KR101068535B1 - System for Supplying Power - Google Patents

Abstract

The present invention converts one DC power supply voltage supplied from the power supply into a plurality of power supply voltages without additional power consumption and supplies them to each electronic module, thereby simplifying the hardware structure of the power supply and remarkably reducing the power consumption of the power supply. In providing a power supply system which can be reduced, the power supply system of the present invention comprises: voltage supply means for generating one first DC voltage; And a plurality of voltage adjusting means for generating a second DC voltage by converting the first DC voltage into DC / DC, and supplying the second DC voltage to each electronic module, wherein the plurality of voltage adjusting means are different from each other. It characterized in that to generate.

Voltage Regulator, Power Supply, Voltage

Description

Power Supply System {System for Supplying Power}

The present invention relates to a power supply system, and more particularly, to a power supply system that can be supplied to each electronic module by converting one DC power supply voltage supplied from the power supply into a plurality of power supply voltages without additional power consumption.

The present invention is derived from the research conducted as part of the IT new growth engine core technology development project of the Ministry of Information and Communication and the Ministry of Information and Communication Research and Development. [Task Management Number: 2007-S-016-01] Development].

In general, a computer includes components such as a CPU, a memory, a main board, and a graphics card, and the performance of the computer depends on the performance of these components. However, in order for each component of the computer to operate normally, a power supply is provided. Power must be supplied reliably from

A computer power supply supplies all the power needed for each part of the computer, so reliability is of paramount importance. Computers are often down for various reasons, such as computer operating systems or applications conflicting with each other, or hardware incompatibility, but failures are often caused by unstable power supply from the power supply.

In addition, as the performance of major components of the computer such as CPU, memory, and graphics card are upgraded and semiconductor density is increased, a lot of power is required in the computer, and the power supply of the computer is also increased in capacity. Accordingly, in the computer field, a low power concept is required to increase energy efficiency, but the power supply of the computer does not meet these energy requirements. Moreover, low power technology of a power supply device of a computer is not proposed in Korea, and such low power technology has been proposed in US Patent No. 10-2002-7000018.

However, since the preceding patent provides different voltages to each component with one power supply device, it has a complicated hardware structure, and when the new components are developed according to the improvement of the function of the computer, the hardware structure is further proportionately. There is a problem of becoming complicated. In addition, the power supply of the conventional computer has a problem in that it consumes a relatively large amount of power since it generates a plurality of power supply voltages using power supplied from the outside.

The present invention is to solve the above problems, an object of the present invention is to supply a power supply that can be supplied to each electronic module by converting one DC power supply voltage supplied from the power supply into a plurality of power supply voltages without a separate power consumption To provide a system.

Another object of the present invention is to provide a power supply system capable of simplifying the hardware structure of the power supply and significantly reducing the power consumption of the power supply by generating only one DC power supply voltage using the power supply.

Yet another object of the present invention is to convert a single DC power supply voltage supplied from the power supply into a plurality of power supply voltages and supply them to each electronic module, thereby supplying power without being affected by computer functions and components. To provide a supply system.

The power supply system according to the present invention for achieving the above object, the voltage supply means for generating one first DC voltage; And a plurality of voltage adjusting means for generating a second DC voltage by converting the first DC voltage into DC / DC, and supplying the second DC voltage to each electronic module, wherein the plurality of voltage adjusting means are different from each other. It characterized in that to generate.

The voltage adjusting device of the power supply system according to the present invention includes a control signal generator for generating first and second voltage conversion control signals; A DC / AC converter for converting one first DC voltage supplied from a voltage supply means into an AC voltage according to the first and second voltage conversion control signals; A transformer for transforming an AC voltage converted by the DC / AC converter; And an AC / DC converter converting the AC voltage transformed by the transformer into a second DC voltage and supplying the same to each electronic module.

Power supply system according to the present invention having the above configuration, by converting one DC power supply voltage supplied from the power supply to a plurality of power supply voltages without a separate power consumption to each electronic module, the hardware structure of the power supply It simplifies the power supply, significantly reduces the power supply's power consumption, and can power all computers without affecting the computer's features and components.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention.

1 is a block diagram of a power supply system according to an embodiment of the present invention.

Referring to FIG. 1, the power supply system 100 according to the present invention generates a DC power supply voltage 5V by receiving a power supply 110 supplying a DC power supply voltage 12V and a DC power supply voltage 12V. Receives a first voltage regulator (VRM) (120), a second voltage regulator 130 that receives a DC power supply voltage 12V and generates a DC power supply voltage 1.2V, and a DC power supply voltage 12V A third voltage adjusting device 140 for generating a DC power supply voltage of 3.3V is provided.

The first component group 210, the CPU 220, the memory 230, the second component group 240, and the like illustrated in FIG. 1 are main components of a computer to which the present invention is applied, and the power supply of the present invention is provided. The power supply voltage is supplied from the system 100. Here, the first component group 210 is composed of components using a DC power supply voltage of 5V, for example, CD ROM, HDD, FDD, I / O, and PCI card. The second component group 240 is composed of components using a DC power supply voltage of 12V, for example, a CD ROM, an HDD, a FAN, and the like. In addition, the CD ROM and the HDD of the computer generally use both DC power supply voltages of 5V and 12V.

The power supply 110 supplies one DC power supply voltage 12V to the first to third voltage regulators 120, 130 and 140, and also directly supplies a power supply voltage of 12V to the second component group 240 of the computer. do. Although the present invention discloses that the power supply 110 generates a DC power supply voltage of 12 V, the present invention is not limited thereto. The power supply 110 may have one power source other than 12 V according to a power supply voltage scheme used for a computer. It can be implemented to supply a voltage.

The first voltage regulator 120 converts the DC power supply voltage 12V supplied from the power supply 110 into direct current / direct current (DC / DC) to supply a DC power supply voltage of 5V to the first component group 210 of the computer. .

The second voltage adjusting device 130 converts the DC power supply voltage 12V supplied from the power supply 110 into DC / DC to supply the DC power supply voltage of 1.2V to the CPU 130 of the computer.

The third voltage regulating device 140 converts the DC power supply voltage 12V supplied from the power supply 110 into DC / DC and supplies the DC power supply voltage of 3.3V to the memory 230 of the computer.

The first to third voltage regulators 120, 130, and 140 may be implemented by a logic program or the like, or may be implemented in hardware as shown in FIG. In particular, the first to third voltage adjusting devices 120, 130, and 140 may be mounted in a daughter board form, an on-board form, or a socket form on the main board of the computer.

As described above, the power supply system according to the present invention converts a single DC power supply voltage supplied from the power supply into a plurality of power supply voltages without supplying power to each component of the computer, thereby providing a hardware structure of the power supply. It simplifies, significantly reduces the power supply's power consumption, and can power any computer without affecting its functionality and components.

FIG. 2 is a configuration diagram of a first embodiment of the first to third voltage regulating devices shown in FIG. 1.

Referring to FIG. 2, the first to third voltage adjusting devices 120, 130, and 140 according to the present invention may include a control signal generator 121 for generating first and second voltage conversion control signals, and The DC / AC converter 122 converts the DC power supply voltage 12V supplied from the power supply 110 into an AC voltage according to the first and second voltage conversion control signals, and is converted by the DC / AC converter 122. A transformer 123 for transforming an AC voltage and an AC / DC converter 124 for converting an AC voltage transformed by the transformer 123 into a DC power supply voltage are provided.

The control signal generator 121 generates first and second voltage conversion control signals for controlling the switching direction of the DC / AC converter 122 and simultaneously applies them to the DC / AC converter 122. Here, the first and second voltage conversion control signals are pulse width modulated signals PWM having a constant duty ratio, and have opposite logic levels. That is, while the high level first voltage conversion control signal is supplied to the DC / AC converter 122, the low level second voltage conversion control signal is supplied to the DC / AC converter 122, and conversely, The high voltage second voltage conversion control signal is supplied to the DC / AC converter 122 while the first voltage conversion control signal is supplied to the DC / AC converter 122. The logic levels of the first and second voltage conversion control signals are alternately converted according to a preset duty ratio.

The DC / AC converter 122 alternately converts the switching direction according to the first and second voltage conversion control signals supplied from the control signal generator 121 to convert the DC power supply voltage 12V from the power supply 110. Convert to AC voltage.

The DC / AC converter 122 may include first and second N MOSFETs (Field Effect Transistors (FT1, FT2)) in which ON / OFF is controlled by a first voltage conversion control signal. And third and fourth N-MOSFETs FT3 and FT4 whose ON / OFF is controlled by a second voltage conversion control signal, wherein the first to fourth N-MOSFETs FT1 and FT2 are provided. , FT3, FT4) is formed in the form of a bridge.

The first N MOSFET FT1 includes a drain to which the DC power supply voltage 12V supplied from the power supply 110 is applied, a gate to which the first control signal is applied from the control signal generator 121, and a first output node ( Has a source connected to N1). Here, the first output node N1 is connected to the transformer 123.

The second N MOSFET FT2 has a drain connected to the second output node N2, a gate to which the first control signal is applied from the control signal generator 121, and a source connected to ground. Here, the second output node N2 is connected to the transformer 123.

The third N MOSFET FT3 includes a drain to which the DC power supply voltage 12V supplied from the power supply 110 is applied, a gate to which the second control signal is applied from the control signal generator 121, and a second N MOSFET. It has a source commonly connected to the drain of (FT2) and the second output node N2.

The fourth N MOSFET FT4 is a drain connected in common to the source of the first N MOSFET FT1 and the first output node N1, and a gate to which the second control signal is applied from the control signal generator 121. And has a source connected to ground.

The transformer 123 has one end connected to the first output node N1 of the DC / AC converter 122 and the other end connected to the second output node N2 of the DC / AC converter 122. The primary side coil L1 and the secondary side coil L2 connected to the input terminal of the AC / DC converter 124 at both ends are provided. The transformer 123 transforms the AC voltage converted by the DC / AC converter 122 and outputs the converted AC voltage to the AC / DC converter 124. At this time, the magnitude of the transformed AC voltage is equal to the primary coil L1. It is determined by the turns ratio of the secondary coil L2. Substantially, the 12V voltage is transformed to 5V, 1.2V, or 3.3V in the transformer 123. The AC voltage thus transformed is converted into a DC power voltage by the AC / DC converter 124 and supplied to the corresponding component of the computer.

An operation process of the DC / AC converter 122 having such a circuit configuration will be described in detail with reference to FIGS. 3 and 4 as follows.

The high level first voltage conversion control signal is supplied to the gates of the first and second N MOSFETs FT1 and FT2, and the low level second voltage conversion control signal is supplied to the third and fourth N MOSFETs FT3. When supplied to the gate of FT4, the first and second N-MOSFETs FT1 and FT2 are simultaneously turned on and the third and fourth N-MOSFETs FT3 and FT4 are turned off, as shown in FIG. 3. The first N MOSFET FT1, the first output node N1, the primary coil L1 of the transformer 122, the second output node N2, and the second N MOSFET FT2 are sequentially passed. The path of the signal applied to ground is formed.

The low level first voltage conversion control signal is supplied to the gates of the first and second N MOSFETs FT1 and FT2, and the high level second voltage conversion control signal is supplied to the third and fourth N MOSFETs FT3. When supplied to the gate of FT4, the first and second N-MOSFETs FT1 and FT2 are simultaneously turned off and the third and fourth N-MOSFETs FT3 and FT4 are turned on, as shown in FIG. 4. The third N MOSFET FT1, the second output node N2, the primary coil L1 of the transformer 122, the first output node N1, and the fourth N MOSFET FT4 are sequentially passed. The path of the signal applied to ground is formed.

As described above, the switching direction of the DC / AC converter 122 is alternately changed by the first and second voltage conversion control signals, thereby converting the DC power supply voltage 12V from the power supply 110 into an AC voltage.

The first to third voltage regulators 120, 130, and 140 having such a circuit structure and function may be implemented to additionally have a voltage stabilization function. In this case, the first to third voltage regulators 120, 130 and 140 have a configuration as shown in FIG.

FIG. 5 is a configuration diagram of a second embodiment of the first to third voltage regulators shown in FIG. 1.

Referring to FIG. 5, the first to third voltage regulating devices 120, 130, and 140 are the same as in FIG. 2, respectively, in the control signal generator 121, the DC / AC converter 122, and the transformer ( 123, and an AC / DC converter 124, and may further include a variable resistor VR1, a voltage detector 125, and a voltage adjuster 126.

The voltage detector 125 detects a voltage output from the AC / DC converter 124 and supplied to each component of the computer and transmits the voltage to the voltage controller 126.

The voltage adjusting unit 126 compares the voltage detected by the voltage detecting unit 125 with a predetermined reference voltage to determine whether there is an abnormality in voltage supply. Here, if the detected voltage is equal to the predetermined reference voltage, the voltage adjusting unit 126 determines that the voltage supply is stable and maintains the resistance value of the variable resistor VR1. On the contrary, if the detected voltage is different from the predetermined reference voltage, the voltage adjusting unit 126 determines that the voltage supply is unstable and varies the resistance value of the variable resistor VR1 to supply a stable voltage.

As described above, when the voltage supplied to each component of the computer becomes unstable, the voltage supply system of the present invention detects such an unstable voltage and stabilizes it in real time, so that each component of the computer is supplied with an optimal voltage and is driven stably.

Meanwhile, in the present invention, the power supply system 100 is disclosed to include the first to third voltage adjusting device 140, but the technical idea of the present invention is to supply one power supply voltage supplied from the power supply 110. Since a plurality of power supply voltages are generated and supplied to each component of the computer, the voltage adjusting device of the present invention applied to the computer is not limited to three. That is, the number of voltage regulating devices of the present invention applied to a computer increases in proportion to the variety of power supply voltages used in the computer.

In addition, although the case where the power supply system according to the present invention is applied to a computer has been described as an example, the technical idea of the present invention may be applied to an electronic device having a plurality of electronic modules other than the computer.

1 is a block diagram of a power supply system of a computer according to an embodiment of the present invention.

FIG. 2 is a configuration diagram of a first embodiment of the first to third voltage regulators shown in FIG.

3 and 4 are views illustrating the operation of the first to third voltage regulating device according to the present invention.

5 is a configuration diagram of a second embodiment of the first to third voltage regulators shown in FIG.

Claims (12)

A power supply for generating one first DC voltage; And A plurality of voltage adjusting means mounted on a main board physically separated from the power supply and configured to generate different second DC voltages by converting the first DC voltages into DC / DCs and supply them to each electronic module; But Each of the plurality of voltage adjusting means, A control signal generator for generating first and second voltage conversion control signals; A DC / AC converter converting the first DC voltage into an AC voltage according to the first and second voltage conversion control signals; A transformer for transforming an AC voltage converted by the DC / AC converter; An AC / DC converter converting an AC voltage transformed by the transformer into the second DC voltage A variable resistor connected between the AC / DC converter and the electronic module; A voltage detector configured to detect a voltage output from the AC / DC converter and supplied to the electronic module; And A voltage adjusting unit comparing the voltage detected by the voltage detecting unit with a predetermined reference voltage and varying a resistance value of the variable resistor according to a comparison result Power supply system comprising a. delete The method of claim 1, wherein the first and second voltage conversion control signal, A pulse width modulated signal having a constant duty ratio, the power supply system characterized by having opposite logic levels. The method of claim 3, wherein And the logic levels of the first and second voltage conversion control signals are alternately converted. The method of claim 4, wherein the DC / AC converter, First and second N MOSFETs controlled on / off by the first voltage conversion control signal; And And third and fourth N MOSFETs controlled on / off by the second voltage conversion control signal. The first to fourth N MOSFET is a power supply system, characterized in that formed in the form of a bridge. delete The method of claim 1, wherein the voltage adjusting unit, And if the detected voltage is equal to the predetermined reference voltage, maintaining the resistance of the variable resistor. The method of claim 1, wherein the voltage adjusting unit, And if the detected voltage is different from the predetermined reference voltage, varying the resistance value of the variable resistor. In the voltage regulator of the power supply system physically separated from the power supply, A control signal generator for generating first and second voltage conversion control signals; A DC / AC converter converting a first DC voltage supplied from the power supply mounted on the main board into an AC voltage according to the first and second voltage conversion control signals; A transformer for transforming an AC voltage converted by the DC / AC converter; An AC / DC converter converting an AC voltage transformed by the transformer into a second DC voltage and supplying the same to each electronic module; A variable resistor connected between the AC / DC converter and the electronic module; A voltage detector detecting a voltage supplied from the AC / DC converter to the electronic module; And A voltage adjusting unit comparing the voltage detected by the voltage detecting unit with a predetermined reference voltage and varying a resistance value of the variable resistor according to a comparison result Voltage regulating device of the power supply system comprising a. The method of claim 9, And the logic levels of the first and second voltage conversion control signals are alternately converted. The method of claim 10, wherein the DC / AC converter, First and second N MOSFETs controlled on / off by the first voltage conversion control signal; And And third and fourth N MOSFETs controlled on / off by the second voltage conversion control signal. The first to fourth N MOSFET is a voltage regulator of the power supply system, characterized in that formed in the form of a bridge. delete

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