1276277 '九、發明說明： 【發明所屬之技術領域】 本發明係-種電源控制電路，特別係關於—種利用機械開關控制電 關以導通電源至電子裝置電流路徑的電源控制電路。 【先前技術】1276277 'IX. INSTRUCTIONS: TECHNICAL FIELD OF THE INVENTION The present invention relates to a power supply control circuit, and more particularly to a power supply control circuit that uses a mechanical switch to control a switch to conduct power to a current path of an electronic device. [Prior Art]
在電子裝置與其供電電源之間，均需安裝一開關以便於用戶操縱該電子 裝置，開觸。在習知技術巾，-般為簡單地將_賊式撥_關或按备 開關等置於電子裝置與供電電源之間，通過該機械開關直接通斷從供電電 源至電子裝·大電流。但在___稍域辦，機則關會抖 動，其觸點處容易產生電孤，容易磨損、燒姓及氧化，造成開關接觸不良， 影響電子裝置的正常供電。 另，電子裝置-般均包含有-些集成晶片，其可通過電路設計或電路設 計與軟體編程的結合來實現某些特定的功能。 因此，提供-電源控制電路，利用電子開關代替機械開關來直接通斷電 子裝置的供電電流，並_電子裝置所具㈣—些魏與機械關共同控 制雷早關關的iS盥斷。 【發明内容】 轉於此，提供—電雜魏路，_電子_代替機械關通斷電子 • 裝置的供電電流，並利用電子裝置與機械開關共同控制電子開關的通與斷。 所提供的電源控制電路包括-電源、一電子裝置、一機械開關、一電子 開關以及一控制電子開關導通/截纟的驅動電路。射，所述機械開關置於 驅動電路與電子裝置之間，所述驅動電路置於電子開關與電子裝置之間， 所述電子開關置於電源與電子裝置之間以導通/截止從電源至電子裝置的電 流；所述機械開關分別發送電平訊號給驅動電路及電子裝置；所述驅動電 路在接收到從機械開關發送的電平訊號後發送另一電平訊號給電子裝置並 控制電子開關導通。所述電子裝置接收到機械開關發送給其的電平訊號 後，發送截止控制訊號給驅動電路，使電子開關截止，而在接收到驅動電 路發送給其的電平訊號後，發送維持導通控制訊號給驅動電路，使電子開 6 .^76277 \ 關維持導通狀態。 所述電子裝置具有複數埠，包括—電源埠、—控制埠、—裝置開啟璋以 及一裝置關閉埠。 所述電源槔經由電子開關與電源相連，從電源處接受電能供應。 、所述機械包括-雙繼開關，所述雙觸關關移滅轉從而選擇 性導通與驅動電路或與裝置關閉埠的連接，以發送電平訊號給驅動電路 裝置關閉埠。 、，所述控制埠與驅動電路相$，根據所述驅動電路發送至裝置開啟璋的電 平訊號發送_導通控制職給魏電路，從而控繼子關轉導通狀 態，及根據所述雙觸電關發送至裝置關埠、的電平訊號發送截止控制訊 號給驅動電路，從而控制電子開關截止。 【實施方式】A switch is required between the electronic device and its power supply to facilitate the user to operate the electronic device and open the touch. In the conventional technical towel, it is generally simple to place a _thief dial-off or a backup switch between the electronic device and the power supply, and the mechanical switch directly turns on and off from the power supply to the electronic device. However, in the ___ slightly domain, the machine will be shaken, and the contacts will be prone to electrical isolation, easy to wear, burned and oxidized, resulting in poor switch contact, affecting the normal power supply of the electronic device. In addition, electronic devices generally include some integrated chips that can be implemented by circuit design or a combination of circuit design and software programming to achieve certain functions. Therefore, the power supply control circuit is provided, and the electronic switch is used instead of the mechanical switch to directly turn off the power supply current of the electronic device, and the electronic device has (4) - some Wei and the mechanical control jointly control the iS break of the lightning early closing. SUMMARY OF THE INVENTION Turning to this, it is provided that the electric current is supplied to the device, and the electronic device and the mechanical switch jointly control the on and off of the electronic switch. The power control circuit provided includes a power source, an electronic device, a mechanical switch, an electronic switch, and a drive circuit for controlling the on/off of the electronic switch. The mechanical switch is disposed between the driving circuit and the electronic device, and the driving circuit is disposed between the electronic switch and the electronic device, and the electronic switch is disposed between the power source and the electronic device to be turned on/off from the power source to the electronic device. Current of the device; the mechanical switch respectively sends a level signal to the driving circuit and the electronic device; after receiving the level signal sent from the mechanical switch, the driving circuit sends another level signal to the electronic device and controls the electronic switch to be turned on. . After receiving the level signal sent to the mechanical switch, the electronic device sends a cutoff control signal to the driving circuit to turn off the electronic switch, and after receiving the level signal sent by the driving circuit, sends a sustain conduction control signal. Give the drive circuit so that the electronic open 6 .^76277 \ off maintains the on state. The electronic device has a plurality of ports, including - a power port, a control port, a device opening port, and a device closing port. The power source is connected to the power source via an electronic switch, and receives power supply from the power source. The machine includes a double relay switch, and the double contact is turned off to selectively conduct a connection with the driving circuit or the device closing port to send a level signal to the driving circuit device to turn off. And the control circuit and the driving circuit phase $ are sent according to the level signal sent by the driving circuit to the device, and the conduction control function is applied to the Wei circuit, thereby controlling the relay to turn the conduction state, and according to the double-electricity off The level signal sent to the device is turned off to send a cutoff control signal to the drive circuit, thereby controlling the electronic switch to be turned off. [Embodiment]
明參閱第-圖’係電源控制電路一具體實施方式的電路框圖。一電子開 關20置於-電子裝置3G與—供應其電能的電源1G之間，以根據需要接通 =切斷電子裝置3G與電源1Q之間的連接，其中所述需要是啟或關閉 電子裝置30電能供應的必要…驅動電路4〇置於電源1〇與電子開關 之間，另還連接至-機械關5〇與電子裝置3G。所述驅動電路接收機械開 關50或電子裝置30發送的控制訊號，並根據接收的控制訊號控制電子開 關20導通雜止，從而接通或域電子裝置％的魏供應。機械開關5〇 =與驅動電路40械外，另還連接至電子裝置％，以在賴制關％動 作，通知驅動電路40控制電子開關2〇截止時，預先通知電子裝置3〇，使 其執行關機的準備動作。例如，#電子裝置3()為—電腦時，其接收到機械 開關5—0發送的關機通知後，進行一些保存檔之類的準備動作。電子裝置邓 具有複數埠’如與電子關2G直接相連的電源埠Pin，與驅誠路40直接 相連的控辨Cn，與機械關5〇 -端直接相連的裝置_槔⑸，以及與 機械開^另、、驅動電路以及一軟開關電路⑼均直接相連的裝置開啟埠 〇n。該科之間根據需要在電子裝置30㈣可具有相應連接（未圖示）， 例如控制4 Cn與裝置關閉埠以及裝置開啟i車On之間均具有連接，以便 該控辦Cnit觸連接伽戲關料嗔裝置_皐α所處的狀態， 7 1276277 • ‘錄據該狀態來控制驅動電路40，繼而控制電子開關2〇的導通與載止。 • 請參閱第二圖，係第-圖所示實施方式的一具體電路圖。第二圖中，所 不電子開關20為- PMOS管Q，所示驅動電路4〇由電阻R、以及二極體 Dl、D2與D3組成。PMOS管Q的源極與電源1〇相連，汲極盘電子裝置 ， 的電源軌相連。電阻R連接觸s管q的源極與閘極。二極體m置於 PMOS管Q的閘極與電子裝置％的裝置開啟痒&之間，單嚮導通 =Q的閘極至電子裝置30裝置開啟琿0n的連接。二極體说置於pM〇s 管Q的閘極與機械開關50之間，單向導通PM0S管Q閘極至機械開關％ 的連接。二極體D3置於PMOS管Q的閘極與電子裝置3〇的控制埠〇之 間，單嚮導通PMOS管Q .至控辦Cn的連接。機械_ %為一具雙 • 觸點a、b的撥動式_ SW1，該撥動式關則的撥動紐n左右撥動時， 其雙觸點a與b分別導通二極體D2的陰極與地及電子裝置3〇中裝置關閉 埠Off與地之間的連接，從而啟動或切斷電子裝置3〇的電能供應。在未被 撥動時，該撥動式關SW1的撥動紐N置於其居中的位置，雙&點&與b 不導通上述任何電氣連接。依此，當撥動開關SW1的波動朝第二圖中 左的方向撥動，雙觸點a與b導通二極體D2陰極與地的連接時，電阻R的 存在使PM0S管Q的源極閘極之間產生一電壓差，pM〇s管〇導通，供應 電月b至電子裝置30的電源埠pin。同時，經由電阻r與二極體Di的壓降， 裝置開啟埠〇n接收一低電平訊號。如前所述，控制埠α與裝置開啟埠 • 之間具有電氣連接，因此，控制埠Cn可偵測裝置開啟埠〇n所處的電平。當0 偵測到裝置開啟_ 〇n處於低電平後，控制埠Cn^送維持導通控制訊號，維 持PM0S管Q的閘極處於低電平，從而控制PM〇s管Q處於導通狀態，維 持電子裝置30的電能供應。當撥動開關SW1的波動紐^^朝第二圖中右的 方向撥動，雙觸點a與b導通電子裝置30的裝置關閉埠〇ff與地的連接時， 裝置關閉埠Off接收一低電平訊號。如前所述，控制埠Cn亦與裝置關閉埠 具有電氣連接，因此，控制埠。亦可偵測裝置關閉埠0ff所處的電平。 當偵測到裝置關閉埠〇ff處於低電平後，控制埠Cn發送載止控制訊號，控制 PM0S管Q的閘極處於高電平，PM〇s管Q截止，停止供應電能至電子裝 置30。在本實施方式中，所述的高電平是指高於電源1〇所提供電平v減去 PM0S管Q的開啟電壓ντ (由源極指向閘極的正向電壓）後的電平，所述 1276277Referring to the circuit diagram of a specific embodiment of the power supply control circuit of the first embodiment. An electronic switch 20 is placed between the electronic device 3G and the power source 1G that supplies its electrical energy to turn on/off the connection between the electronic device 3G and the power source 1Q as needed, wherein the need to turn the electronic device on or off 30 necessary for power supply... The drive circuit 4 is placed between the power supply 1〇 and the electronic switch, and is also connected to the mechanical switch 5〇 and the electronic device 3G. The driving circuit receives the control signal sent by the mechanical switch 50 or the electronic device 30, and controls the electronic switch 20 to turn on the miscellaneous according to the received control signal, thereby turning on or supplying the domain electronic device %. The mechanical switch 5〇= is externally connected to the driving circuit 40, and is further connected to the electronic device% to notify the driving circuit 40 to control the electronic switch 2〇 to be turned off when the operation of the electronic circuit 2 is turned off. Preparation for shutdown. For example, when the electronic device 3 () is a computer, it receives a shutdown notification sent by the mechanical switch 5-0, and performs preparatory actions such as saving files. The electronic device Deng has a plurality of powers such as a power supply 埠Pin which is directly connected to the electronic switch 2G, a control Cn directly connected to the driveway 40, a device directly connected to the mechanical switch 5〇-end _槔(5), and a mechanical open ^ Another, the drive circuit and a soft switch circuit (9) are directly connected to the device to open 埠〇n. Between the sections, there may be a corresponding connection (not shown) between the electronic device 30 (4) as needed, for example, the control 4 Cn is connected to the device and the device is turned on, so that the control Cnit touches the connection. The state in which the device _皋α is located, 7 1276277 • 'The state is controlled to control the drive circuit 40, and then the conduction and the stop of the electronic switch 2 控制 are controlled. • Please refer to the second figure, which is a specific circuit diagram of the embodiment shown in the figure. In the second figure, the electronic switch 20 is a PMOS transistor Q, and the driving circuit 4 is shown by a resistor R and diodes D1, D2 and D3. The source of the PMOS transistor Q is connected to the power source 1〇, and the power rail of the drain disk electronic device is connected. The resistor R is connected to the source and gate of the s-tube q. The diode m is placed between the gate of the PMOS transistor Q and the device of the electronic device % itch & the gate of the unidirectional pass = Q to the connection of the electronic device 30 device 珲0n. The diode is placed between the gate of the pM〇s tube Q and the mechanical switch 50, and the connection of the PM gate of the PM0S tube to the mechanical switch is unidirectional. The diode D3 is placed between the gate of the PMOS transistor Q and the control port of the electronic device 3, and is connected to the connection of the control transistor Cn by the PMOS transistor Q. Mechanical _ % is a pair of contacts • SW and _ SW1 of the contact a, b, when the toggle-type button is toggled left and right, the double contacts a and b respectively turn on the diode D2 The cathode and the ground and the electronic device 3 埠 close the connection between 埠Off and ground, thereby starting or cutting off the power supply of the electronic device 3〇. When not dialed, the toggle N of the toggle switch SW1 is placed in its centered position, and the double & point & b does not conduct any of the above electrical connections. Accordingly, when the fluctuation of the toggle switch SW1 is toggled in the left direction in the second figure, and the double contacts a and b conduct the connection of the cathode of the diode D2 to the ground, the presence of the resistor R causes the source of the PM0 tube Q. A voltage difference is generated between the gates, and the pM〇s tube turns on, and the power supply b is supplied to the power supply 埠pin of the electronic device 30. At the same time, the device is turned on to receive a low level signal via the voltage drop of the resistor r and the diode Di. As mentioned earlier, there is an electrical connection between the control 埠α and the device 埠. Therefore, the control 埠Cn can detect the level at which the device is turned on. When 0 detects that the device is turned on _ 〇n is at a low level, the control 埠Cn^ sends a sustain conduction control signal to maintain the gate of the PM0S tube Q at a low level, thereby controlling the PM〇s tube Q to be in a conducting state, maintaining The electrical energy supply of the electronic device 30. When the fluctuation button of the toggle switch SW1 is toggled in the right direction in the second figure, the dual contacts a and b turn on the device of the electronic device 30 to close the connection between the device and the ground, the device is turned off and the reception is low. Level signal. As previously mentioned, the control 埠Cn is also electrically connected to the device 埠, thus controlling 埠. It can also detect the level at which the device is turned off. When it is detected that the device is turned off, ff is low, the control port Cn sends a load control signal, the gate of the PM0S tube Q is controlled to be at a high level, and the PM〇s tube Q is turned off to stop supplying power to the electronic device 30. . In the present embodiment, the high level refers to a level higher than a level v provided by the power supply 1 minus the turn-on voltage ντ of the PMOS transistor Q (the forward voltage from the source to the gate). The 1276277
的低電平是龄於或餘w 1G的電平v ^ PMC)S管⑽開啟電壓w 後的電平。另，裝置關閉埠0ff還與電子裝置30内的處理裝置（例如mcu、 CPU等’未圖示）相連’在裝置關閉崞〇ff接收到低電平訊號後，在控制淳 =發送截止控制訊號促使PMOS管Q _之前，處理裝置贱作關^準 備動作，例如資料的保存等。 撥動式開關SW1經由其左右撥動來執行電子裝置3〇的開機盘關機動 作，並在電子裝置30開關機完成後，返回至中間狀態以不導通任何電氣連 接。在其他實施方式中，撥動式關SW1可由其他具雙觸點或多觸點、可 左右撥動或轉動的觸點開關代替，在此不作限制。 限於刪管Q，其還可是則三極體祕有相似功能=^= 片之類。 上述實施方式中，撥動式開關SW1或其他雙觸點開關只需在啟動與關 閉電子裝i 30時短暫導通一小電流，而供應給電子裝^ %的大電流由電 子開關30根據驅動電路4〇、撥動式開關綱或其他雙觸點開關 、以及電 子裝置30的共同_來通斷，因此，避免了機械關5()導通大電流帶來 的不穩定，減少了損耗。 、’不上所述，以上所述僅為本發明之較佳實施例而已，且已達廣泛之使用 功效，凡其他未脫離本發明所揭示之精神下所完成之均等變化或修飾，均 應包含在下述之申請專利範圍内。 【圖式簡單說明】 ，一圖係電源控制電路一具體實施方式的電路框圖。 第一圖係第一圖所示具體實施方式的一具體電路圖。 【主要元件符號說明】 10 20 30 40 50 電源The low level is the level of the age or the remaining w 1G level v ^ PMC) S tube (10) after the voltage w is turned on. In addition, the device shutdown 埠0ff is also connected to the processing device (for example, mcu, CPU, etc. 'not shown) in the electronic device 30. After the device is turned off 崞〇 ff receives the low level signal, after the control 淳 = the transmission cutoff control signal Before the PMOS transistor Q_ is caused, the processing device performs a preparatory action, such as saving data. The toggle switch SW1 performs the power-off operation of the electronic device 3〇 via its left and right dialing, and returns to the intermediate state after the electronic device 30 is turned on and off to not conduct any electrical connection. In other embodiments, the toggle-type switch SW1 can be replaced by other contact switches having two-contact or multi-contact, left-right toggle or rotation, which are not limited herein. Limited to the deletion of Q, it can also be that the triad has a similar function = ^ = slice and the like. In the above embodiment, the toggle switch SW1 or other double-contact switch only needs to briefly conduct a small current when starting and closing the electronic device i 30, and the large current supplied to the electronic device is controlled by the electronic switch 30 according to the driving circuit. 4〇, the toggle switch or other two-contact switch, and the common_off of the electronic device 30 are turned on and off, thereby avoiding the instability caused by the mechanical shutdown 5() conducting a large current and reducing the loss. The above description is only the preferred embodiment of the present invention and has been used in a wide range of ways, and all other equivalent changes or modifications which are not departing from the spirit of the present invention should be It is included in the scope of the following patent application. [Simple diagram of the diagram], a diagram is a circuit block diagram of a specific embodiment of a power control circuit. The first figure is a specific circuit diagram of the specific embodiment shown in the first figure. [Main component symbol description] 10 20 30 40 50 Power supply
Pin 電子開關 電子裝置 驅動電路 機械開關 電源埠 9 1276277Pin Electronic Switch Electronic Device Drive Circuit Mechanical Switch Power Supply 1 9 1276277
控制埠 Cn 裝置開啟埠 On 裝置關閉埠 Off PMOS 管 Q 電阻 R 二極體 D1、D2、D3 撥動式開關 SW1 觸點 a、b 撥動紐 NControl 埠 Cn Device On 埠 On Device Off 埠 Off PMOS Tube Q Resistor R Diode D1, D2, D3 Toggle Switch SW1 Contact a, b Toggle N
1010