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South bridge chip power supply circuit

A technology of south bridge chip and power supply circuit, which is applied in the field of power supply circuit for south bridge chip, which can solve the problems of power failure, large ripple voltage and delay of south bridge chip, and achieve the effect of ensuring the output of power supply voltage

Inactive Publication Date: 2010-12-29
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

The response speed of the traditional south bridge chip power supply circuit is slow, and a large ripple voltage is generated during the power supply process, so the power failure and delay of the south bridge chip will occur in the process of waking up the system, resulting in the system not being able to wake up in time

Method used

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  • South bridge chip power supply circuit
  • South bridge chip power supply circuit
  • South bridge chip power supply circuit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] Please also refer to figure 1 with figure 2 , The south bridge chip power supply circuit of the present invention includes a voltage conversion chip 100 , a control circuit 200 , a filter circuit 300 and a south bridge chip 400 . The voltage converting chip 100 includes a first voltage input terminal 101 , a second voltage input terminal 102 , a driving voltage output terminal 103 and a gate voltage output terminal 104 . The control circuit 200 includes a first control terminal, a second control terminal and an output terminal. The first voltage input terminal 101 and the second voltage input terminal 102 of the voltage conversion chip 100 respectively receive a +5V standby voltage and a +12V main output voltage from a power supply (not shown in the figure), and are connected at the drive voltage output terminal 103 and the gate voltage output terminal 104 respectively output a driving voltage. The first control terminal and the second control terminal of the contro...

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PUM

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Abstract

The invention discloses a south bridge chip power supply circuit, which comprises a voltage conversion chip, a control circuit, a filter circuit and a south bridge chip. The voltage conversion chip comprises a first voltage input end, a second voltage input end, a driving voltage output end and a gate voltage output end, wherein the first voltage input end and the second voltage input end of the voltage conversion chip receives a first voltage and a second voltage from a power supplier respectively and drive the driving voltage output end and the gate voltage output end to output a driving voltage respectively. The control circuit comprises a first control end, a second control end and an output end, wherein the first control end the second control end of the control circuit receives the corresponding driving voltages respectively and output a third voltage through the output end to supply power to the south bridge chip through the filter circuit.

Description

technical field [0001] The invention relates to a power supply circuit, in particular to a circuit for supplying power to a south bridge chip. Background technique [0002] According to the ACPI (Advanced Configuration and Power Interface, Advanced Configuration and Power Interface) specification, the computer power management system can divide the working state of the computer into S0 to S5, and the meanings they represent are: [0003] S0: The computer works normally, and all hardware devices are turned on or working normally; [0004] S1: Also known as POS (Power on Suspend, CPU stops working), other hardware devices still work normally; [0005] S2: Turn off the CPU, but the rest of the hardware devices are still running; [0006] S3: Usually called STR (Suspend to RAM, suspend to memory), write the running data into the memory and turn off the hard disk; [0007] S4: Also known as STD (Suspend to Disk, suspend to hard disk), the memory information is written to the h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F1/26G06F1/32
CPCH03K17/22
Inventor 胡可友
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD