrequency control under the condition that the number of phases of the voltage regulator cannot be increased may cause the efficiency of the voltage regulator to decrease, the power stage circuit to generate excessive heat, the power transistor to burn out, or the output capacitor to be damaged. occur

Method used

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  • Multiphase voltage regulator on motherboard
  • Multiphase voltage regulator on motherboard
  • Multiphase voltage regulator on motherboard

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Embodiment Construction

[0042] The present invention extends the known PWM control unit with a fixed number of pulse signals to more pulse signals so that a voltage regulator with more phases can be achieved on the motherboard. Taking the PWM control unit providing N pulse signals as an example, M pulse signals can be generated by using the pulse signal extending circuit (PWM extending circuit) of the present invention. Among them, M=N*2 K , and K is a positive integer.

[0043] Please refer to image 3 , which is a multi-phase voltage regulator on the computer motherboard of the present invention. Taking N=4 and K=1 as an example, the pulse signal expansion circuit of the present invention can increase the PWM control unit providing four pulse signals to eight pulse signals, and achieve an eight-phase voltage regulator on the motherboard.

[0044] The multi-phase voltage regulator of the present invention uses a PWM control unit that generates four pulse signals to expand the pulse signals. The ...

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Abstract

The invention discloses a multi-phase voltage regulator on a main board, comprising a pulse width modulation control unit which generates N pulse signals within a first time period; a pulse signal extension circuit which receives the N pulse signals and generates M pulse signals, furthermore, M is equal to 2<K> multiplied by N; wherein, K is a positive integer; the pulse signal extension circuit generates M pulse signals within a second time period; furthermore, the second time period is 2<K> times of the first time period; M currents provide paths, receive corresponding M pulse signals and generate M corresponding sensing voltages; a feedback signal switching circuit which receives the M sensing voltages and sequentially switches the M sensing voltages to N sensing voltages, and transmits the N sensing voltages back to the pulse width modulation control unit.

Description

technical field [0001] The invention relates to a voltage regulator on a mainboard, and in particular to a multi-phase voltage regulator on a mainboard. Background technique [0002] Generally, there is a power supply in the computer system, and the power supply can provide a stable DC voltage, such as 12V or 5V, to the computer system so that the computer system can operate. However, since the core voltage (core voltage, Vcore) of the central processing unit (CPU) is not the same as the DC voltage provided by the power supply, a voltage regulator (voltage regulator) must be additionally provided on the motherboard of the computer system. , VR) steps down a high DC voltage (eg 12V) to become the core voltage (Vcore) (eg 1.3V) of a central processing unit (CPU). This type of voltage regulator can also be called a buck DC / DC converter. [0003] Please refer to figure 1 , which is a single-phase voltage regulator on a known computer motherboard. The single-phase voltage reg...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F1/26H03K19/173H02M3/10
Inventor 彭志勇许志琬黄农哲吴宜林
Owner ASUSTEK COMPUTER INC
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