KR20010055864A - Switching circuit for control display power management mode - Google Patents

Switching circuit for control display power management mode Download PDF

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Publication number
KR20010055864A
KR20010055864A KR1019990057184A KR19990057184A KR20010055864A KR 20010055864 A KR20010055864 A KR 20010055864A KR 1019990057184 A KR1019990057184 A KR 1019990057184A KR 19990057184 A KR19990057184 A KR 19990057184A KR 20010055864 A KR20010055864 A KR 20010055864A
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South Korea
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dpm
power
power supply
winding
switching circuit
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KR1019990057184A
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Korean (ko)
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홍의성
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구자홍
엘지전자 주식회사
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Priority to KR1019990057184A priority Critical patent/KR20010055864A/en
Publication of KR20010055864A publication Critical patent/KR20010055864A/en

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
    • H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
    • H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
    • H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
    • H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/33569—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements
    • H02M3/33576—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements having at least one active switching element at the secondary side of an isolation transformer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Dc-Dc Converters (AREA)
  • Direct Current Feeding And Distribution (AREA)

Abstract

PURPOSE: A defensive power mode(DPM) control switching circuit is provided to control an output of a secondary side entire winding by composing a switch in the secondary side winding of an SMPS transformer for supplying a DPM control signal to the switch and turning on/off an AC power induced to a secondary side coil. CONSTITUTION: A SMPS transformer outputs power supply voltages(B1+,B2+,B3+) through each of output terminals(D1,C1)(D2,C2)(D3,C3) and outputs a standby voltage(5V) of a microcomputer through output terminals(D4,C4). A relay(RL1) switches both sides of a winding unit(LB) for outputting power supply voltages(B1+,B2+,B3+) and a winding unit(LS) for outputting a standby voltage of a microcomputer for turning on/off an AC power.

Description

전원절전모드（ＤＰＭ）제어 스위칭 회로{Switching circuit for control display power management mode}Switching circuit for control display power management mode

본 발명은 전원공급회로에 관한 것으로, 특히 전원절전모드(DPM) 제어신호에 따라 각 사용전원 전압(B+)을 공급 제어하기 위한 DPM 제어 스위칭 회로에 관한 것이다.The present invention relates to a power supply circuit, and more particularly, to a DPM control switching circuit for supplying and controlling each used power supply voltage (B +) according to a power saving mode (DPM) control signal.

스위칭 전원부는 기기의 각 부 소자의 동작에 필요한 사용전원(B+)을 공급하게 된다.The switching power supply unit supplies the used power (B +) necessary for the operation of each sub-element of the device.

이와 같은 스위칭 전원부에는 SMPS 트랜스가 구성되어, 2차측 각 부 권선비에 따른 출력 전압(B+)을 달리하여 회로 각부 소자의 사용전원 전압(B+)을 출력하도록 한다.An SMPS transformer is configured in the switching power supply unit to output the power supply voltage B + of each circuit element by varying the output voltage B + according to each secondary winding ratio of the secondary side.

도 1은 종래 DPM 제어 스위칭 회로를 나타낸 것으로,1 shows a conventional DPM control switching circuit,

도 1에 도시된 바와 같이, 종래 DPM 제어 스위칭 회로의 구성은 다음과 같다.As shown in FIG. 1, the configuration of the conventional DPM control switching circuit is as follows.

2차측 권선으로 유기되는 전압을 각 다이오드 및 콘덴서(D1,C1)(D2,C2) (D3,C3)로 구성되는 출력단 구성부위의 각 권선비에 따라 회로 각부의 사용 전원 전압(B+ 1,B+ 2,B+ 3)을 출력하는 SMPS 트랜스가 구성된다.The voltage induced in the secondary winding of each diode and a capacitor (D1, C1) (D2, C2) (D3, C3) the output configuration area for each turns ratio circuit parts using a power supply voltage (B + 1, of the consisting of B The SMPS transformer outputting + 2 , B + 3 ) is configured.

이때, 각 출력단(D1,C1)(D2,C2)(D3,C3)에는 스위치(SW1,SW2,SW3)가 구성되며, 각 스위치(SW1,SW2,SW3)는 마이컴으로 부터 입력되는 DPM 제어신호(DPM1,DPM2,DPM3)에 의해 스위칭 동작한다.At this time, each output terminal (D1, C1) (D2, C2) (D3, C3) is composed of switches (SW1, SW2, SW3), each switch (SW1, SW2, SW3) is a DPM control signal input from the microcomputer Switching operation is performed by (DPM1, DPM2, DPM3).

그리고, 상기 스위치(SW1,SW2,SW3)의 동작상태와는 상관없이 다이오드 및 콘덴서(D4,C4)의 출력단을 통해서는 마이컴의 대기전압(5V)이 출력된다.The standby voltage 5V of the microcomputer is output through the output terminals of the diodes and the capacitors D4 and C4 regardless of the operating states of the switches SW1, SW2, and SW3.

이와 같은 종래 DPM 제어 스위칭 회로는 마이컴으로 부터 인가되는 DPM 제어신호(DPM1,DPM2,DPM3)에 따라서 각 스위치(SW1,SW2,SW3)를 온/오프 동작시켜 설정된 모드에 맞는 전원 전압(B+)을 공급하게 된다.Such a conventional DPM control switching circuit turns on / off each switch SW1, SW2, SW3 according to the DPM control signals DPM1, DPM2, and DPM3 applied from the microcomputer to supply a power supply voltage B + suitable for a set mode. Will be supplied.

이때, DPM 모드시에는 스위치(SW1,SW2,SW3)를 모두 오프시키도록 하여, 각 출력단(D1,C2)(D2,C2)(D3,C3)을 통해 전원 전압(B+ 1,B+ 2,B+ 3)은 출력되지 않도록 하고, 출력단(D4,C4)을 통해 마이컴의 대기전압(5V)만이 회로에 공급되도록 한다.At this time, in the DPM mode, all the switches SW1, SW2, and SW3 are turned off, and the power supply voltage B + 1 , B + 2 through each output terminal D1, C2, D2, C2, D3, C3. , B + 3 ) is not output, and only the standby voltage (5V) of the microcomputer is supplied to the circuit through the output terminals (D4, C4).

이와 같이, DPM 제어모드를 적용하기 위하여 SMPS 트랜스의 각 출력단 각각의 이에 대한 스위치(SW1,SW2,SW3)를 구성하여야 하므로써, 사용 부품수의 증가를초래하게 되며, DPM 모드시에는 모든 스위치(SW1,SW2,SW3)를 오프시켜야 하므로써, 스위치의 스위칭 손실에 의해 DPM 모드시 소비전력이 상승하게 되는 문제점이 있다.Thus, in order to apply the DPM control mode, the switch (SW1, SW2, SW3) for each output terminal of the SMPS transformer must be configured, resulting in an increase in the number of parts used, and in the DPM mode, all switches (SW1). Since SW2 and SW3) must be turned off, power consumption increases in the DPM mode due to the switching loss of the switch.

본 발명에서는 이와 같은 문제점을 해결하기 위하여 SMPS 트랜스의 2차측 권선에 스위치 수단을 구성하고, 이의 스위칭 제어를 위한 DPM 제어신호를 스위치 수단에 인가하여, 2차측 코일 자체에 유기되는 AC 전원 자체를 온/오프 시킬 수 있도록 하므로써, 단일 스위치 수단에 의해 2차측 전체 권선의 출력에 대하여 제어가 이루어질 수 있도록 한 것이다.In the present invention, in order to solve such a problem, a switch means is configured in the secondary winding of the SMPS transformer, and a DPM control signal for switching control thereof is applied to the switch means to turn on the AC power itself induced in the secondary coil itself. By making it possible to turn on / off, control is made on the output of the entire secondary side winding by a single switch means.

도 1은 종래 전원절전모드(DPM) 제어 스위칭 회로의 개략적인 구성을 보인 회로도.1 is a circuit diagram showing a schematic configuration of a conventional power saving mode (DPM) control switching circuit.

도 2는 본 발명 전원절전모드(DPM) 제어 스위칭 회로의 구성을 보인 회로도.2 is a circuit diagram showing the configuration of a power saving mode (DPM) control switching circuit of the present invention.

본 발명은 정류된 전원 전압을 스위칭하여 2차측으로 유기시켜 각 회로 소자의 사용전원 전압을 공급하도록 하는 SMPS 트랜스에 있어, SMPS 트랜스의 사용전원 전압이 유기되는 권선부와 마이컴의 대기전원이 유기되는 권선부의 양단 사이에 스위치 소자를 구성하고, 구성된 스위치 소자는 DPM 제어신호에 따라서, 스위칭 동작하여 상기한 사용전원 전압이 유기되는 권선부상의 AC 전원을 온/오프 시킬 수 있도록 구성됨을 특징으로 한다.The present invention is a SMPS transformer for switching the rectified power supply voltage to the secondary side to supply the power supply voltage of each circuit element, wherein the winding portion is induced and the standby power source of the microcomputer is induced A switch element is configured between both ends of the winding unit, and the configured switch element is configured to switch on / off the AC power on the winding unit where the above-mentioned power source voltage is induced by switching operation according to the DPM control signal.

도 2는 상기한 바와 같은 구성을 따르는 본 발명의 실시예를 나타낸 것으로, 도 2를 참조하여 그 구성 및 동작을 설명하면 다음과 같다.Figure 2 shows an embodiment of the present invention according to the configuration as described above, with reference to Figure 2 will be described the configuration and operation as follows.

스위칭 동작하여 각 출력단(D1,C1)(D2,C2)(D3,C3)을 통해 각 회로부의 사용전원 전압(B+ 1,B+ 2,B+ 3) 및 출력단(D4,C4)을 통해 마이컴의 대기전압(5V)을 출력하는SMPS 트랜스에 있어서,Through switching operation, through each output terminal D1, C1 (D2, C2) (D3, C3) through the power supply voltage (B + 1 , B + 2 , B + 3 ) and output terminals (D4, C4) of each circuit part. In the SMPS transformer that outputs the standby voltage (5V) of the microcomputer,

상기 SMPS 트랜스의 2차측 권선에 있어 전원 전압(B+ 1,B+ 2,B+ 3) 출력 권선부(LB)와 마이컴 대기전압 출력을 위한 권선부(LS)의 양단을 DPM 제어신호(DPM1)에 따라서 스위칭하여 권선부(Ls)의 AC 전원을 온/오프 제어할 수 있도록 하는 릴레이(RL1)를 구성한 것을 특징으로 한다.In the secondary winding of the SMPS transformer, both ends of the power supply voltage (B + 1 , B + 2 , B + 3 ) output winding (L B ) and the winding (L S ) for the microcomputer standby voltage output are connected to the DPM control signal. A relay RL1 is configured to switch according to DPM1 so as to turn on / off the AC power supply of the winding part Ls.

종래와 동일부분에 대하여서는 동일부호로 처리하였으며, 미 설명된 부호 Q1은 DPM 제어신호(DPM1)를 릴레이(RL1)에 공급하기 위한 스위칭 트랜지스터이다.The same reference numerals are used for the same parts as in the related art, and reference numeral Q1, which is not described, is a switching transistor for supplying the DPM control signal DPM1 to the relay RL1.

이와 같은 구성을 갖는 본 발명은 전원 전압(B+ 1,B+ 2,B+ 3) 출력을 위한 권선부(LB)의 AC 전원 단속여부를 결정하여 DPM 제어가 가능하도록 하는 것으로,The present invention having the configuration as described above is to enable the DPM control by determining whether the AC power intermittent of the winding portion (L B ) for the power supply voltage (B + 1 , B + 2 , B + 3 ) output,

정상적인 동작 상태에서는 릴레이(RL1)가 온 동작상태를 유지하고 있어, SMPS 트랜스의 권선부(LB)와 권선부(LS)가 연결된 상태로 정상적인 SMPS 트랜스의 동작이 가능하게 된다.In the normal operating state, the relay RL1 maintains the ON operation state, and thus the normal SMPS transformer can be operated while the winding part L B and the winding part L S of the SMPS transformer are connected.

따라서, 일반적인 SMPS 트랜스와 같이, 권선부(LB)의 출력단(D1,C2)(D2,C2) (D3,C3)을 통해 전원 전압(B+ 1,B+ 2,B+ 3)을 출력하게 된다.Therefore, like a typical SMPS transformer, the power supply voltage B + 1 , B + 2 , B + 3 is output through the output terminals D1, C2 (D2, C2) (D3, C3) of the winding part L B. Done.

이때, DPM 모드 동작시에는 DPM 제어신호(DPM1)에 의해 릴레이(RL1)가 오프되면서, SMPS 트랜스의 권선부(LB)와 권선부(LS)가 회로적으로 떨어지게 된다.At this time, in the DPM mode operation, the relay RL1 is turned off by the DPM control signal DPM1, so that the winding part L B and the winding part L S of the SMPS transformer are separated from each other.

즉, SMPS 트랜스의 권선부(LB)가 접지로 부터 분리되는 것을 의미하는 것으로, 이는 권선부(LB)에는 AC 전원이 오프된다는 것을 의미하는 것이다.That is, it means that the winding portion (L B ) of the SMPS transformer is separated from the ground, which means that the AC power is turned off to the winding portion (L B ).

따라서, 권선부(LB)에는 어떠한 전압도 유기되지 않게 되고, 이에 따라 전원 전압(B+ 1,B+ 2,B+ 3)은 발생하지 않게 된다.Therefore, no voltage is induced in the winding portion L B , and thus, the power supply voltages B + 1 , B + 2 , and B + 3 do not occur.

그러나, 마이컴의 대기전압은 권선부(LS)를 통해 계속하여 출력된다.However, the standby voltage of the microcomputer continues to be output through the winding part L S.

다시말하면, 본 발명은 소정의 DPM 제어신호(DPM1)를 이용하여 하나의 스위치소자 릴레이(RL1)의 스위칭 동작만으로 상기한 각 전원 전압(B+ 1,B+ 2,B+ 3) 전체에 대하여 제어가 가능한 구성을 갖는 것이다.In other words, according to the present invention, only the switching operation of one switch element relay RL1 using the predetermined DPM control signal DPM1 is applied to the entire power supply voltages B + 1 , B + 2 , B + 3 . It has a controllable configuration.

이에 따르면, 본 발명은 회로소자의 감소와 각 사용전원 전압의 출력에 대한 DPM 모드시 스위칭 손실을 줄일 수 있는 DPM 제어 스위칭 회로를 구현할 수 있게 되는 것이다.Accordingly, the present invention can implement a DPM control switching circuit which can reduce the circuit element and the switching loss in the DPM mode for the output of each power supply voltage.

Claims (2)

정류된 전원 전압을 스위칭하여 2차측으로 유기시켜 각 회로 소자의 사용전원 전압(B+ 1,B+ 2,B+ 3)을 공급하도록 하는 SMPS 트랜스에 있어, SMPS 트랜스의 사용전원 전압(B+ 1,B+ 2,B+ 3)이 유기되는 권선부(LB)와 마이컴의 대기전원이 유기되는 권선부(LS)의 양단 사이에 스위치 소자를 구성하고, 구성된 스위치 소자는 DPM 제어신호(DPM1)에 따라서, 스위칭 동작하여 상기한 사용전원 전압(B+ 1,B+ 2,B+ 3)이 유기되는 권선부(LB)상의 AC 전원을 온/오프 시킬 수 있도록 구성됨을 특징으로 하는 전원절전모드(ＤＰＭ) 제어 스위칭 회로.In the SMPS transformer which switches the rectified power supply voltage to the secondary side and supplies the used power supply voltage (B + 1 , B + 2 , B + 3 ) of each circuit element, the power supply voltage of the SMPS transformer (B + 1, B + 2, B + 3) are part of the switching element between the two ends of induced winding (L B) and the winding (L S) that standby power of the microcomputer to be organic and configured switch element DPM control signal According to (DPM1), the switching operation is configured to turn on / off the AC power on the winding portion (L B ) is the use power voltage (B + 1 , B + 2 , B + 3 ) is induced Power-save mode (DPM) control switching circuit. 제 1항에 있어서, 상기 스위치 소자는 릴레이(RL1)로 구성된 것을 특징으로 하는 전원절전모드(ＤＰＭ) 제어 스위칭 회로.2. The power saving mode (DPM) control switching circuit according to claim 1, wherein said switch element is comprised of a relay (RL1).
KR1019990057184A 1999-12-13 1999-12-13 Switching circuit for control display power management mode KR20010055864A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100468722B1 (en) * 2001-04-27 2005-01-29 삼성전자주식회사 Power down voltage control method and apparatus
US8169762B2 (en) 2009-04-20 2012-05-01 Energy Safe Technologies, Inc. Relay with current transformer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100468722B1 (en) * 2001-04-27 2005-01-29 삼성전자주식회사 Power down voltage control method and apparatus
US8169762B2 (en) 2009-04-20 2012-05-01 Energy Safe Technologies, Inc. Relay with current transformer

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