TW200425627A - DC power supply apparatus having intermediate voltage - Google Patents

Abstract

A kind of DC power supply apparatus having intermediate voltage for providing intermediate voltage and low voltage is disclosed in the present invention. The invented apparatus includes a power supply input unit, a rectification unit and a converting unit. After AC voltage is inputted from the power input unit to the rectification unit, a DC intermediate voltage is obtained through the rectification of the rectification unit. Another part of the DC intermediate voltage is the processed through the conversion unit such that the entire DC power supply apparatus not only can supply low voltage but also supply the intermediate voltage. Therefore, more flexibility and efficiency can be obtained on the power supply for the information appliance of the PC age.

Description

200425627 V. Description of the invention (1) '~-[Technical Field of the Invention] The present invention relates to a power supply device with a medium voltage DC, especially a method that not only provides low voltage power, but also provides medium voltage power. Power supply device can save power consumption and improve the efficiency of power supply device. [Previous technology] General PC power supply is mainly to provide multiple sets of low-waste DC. However, in the era of PC information appliances, the low voltage of the PC architecture is extended. DC power supplies will lose their efficiency and flexibility. At present, everyone ’s favorite information. In addition to various electronic circuit designs in telecommunication appliances such as plasma TVs and LCD displays, the only power supply device that supplies power to information appliances is low-voltage power supply. As shown in the figure, the lamps used in the backlight panel of the liquid crystal display are cold cathode fluorescent lamps (CCFL), and the cold cathode fluorescent lamps require a high voltage (up to several hundred to kilovolts) to drive . The traditional design is to obtain large watts of energy from the 12 V (5 V) low-voltage side of the conversion unit (the number of lamps used in large LCDs is as high as 20 to 30). Watts of low-voltage power supply modules 'but these power-supply terminals obtained from low-voltage power supply modules' have to go through a low-efficiency medium-voltage (DC 1 50 ~ 300 V) to low-voltage DC-to-DC conversion unit, and then The booster unit composed of the inverter is used for processing, and the processed high voltage can drive the lamp tube to light up the backlight panel of the liquid crystal display screen. As a result, the power consumption of the information appliance power supply device is quite large, and the performance cannot be improved. [Summary of the Invention]

200425627 V. Description of the invention (2) The main purpose of the present invention is to solve the above-mentioned traditional defects and to avoid the existence of the defects. Power supply, more direct medium voltage power supply, makes information appliances in the PC era more flexible and efficient in power supply. In order to achieve the above-mentioned object, the integrated information appliance power supply device of the present invention includes: a power input unit, a rectifier unit, and a conversion unit. A medium voltage DC voltage is rectified, and the other part of the medium voltage DC voltage can be processed by the conversion unit to complete the whole power supply device. In addition to the low voltage power supply, it also has the effect of medium voltage power supply. [Embodiment] The detailed content and technical description of the present invention are described below with reference to the drawings: Please refer to "shown in Figure 2", which is a schematic block diagram of a circuit of a power supply device with a medium voltage DC according to the present invention. As shown in the figure: The power supply device with medium voltage DC according to the present invention includes: a power input unit 1, a rectifier unit 2, and a conversion unit 3, which are directly drawn from the output end of the rectifier unit 2. The medium-voltage DC voltage breaks through the traditional power supply device that only provides a low-voltage design, so that the user has greater flexibility in transportation; at the same time, it can achieve the purpose of saving consumption and improving efficiency. The power input unit 1 mentioned above is to provide an AC voltage of 110 ~ 220V; the rectifier unit 2 has an input terminal for inputting the AC power

Page 5 200425627 V. Description of the invention (3) 2 1 This rectifier unit 2 will output a DC voltage of 3 0 0 DCV {the first and second units of unit 2 output the conversion unit 3, which is connected to 2 3 for The rectification unit forms a low-voltage DC voltage (such as ± to provide the above power input unit 2 where other circuits of the device are located, the rectification unit 2 will supply power (150DCV ~ 300DCV) to the conversion unit 3, so that the entire DC power supply device does not The voltage power supply makes the performance and efficiency in the PC era. The flooded power supply is rectified into a medium voltage of about 150DCV ~ 'The rectified DC voltage is output by the rectifier 2 2 and 2 3 respectively; the second output terminal of the above rectifier unit 2 The medium-voltage DC voltage output from Yuan 2 is converted to 5V, ± 12V, ± 24V, etc.) 3 1 Low DC power required for output; 1 Provide an AC power input to the rectifier to rectify the AC power into a medium-voltage DC wheel. A part of the medium voltage DC voltage is converted into a low voltage DC voltage output. 3 1 Only only low voltage power supply, more direct information appliances are more flexible in power supply. Please refer to "shown in Figure 3". A schematic view of another embodiment of Ming embodiment. As shown in the figure: the rectifier unit 2 used in the integrated information appliance power supply device of the present invention rectifies the AC voltage into a medium-voltage DC voltage output. Rectification, or a pre-regulation method to convert AC voltage to a medium voltage DC voltage output. At the same time, a switching unit 4 is connected between the half-wave or full-wave bridge rectifier. This switching unit 4 can be either mechanical or electronic. A switch is formed. When the rectifier unit 2 has to be a half-wave or full-wave bridge rectifier, it can be switched through this switching unit 4.

200425627 V. Description of the invention (4) Please refer to "shown in Fig. 4", which is a schematic diagram of still another embodiment of the present invention. As shown in the figure: the rectifier unit 2 used in the integrated information appliance power supply device of the present invention can use at least one capacitor and a half-wave formed by a two-pole 'body', or a full-wave doubler unit 5 The input AC voltage is doubled to produce a medium voltage DC voltage output. Further, the conversion units 3 used in the present invention may be composed of multiple groups, single groups, or any one of positive and negative power supply modes. The above are merely preferred embodiments of the present invention, and are not intended to limit the scope of implementation of the present invention. That is, all equal changes and modifications made in accordance with the scope of patent application for the present invention are covered by the scope of patent for the present invention.

Page 7 200425627 Brief description of the drawings [Simplified description of the drawings] Fig. 1 is a schematic block diagram of a conventional integrated information appliance power supply device circuit. ○ Fig. 2 is a schematic block diagram of the power supply device with a medium voltage DC according to the present invention. FIG. 3 is a schematic diagram of another embodiment of the present invention. FIG. 4 is a schematic diagram of still another embodiment of the present invention. Power input unit ........ 1 Rectifier unit ..... 2 Input terminal ............ · ......twenty one

First output ..... 22 Second output ........ 23 Conversion f it ... ......... 3 Low voltage DC voltage ... 31 Switching unit ... 4 Voltage doubler ... ........... 5

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Claims (1)

200425627 6. Scope of patent application [Scope of patent application] \ 1. A power supply device with medium voltage DC for rectifying a medium voltage DC voltage output. This device includes: 'A power input unit for An AC voltage is input;-A rectifier unit is connected to the above-mentioned power input terminal to rectify the AC-mains voltage into a medium-voltage DC voltage output; through the above-mentioned power supply device, not only the low-voltage power supply, but also the direct The medium voltage power supply makes the information appliances in the pc era more flexible and efficient in power supply. 2. The power supply device with medium voltage DC as described in item 1 of the scope of patent application, wherein the medium voltage DC voltage is about 150DCV ~ 300DCV Lu 03, as described in item 1 of the scope of patent application It has a medium-voltage direct current power supply device, wherein the rectifier unit may be constructed by a half-wave bridge rectifier, a full-wave bridge rectifier, or a pre-regulation method. 4. The power supply device with medium voltage direct current as described in item 3 of the scope of patent application, wherein the half-wave or full-wave bridge rectifier is connected with all switching units. 5. The power supply device with medium voltage direct current as described in item 4 of the scope of patent application, wherein the switching unit may be constituted by any of a mechanical type and an electronic type switch. 6. The power supply device with medium voltage DC as described in item 1 of the scope of patent application, wherein the rectifier unit can use at least one capacitor and half wave formed by the diode or double the full wave Press the unit to enter the Page 9 200425627 6. Scope of patent application The AC voltage is doubled to a medium voltage DC voltage output. '7. The power supply device with medium voltage direct current as described in item 1 of the scope of the patent application, wherein there is a conversion unit that converts the medium voltage direct current voltage two into a low voltage output. ^ 8. The electric power & source supply device with medium voltage direct current as described in item 7 of the scope of patent application, wherein the conversion unit can be multiple groups, or a single group, or any form of positive or negative power supply. Constitute, Page 10