TWI481156B - Power supplying device - Google Patents

Description

Power supply unit

The present invention relates to a power supply device, and more particularly to a power supply device having low standby power consumption.

Referring to the first figure, it is a circuit block diagram of a conventional power supply device. The power supply device 1 is connected to an AC power supply ACP and an electronic system PS. The power supply device 1 receives the AC power output by the AC power supply ACP, and converts the AC power to the electronic system PS. The power supply device 1 is operable to operate in a normal mode or a standby mode, wherein the normal mode operation means that the power supply device 1 must provide power required for the operation of the electronic system PS, that is, in the normal mode, connected to the power source. The electronic system PS of the supply device 1 is in a power-on state; otherwise, the standby state means that the electronic system PS is in a power-off state.

The power supply device 1 includes an electromagnetic interference filter 10, a rectifier 11, a main power converter 12, an auxiliary power converter 13, a first controller 14, a second controller 15, a power manager 16, A first optical isolator OC1, a second optical isolator OC2, a third optical isolator OC3 and a fourth optical isolator OC4.

The EMI filter 10 is electrically connected to the rectifier 11. The rectifier 11 is electrically connected to the main power converter 12 and the auxiliary power converter 13. The first controller 14 is electrically connected to the rectifier 11 and the main power converter 12, and the second controller 15 Electrically connected to the auxiliary power converter 13, The power manager 16 is electrically connected to the main power converter 12 and the auxiliary power converter 13.

The first optical isolator OC1 is electrically connected to one of the first power output terminals VA of the main power converter 12 and the first controller 14, and the second optical isolator OC2 is electrically connected to one of the auxiliary power converters 13 for standby power output Vsb. The second controller 15, the third optical isolator OC3 and the fourth optical isolator OC4 are electrically connected to the power manager 16 and the first controller 14, respectively. The first optical isolator OC1, the second optical isolator OC2, the third optical isolator OC3, and the fourth optical isolator OC4 may be, for example, optical couplers.

The power supply device 1 receives the AC power output from the AC power supply ACP. After the AC power is input to the power supply device 1, the electromagnetic interference filter 10 first filters out electromagnetic interference in the AC power, and the rectifier 11 converts the AC power output from the electromagnetic interference filter 10 into a DC power output. A Power Factor Correction circuit 110 can be added to the rectifier 11 to reduce the amount of input current.

The main power converter 12 receives the DC power output from the rectifier 11, and the main power converter 12 is controlled by the first controller 14 to change the power outputted by the first power output VA and a second power output VB. The main power converter 12 is a DC to DC converter and can be, for example, an LLC resonant power converter, a dual forward power converter, or a single forward power converter. (Single Forward Converter). The auxiliary power converter 13 receives the DC power output from the rectifier 11, and the auxiliary power converter 13 is controlled by the second controller 15 to change the output power. The accessory power converter 13 can be, for example, a flyback converter.

The main power converter 12 performs power conversion in the normal mode to convert the direct current power into the main power and is output by the first power output terminal VA and the second power output terminal VB, and is waiting In the machine mode, the power conversion is stopped and the main power is not output (that is, the first power output terminal VA and the second power output terminal VB do not output power). The auxiliary power converter 13 performs electric energy conversion in the normal mode or the standby mode to convert the direct current voltage into standby power and is outputted from the standby power output terminal Vsb. When the power supply device 1 stops the output power of the main power converter 12 in the standby mode, the power consumption of the power conversion device 1 in the standby mode can be effectively reduced to achieve power saving.

However, the power supply device 1 must include both the main power converter 12 and the auxiliary power converter 13, which makes the power supply device 1 bulky, and, in the normal mode operation, the main power converter 12 and the auxiliary power converter 13 The power conversion must be performed at the same time, resulting in an increase in energy consumption of the power supply device 1 under normal mode operation.

In view of the prior art, one aspect of the present disclosure is to provide a power supply device that has the characteristics of standby low power consumption and miniaturization.

One embodiment of the present technology provides a power supply device electrically connected to an AC power supply and an electronic system. The power supply device receives AC power output by the AC power supply and converts the AC power into the power. After being output to the electronic system, the power supply device comprises a rectifier, a power converter, a controller, a power manager and a switching component. The rectifier includes a power factor correction circuit, the rectifier is configured to convert the AC power into a DC power output, and the power factor correction circuit is used to correct the rectified DC power to reduce the input current amount; the power converter is electrically connected to the rectifier, and the power converter includes a power converter The first power output end and a standby power output end are electrically connected to the electronic system, and the power converter receives the DC power after the rectifier output reduces the current amount. The controller is electrically connected to the power converter; the power manager is electrically connected to the controller and the electronic system. Switching element Connected to the first power output, the power manager and the electronic system, the switching element is controlled according to the power manager to turn on or off the power output and transmitted by the first power output.

In other embodiments of the present technology, the power converter further includes a second power output terminal electrically connected to the switching component, and the switching component is turned on or off according to the control of the power manager by the first power output terminal and the first The power output of the two power outputs is output to the electronic system.

In another embodiment of the technical aspect, the power supply device further includes a first isolation switch electrically connected to the second power output terminal, the standby power output terminal, and the controller, and the second power output terminal and the standby power output terminal output. Power is passed to the controller through the first isolation switch.

In other embodiments of the present technology, the power supply device further includes a standby power converter and a DC-DC power converter, and the standby power converter is electrically connected to the standby power output and the power converter. The DC-DC power converter is electrically connected to the first power output end, the DC-DC power converter includes a second power output end and a third power output end, and the second power output end and the third power output end are electrically connected And a switching element that turns on or switches power outputted by the first power output, the second power output, and the third power output according to a control of the power manager.

In another embodiment of the technical aspect, the power supply device further includes a first isolation switch electrically connected to the first power output terminal and the controller, and the power outputted by the first power output terminal is transmitted to the controller through the first isolation switch. .

In other embodiments of the present technical aspect, the power supply device further includes a second isolation switch and a third isolation switch, and the second isolation switch is electrically connected to the power manager and the control The second isolation switch transmits a protection signal from the power manager to the controller. The third isolating switch is electrically connected to the power manager and the controller, and the third isolating switch transmits a control signal sent by the controller to the power manager.

In other embodiments of the present technology, the power supply device further includes an electromagnetic interference filter electrically connected to the AC power supply and the rectifier.

In other embodiments of the present technology, the power converter and the standby power converter are buck converter DC-DC power converter power converters are DC-DC power converters.

In other embodiments of the present technology, the power converter is an LLC resonant power converter, a dual forward power converter, or a single forward power converter.

In another embodiment, a power supply device is electrically connected to an AC power supply and an electronic system, and the power supply device receives AC power output by the AC power supply and performs AC power. After being converted, the output to the electronic system includes a rectifier, a power converter, a DC-DC power converter, a controller, a power manager, and a switching component. The rectifier includes a power factor correction circuit, the rectifier is used to convert the AC power into a DC power output, and the active power factor correction circuit is used to correct the rectified DC power and reduce the input current amount; the power converter is electrically connected to the rectifier, the power converter A first power output is included, and the power converter receives the DC power after the rectifier output reduces the amount of current. The DC-DC power converter is electrically connected to the first power output end, and the DC-DC output terminal comprises a second power output end, a third power output end and a standby power output end, and the standby output end is electrically connected to the electronic system. The controller is electrically connected to the power converter. The power manager is electrically connected to the controller and DC - DC power converter. The switching element is electrically connected to the first power output end, the second power output end, the third power output end, the power manager and the electronic system, and the switching element is turned on or off according to the control of the power manager by the first power output end The power output to and from the second power output and the third power output.

In another embodiment of the technical aspect, the power supply device further includes a first isolation switch, a second isolation switch, and a third isolation switch, wherein the first isolation switch is electrically connected to the first power output end and the controller, The power output from a power output is transmitted to the controller through the first isolation switch. The second isolation switch is electrically connected to the power manager and the controller, and the second isolation switch transmits a protection signal from the power manager to the controller. The third isolating switch is electrically connected to the power manager and the controller, and the third isolating switch transmits a control signal sent by the controller to the power manager.

In other embodiments of the present technology, the power supply device further includes an electromagnetic interference filter electrically connected to the AC power supply and the rectifier.

In other embodiments of the present technology, the power converter and the standby power converter are a buck converter and a DC-DC power converter.

In other embodiments of the present technology, the power converter is an LLC resonant power converter, a dual forward power converter, or a single forward power converter.

1, 2‧‧‧Power supply unit

10, 20‧‧ ‧ electromagnetic interference filter

11, 22‧‧‧Rectifier

12‧‧‧Main power converter

13‧‧‧Attach power converter

14‧‧‧First controller

15‧‧‧Second controller

16, 28‧‧‧ Power Manager

220‧‧‧Power factor correction circuit

24‧‧‧Power Converter

240‧‧‧Rectifier circuit

242‧‧‧Filter circuit

26‧‧‧ Controller

30‧‧‧Switching elements

32‧‧‧First isolation switch

34‧‧‧Second isolation switch

36‧‧‧The third isolating switch

38‧‧‧DC-DC Power Converter

40‧‧‧Standby Power Converter

ACP‧‧‧AC power supply

Cr‧‧‧Resonance Capacitor

C1, C2‧‧‧ filter capacitor

DR, DR1, DR2‧‧‧ passive switching components

D1, D2‧‧‧ Rectifier

L‧‧‧Filter Inductors

Lr‧‧‧Resonant Inductors

Np‧‧‧ primary winding

Ns‧‧‧ secondary winding

OC1‧‧‧First Optical Isolator

OC2‧‧‧Second optical isolator

OC3‧‧‧third optical isolator

OC4‧‧‧4th optical isolator

PG‧‧‧ signal output

PS‧‧‧Electronic System

PS-On‧‧‧ signal input

Q1, Q2‧‧‧ switching components

S, S1, S2‧‧‧ active switching components

T‧‧‧Transformer

VA‧‧‧first power output

VB‧‧‧second power output

VC‧‧‧ third power output

Vsb‧‧‧Standby power output

The first figure is a circuit block diagram of a conventional power supply device.

The second figure is a circuit block diagram of a power supply device according to a first embodiment of the disclosure.

The third figure is a circuit diagram of the power converter of the first embodiment of the disclosure.

The fourth figure is a circuit diagram of a power converter according to a second embodiment of the disclosure.

Figure 5 is a circuit diagram of a power converter shown in a third embodiment of the disclosure.

The sixth figure is a timing chart corresponding to the operation of the power supply device shown in the second figure.

The seventh figure is another timing chart corresponding to the operation of the power supply device shown in the second figure.

Figure 8 is a circuit block diagram of a power supply device according to a second embodiment of the disclosure.

Figure 9 is a circuit block diagram of a power supply device according to a third embodiment of the present disclosure.

The above and other objects, features, and advantages of the present invention will be better understood from the following description and appended claims.

Referring to the second figure, a circuit block diagram of a power supply device according to a first embodiment of the disclosure is shown. The power supply device 2 is electrically connected to an AC power supply ACP and an electronic system PS. The power supply device 2 receives the AC power output by the AC power supply ACP, and converts the AC power into electrical energy and transmits the AC power to the electronic system PS.

The power supply device 2 includes an electromagnetic interference filter 20, a rectifier 22, a power converter 24, a controller 26, a power manager 28, and a switching element 30. The electromagnetic interference filter 20 is electrically connected to the AC power supply ACP, and the electromagnetic interference filter 20 receives the AC power provided by the AC power supply ACP and filters out electromagnetic interference in the AC power.

The rectifier 22 is configured to convert the alternating current power output by the electromagnetic interference filter 20 into a direct current Power output. An active Power Factor Correction circuit 220 can be added to the rectifier 22 to reduce the amount of input current.

The power converter 24 is electrically connected to the rectifier 22 and the controller 26, and has a standby power output terminal Vsb, a first power output terminal VA and a second power output terminal VB. The power converter 24 receives the DC power output from the rectifier 22 and is controlled by the controller 26 to change the voltage value of the power output from the standby power output terminal Vsb, the first power output terminal VA, and the second power output terminal VB.

The power manager 28 is electrically connected to the power converter 24, the controller 26 and the electronic system PS. The power manager 28 transmits signals to the electronic system PS through a signal output terminal PG, and receives the electronic system PS through a signal input terminal PS_On. signal.

The switching element 30 is electrically connected to the power manager 28, the first power output terminal VA, the second power output terminal VB, and the electronic system PS. The switching component 30 is turned on or off according to the switch control signal sent by the power manager 28. The power output VA and the second power output VB output and transmit power to the electronic system PS.

It should be noted that the power converter 24 can be, for example but not limited to, a DC to DC converter, and can be, for example, an LLC resonant power converter (as shown in the third figure). , Dual Forward Converter (as shown in Figure 4) or Single Forward Converter (as shown in Figure 5).

Referring to the third figure, a circuit diagram of a power converter according to a first embodiment of the disclosure is shown. The power converter 24 shown in the third figure is an LLC resonant converter. The power converter 24 includes two switching elements Q1 and Q2, a resonant inductor Lr, a resonant capacitor Cr, a transformer T, a rectifier circuit 240, and A filter circuit 242.

The switching elements Q1 and Q2 are electrically connected to the rectifier 22 and the controller 26, respectively, for receiving the DC power output by the rectifier 22, and switching to the on state or the off state according to the signal provided by the controller 26, and outputting the pulsed DC signal. In the present embodiment, the switching elements Q1 and Q2 are Metal-Oxide-Semiconductor Field-Effect Transistors (MOSFETs), and the gates of the switching elements Q1 and Q2 are electrically connected to the controller 26, respectively. A diode D is connected between the drain and the source of the switching elements Q1 and Q2, and the diode D may be a parasitic diode of the switching elements Q1 and Q2.

The resonant inductor Lr is electrically connected to the switching elements Q1, Q2. In the present embodiment, the resonant inductor Lr is connected between the source of the switching element Q1 and the drain of the switching element Q2 to receive the ripple DC signal when the switching elements Q1, Q2 are alternately turned on and off. The resonant capacitor Cr is electrically connected to the resonant inductor Lr and the primary winding Np of the voltage transformer T. The resonant capacitor Cr is formed to block the DC component of the pulsating DC signal and form a magnetizing inductance with the resonant inductor Lr and the primary winding Np. Resonant circuit. In the present embodiment, the transformer T is a center tap type transformer.

The rectifier circuit 240 includes two rectifying diodes D1 and D2, and the rectifying diodes D1 and D2 are electrically connected to the secondary winding Ns of the transformer T, respectively, for converting the AC power passing through the transformer T into a component having a high frequency ripple component. DC power. The filter circuit 242 is electrically connected to the rectifier circuit 240. The filter circuit 242 can be, for example but not limited to, a CLC filter circuit, and includes a filter inductor L and filter capacitors C1 and C2 respectively connected to the two ends of the filter inductor L. The filter circuit The 242 is configured to filter out the high frequency ripple component of the DC power output from the rectifier diodes D1 and D2 and output a smooth direct current.

Referring to the fourth figure, a circuit diagram of a power converter according to a second embodiment of the disclosure is shown. The power converter 24 shown in the fourth figure is a dual forward power converter, and the power is The source converter 24 includes two active switching elements S1 and S2, two passive switching elements DR1 and DR2, a rectifying circuit 240, a filtering circuit 242 and a transformer T. The transformer T includes a primary winding Np and a secondary winding. Ns.

The active switching elements S1 and S2 are electrically connected to the rectifier 22 and the controller 26, respectively, for receiving the DC power output by the rectifier 22, and switching to the on state or the off state according to the signal provided by the controller 26, and outputting the pulsating DC signal. In the present embodiment, the active switching elements S1 and S2 are metal oxide semiconductor field effect transistors, and the gate stages of the active switching elements S1 and S2 are electrically connected to the controller 26, respectively, and actively switch the drains and sources of the elements S1 and S2. A diode D is connected between the poles, and the diode D can also be a parasitic diode of each of the active switching elements S1 and S2.

The passive switching element DR1 is connected across the active switching element S1 and the primary side winding Np, and the passive switching element DR2 is connected across the active switching element S2 and the primary side winding Np. In the present embodiment, the passive switching elements DR1 and DR2 are diodes, respectively.

The rectifier circuit 240 is composed of diodes D1 and D2 and is electrically connected to the secondary side winding Ns for converting AC power passing through the transformer T into DC power having a high frequency ripple component. The filter circuit 242 is electrically connected to the rectifier circuit 240. The filter circuit 242 can be, for example but not limited to, a CLC filter circuit, and includes a filter inductor L and filter capacitors C1 and C2 respectively connected to the two ends of the filter inductor L. The filter circuit The 242 is configured to filter out the high frequency ripple component of the DC power output from the rectifier diodes D1 and D2 and output a smooth direct current.

Referring to the fifth figure, a circuit diagram of a power converter according to a third embodiment of the disclosure is shown. The power converter 24 shown in FIG. 5 is a single forward power converter, and the power converter 24 includes an active switching element S, a passive switching element DR, and a capacitor. The device C, a resistor R, a transformer T, a rectifier circuit 240 and a filter circuit 242.

The active switching element S is electrically connected to the rectifier 22 and the controller 26 for receiving the DC power output by the rectifier 22, and switching to the on state or the off state according to the signal provided by the controller 26, and outputting the pulsating DC signal. In the present embodiment, the active switching element S is a metal oxide semiconductor field effect transistor, and the gate of the active switching element S is electrically connected to the controller 26. A diode D is connected between the drain and the source of the active switching element S, and the diode D can also be a parasitic diode of the active switching element S. The passive switching element DR and the capacitor C are connected in series and connected across the primary side winding Np of the transformer T, and the resistor R is connected in parallel with the capacitor C. In the present embodiment, the passive switching element DR is a diode.

The rectifier circuit 240 is composed of diodes D1 and D2 and is electrically connected to the secondary side winding Ns for converting AC power passing through the transformer T into DC power having a high frequency ripple component. The filter circuit 242 is electrically connected to the rectifier circuit 240. The filter circuit 242 can be, for example but not limited to, a CLC filter circuit, and includes a filter inductor L and filter capacitors C1 and C2 respectively connected to the two ends of the filter inductor L. The filter circuit The 242 is configured to filter out the high frequency ripple component of the DC power output from the rectifier diodes D1 and D2 and output a smooth direct current.

Referring to the second figure, the power supply device 2 further includes a first isolation switch 32, a second isolation switch 34 and a third isolation switch 36. The first isolation switch 32, the second isolation switch 34, and the third isolation switch 36 can be, for example but not limited to, an optical coupler.

One end of the first isolation switch 32 (signal transmitting end) is electrically connected to the standby power output terminal Vsb and the second power output terminal VB, and the other end of the first isolation switch 32 (signal receiving end) And electrically connected to the controller 26 for detecting the power outputted by the standby power output terminal Vsb and the second power output terminal VB, and transmitting the signal corresponding to the output power to the controller 26 in an isolated manner.

One end (signal transmitting end) of the second isolation switch 34 is electrically connected to the power manager 28, and the other end (signal receiving end) of the second isolating switch 34 is electrically connected to the controller 26. When the electronic system PS or the power supply device 2 is operated at an operating voltage that is too high, the operating current is too high, or the short circuit condition, the protection signal sent by the power manager 28 about overvoltage, overcurrent, or short circuit is transmitted through the second isolation switch 34. To controller 26, controller 26 can drive power converter 24 to stop power conversion.

One end (signal transmitting end) of the third isolating switch 36 is electrically connected to the controller 26, and the other end (signal receiving end) of the third isolating switch 36 is electrically connected to the power manager 28. The power manager 28 receives the control signal from the controller 26 when the power of the power converter 24 after the power conversion is normal, and sends a control signal to the electronic system PS power supply device 2 via the signal output terminal PG. normal.

Referring to the sixth figure, it is a timing chart corresponding to the operation of the power supply device shown in the second figure. In the first state, i.e., the time is t1 to t7, in which the AC power supply ACP is activated (i.e., AC_On is high) and the electronic system PS is started (i.e., PS_On is low). The switching element 30 is turned off, and the power output from the standby power output terminal Vsb of the power supply device 2, the first power output terminal VA, and the second power output terminal VB are all transmitted to the electronic system PS.

In the second state, that is, the time is t7 to t9, the AC power supply ACP is started (ie, AC_On is high), and the electronic system PS is not activated (ie, PS_On is high). The switching element 30 is turned on, and the power outputted by the standby power output terminal Vsb of the power supply device 2 can be The power is transmitted to the electronic system PS, and the power output from the first power output terminal VA and the second power output terminal VB is not transmitted to the electronic system PS because the switching element 30 is turned on.

In the third state, that is, the time is t9 to t11, the AC power supply ACP is started (ie, AC_On is high), and the electronic system PS is turned from the start to the start (ie, PS_On is turned from the high level to the low level). The switching element 30 is turned off, and the standby power output terminal Vsb of the power supply device 2, the first power output terminal VA, and the second power output terminal VB simultaneously output power to the electronic system PS.

In the fourth state, that is, after time t11, the AC power supply ACP is not activated (ie, AC_On is low), and the electronic system PS is activated (PS_On is low). When the voltage outputted by the power converter 24 is less than the first predetermined value (ie, the time is t11 to t12), the signal output terminal PG of the power supply device 2 sends a signal to the electronic system PS to notify the output of the electronic system PS power supply device 2 The power is less than the first predetermined value. When the voltage after the output of the power converter 24 is less than the second predetermined value (ie, the time is t12 to t13), the switching element 30 is turned on, and the power output from the first power output terminal VA and the second power output terminal VB cannot be transmitted to the electronic device. System PS. When the voltage output from the power converter 24 is less than the third predetermined value, the standby power output terminal Vsb is stopped to output power to the electronic system PS.

Referring to the seventh figure, another timing chart corresponding to the operation of the power supply device shown in the second figure is shown. In the first state, that is, the time is t1 to t2, the AC power supply ACP is started (ie, AC_On is high), and the electronic system PS is started (PS_On is low). When the power output from the power converter 24 is greater than a predetermined value, the standby power output terminal Vsb outputs power to the electronic system PS.

In the second state, that is, the time is t2 to t3, the AC power supply ACP is started (ie, AC_On is high), and the electronic system PS is not activated (ie, PS_On is high). switch When the component 30 is turned on, the standby power output terminal Vsb of the power supply device 2 outputs power to the electronic system, and the power output from the first power output terminal VA and the second power output terminal VB is not transmitted to the electronic system because the switching component 30 is turned on. PS means that the power supply device 2 enters a standby state.

The operations of the times t3 to t5 shown in the seventh figure are the same as the times t9 to t11 shown in the sixth figure, and the operations of the times t5 to t8 shown in the seventh figure are the same as the times t11 to t14 shown in the sixth figure. I will not repeat them here.

In summary, the power supply device 2 of the present disclosure reduces the auxiliary power converter compared to the power supply device 1 of the prior art, so that the volume of the power supply device 2 can be effectively reduced, and energy consumption can be reduced. At the same time, it can achieve the characteristics of standby low power consumption.

Referring to the eighth figure, a circuit block diagram of a power supply device according to a second embodiment of the present disclosure is shown. The power supply device 2A shown in the eighth embodiment is similar to the power supply device 2 of the first embodiment, and the same elements are denoted by the same reference numerals. It should be noted that the difference between the two is that the power supply device 2A shown in FIG. 8 further includes a DC-DC power converter 38, and the power converter 24 includes only a first power output terminal VA.

The DC-DC power converter 38 is electrically connected to the first power output terminal VA of the power converter 24 and the power manager 28. The DC-DC power converter 38 has a second power output terminal VB and a third power output terminal VC. And a standby power output terminal Vsb. The DC-DC power converter 38 receives the DC power output by the power converter 24 from the first power output terminal VA, and converts the DC power into the power, and then outputs the second power output terminal VB, the third power output terminal VC, and the standby power supply. End Vsb output. Switching element 30 electrical connection Connected to the first power output terminal VA, the second power output terminal VB and the third power output terminal VC, the switching element 30 receives the switch control signal sent by the power manager 28 to turn on or off the first power output terminal VA, The two power output terminals VB and the third power output terminal VC are outputted and transmitted to the power of the electronic system PS. The standby power output terminal Vsb is electrically connected to the electronic system PS.

Next, the first isolation element 32 is electrically connected to the first power output terminal VA to transfer the power output by the first power output terminal VA to the controller 26. The functions and related descriptions of the respective elements of the power supply device 2A are substantially the same as those of the power supply device 2 of the first embodiment, and will not be described herein. The power supply device 2A can at least achieve the same function as the power supply device 2.

Referring to FIG. 9, a circuit block diagram of a power supply device according to a third embodiment of the present disclosure is shown. The power supply device 2B shown in the ninth diagram is similar to the power supply device 2 of the first embodiment, and the same elements are denoted by the same reference numerals. It should be noted that the difference between the two is that the power supply device 2B shown in FIG. 9 further includes a DC-DC power converter 38 and a standby power converter 40, and the power converter 24 includes a first power output. The terminal VA and a standby power output terminal Vsb.

The DC-DC power converter 38 is electrically connected to the first power output terminal VA of the power converter 24 and the power manager 28. The DC-DC power converter 38 has a second power output terminal VB and a third power output terminal VC. . The DC-DC power converter 38 receives the DC power output by the power converter 24 from the first power output terminal VA, and converts the DC power to the second power output terminal VB and the third power output terminal VC. The switching element 30 is electrically connected to the first power output terminal VA, the second power output terminal VB and the third power output terminal VC, and the switching component 30 receives the switch control signal sent by the power manager 28 to turn on or off the output by the first power source. Terminal VA, second power output terminal VB and The third power output VC outputs and transmits power to the electronic system PS.

The standby power converter 40 is electrically connected to the power converter 24, the power manager 28, and the electronic system PS. The standby power converter 40 receives the DC power outputted from the standby power output terminal Vsb of the power converter 24, and converts the DC power into electrical energy and outputs the DC power to the electronic system PS. Next, the first isolation element 32 is electrically connected to the first power output terminal VA to transfer the power output by the first power output terminal VA to the controller 26. The functions and related descriptions of the respective elements of the power supply device 2B are substantially the same as those of the power supply device 2 of the first embodiment, and will not be described herein. The power supply device 2B can at least achieve the same function as the power supply device 2.

However, the above description is only a preferred embodiment of the present disclosure, and the scope of the present invention is not limited thereto, that is, the equivalent variation and modification of the scope of the patent application of the present invention should still belong to the patent of the present invention. Covers the scope of intent to protect.

2‧‧‧Power supply unit

20‧‧‧Electromagnetic interference filter

22‧‧‧Rectifier

220‧‧‧Power factor correction circuit

24‧‧‧Power Converter

26‧‧‧ Controller

28‧‧‧Power Manager

30‧‧‧Switching elements

32‧‧‧First isolation switch

34‧‧‧Second isolation switch

36‧‧‧The third isolating switch

ACP‧‧‧AC power supply

PG‧‧‧ signal output

PS‧‧‧Electronic System

PS-On‧‧‧ signal input

VA‧‧‧first power output

VB‧‧‧second power output

Vsb‧‧‧Standby power output

Claims (14)

A power supply device is electrically connected to an AC power supply and an electronic system, and the power supply device receives the AC power output by the AC power supply, and converts the AC power to the electronic system, and outputs the power to the electronic system. The device comprises: a rectifier comprising a power factor correction circuit for converting AC power into a DC power output, and correcting the rectified DC power by the power factor correction circuit to reduce the input current amount; Electrically connected to the rectifier, the power converter includes a first power output end and a standby power output end, the standby power output end is electrically connected to the electronic system, and the power converter receives the rectifier output and reduces the current amount. a DC power; a controller electrically coupled to the power converter; a power manager electrically coupled to the controller and the electronic system; and a switching component electrically coupled to the first power output, the power manager And the electronic system, the switching element is turned on according to the control of the power manager Cutting off the power output from the first output terminal of the power supply. The power supply device of claim 1, wherein the power converter further comprises a second power output terminal electrically connected to the switching element, the switching element being turned on or off according to the control of the power manager The first power output and the second power output output and transmit power to the electronic system. The power supply device of claim 2, further comprising a first isolation switch, the electrical connection Connected to the second power output terminal, the standby power output terminal, and the controller, and the power outputted by the second power output terminal and the standby power output terminal is transmitted to the controller through the first isolation switch. The power supply device of claim 1, further comprising: a standby power converter electrically connected to the power converter and the standby power output; and a DC-DC power converter electrically connected to the first power source An output terminal, the DC-DC power converter includes a second power output end and a third power output end, wherein the second power output end and the third power output end are electrically connected to the switching component, and the switching component is configured according to the The power manager controls to turn on or switch the power output by the first power output, the second power output, and the third power output. The power supply device of claim 4, further comprising a first isolation switch electrically connected to the first power output terminal and the controller, wherein the output power of the first power output terminal is transmitted to the first isolation switch to The controller. The power supply device of claim 3 or 5, further comprising: a second isolating switch electrically connected to the power manager and the controller, the second isolating switch transmitting the protection signal sent by the power manager to The controller; and a third isolating switch electrically connected to the power manager and the controller, the third isolating switch transmitting a control signal sent by the controller to the power manager. The power supply device of claim 6, further comprising an electromagnetic interference filter electrically connected to the alternating current power supply and the rectifier. The power supply device of claim 7, wherein the power converter is a DC-DC power converter. The power supply device of claim 8, wherein the power converter is a DC-DC power converter, and the DC-DC power converter is an LLC resonant power converter. A dual forward power converter or a single forward power converter. A power supply device is electrically connected to an AC power supply and an electronic system, and the power supply device receives the AC power output by the AC power supply, and converts the AC power to the electronic system, and outputs the power to the electronic system. The device comprises: a rectifier comprising a power factor correction circuit for converting AC power into a DC power output, and correcting the rectified DC power by the power factor correction circuit to reduce the input current amount; Electrically coupled to the rectifier, the power converter includes a first power output terminal, the power converter receives DC power after the rectifier output reduces the amount of current; and the DC-DC power converter is electrically connected to the first power source The output end, the DC-DC power converter comprises a second power output end, a third power output end and a standby power output end, the standby power output end is electrically connected to the electronic system; a controller is electrically connected to the a power converter; a power manager electrically connected to the controller, the DC-DC a converter and the electronic system; and a switching component electrically connected to the first power output, the second power output, the third power output, the power manager, and the electronic system, the switching component is based The power manager controls to turn on or off power output by the first power output, the second power output, and the third power output to the electronic system. The power supply device of claim 10, further comprising: a first isolation switch electrically connected to the first power output terminal and the controller, wherein the output power of the first power output terminal is transmitted through the first isolation switch To the controller; a second isolating switch electrically connected to the power manager and the controller, the second isolating switch transmitting a protection signal sent by the power manager to the controller; and a third isolating switch electrically connected to the power source a manager and the controller, the third isolation switch transmitting a control signal sent by the controller to the power manager. The power supply device of claim 11, further comprising an electromagnetic interference filter electrically connected to the alternating current power supply and the rectifier. The power supply device of claim 12, wherein the power converter is a DC-DC power converter. The power supply device of claim 13, wherein the power converter is a DC-DC power converter, and the DC-DC power converter is an LLC resonant power converter, a dual forward power converter, or a single cis Directional power converter.