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Memory voltage generating circuit

A technology of voltage generating circuit and memory, which is applied in data processing power supply, measuring device, measuring flow/mass flow, etc. It can solve the problems of incompatibility with DDRII1.8V memory and the inability to replace memory at any time.

Inactive Publication Date: 2008-09-17
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The memory voltage generating circuit 10 can only supply DDRI 2.5V memory and is not compatible with DDRII 1.8V memory. If the DDRII 1.8V memory is replaced, the resistance R in the voltage divider module 14 needs to be changed. 1 , R 2 and R 3 To change the output voltage, the resistance of the two types of memory cannot be replaced at any time

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Embodiment Construction

[0015] Please refer to FIG. 2 , the memory voltage generating circuit 20 according to the preferred embodiment of the present invention includes a control module 22 , a voltage dividing module 24 , a voltage stabilizing output module 26 and a conversion control module 28 . The control module 22 is connected to the voltage dividing module 24 to control the voltage output of the voltage dividing module 24, and the voltage dividing module 24 is connected to the voltage stabilizing output module 26 to provide an input voltage for the voltage stabilizing output module 26. The conversion control module 28 is connected to the voltage divider module 24 to control the voltage value output by the voltage divider module 24 , thereby controlling the output voltage of the voltage stabilized output module 26 .

[0016] Referring to FIG. 3, the control module 22 includes a triode Q 22 . The voltage divider module 24 includes a resistor R 21 and R 22 . The voltage stabilizing output modul...

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Abstract

A voltage generating unit of internal memory is prepared as connecting control module to voltage division module for controlling voltage output of voltage division module, connecting voltage division module to voltage stabilized output module for providing input voltage to voltage stabilized output module, connecting conversion control module to voltage division module for controlling output voltage value of voltage division module so as to control output voltage of voltage stabilized output module.

Description

【Technical field】 [0001] The invention relates to a voltage generating circuit, in particular to a memory voltage generating circuit applied to a computer motherboard. 【Background technique】 [0002] The internal power supply of the computer is divided into three types: system power supply, backup power supply and dual-mode power supply. When the main power supply of the system is working, the system power supply and the backup power supply work; when the main power supply of the system is off, for example, in the standby state, the system power supply has no voltage output, and the backup power supply still works. The dual-mode power supply includes the system power supply and the backup power supply. There is a voltage output in all cases. [0003] Referring to Fig. 1, it is a circuit diagram of an existing memory voltage generation circuit, the memory voltage generation circuit 10 includes a control module 12, a voltage divider module 14 and a voltage stabilizing output ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F1/26
Inventor 黄永兆
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD