WO2011041949A1 - Zero standby computer power supply - Google Patents

Abstract

A zero standby computer power supply (1) is disclosed, which comprises a main power supply (10) and a monitor control apparatus (20). The monitor control apparatus, which is connected to the power button of a computer host, comprises a standby monitor unit (21), a switch implementation unit (22) and a micro-power supply unit (23). The standby monitor unit monitors conditions of the power button and generates trigger signal. The switch implementation unit, which is connected between a output terminal of a alternating current power supply (2) and a input terminal of the main power supply, receives the trigger signal from the standby monitor unit and control signal from the main power supply, respectively, and controls power input from the main power supply on/off. The micro-power supply unit applies drive power to the standby monitor unit and the switch implementation unit, respectively. The technical solution as above monitors switch signal of the power button and generates the trigger signal by the standby monitor unit, controls the switch implementation unit closed/opened. Therefore, the zero standby computer power supply cuts off the power input from the main power supply in the case of standby (i.e. turning off the computer) to realize the computer with zero power consumption.

Description

 Zero standby computer power supply

Technical field

 The present invention relates to the field of power supply technologies, and in particular, to a zero standby computer power supply. Background technique

 Referring to Fig. 1, a conventional computer power supply includes a main circuit and a standby circuit. The PS-ON terminal on this power supply is connected to the motherboard. The ON/OFF terminal on the main board is connected to the switch key PWS on the main unit for monitoring the status of the key PWS. When the computer starts, the ON/OFF end of the main board receives the power-on signal of the key PWS, pulls down the voltage of the PS-ON terminal on the power supply, and the main circuit starts. The corresponding output of the power supply of ±12V, +5V, +3.3V is generated. The output voltage is for the computer to start. The main circuit must be activated after the AC power input is turned ON and the PS-ON signal is received, producing an output DC power supply for the computer to start. As long as the standby circuit has AC power input, it can generate +5Vsb power.

 Therefore, when the computer is off, although the main circuit is turned off, if the AC power is not turned off, the +5Vsb power supply is always in operation, and the power consumed is still high. Summary of the invention

 SUMMARY OF THE INVENTION One object of the present invention is to provide a zero standby computer power supply designed to reduce power consumption after a computer is turned off.

 The zero standby computer power supply of the present invention includes a main power supply, which may further include a monitoring control device, and an open key connection with the computer host, which may include:

 The standby monitoring unit can monitor the state of the open key of the computer host and generate a trigger signal; the switch execution unit is connected between the output end of the AC power source and the input end of the main power source, and can receive the trigger signal of the standby monitoring unit and the main power source Control signal, and control the power on/off of the main power source;

 The micro power unit can provide driving power for the standby monitoring unit and the switch execution unit respectively. Preferably, the above switch execution unit may include:

 The first switch is connectable between the output end of the AC power source and the input end of the main power source, and is respectively connected to the power input of the main power source;

 The second switch is connectable between the micro power supply unit and the first switch, and receives a trigger signal generated by the standby monitoring unit to perform closing/opening of the switch, and can control the on/off of the driving power of the micro power supply unit.

Preferably, the first switch may be a relay, and the relay includes an internal switch and a coil, and the internal The two ends of the switch are respectively connected to the output end of the AC power source and the input end of the main power source, and the line port is connected with the micro power source unit and the main power source, and can be driven by the power source unit and the main power source respectively to control the on/off of the internal switch.

 Preferably, the driving power source of the main power source includes a power output terminal of +12V, and the output terminal is connectable to the node N1 connected to the micro power supply unit; the +12V power source drives the closing of the first switch / disconnected, the on/off of the power input of the main power source can be controlled.

 Preferably, the standby monitoring unit includes:

 The first trigger has an input end connected to the open key of the computer host, and an output end connected to the second switch, and can receive a trigger signal generated by the state of the switch key to control the closing/opening of the second switch.

 Preferably, the first trigger may further include a set terminal connected to the main power output end to receive an output of the main power source to control the first trigger to be set.

 Preferably, the standby monitoring unit further includes a second trigger and a delay circuit, wherein the input end of the second trigger is connected to the open key of the computer host to generate a trigger signal; the input end of the delay circuit and the main power output end Connected to generate a delayed signal.

 Preferably, the standby monitoring unit is connected to the main board, and further includes an inverter, the main board includes an ON-OFF end, and the output ends of the second flip-flop and the delay circuit are connected to the ON-OFF end of the main board through the inverter. .

 Preferably, the micro power supply unit comprises a rectifier bridge, a capacitor and a transformer, and can receive an input of an alternating current power source and generate the driving power source.

 Preferably, the micro power supply unit may be a battery to generate the driving power source.

 The invention monitors the opening key switch signal through the standby monitoring unit, and generates a control signal to control the closing/opening of the switch execution unit. Therefore, in the standby (ie, the computer is turned off) condition of the zero standby computer power supply of the present invention, the AC power input of the main power source is 0, and the respective power output ends of the main power source are 0, and the computer at this time is completely turned off, and only the micro power source is The power consumption of the drive power generated by the unit (20mW), thus making the computer power supply achieve zero standby power consumption. In the running (ie, the computer is turned on) condition, the standby monitoring unit monitors the state of the switch key, and controls the AC power input of the main power source, and the computer performs normal startup. Moreover, the zero standby computer power supply of the present invention does not change the original usage mode of the computer, but only increases the monitoring control device with low cost, so that the user automatically cuts off the power input of the main power source when the computer is turned off, and the use is more convenient. DRAWINGS

 1 is a schematic structural view of a computer power supply and a main board in the prior art;

2 is a schematic structural diagram of a zero standby computer power supply and a main board according to an embodiment of the present invention; FIG. 3 is a schematic structural diagram of a switch execution unit according to an embodiment of the present embodiment; 4 is a schematic structural diagram of a standby monitoring unit according to another embodiment of the above embodiment; FIG. 5 is a schematic structural diagram of a micro power supply unit according to still another embodiment of the above embodiment;

 Fig. 6 is a timing chart showing the operation of the zero standby computer power supply in the above embodiment. The implementation, functional features, and advantages of the present invention will be further described with reference to the accompanying drawings.

detailed description

 It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

 The core idea of the present invention is to control the on/off of the AC (AC) input of the computer power source by monitoring the control device to monitor the on/off signal on the host computer.

 Referring to Fig. 2, the zero standby computer power supply of the first embodiment is proposed. The computer power source includes a main power source 10 and a monitoring control device 20. The main power source 10 includes a main circuit 11 and a standby circuit 12. After the main power supply 10 is started, the main circuit 11 outputs various DC power supplies such as ± 12V, +5V, +3.3V. The standby circuit 12 outputs +5 Vsb of standby power to provide operating voltage for the startup of the motherboard 3.

 The monitoring control device 20 includes a standby monitoring unit 21, a switch executing unit 22, and a micro power supply unit 23, which are connected to the switch key PWS of the host computer. The standby monitoring unit 21 monitors the state of the on-off key PWS of the host computer and generates a control signal. The switch execution unit 22 is connected between the AC power terminal and the input end of the main power source 10, and receives the trigger signal generated by the standby monitoring unit 21 and the output control signal of the main power source 10, respectively, to control the AC input of the main power source 10 to be turned on/ disconnect. At the same time, the AC input of peripherals such as the monitor is also turned on/off. The micro power supply unit 23 supplies drive power to the standby monitoring unit 21 and the switch execution unit 22, respectively.

The ON-OFF end of the main board 3 is connected to the standby monitoring unit 21, and the PS-ON end of the main power supply 10 is connected to the main board 3. When the computer is turned on, the standby monitoring unit 21 detects the power-on triggering action of the PWS button, the AC input of the power source 10 is turned on, and the +5Vsb power source is output, and the motherboard starts self-test. At the same time, the +5Vsb power supply also generates a power-on pulse signal through the standby monitoring unit 21, and transmits it to the ON-OFF terminal of the main board 3. After receiving the signal, the main board 3 immediately pulls down the voltage of the PS-ON terminal of the main power source 10. At this point, the main circuit 11 of the main power source 10 is activated, and the computer system starts to enter and enters the working mode of the computer. When the computer is hard-powered off, the standby monitoring unit 21 receives the shutdown signal and transmits the shutdown signal to the ON-OFF terminal of the motherboard 3. After receiving the signal, the main board 3 immediately pulls up the voltage of the PS-ON terminal of the main power source 10. At this point, the main circuit 11 of the main power source 10 is turned off, and the DC power supply outputs of the main circuit 11 are all 0, the switch of the switch execution unit 22 is turned off, the AC input of the main power source is turned off, and the computer system is turned off. When the computer During soft shutdown, the motherboard 3 will receive a shutdown signal from the computer processor and immediately pull up the PS-ON terminal of the main power supply 10. At this point, the main circuit 11 of the main power source 10 is turned off, and the DC power supply outputs of the main circuit 11 are all 0, the switch of the switch execution unit 22 is turned off, the AC input of the main power source is turned off, and the computer system is turned off.

 The invention monitors the switching signal of the key PWS through the standby monitoring unit, and generates a control signal to control the closing/opening of the switch execution unit, thereby achieving the purpose of turning on/off the AC input of the computer power when the computer is turned on/off. It greatly reduces the standby power consumption after the computer is turned off. Referring to FIG. 3, in an embodiment of the embodiment, the switch execution unit 22 includes a first switch 221 and a second switch 222. The first switch 221 is connected to the L line of the AC power supply output and the L line of the main power source 10 input. The AC input ^ of the main power source 1 ^ is turned on/off. The second switch 222 is connected between the micro power supply unit 23 and the first switch 222, and receives a control signal generated by the standby monitoring unit 21 to control the ON/OFF of the driving power supply VCC of the micro power supply unit 23.

 The second switch 222 is a trigger switch, and the trigger signal of the switch receiving the standby monitoring unit 21 can be closed/opened. In this embodiment, when the trigger signal is low, the second switch 222 is closed, and the driving power source VCC can be loaded onto the coil; when the trigger signal is high, the second switch 222 is turned off, and the driving power source cannot be loaded. On the line. The first switch 221 is a normally open type relay, which includes an internal switch and a turn. The two contacts of the internal switch are respectively connected to the L line of the AC power output and the L line of the input of the main power source 10. One end of the line is respectively connected with the power output of the second switch 222 and the main power source 10, and a certain current is generated inside. Thereby the internal switch is closed and the AC input of the main power source 10 is turned on.

 The driving power source of the above main power source 10 includes a power output terminal of +12 V, and the output terminal is connected to a node N1 connected to the micro power source unit 23 on the line. The +12V power supply provides driving power to the first switch 221 after the computer is started, so that the first switch 221 is closed and the AC input of the main power source 10 is turned on.

The working principle of the above-mentioned switch execution unit 22 is: When the computer is turned on, the standby monitoring unit 21 will detect the switch signal and generate a trigger signal Q1 according to the switch signal. After the second switch 222 receives the trigger signal, the switch is closed, and the driving power source VCC of the micro power supply unit 23 can drive the coil, so that the first switch 221 is closed, and the AC input of the main power source 10 is turned on, generating ±12V, +5V, With +3.3V output power, the computer system starts up. At the same time, the +12V power control trigger signal Q1 causes the second switch 222 to be turned off, and the coil is driven by the +12V power supply of the main power source 10 such that the first switch 221 is closed. When the computer is turned off, the main circuit 11 is turned off, and the power output terminal of +12V is 0, then the first switch 221 is turned off, and the AC input of the main power source 10 is also turned off. Referring to FIG. 4, in another embodiment of this embodiment, the standby monitoring unit 21 includes a first trigger. 211. The input terminal D1 of the flip-flop 211 is connected to the above-mentioned switch key PWS, and the output terminal Q1 is connected to the second switch 222 of the switch execution unit 22. The first flip-flop 211 receives a switch state generating trigger signal of the switch PWS, and controls the closing/opening of the second switch 222. For example, when the on-off key PWS is pressed, a low-level pulse signal will be generated, and the first flip-flop 211 will generate a low-level trigger signal according to the pulse signal, and the second switch 222 is closed.

 The set terminal S of the first flip-flop 211 is connected to the +12V power output terminal of the main power source 10. When the main power source 10 is started, the +12V power supply is input to the set terminal of the first flip-flop 211, and the output terminal Q1 always outputs a high level regardless of whether the input terminal D1 of the flip-flop is low level or high level. .

 The standby monitoring unit 21 further includes a second flip-flop 212 and a delay circuit 213. The input terminal D2 of the second flip-flop 212 is connected to the above-mentioned switch key PWS, and the output terminal is connected to the ON-OFF terminal of the computer main board 3. The input terminal of the delay circuit 213 is connected to the power output terminal of the +5Vsb of the main power source 10, and the output terminal is passed through the inverter together with the output terminal of the second flip-flop 212, and is transmitted to the ON-OFF terminal of the main board 3 of the computer. The delay circuit 213 starts immediately after receiving the power supply of +5Vsb, and generates a low-level pulse signal.

 The above standby monitoring unit 21 works as follows: When the computer is turned on, the on-off key PWS will generate a low-level pulse signal. The second flip-flop 212 generates a high-level trigger signal according to the pulse signal, and generates a low-level trigger signal after passing through the inverter, and transmits the signal to the ON-OFF end of the computer motherboard 3, but since the motherboard 3 does not have Start, so the low level trigger signal has no effect on the motherboard 3. The first flip-flop 211 will generate a low-level trigger signal according to the pulse signal, and control the second switch 222 to be closed. The driving power supply VCC of the micro power supply unit 23 can drive the first switch 221 to be closed. At this moment, the AC input of the computer power supply is turned on, and the output power of +5Vsb is immediately generated. After the main board 3 receives the power of the +5Vsb, it starts up and performs self-test. At the same time, the +5 Vsb power supply is input to the delay circuit 213 of the standby monitoring unit 21, and a low-level pulse signal is generated and transmitted to the ON-OFF terminal of the main board 3. After receiving the pulse signal generated by the delay circuit 213, the ON-OFF terminal of the main board 3 pulls down the voltage of the PS-ON terminal of the main power supply 10, and the main circuit 11 is activated to generate ±12V, +5V, +3.3V. power supply. At this moment, the first flip-flop 211 will receive a set input of +12V, generate a high-level trigger signal, and transmit it to the second switch 222 to control the second switch 222 to be turned off.

When the computer is hard-powered off, the on-off key PWS will generate a low-level pulse signal. The first flip-flop 211 is always at the output terminal Q1 because of the +12V set input, so that the input of the drive power supply VCC is always off. open. The second flip-flop 212 receives the pulse signal, and after passing through the inverter, generates a low-level pulse signal. When the ON-OFF terminal of the main board 3 receives the pulse signal, the voltage of the PS-ON terminal of the main power supply is pulled high, and the main circuit 11 is turned off, and the output terminals of the ±12V, +5V, and +3.3V power supplies are zero. At this moment, the first switch 221 of the switch execution unit 22 is turned off because the power output terminal of the +12V becomes 0, and the AC input of the main power of the computer is also disconnected, which greatly reduces the standby power consumption after the computer is turned off. Referring to FIG. 5, in still another embodiment of the embodiment, the micro power supply unit 23 includes a rectifier bridge, a capacitor, and a transformer. The AC input of 220V is converted into DC by the rectifier bridge, and then filtered by the capacitor. Finally, the VCC power supply of the low voltage is output through the transformer. Since the VCC power supply is for driving the first switch 221 of the switch execution unit 22 and the first flip-flop 211 and the second flip-flop 212 of the standby monitoring unit 21, the VCC power supply output through the processing of the micro power supply unit 23 The rated output power only needs 0.4W. Moreover, the time for driving the first switch 221 is only the time when the switch PWS is pressed to the start of the main power source 10. After the main power source 10 is started, the first switch 221 is driven by the +12 V power source generated by the main power source 10. Therefore, at other times, the VCC power supply only needs to be used to drive the first flip-flop 211 and the second flip-flop 212, and the power consumption is about 20 mW.

 The micro power supply unit 23 may also be a battery, and the VCC power supply is supplied through the battery to drive the standby monitoring unit 21 and the switch execution unit 22. Referring to FIG. 6, the working principle of the zero standby computer power supply of the present invention is as follows:

 When the standby mode enters the operation mode, the on-off key PWS is activated. Since one end of the open key PWS of the host computer is connected to the ground, one end is connected to the input ends of the first flip-flop 211 and the second flip-flop 212. Therefore, before the switch key PWS is touched, the first flip flop 211 and the second flip flop 212 will always receive a high level signal, and the output terminal Q1 is also a high level signal, and the second switch of the switch execution unit 22 222 is in the off state. At the instant when the switch key PWS is touched, the first flip flop 211 and the second flip flop 212 will receive a low level pulse signal, and the output terminal Q1 is a low level signal. The low level signal triggers the closing of the second switch 222 of the switch execution unit 22, and the driving power source VCC drives the first switch 221 to close, and the AC input of the main power of the computer is turned on, generating a power of +5 Vsb. This process uses tl.

 After the motherboard 3 receives +5Vsb power, perform the motherboard 3 self-test first. At the same time, the power of +5Vsb is input to the standby monitoring unit 21, and a delay pulse circuit 213 performs a delay of time t2 to generate a low-level pulse signal. The delay time generated by the delay circuit 213 is greater than or equal to the self-test time of the main board 3, so that after the self-test of the main board 3, the ON-OFF end of the main board 3 can receive a low-level pulse signal, and the main power supply 10 is pulled down. The voltage of the PS-ON terminal, so that the main circuit 11 of the main power supply 10 is activated, generates a power supply of ±12V, +5V, +3.3V. At this moment, the first switch 221 of the switch execution unit 22 is driven by the +12V power supply, and the set terminal of the first flip-flop 211 also receives the set input of the +12V power supply, and the output terminal Q1 is a high level signal. The drive power source VCC of the power supply unit 23 is turned on to drive the first switch 221.

 There are two ways to enter the standby mode from the running mode: one is the hard shutdown, that is, the key to open the PWS of the computer host; the other is the soft shutdown, that is, click the shutdown icon on the computer interface. The shutdown process of the two methods is described in detail below.

When the hard shutdown is used, the first trigger 211 and the second trigger 212 of the standby monitoring unit 21 Both will receive a low level pulse signal. The first flip-flop 211 always outputs a high level signal due to the set terminal of the +12V power supply of the main power source 10. The second flip-flop 212 will generate a high-level pulse signal, which passes through the inverter to generate a low trigger signal, which is transmitted to the ON-OFF terminal of the motherboard 3. After the ON-OFF terminal of the main board 3 receives the pulse signal, the voltage of the PS-ON terminal of the main power source 10 connected to the main board 3 is pulled up, so that the main circuit 11 of the main power source 10 is turned off, and the 12V, +5V, +3.3 The output of the V power supply is zero. At this point, the first switch 221 of the switch execution unit 22 is turned off because the output of the +12V power supply generated by the main circuit 11 is 0, and the AC input of the main power of the computer is also turned off.

 When a soft shutdown is used, the motherboard 3 receives a control signal from the computer processor and raises the voltage of the PS-ON terminal of the main power supply 10 connected to the main board 3. The latter process is the same as the hard shutdown process described above, and will not be described here.

 In the standby (ie, the computer is turned off) condition, the AC input of the main power of the computer is 0, and the output of each DC power generated by the main power is 0, and the computer at this time is completely closed, only The power consumption of the driving power supply VCC generated by the micro power supply unit (20mW) enables the computer power supply to achieve quasi-zero standby power consumption. At this point, the AC input to the peripheral (monitor) connected to the computer will also be disconnected. In the running (ie, computer on) condition, the standby monitoring unit monitors the status of the key PWS and controls the AC input of the computer power supply, and the computer performs normal startup. Therefore, the zero standby computer power supply of the present invention does not change the original usage mode of the computer, but only increases the cost of the low monitoring control device, so that the user automatically cuts off the power input of the main power source when the computer is turned off, which is more convenient to use. Moreover, the inventors have found that the design of the present invention can greatly save power for the user. The above description is only the preferred embodiment of the present invention, and is not intended to limit the scope of the invention, and the equivalent structure or equivalent flow transformation made by the specification and the drawings of the present invention may be directly or indirectly applied to other related The technical field is equally included in the scope of patent protection of the present invention.

Claims

Claim A zero-standby computer power supply, comprising a main power supply, characterized by further comprising: a monitoring control device, and a key connection of the computer host, comprising:  The standby monitoring unit monitors the state of the open key of the computer host and generates a trigger signal; the switch execution unit is connected between the output end of the AC power source and the input end of the main power source, respectively receiving the trigger signal of the standby monitoring unit and the main power source Controlling the signal and controlling the on/off of the power input of the main power source;  The micro power supply unit provides driving power for the standby monitoring unit and the switch execution unit respectively. 2. The zero standby computer power supply of claim 1, wherein the switch execution unit comprises:  The first switch is connected between the output end of the AC power source and the input end of the main power source, and is respectively turned on/off by the driving of the main power source and the ί power source unit, and controls the power input of the main power source to be turned on/ Disconnect  The second switch is connected between the micro power supply unit and the first switch, and receives a trigger signal generated by the standby monitoring unit to perform closing/opening of the switch, and controls on/off of the driving power supply of the micro power supply unit. 3. The zero standby computer power supply according to claim 2, wherein the first switch is a relay, and the relay comprises an internal switch and a coil, and the two ends of the internal switch are respectively connected to the output of the AC power source and the main power source. The terminal is connected to the micro power supply unit and the main power source, and is driven by the micro power supply unit and the main power source to control the on/off of the internal switch. 4. The zero standby computer power supply according to claim 3, wherein the driving power source of the main power source comprises a +12V power output terminal, and the output terminal is connected to a node connected to the micro power supply unit. On N1, the +12V power supply drives the closing/opening of the first switch to control the on/off of the power input of the main power source. The zero standby computer power supply according to any one of claims 1 to 4, wherein the standby monitoring unit comprises:  The first trigger has an input end connected to the open key of the computer host, and an output end connected to the second switch, receiving a state of the switch key to generate a trigger signal, and controlling the closing/opening of the second switch. 6. The zero standby computer power supply of claim 5, wherein the first trigger further comprises a set terminal, the set terminal is connected to the main power output end, and receives the output of the main power source to control The first trigger is set. 7. The zero standby computer power supply of claim 6, wherein the standby monitoring unit further comprises a second trigger and a delay circuit, wherein the input end of the second trigger is connected to the open key of the computer host , generating a trigger signal; the input end of the delay circuit is connected to the main power output end to generate a delay signal. The zero standby computer power supply according to claim 7, wherein the standby monitoring unit is connected to the main board, and includes an inverter, the main board includes an ON-OFF end, and the second trigger and the delay circuit are The output is connected to the ON-OFF terminal of the main board after passing through the inverter. The zero standby computer power supply according to any one of claims 1 to 4, wherein the micro power supply unit comprises a rectifier bridge, a capacitor and a transformer, receives an input of an alternating current power source, and generates the driving power source. The zero standby computer power supply according to any one of claims 1 to 4, wherein the micro power supply unit is a battery, and the drive power is generated.