TW202113546A - Embedded power supply with high boot/shutdown accuracy and related computer system - Google Patents

Embedded power supply with high boot/shutdown accuracy and related computer system Download PDF

Info

Publication number
TW202113546A
TW202113546A TW108134371A TW108134371A TW202113546A TW 202113546 A TW202113546 A TW 202113546A TW 108134371 A TW108134371 A TW 108134371A TW 108134371 A TW108134371 A TW 108134371A TW 202113546 A TW202113546 A TW 202113546A
Authority
TW
Taiwan
Prior art keywords
coupled
switch
resistor
pin
signal pin
Prior art date
Application number
TW108134371A
Other languages
Chinese (zh)
Inventor
詹子增
Original Assignee
宏碁股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 宏碁股份有限公司 filed Critical 宏碁股份有限公司
Priority to TW108134371A priority Critical patent/TW202113546A/en
Publication of TW202113546A publication Critical patent/TW202113546A/en

Links

Images

Landscapes

  • Power Sources (AREA)

Abstract

An embedded power supply includes a PS_ON pin, a GND pin and a boot/shutdown circuit. The boot/shutdown circuit includes a first resistor, a second resistor, a third resistor, a first diode, a second diode, a Zener diode, a capacitor and a switch. The switch includes a first end coupled to the PS_ON pin via the first and second resistors, a second end coupled to the GND pin via the capacitor, and a control end coupled to the PS_ON pin via the first resistor. The first diode is coupled between the control end of the switch and the third resistor. The second diode includes an anode coupled between the second end of the switch and the capacitor and a cathode coupled to the PS_ON pin via the first resistor. The Zener diode includes an anode coupled to the GND pin and a cathode coupled to the control end of the switch.

Description

具高開關機準確度之內嵌式電源供應器和相關電腦系統Built-in power supply and related computer system with high switching accuracy

本發明相關於一種內嵌式電源供應器和相關電腦系統，尤指一種具高開關機準確度之內嵌式電源供應器和相關電腦系統。The present invention relates to an embedded power supply and related computer system, in particular to an embedded power supply and related computer system with high switching accuracy.

電腦系統中不同組件所需的操作電壓不同，因此普遍採用電源供應器(power supply)以通過變壓、整流與濾波的方式，將交流電(AC)室內電源轉換為直流電(DC)以驅動不同零組件。目前桌上型電腦系統多半使用ATX、micro ATX或BTX等規格之內嵌式電源供應器，可直接將110/220伏特之交流室電轉換成多個直流電源(例如正負3.3V、5V、5VSB等)以供電至電腦系統之主機板。Different components in computer systems require different operating voltages, so power supplies are commonly used to convert alternating current (AC) indoor power into direct current (DC) through transformation, rectification, and filtering to drive different zeros. Components. At present, most desktop computer systems use ATX, micro ATX or BTX embedded power supplies, which can directly convert 110/220 volt AC room power into multiple DC power sources (for example, plus or minus 3.3V, 5V, 5VSB) Etc.) to supply power to the motherboard of the computer system.

第1圖為先前技術中一種電腦系統100之示意圖。電腦系統100包含一主機板10和一內嵌式電源供應器20。內嵌式電源供應器20之啟動訊號接腳PS_ON和接地接腳GND可透過一連接器(未顯示)電性連接至主機板10中相對應之啟動訊號接腳V_Signal和接地接腳GND’，其中啟動訊號接腳PS_ON和啟動訊號接腳V_Signal係由一橋接電阻R1做連接。Figure 1 is a schematic diagram of a computer system 100 in the prior art. The computer system 100 includes a motherboard 10 and an embedded power supply 20. The activation signal pin PS_ON and the ground pin GND of the embedded power supply 20 can be electrically connected to the corresponding activation signal pin V_Signal and the ground pin GND' of the motherboard 10 through a connector (not shown), The start signal pin PS_ON and the start signal pin V_Signal are connected by a bridge resistor R1.

當使用者按下電源鍵以開啟電腦系統100時，主機板10會透過啟動訊號接腳V_Signal輸出一低電位啟動訊號，而當內嵌式電源供應器20偵測到啟動訊號接腳PS_ON被拉至低電位時，就會開機並開始供應電腦系統100運作所需之電壓。當使用者按下電源鍵以關閉電腦系統100時，主機板10會透過啟動訊號接腳V_Signal輸出一高電位啟動訊號，而當內嵌式電源供應器20偵測到啟動訊號接腳PS_ON被拉至高電位時，就會關機並停止供電。When the user presses the power button to turn on the computer system 100, the motherboard 10 will output a low-level activation signal through the activation signal pin V_Signal, and when the embedded power supply 20 detects that the activation signal pin PS_ON is pulled When it reaches a low level, it will boot up and start to supply the voltage required for the operation of the computer system 100. When the user presses the power button to shut down the computer system 100, the motherboard 10 will output a high-level activation signal through the activation signal pin V_Signal, and when the embedded power supply 20 detects that the activation signal pin PS_ON is pulled When the potential is high, it will shut down and stop power supply.

在先前技術之電腦系統100中，內嵌式電源供應器20之啟動訊號接腳PS_ON和主機板10之啟動訊號接腳V_Signal僅由單一橋接電阻R1做連接。在多次開關機後容易造成電阻R1損壞，間接地導致內嵌式電源供應器20之啟動訊號接腳PS_ON的電位無法準確地反應主機板10之啟動訊號接腳V_Signal的電位，因此容易造成開關機失敗，造成使用者的不便。In the prior art computer system 100, the activation signal pin PS_ON of the embedded power supply 20 and the activation signal pin V_Signal of the motherboard 10 are only connected by a single bridge resistor R1. It is easy to damage the resistor R1 after turning on and off the machine many times, which indirectly causes the potential of the start signal pin PS_ON of the embedded power supply 20 to not accurately reflect the potential of the start signal pin V_Signal of the motherboard 10, so it is easy to cause switching The machine fails, causing inconvenience to the user.

本發明提供一種電腦系統，其包含一主機板和一內嵌式電源供應器。該主機板包含一第一啟動訊號接腳和一第一接地接腳。該內嵌式電源供應器包含一第二啟動訊號接腳、耦接於該第一接地接腳之一第二接地接腳，以及一開關機電路。該開關機電路包含一第一電阻，耦接於該第一啟動訊號接腳和該第二啟動訊號接腳之間；一第二電阻；一第三電阻；一電容；一開關，其第一端透過該第二電阻耦接於該第一啟動訊號接腳並透過該第一電阻和該第二電阻耦接於該第二啟動訊號接腳，其第二端透過該電容耦接於該第二接地接腳，而其控制端耦接於該第一啟動訊號接腳並透過該第一電阻耦接於該第二啟動訊號接腳；一第一二極體，其陽極耦接於該開關之該控制端，而其陰極透過該第三電阻耦接於該第二接地接腳；一第二二極體，其陽極耦接於該開關之該第二端和該電容之間，而其陰極耦接於該第一啟動訊號接腳並透過該第一電阻耦接於該第二啟動訊號接腳；以及一稽納二極體，其陽極耦接於該第二接地接腳，而其陰極耦接於該開關之該控制端。The present invention provides a computer system, which includes a motherboard and an embedded power supply. The motherboard includes a first activation signal pin and a first ground pin. The embedded power supply includes a second activation signal pin, a second ground pin coupled to the first ground pin, and a switch circuit. The switch circuit includes a first resistor coupled between the first activation signal pin and the second activation signal pin; a second resistor; a third resistor; a capacitor; a switch, the first Terminal is coupled to the first activation signal pin through the second resistor and to the second activation signal pin through the first resistor and the second resistor, and its second terminal is coupled to the first activation signal pin through the capacitor Two ground pins, and the control end is coupled to the first activation signal pin and is coupled to the second activation signal pin through the first resistor; a first diode whose anode is coupled to the switch The control terminal, and its cathode is coupled to the second ground pin through the third resistor; a second diode, the anode of which is coupled between the second terminal of the switch and the capacitor, and its The cathode is coupled to the first activation signal pin and is coupled to the second activation signal pin through the first resistor; and an audit diode whose anode is coupled to the second ground pin, and The cathode is coupled to the control terminal of the switch.

本發明另提供一種應用於一電腦系統中之內嵌式電源供應器，用來供電至該電腦系統中之一主機板，其包含一啟動訊號接腳、一接地接腳，以及一開關機電路。該開關機電路包含一第一電阻，其包含一第一端和耦接於該啟動訊號接腳之一第二端；一第二電阻，其包含耦接於該第一電阻之該第一端的一第一端和一第二端；一第三電阻，其包含一第一端和耦接於該接地接腳之一第二端；一電容，其包含一第一端和耦接於該接地接腳之一第二端；一開關，其第一端耦接於該第二電阻之該第二端，其第二端耦接於該電容之該第一端，而其控制端耦接於該第一電阻之該第一端；一第一二極體，其陽極耦接於該開關之該控制端，而其陰極耦接於該第三電阻之該第一端；一第二二極體，其陽極耦接於該開關之該第二端和該電容之該第一端之間，而其陰極耦接於該第一電阻之該第一端；以及一稽納二極體，其陽極耦接於該接地接腳，而其陰極耦接於該開關之該控制端。The present invention also provides an embedded power supply used in a computer system to supply power to a motherboard in the computer system, which includes a start signal pin, a ground pin, and a switch circuit . The switch circuit includes a first resistor including a first terminal and a second terminal coupled to the enable signal pin; a second resistor including the first terminal coupled to the first resistor A first terminal and a second terminal of a third resistor; a third resistor including a first terminal and a second terminal coupled to the ground pin; a capacitor including a first terminal and a second terminal coupled to the A second terminal of the ground pin; a switch, the first terminal of which is coupled to the second terminal of the second resistor, the second terminal of which is coupled to the first terminal of the capacitor, and the control terminal of which is coupled At the first end of the first resistor; a first diode, the anode of which is coupled to the control end of the switch, and the cathode of which is coupled to the first end of the third resistor; a second, second A pole body, the anode of which is coupled between the second terminal of the switch and the first terminal of the capacitor, and the cathode of which is coupled to the first terminal of the first resistor; and an audit diode, The anode is coupled to the ground pin, and the cathode is coupled to the control terminal of the switch.

第2圖為本發明實施例中一種電腦系統200之示意圖。電腦系統200包含一主機板30和一內嵌式電源供應器40。內嵌式電源供應器40可將AC室內電源轉換為不同穩定的直流電壓以供應給主機板30及其他零件，例如供電給硬碟、光碟機和主機板30上之顯示卡和中央處理器處理(未顯示)。FIG. 2 is a schematic diagram of a computer system 200 according to an embodiment of the present invention. The computer system 200 includes a motherboard 30 and an embedded power supply 40. The built-in power supply 40 can convert AC indoor power into different stable DC voltages to supply the motherboard 30 and other components, such as powering hard disks, optical disc drives, and graphics cards and CPU processing on the motherboard 30 (Not shown).

在一實施例中，內嵌式電源供應器40可採用標準ATX規格。以ATX12V 2x規格來作說明，內嵌式電源供應器40可透過24接腳連接器電性連接至主機板30，其中PIN1、PIN2、PIN12和PIN13為+3.3V電壓之輸出/感測接腳，PIN4、PIN6、PIN21、PIN22和PIN23為+5V電壓之輸出接腳，PIN9為5VSB待機供電電壓之輸出接腳，PIN10和PIN11為+12V電壓之輸出接腳，PIN14為-12V電壓之輸出接腳， PIN20為-5V電壓之輸出接腳或保留接腳，PIN8為電源正常訊號(PG)之接收接腳，PIN16為啟動訊號之接收接腳(PS_ON)，而PIN3、PIN5、PIN7、PIN15、PIN17、PIN18、PIN19和PIN24為接地接腳（GND）。然而，內嵌式電源供應器40所採用之規格並不限定本發明之範疇。In one embodiment, the embedded power supply 40 may adopt the standard ATX specification. Taking the ATX12V 2x specification as an illustration, the embedded power supply 40 can be electrically connected to the motherboard 30 through a 24-pin connector, where PIN1, PIN2, PIN12 and PIN13 are the +3.3V voltage output/sensing pins , PIN4, PIN6, PIN21, PIN22 and PIN23 are the output pins of +5V voltage, PIN9 is the output pins of 5VSB standby supply voltage, PIN10 and PIN11 are the output pins of +12V voltage, and PIN14 is the output pins of -12V voltage. PIN, PIN20 is the output pin or reserved pin for -5V voltage, PIN8 is the receiving pin of the power normal signal (PG), PIN16 is the receiving pin (PS_ON) of the start signal, and PIN3, PIN5, PIN7, PIN15, PIN17, PIN18, PIN19 and PIN24 are ground pins (GND). However, the specifications adopted by the embedded power supply 40 do not limit the scope of the present invention.

內嵌式電源供應器40包含一開關機電路50，設置於內嵌式電源供應器200之啟動訊號接腳PS_ON/接地接腳GND和主機板30中相對應之啟動訊號接腳V_Signal/接地接腳GND’之間。當啟動訊號接腳PS_ON具高電位VH(例如15V)時，內嵌式電源供應器40會關機。當啟動訊號接腳PS_ON具低電位VL(例如5V)時，內嵌式電源供應器40會開機。如相關領域具備通常知識者皆知，內嵌式電源供應器40可另包含整流濾波電路、主電源電路、輔助電源電路、脈衝寬度調變電路、穩壓穩流和保護控制電路等元件，以在開機時提供電腦系統200運作所需之電壓。然而，內嵌式電源供應器40在開機時之供電實施方式並不限定本發明之範疇。The embedded power supply 40 includes a power-on/off circuit 50, which is provided on the start signal pin PS_ON/ground pin GND of the embedded power supply 200 and the corresponding start signal pin V_Signal/ground connection in the motherboard 30 Between the pin GND'. When the start signal pin PS_ON has a high potential VH (for example, 15V), the embedded power supply 40 will shut down. When the start signal pin PS_ON has a low potential VL (for example, 5V), the embedded power supply 40 will be turned on. As known to those with general knowledge in the relevant field, the embedded power supply 40 may additionally include components such as a rectifier and filter circuit, a main power supply circuit, an auxiliary power supply circuit, a pulse width modulation circuit, a voltage stabilization circuit, and a protection control circuit. To provide the voltage required for the operation of the computer system 200 when it is turned on. However, the power supply implementation of the embedded power supply 40 when it is turned on does not limit the scope of the present invention.

開關機電路50包含一開關Q、電阻R1~R3、電容Cs、二極體D1～D2,以及一稽納二極體ZD。電阻R1為橋接電阻，用來連接電源供應器200之啟動訊號接腳PS_ON和主機板30之啟動訊號接腳V_Signal。開關Q之第一端依序透過電阻R2和R1耦接於PS_ON接腳，第二端透過電容Cs耦接於GND接腳，而控制端耦接於啟動訊號接腳V_Signal並透過電阻R1耦接於PS_ON接腳，其中Cgs代表開關Q之第二端和控制端之間的寄生電容。二極體D1之陽極耦接於開關Q之控制端，而陰極透過電阻R3耦接於GND接腳。二極體D2陽極耦接於開關Q之第二端和電容Cs之間，而陰極透過電阻R1耦接於PS_ON接腳。稽納二極體ZD之陽極耦接於GND接腳，而陰極耦接於開關Q之控制端。The switch machine circuit 50 includes a switch Q, resistors R1 to R3, capacitors Cs, diodes D1 to D2, and an audit diode ZD. The resistor R1 is a bridge resistor for connecting the activation signal pin PS_ON of the power supply 200 and the activation signal pin V_Signal of the motherboard 30. The first terminal of the switch Q is sequentially coupled to the PS_ON pin through resistors R2 and R1, the second terminal is coupled to the GND pin through the capacitor Cs, and the control terminal is coupled to the enable signal pin V_Signal and coupled through the resistor R1 On the PS_ON pin, Cgs represents the parasitic capacitance between the second terminal of the switch Q and the control terminal. The anode of the diode D1 is coupled to the control terminal of the switch Q, and the cathode is coupled to the GND pin through the resistor R3. The anode of the diode D2 is coupled between the second terminal of the switch Q and the capacitor Cs, and the cathode is coupled to the PS_ON pin through the resistor R1. The anode of the sensing diode ZD is coupled to the GND pin, and the cathode is coupled to the control terminal of the switch Q.

在本發明實施例中，開關Q可為金屬氧化物半導體場效電晶體(metal-oxide-semiconductor field-effect transistor, MOSFET)、雙極性接面型電晶體(bipolar junction transistor,  BJT)，或其它具類似功能的元件。第2圖以N型金屬氧化物半導體場效電晶體之實施例來作說明，然而開關Q之種類並不限定本發明之範疇。In the embodiment of the present invention, the switch Q may be a metal-oxide-semiconductor field-effect transistor (MOSFET), a bipolar junction transistor (BJT), or other Components with similar functions. FIG. 2 illustrates an embodiment of an N-type metal oxide semiconductor field effect transistor. However, the type of switch Q does not limit the scope of the present invention.

在本發明實施例中，電阻R1之值可為100Ω，電阻R2之值可為1KΩ，電容Cs之值可為20nF，而寄生電容Cgs之值可為450pF。然而，開關機電路50中各元件之值並不限定本發明之範疇。In the embodiment of the present invention, the value of the resistor R1 may be 100Ω, the value of the resistor R2 may be 1KΩ, the value of the capacitor Cs may be 20nF, and the value of the parasitic capacitance Cgs may be 450pF. However, the value of each element in the switch machine circuit 50 does not limit the scope of the present invention.

第3圖為本發明實施例中內嵌式電源供應器40運作時之時序圖。VPS_ON 代表啟動訊號接腳PS_ON之電位，而VOUT 代表內嵌式電源供應器40輸出至主機板30之電壓。本發明之內嵌式電源供應器40會依據啟動訊號接腳PS_ON之電位來開機或關機，而啟動訊號接腳PS_ON之電位相關於主機板30之啟動訊號接腳V_Signal的電位。當啟動訊號接腳PS_ON之電位為高電位VH時，內嵌式電源供應器40為關機，此時輸出至主機板30之電壓VOUT 其值為0；當啟動訊號接腳PS_ON之電位為低電位VL時，內嵌式電源供應器40為開機，此時輸出至主機板30之電壓VOUT 其值不為0。FIG. 3 is a timing diagram of the embedded power supply 40 operating in the embodiment of the present invention. V PS_ON represents the potential of the start signal pin PS_ON, and V OUT represents the voltage output from the embedded power supply 40 to the motherboard 30. The embedded power supply 40 of the present invention will be turned on or off according to the potential of the activation signal pin PS_ON, and the potential of the activation signal pin PS_ON is related to the potential of the activation signal pin V_Signal of the motherboard 30. When the potential of the start signal pin PS_ON is the high potential VH, the embedded power supply 40 is shut down, and the voltage V OUT output to the motherboard 30 at this time has a value of 0; when the potential of the start signal pin PS_ON is low At the potential VL, the embedded power supply 40 is turned on, and the value of the voltage V OUT output to the motherboard 30 at this time is not zero.

第4圖為本發明實施例中內嵌式電源供應器40之開關機狀態與啟動訊號接腳PS_ON之電位之間關係的示意圖。當VPS_ON >VL時，電源供應器40為開機；當VPS_ON >VH時，電源供應器40為關機。當電源供應器40在開機狀態下偵測到啟動訊號接腳PS_ON之電位VPS_ON 超過VH時，此時就會關機；當電源供應器40在關機狀態下偵測到啟動訊號接腳PS_ON之電位VPS_ON 低於VL時，此時就會開機。FIG. 4 is a schematic diagram of the relationship between the power-on state of the embedded power supply 40 and the potential of the start signal pin PS_ON in the embodiment of the present invention. When V PS_ON >VL, the power supply 40 is turned on; when V PS_ON >VH, the power supply 40 is turned off. When the power supply 40 detects that the potential V PS_ON of the start signal pin PS_ON exceeds VH in the power-on state, it will shut down at this time; when the power supply 40 detects the potential of the start signal pin PS_ON in the shutdown state When V PS_ON is lower than VL, it will turn on at this time.

第5圖為本發明實施例中電腦系統200之關機運作的示意圖。當主機板30之啟動訊號接腳V_Signal為高電位VH(其值至少足以讓稽納二極體ZD崩潰)時，二極體D1因順向偏壓而導通，稽納二極體ZD會因逆向偏壓崩潰而提供一穩定電壓(例如VH)而導通開關Q。同時，高電位VH之啟動訊號接腳V_Signal會透過開關Q之寄生電容Cgs來對電容Cs充電(由箭頭S1來表示)，並經由透過電阻R2和導通之開關Q來對電容Cs充電(由箭頭S2來表示)，而電容Cs之內存能量可透過導通之開關Q來將啟動訊號接腳PS_ON拉至高電位VH(由箭頭S3來表示)，此時電源供應器200會關機而不會供電至主機板30。FIG. 5 is a schematic diagram of the shutdown operation of the computer system 200 in an embodiment of the present invention. When the activation signal pin V_Signal of the motherboard 30 is at a high potential VH (its value is at least sufficient to crash the sensing diode ZD), the diode D1 is turned on due to the forward bias, and the sensing diode ZD will be The reverse bias voltage collapses to provide a stable voltage (such as VH) to turn on the switch Q. At the same time, the start signal pin V_Signal of the high potential VH will charge the capacitor Cs through the parasitic capacitance Cgs of the switch Q (represented by the arrow S1), and charge the capacitor Cs through the resistor R2 and the turned-on switch Q (by the arrow S2), and the memory energy of the capacitor Cs can pull the start signal pin PS_ON to the high potential VH (represented by the arrow S3) through the on switch Q. At this time, the power supply 200 will shut down without supplying power to the host. Board 30.

第6圖為本發明實施例中電腦系統200之開機運作的示意圖。當主機板30之啟動訊號接腳V_Signal為低電位VL時，二極體D1因順向偏壓而導通但稽納二極體ZD不動作，因此開關Q為截止。同時，開關Q之寄生電容Cgs會透過二極體D1和電阻R3放電至GND接腳(由箭頭S4來表示)，並帶領電容Cs之內存能量經由二極體D2放電至PS_ON接腳(由箭頭S5 來表示)，進而將啟動訊號接腳PS_ON拉至低電位VL，此時電源供應器200會開機以供電至主機板30。FIG. 6 is a schematic diagram of the booting operation of the computer system 200 in an embodiment of the present invention. When the activation signal pin V_Signal of the motherboard 30 is at the low potential VL, the diode D1 is turned on due to the forward bias voltage but the sensing diode ZD does not operate, so the switch Q is turned off. At the same time, the parasitic capacitance Cgs of the switch Q will be discharged through the diode D1 and the resistor R3 to the GND pin (represented by arrow S4), and the memory energy of the capacitor Cs will be discharged through the diode D2 to the PS_ON pin (by the arrow S5 to indicate), and then pull the start signal pin PS_ON to the low level VL, and the power supply 200 will be turned on to supply power to the motherboard 30 at this time.

綜上所述，本發明電腦系統使用包含多元件之開關電路來控制電源供應器和主機板之間的訊號傳遞，除了能準確地偵測啟動訊號之外，也能承受更頻繁或更多次的開關機電壓切換，且能提升電源供應器對異常電壓突波的抵抗力。 以上所述僅為本發明之較佳實施例，凡依本發明申請專利範圍所做之均等變化與修飾，皆應屬本發明之涵蓋範圍。In summary, the computer system of the present invention uses a multi-component switch circuit to control the signal transmission between the power supply and the motherboard. In addition to accurately detecting the start signal, it can also withstand more frequent or more times. The switch voltage switch of the power supply can improve the resistance of the power supply to abnormal voltage surges. The foregoing descriptions are only preferred embodiments of the present invention, and all equivalent changes and modifications made in accordance with the scope of the patent application of the present invention should fall within the scope of the present invention.

10、30:主機板 20、40:內嵌式電源供應器 50:開關機電路 100、200:電腦系統 PS_ON、V_Signal:啟動訊號接腳 GND、GND’:接地接腳 Q:開關 R1~R3:電阻 Cs:電容 Cgs:寄生電容 D1～D2:二極體 ZD:稽納二極體10, 30: Motherboard 20, 40: Built-in power supply 50: switch machine circuit 100, 200: computer system PS_ON, V_Signal: enable signal pins GND, GND’: ground pins Q: Switch R1~R3: resistance Cs: Capacitance Cgs: parasitic capacitance D1～D2: Diode ZD: Sensing diode

第1圖為先前技術中一種電腦系統之示意圖。 第2圖為本發明實施例中一種電腦系統之示意圖。 第3圖為本發明實施例中內嵌式電源供應器運作時之時序圖。 第4圖為本發明實施例中內嵌式電源供應器之開關機狀態與啟動訊號接腳之電位之間關係的示意圖。 第5圖為本發明實施例中電腦系統之關機運作的示意圖。 第6圖為本發明實施例中電腦系統之開機運作的示意圖。Figure 1 is a schematic diagram of a computer system in the prior art. Figure 2 is a schematic diagram of a computer system in an embodiment of the present invention. Figure 3 is a timing diagram of the embedded power supply operating in the embodiment of the present invention. FIG. 4 is a schematic diagram of the relationship between the power-on state of the embedded power supply and the potential of the activation signal pin in the embodiment of the present invention. Figure 5 is a schematic diagram of the shutdown operation of the computer system in an embodiment of the present invention. Figure 6 is a schematic diagram of the booting operation of the computer system in the embodiment of the present invention.

30:主機板30: Motherboard

40:內嵌式電源供應器40: Built-in power supply

50:開關機電路50: switch machine circuit

200:電腦系統200: computer system

PS_ON、V_Signal:啟動訊號接腳PS_ON, V_Signal: enable signal pins

GND、GND’:接地接腳GND, GND’: ground pins

Q:開關Q: Switch

R1~R3:電阻R1~R3: resistance

Cs:電容Cs: Capacitance

Cgs:寄生電容Cgs: parasitic capacitance

D1~D2:二極體D1~D2: Diode

ZD:稽納二極體ZD: Sensing diode

Claims (10)

一種電腦系統，其包含： 一主機板，其包含一第一啟動訊號接腳和一第一接地接腳；以及 一內嵌式電源供應器，其包含： 一第二啟動訊號接腳； 一第二接地接腳，耦接於該第一接地接腳；以及 一開關機電路，其包含： 一第一電阻，耦接於該第一啟動訊號接腳和該第二啟動訊號接腳之間； 一第二電阻； 一第三電阻； 一電容； 一開關，其包含： 一第一端，透過該第二電阻耦接於該第一啟動訊號接腳，並透過該第一電阻和該第二電阻耦接於該第二啟動訊號接腳； 一第二端，透過該電容耦接於該第二接地接腳；以及 一控制端，耦接於該第一啟動訊號接腳，並透過該第一電阻耦接於該第二啟動訊號接腳； 一第一二極體，其包含： 一陽極，耦接於該開關之該控制端；以及 一陰極，透過該第三電阻耦接於該第二接地接腳； 一第二二極體，其包含： 一陽極，耦接於該開關之該第二端和該電容之間；以及 一陰極，耦接於該第一啟動訊號接腳，並透過該第一電阻耦接於該第二啟動訊號接腳；以及 一稽納二極體，其包含： 一陽極，耦接於該第二接地接腳；以及 一陰極，耦接於該開關之該控制端。A computer system including: A motherboard including a first activation signal pin and a first ground pin; and An embedded power supply, which includes: A second start signal pin; A second ground pin, coupled to the first ground pin; and A switch machine circuit, which includes: A first resistor coupled between the first activation signal pin and the second activation signal pin; A second resistance; A third resistance; A capacitor; A switch, which contains: A first terminal, coupled to the first activation signal pin through the second resistor, and coupled to the second activation signal pin through the first resistor and the second resistor; A second end coupled to the second ground pin through the capacitor; and A control terminal, coupled to the first activation signal pin, and coupled to the second activation signal pin through the first resistor; A first diode, which includes: An anode coupled to the control terminal of the switch; and A cathode coupled to the second ground pin through the third resistor; A second diode, which includes: An anode coupled between the second terminal of the switch and the capacitor; and A cathode, coupled to the first activation signal pin, and coupled to the second activation signal pin through the first resistor; and An audit diode, which contains: An anode coupled to the second ground pin; and A cathode is coupled to the control terminal of the switch. 如請求項1所述之電腦系統，其中： 當該第二啟動訊號接腳具一第一電位時，該內嵌式電源供應器關機； 當該第二啟動訊號接腳具一第二電位時，該內嵌式電源供應器開機以供電至該主機板；且 該第一電位高於該第二電位。The computer system described in claim 1, wherein: When the second activation signal pin has a first potential, the embedded power supply is shut down; When the second activation signal pin has a second potential, the embedded power supply is turned on to supply power to the motherboard; and The first potential is higher than the second potential. 如請求項2所述之電腦系統，其中當該第一啟動訊號接腳具該第一電位時，該第一二極體和該開關為導通，使得具該第一電位之該第一啟動訊號接腳透過該開關之一寄生電容來對該電容充電，並經由該第二電阻和該開關來對該電容充電，該電容之內存能量透過該開關來將該第二啟動訊號接腳拉至該第一電位，而該第一電位足以讓稽納二極體ZD崩潰。The computer system according to claim 2, wherein when the first activation signal pin has the first potential, the first diode and the switch are turned on, so that the first activation signal has the first potential The pin charges the capacitor through a parasitic capacitance of the switch, and charges the capacitor through the second resistor and the switch. The memory energy of the capacitor pulls the second activation signal pin to the switch through the switch. The first potential, and the first potential is sufficient to make the ZD of the sensing diode collapse. 如請求項2所述之電腦系統，其中當該第一啟動訊號接腳具該第二電位時，該第一二極體為導通而該開關為截止，使得該開關之一寄生電容透過該第一二極體和該第三電阻放電至該第二接地接腳，並帶領該電容之內存能量經由該第二二極體放電至該第二啟動訊號接腳，進而將該第二啟動訊號接腳拉至該第二電位。The computer system according to claim 2, wherein when the first activation signal pin has the second potential, the first diode is turned on and the switch is turned off, so that a parasitic capacitance of the switch passes through the first A diode and the third resistor are discharged to the second ground pin, and the memory energy of the capacitor is discharged to the second activation signal pin through the second diode, and then the second activation signal is connected The foot is pulled to the second potential. 如請求項1所述之電腦系統，其中該內嵌式電源供應器採用一標準ATX規格。The computer system according to claim 1, wherein the embedded power supply adopts a standard ATX specification. 如請求項1所述之電腦系統，其中該開關為一金屬氧化物半導體場效電晶體(metal-oxide-semiconductor field-effect transistor, MOSFET)。The computer system according to claim 1, wherein the switch is a metal-oxide-semiconductor field-effect transistor (MOSFET). 一種應用於一電腦系統中之內嵌式電源供應器，用來供電至該電腦系統中之一主機板，其包含： 一啟動訊號接腳； 一接地接腳；以及 一開關機電路，其包含： 一第一電阻，其包含： 一第一端；以及 一第二端，耦接於該啟動訊號接腳； 一第二電阻，其包含： 一第一端，耦接於該第一電阻之該第一端；以及 一第二端； 一第三電阻，其包含： 一第一端；以及 一第二端，耦接於該接地接腳； 一電容，其包含： 一第一端；以及 一第二端，耦接於該接地接腳； 一開關，其包含： 一第一端，耦接於該第二電阻之該第二端； 一第二端，耦接於該電容之該第一端；以及 一控制端，耦接於該第一電阻之該第一端； 一第一二極體，其包含： 一陽極，耦接於該開關之該控制端；以及 一陰極，耦接於該第三電阻之該第一端； 一第二二極體，其包含： 一陽極，耦接於該開關之該第二端和該電容之該第一端之間；以及 一陰極，耦接於該第一電阻之該第一端；以及 一稽納二極體，其包含： 一陽極，耦接於該接地接腳；以及 一陰極，耦接於該開關之該控制端。An embedded power supply used in a computer system for supplying power to a motherboard in the computer system, which includes: A start signal pin; A ground pin; and A switch machine circuit, which includes: A first resistor, which includes: A first end; and A second end, coupled to the start signal pin; A second resistor, which includes: A first end coupled to the first end of the first resistor; and A second end A third resistor, which includes: A first end; and A second terminal, coupled to the ground pin; A capacitor, which contains: A first end; and A second terminal, coupled to the ground pin; A switch, which contains: A first terminal coupled to the second terminal of the second resistor; A second terminal, coupled to the first terminal of the capacitor; and A control terminal, coupled to the first terminal of the first resistor; A first diode, which includes: An anode coupled to the control terminal of the switch; and A cathode coupled to the first end of the third resistor; A second diode, which includes: An anode coupled between the second terminal of the switch and the first terminal of the capacitor; and A cathode coupled to the first end of the first resistor; and An audit diode, which contains: An anode coupled to the ground pin; and A cathode is coupled to the control terminal of the switch. 如請求項7所述之內嵌式電源供應器，其中： 當該啟動訊號接腳具一第一電位時，該內嵌式電源供應器關機； 當該啟動訊號接腳具一第二電位時，該內嵌式電源供應器開機以供電至該主機板；且 該第一電位高於該第二電位。The embedded power supply as described in claim 7, wherein: When the start signal pin has a first potential, the embedded power supply is shut down; When the start signal pin has a second potential, the embedded power supply is turned on to supply power to the motherboard; and The first potential is higher than the second potential. 如請求項7所述之內嵌式電源供應器，其係採用一標準ATX規格。The embedded power supply described in claim 7 adopts a standard ATX specification. 如請求項7所述之內嵌式電源供應器，其中該開關為一金屬氧化物半導體場效電晶體。The embedded power supply according to claim 7, wherein the switch is a metal oxide semiconductor field effect transistor.
TW108134371A 2019-09-24 2019-09-24 Embedded power supply with high boot/shutdown accuracy and related computer system TW202113546A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
TW108134371A TW202113546A (en) 2019-09-24 2019-09-24 Embedded power supply with high boot/shutdown accuracy and related computer system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TW108134371A TW202113546A (en) 2019-09-24 2019-09-24 Embedded power supply with high boot/shutdown accuracy and related computer system

Publications (1)

Publication Number Publication Date
TW202113546A true TW202113546A (en) 2021-04-01

Family

ID=76604264

Family Applications (1)

Application Number Title Priority Date Filing Date
TW108134371A TW202113546A (en) 2019-09-24 2019-09-24 Embedded power supply with high boot/shutdown accuracy and related computer system

Country Status (1)

Country Link
TW (1) TW202113546A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI798721B (en) * 2021-06-17 2023-04-11 和碩聯合科技股份有限公司 Boot control circuit of computer system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI798721B (en) * 2021-06-17 2023-04-11 和碩聯合科技股份有限公司 Boot control circuit of computer system
US11966755B2 (en) 2021-06-17 2024-04-23 Pegatron Corporation Boot control circuit of computer system

Similar Documents

Publication Publication Date Title
US8147138B2 (en) Power supply circuit for motherboard
US20080012603A1 (en) Brown out detector
US20120331312A1 (en) Usb charging circuit for a computer
US8943342B2 (en) Power supply circuit employed in computer for performing different standby modes
US20110093222A1 (en) Power cycling test apparatus
US20140001852A1 (en) Power sequence circuit
US7783912B2 (en) Sequencing control circuit
US20130166809A1 (en) Drive circuit for peripheral component interconnect-express (pcie) slots
US8010721B2 (en) Universal serial bus device having driving program
TW202113546A (en) Embedded power supply with high boot/shutdown accuracy and related computer system
US7930567B2 (en) Keyboard
JP2002218645A (en) Power source protective circuit and removable disk device
CN107885304B (en) Voltage sudden change detection circuit
CN108399904B (en) Liquid crystal panel driving circuit
TW201243555A (en) Power supply adaptor circuit
US11262825B2 (en) Power supply identification
US20130155733A1 (en) Generating a fast reset-signal using a fault-protection latch
CN110992866A (en) Drive circuit of display panel and logic circuit of electronic device
CN214896522U (en) Discharge control circuit, board card and computer equipment
US7952420B2 (en) Counting apparatus
US9553447B2 (en) Electronic device and motherboard and protecting circuit of electronic device
CN204926090U (en) Control system based on developments password and USBKEY
TWI838224B (en) Power supply device with high output stability
US8250385B2 (en) Method and system of dissipating power from a power supply
TWI460578B (en) Adaptation circuit of power supply