CN105093971B - The control method of power system, Linear Control module and switch element - Google Patents
The control method of power system, Linear Control module and switch element Download PDFInfo
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- CN105093971B CN105093971B CN201410196099.7A CN201410196099A CN105093971B CN 105093971 B CN105093971 B CN 105093971B CN 201410196099 A CN201410196099 A CN 201410196099A CN 105093971 B CN105093971 B CN 105093971B
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/70—Regulating power factor; Regulating reactive current or power
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
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Abstract
A kind of power system,The control method of Linear Control module and switch element,Linear Control module is electrically connected to a power supply device,Power supply device includes an AC/DC power conversion module,One switch element,One control signal output,One main power source output terminal and a standby power output terminal,AC/DC power conversion module has a power output end,Switch element is electrically connected to the power output end of AC/DC power conversion module and main power source output terminal,Standby power output terminal is electrically connected to the power output end of AC/DC power conversion module,Linear Control module includes a control and switchs,One first resistor device,One capacitor and a second resistance device,Control switch is electrically connected to control signal output,First resistor device is electrically connected to control switch,Capacitor is electrically connected to the power output end and first resistor device of AC/DC power conversion module,Second resistance device is electrically connected to switch element,First resistor device and capacitor.
Description
Technical field
The present invention relates to a kind of power system, and more particularly to a kind of power supply supply system with low standby power loss
System.
Background technology
Cooperation is refering to Fig. 1, for the circuit diagram of existing ON-OFF control circuit.ON-OFF control circuit 1 is electrically connected to a direct current
Between power vd C and a switch element 10, ON-OFF control circuit 1 is determined to control being turned on and off for switch element 10
Determine whether DC power supply VDC is conducted to an electronic system PS.Wherein, electronic system PS is electrically connected by output resistor Ro1 and Ro2
The drain electrode of switch element 10 is connected to, it is power output end to define the endpoint that electronic system PS is connected with output resistor Ro1 and Ro2
Vo1 and Vo2.
ON-OFF control circuit 1 includes a sense resistor RS, a control switch Q, a resistor R and a capacitor C.Sensing
The end point of resistor RS is electrically connected to the source electrode of DC power supply VDC and switch element 10, another endpoint of sense resistor RS
It is electrically connected to the drain electrode of control switch Q and the grid of switch element 10.The source electrode of control switch Q is electrically connected to ground terminal, and control is opened
The grid for closing Q is electrically connected to a control signal output Sin.The end point of resistor R and capacitor C is electrically connected to control switch
Another endpoint of the grid of Q, resistor R and capacitor C are then electrically connected to ground terminal, profess it, and resistor R and capacitor C are in simultaneously
Connection connection, to filter out the noise of the signal of control signal output Sin outputs.
When the moment that electronic system PS starts, control signal output Sin sends out a control signal to control and switchs Q, with
Drive control switch Q conductings.In the same time, switch element 10 can also turn on, and profess it, be received in ON-OFF control circuit 1
During control signal, control switch Q and switch element 10 almost turn within the same time, however, this but causes DC power supply VDC
Voltage instantaneous rapid drawdown, as shown in Figure 2.
The content of the invention
It is an object of the invention to provide a kind of Linear Control module, the Linear Control module be electrically connected to one with for
The power supply device of DC power supply is answered, the electronic system to solve to be electrically connected to power supply device is starting moment, directly
Galvanic electricity source leads to the problem of rapid drawdown.
This technology aspect provides a kind of Linear Control module, is electrically connected to a power supply device in an embodiment,
It is defeated that power supply device includes an AC/DC power conversion module, a switch element, a control signal output, a main power source
Outlet and a standby power output terminal, AC/DC power conversion module have a power output end, and switch element is electrically connected to
The power output end of AC/DC power conversion module and main power source output terminal, standby power output terminal are electrically connected to AC/DC electricity
The power output end of source modular converter.Linear Control module includes a control switch, a first resistor device, a capacitor and one the
Two resistors, control switch are electrically connected to control signal output；First resistor device is electrically connected to control switch；Capacitor is electrically connected
It is connected to the power output end and first resistor device of AC/DC power conversion module；Second resistance device is electrically connected to AC/DC power supply
Power output end, switch element, first resistor device and the capacitor of modular converter.
Thereby, switch element can be made linearly to turn on, the Department of Electronics that power supply device is avoided to be attached to one
It unites the moment started, rapid drawdown occurs for the voltage value of power output end output.
In the other embodiment of this technology aspect, Linear Control module further includes a discharge circuit, be electrically connected to friendship/
Power output end, control signal output, capacitor, first resistor device and the second resistance device of DC power supply modular converter.It puts
Circuit includes a switching device and a 3rd resistor device, switching device are electrically connected to the electric power of AC/DC power conversion module
Output terminal and the control signal output, 3rd resistor device are electrically connected to switching device, first resistor device, capacitor and the second electricity
Hinder device.Switching device can be for example metal oxide semiconductcor field effect transistor.Discharge circuit can provide capacitor and accelerate electricity
The discharge time of container, avoid electronic system in a short time repeated priming when, power output end output voltage occur rapid drawdown
The problem of.
In another embodiment of this technology aspect, Linear Control module further includes a protection switch, be electrically connected to friendship/
Power output end, switching device and the capacitor of DC power supply modular converter；Protection switch may be, for example, diode.Protection switch
It is to allow capacitor when short circuit occurs for electronic system, still can carries out discharging action, therefore when the short circuit problem of electronic system is arranged
When removing and being again started up, the voltage of power output end output will not lead to the problem of rapid drawdown.
Another technology aspect of disclosure of the present invention is to provide a kind of power system, the power system
Electric power is provided and gives an electronic system, the power system can start moment, power output end to avoid electronic system
The voltage of output leads to the problem of rapid drawdown.
This technology aspect provides a kind of power system in an embodiment, is electrically connected to AC power supply
Device and an electronic system, power system include：One AC/DC power conversion module, a switch element, a power management
Device, a controller, a main power source output terminal, a standby power output terminal and a Linear Control module.AC/DC power supply modulus of conversion
Block is electrically connected to AC power supply, and AC/DC power conversion module includes a power output end；Switch element is electrically connected to
Power output end；Power supervisor is electrically connected to electronic system and switch element, and power supervisor is exported comprising a control signal
End；Controller is electrically connected to power supervisor and AC/DC power conversion module；Main power source output terminal is electrically connected to switch element
And electronic system；Standby power output terminal is electrically connected to power output end and electronic system.Linear Control module includes a control
Switch, a first resistor device, a capacitor and a second resistance device, control switch are electrically connected to control signal output；First
Resistor is electrically connected to control switch；Capacitor is electrically connected to the power output end and the first electricity of AC/DC power conversion module
Hinder device；Second resistance device be electrically connected to the power output end of AC/DC power conversion module, switch element, first resistor device and
The capacitor.
Thereby, switch element can be made linearly to turn on, the moment that power system is avoided to start in electronic system, electricity
Rapid drawdown occurs for the voltage value of power output terminal output.
In the other embodiment of this technology aspect, Linear Control module further includes a discharge circuit, be electrically connected to friendship/
Power output end, control signal output, capacitor, first resistor device and the second resistance device of DC power supply modular converter.It puts
Circuit includes a switching device and a 3rd resistor device, switching device are electrically connected to the electric power of AC/DC power conversion module
Output terminal and control signal output, switching device may be, for example, metal oxide semiconductcor field effect transistor.3rd resistor device
It is electrically connected to switching device, first resistor device, capacitor and second resistance device.Discharge circuit can provide capacitor speed-up capacitor
Discharge time of device, avoid electronic system in a short time repeated priming when, rapid drawdown occurs for the voltage of power output end output
Problem.
In another embodiment of this technology aspect, Linear Control module further includes a protection switch, be electrically connected to friendship/
Power output end, switching device and the capacitor of DC power supply modular converter；Protection switch may be, for example, diode.Protection switch
System allows capacitor when short circuit occurs for electronic system, still can carry out discharging action, therefore when the short circuit problem of electronic system is arranged
When removing and being again started up, the voltage of circuit output end output will not lead to the problem of rapid drawdown.
In addition, power system further includes an isolated location, power supervisor and controller are electrically connected to.AC/DC
Power conversion module includes an EMI FILTER, a rectifier and a DC/DC power converter, EMI Filtering
Device is electrically connected to AC power supply；Rectifier is electrically connected to EMI FILTER；DC/DC power converter is electrically connected
Rectifier is connected to, DC/DC power converter includes power output end.
The another technology aspect of disclosure of the present invention is to provide a kind of control method of switch element, to make switch
Turn on to element linear.
This technology aspect is in an embodiment, the control method of switch element, a switch element to be made linearly to lead
Logical, switch element is electrically connected to the primary side of an AC/DC power conversion module.AC/DC power conversion module has an electricity
Power output terminal, power output end are electrically connected to a standby power output terminal, and switch element is electrically connected to power output end and a master
Power output end, switch element determine whether the electric power of power output end output is transferred to main power source output terminal.Switch element
Control method includes：One driving voltage is provided；It is sequentially provided multiple pulse width modulation signals；Switch pulse width modulation signal
Work period, the work period of pulse width modulation signal is made to increase to 100% by 0% according to sequential, wherein, pulse width tune
Varying signal is so that switch element linearly turns on.The work period of pulse width modulation signal by 0% increase to 100% when
Between be 20 milliseconds.
Below in conjunction with the drawings and specific embodiments, the present invention will be described in detail, but not as a limitation of the invention.
Description of the drawings
Fig. 1 illustrates the circuit block diagram of existing power system；
Fig. 2 be corresponding diagram 1 DC power supply and power output end voltage oscillogram；
Fig. 3 illustrates the circuit block diagram of the power system of present invention；
Fig. 4 illustrates the circuit diagram of the Linear Control module of present invention first embodiment；
Fig. 5 illustrates the circuit diagram of the Linear Control module of present invention second embodiment；
Fig. 6 corresponding diagrams 4 and power output end and the oscillogram of the voltage of main power source output terminal output shown in Fig. 5；
Fig. 7 illustrates the linear control signal of switch element.
Wherein, reference numeral
1 ON-OFF control circuit
3 power systems
5 power supply devices
50 AC/DC power conversion modules
500 EMI FILTERs
502 rectifiers
503 circuit of power factor correction
504 power supply changeover devices
506 power supervisors
52 controllers
54 switch elements
56 power supervisors
58 isolated locations 7,7a Linear Control modules
70 discharge circuits
ACP AC power feeding mechanisms
C, C1 capacitors
D protection switch
PS electronic systems
Q, Q1 controls switch
R resistors
Ro1, Ro2 main power source output resistor
Ro3 standby power output resistors
R1 first resistor devices
RS second resistance devices
R3 3rd resistor devices
VDC DC power supplies
Vdc power output ends
Vo1, Vo2 power output end
V1, V2 main power source output terminal
Vsb standby power output terminals
Specific embodiment
Accompanying drawings are refer to, the above and additional objects, features and advantages of disclosure of the present invention will pass through the present invention
The property explained below of the preferred embodiment of content and nonrestrictive describe in detail are more fully understood.
Cooperation is refering to Fig. 3, the circuit block diagram of the power system of present invention.Power system 3 includes
One power supply device 5 and a Linear Control module 7.Linear Control module 7 is first to control the one of power supply device 5 switch
The working condition of part 54.
Power supply device 5 is electrically connected between an AC power supply ACP and an electronic system PS, is handed over to receive
The AC power of power supply unit ACP outputs is flowed, and electronic system PS is transferred to after AC power is carried out electric energy conversion.
Power supply device 5 includes an AC/DC power conversion module 50, a controller 52, switch element 54, a power supply
Manager 56, an isolated location 58, at least multiple main power source output resistor Ro1 and Ro2, a main power source output terminal, one is standby
A power supply output resistor Ro3 and standby power output terminal Vsb.In the present embodiment, power supply device 5 is to include two
Main power source output terminal V1 and V2 are as illustrative example.
AC/DC power conversion module 50 includes an EMI FILTER 500, a rectifier 502 and power supply conversion
Device 504.EMI FILTER 500 is electrically connected to AC power supply ACP, and rectifier 502 is electrically connected to electromagnetic interference filter
Ripple device 500 and controller 52, power supply changeover device 504 are electrically connected to rectifier 502 and controller 52.EMI FILTER 500
The AC power of AC power supply ACP outputs is received, and filters out the electromagnetic interference composition being present in AC power.Rectification
Device 502 is will to be converted to direct current power by EMI FILTER 500 and through filtering out the AC power of electromagnetic interference composition, whole
A PFC (power factor correction) circuit 503 can be included by flowing device 502, to reduce output electricity
Flow.
Power supply changeover device 504 is DC/DC power converter 504, and power supply changeover device 504 is received through rectifier 502
Direct current power, and change according to the control of controller 52 voltage value of the electric power of power output end Vdc outputs, such as promoted
The voltage value (boosting) of the electric power of power output end Vdc outputs or the voltage value (decompression) for reducing power output end Vdc outputs.Electricity
Source converter 504 can such as (but not limiting) be LLC resonant modes power supply changeover device, dual forward power switcher (Dual
Forward Converter) or single forward power switcher (Single Forward Converter).
Switch element 54 is electrically connected to the power output end Vdc of AC/DC power conversion module 50.Main power source output resistance
Device Ro1 and Ro2 are electrically connected in switch element 54 and main power source output terminal V1 and V2, main power source output terminal V1 and V2 electrical connection
The power output end of AC/DC power converter module 50 is electrically connected in electronic system PS, standby power output resistor Ro3
Vdc and standby power output terminal Vsb.
In addition, it is to be noted that：The power system 3 of the present invention not can only include two main power source output terminal V1
And V2, in actual implementation, user can increase the quantity of main power source output terminal according to actual demand, at the same time it is also necessary to right
The quantity for the main power source output resistor for being connected to main power source output terminal should be increased.
In the present embodiment, the voltage quasi position of the electric power of standby power output terminal Vsb outputs can be identical to main power source
The voltage quasi position of the voltage of power level of output terminal V1 and V2 output or the electric power of standby power output terminal Vsb outputs can be with
It differs in the voltage of power level of main power source output terminal V1 and V2 output.When the electric power that standby power output terminal Vsb is exported
Voltage quasi position is differed when the voltage of power level of main power source output terminal V1 and V2 output, can be converted in AC/DC power supply
It is that a booster circuit or reduction voltage circuit are set between module 50 and standby power output resistor Ro3, it is standby to be promoted or reduced
The voltage level of the electric power of power output end Vsb outputs.
Power supervisor 56 is electrically connected to AC/DC power conversion module 50, electronic system PS and isolated location 58.Power supply
Manager 56 includes a signal output part PG, a signal input part PS_on and a control signal output Sin, signal output part
PG and signal input part PS_on is electrically connected is electrically connected to Linear Control mould in electronic system PS, control signal output Sin
Block 7.Signal output part PG is transferred to electronic system PS, signal input part PS_on to the signal for exporting power supervisor 56
To receive the signal that electronic system PS is sent.
Linear Control module 7 is electrically connected to switch element 54 and power supervisor 56.Linear Control module 7 is to receive power supply
One control signal of the control signal output Sin outputs of manager 56, and according to control signal to select to turn off or on out
Element 54 is closed, and then cuts off or turns on and exported by main power source output terminal V1 and V2 to the electric power of electronic system PS.
Isolated location 58 is electrically connected to power supervisor 56 and controller 52, isolator to send power supervisor 56
Signal be transferred to controller 52, in addition, the signal that controller 52 is sent isolator can also be transferred to electricity by isolated location 58
Source manager 56.
In practical operation, when switch element 54 is closed, then by the power output end of AC/DC power conversion module 50
The direct current power of Vdc outputs can not be transferred to electronic system PS by main power source output terminal V1 and V2；Conversely, when switch element 54
During unlatching, the direct current power of the power output end Vdc outputs of AC/DC power conversion module 50 can pass through main power source output terminal
V1 and V2 is transferred to electronic system PS.In addition, no matter switch element 54 is to be turned on and off, standby power output terminal Vsb can
Output power is to electronic system PS.
Cooperation is refering to Fig. 4, for the circuit diagram of the Linear Control module of present invention first embodiment.In order to facilitate saying
Bright, Fig. 4 shows switch element 54, main power source output resistor Ro1 and Ro2, main power source output terminal V1 and V2, treats electromechanics simultaneously
Source output terminal Vsb and standby power output resistor Ro3.Meanwhile Fig. 4 also shows the electricity of AC/DC power conversion module 50
The control signal output Sin of power output terminal Vdc and power supervisor 56.In the present embodiment, switch element 54 is with P
Type metal oxide semiconductor field-effect transistor (Metal-Oxide-Semiconductor Field-Effect
Transistor, MOSFET) as illustrative example, when actual implementation, is then not limited.
Linear Control module 7 includes a control and switchs Q1, a first resistor device R1, a capacitor C1 and a second resistance device
RS, control switch Q1 are electrically connected to control signal output Sin, and first resistor device R1 is electrically connected to control switch Q1, capacitor
C1 is electrically connected to the power output end Vdc of AC/DC power conversion module 50 and switch element 54, second resistance device RS electrical connections
In capacitor C1, first resistor device R1 and switch element 54, and it is parallel to capacitor C1.
In the present embodiment, it is N-type metal oxide semiconductcor field effect transistor to control switch Q1, and controls switch Q1
Grid be electrically connected to control signal output Sin, the drain electrode of control switch Q1 is electrically connected to first resistor device R1, control switch
The source electrode of Q1 is electrically connected to ground terminal.During actual implementation, control switch Q1 can also be other electronic components with handoff functionality.
Cooperation is refering to Fig. 3 and Fig. 4, when electronic system PS starts, the signal input part PS_On of power supervisor 56 simultaneously
The enabling signal of electronic system PS submittings can be received.Afterwards, the control signal output Sin of power supervisor 56 sends out a control
The control of signal processed to Linear Control module 7 switchs Q1, to drive control switch Q1 conductings.When control switch Q1 conductings, capacitance
Device C1 is started to charge up, then the voltage value rise between 54 grid of switch element and source electrode.Secondly, when control switch Q1 conductings,
First resistor device R1 and second resistance device R2 form bleeder circuit, therefore by properly configuring first resistor device R1 and second resistance
The resistance value of device RS, it is possible to the voltage difference between 54 grid of switch element and source electrode is controlled, switch element 54 to be controlled to lead
It is logical, while also it is avoided that switch element 54 is damaged when bearing excessive voltage.When switch element 54 turns on, main power source output terminal V1
And V2 output powers are to electronic system PS.
By the use of capacitor C1, first resistor device R1 and second resistance device RS, it can cause 54 source electrode of switch element
And the voltage difference at grid both ends is in gentle and linearly rises, and switch element 54 is avoided to be led in electronic system PS startup moments
It is logical, thus, it is possible to avoid the voltage value that power output end Vdc is exported that moment rapid drawdown occurs when electronic system PS starts
Situation.
Cooperation is refering to Fig. 6, the voltage value of the power output end Vdc outputs shown in solid for corresponding diagram 3, and dotted line is shown pair
Answer the voltage value of main power source the output terminal V1 and V2 of Fig. 3.Fig. 2 is compared, the voltage of the power output end Vdc outputs shown in Fig. 6 exists
The problem of moment that electronic system PS starts is there is no occurring moment rapid drawdown, can provide the stabilization that power system 3 uses
Degree, avoids power system 3 from generating malfunction due to voltage dip.Therefore the Linear Control module 7 of present invention really may be used
The feelings of moment rapid drawdown occur to be effectively prevented from the voltage value of power output end Vdc outputs in the electronic system PS moments started
Shape.
Conversely, when electronic system PS is not actuated (when electronic system PS operates in holding state), power supervisor 56
Control signal output Sin sends out a control signal to the control signal input Sin of Linear Control module 7.Linear Control mould
Block 7 receives aforementioned control signals, and drives control switch Q1 cut-offs.When control switch Q1 cut-offs, then switch element 54 ends, main
Power output end V1 and V2 unregulated power export；It professes, only standby power output terminal Vsb output powers to electronic system PS.
Thereby, when electronic system PS is not actuated, main power source output terminal V1 and V2 will not provide electric power and give electronic system PS,
And electric power of only standby power output terminal Vsb supplies electronic system PS when holding state, thus, can effectively reach
To energy-saving effect.
Cooperation is refering to Fig. 5, for the circuit diagram of the Linear Control module of present invention second embodiment.In order to facilitate saying
Bright, Fig. 5 shows switch element 54, main power source output resistor Ro1 and Ro2, main power source output terminal V1 and V2, treats electromechanics simultaneously
Source output terminal Vsb and standby power output resistor Ro3.Meanwhile Fig. 5 also shows the electricity of AC/DC power conversion module 50
The control signal output Sin of power output terminal Vdc and power supervisor 56.
In addition, the Linear Control module 7a of present embodiment is similar with the Linear Control module 7 of foregoing first embodiment,
And identical element marking is with identical symbol.The Linear Control module 7a of present embodiment and the linear control of first embodiment
The difference of molding block 7 is that the control module 7a of present embodiment further includes a discharge circuit 70.
Discharge circuit 70 is electrically connected to the power output end Vdc of AC/DC power conversion module 50, control signal output
Sin, capacitor C1 and first resistor device R1, discharge circuit 70 is to the discharge path as capacitor C1.
Discharge circuit 70 is electrically connected to AC/DC comprising a switching device Q2 and 3rd resistor a device R3, switching device Q2
Power output end Vdc, the control signal output Sin of power conversion module 50 and control switch Q1, and 3rd resistor device R3 is electrically connected
It is connected to control switch Q1, first resistor device R1, second resistance device RS and capacitor C1.In the present embodiment, switching device Q2
Transistor is imitated for metal oxide field, the grid of switching device Q2 is electrically connected to control signal output Sin and control switch Q1,
The source electrode of switching device Q2 is electrically connected to the power output end Vdc of AC/DC power conversion module 50, the drain electrode of switching device Q2
It is electrically connected to 3rd resistor device R3.
Discharge circuit 70 provides one discharge path of charge being stored in capacitor C1, completes to discharge with speed-up capacitor device C1
Action.Thus, can to avoid power system 3 when electronic system PS is again started up after closing in the short time, because
Capacitor C1 is not fully discharged and so that switch element 54 can not be turned on linearly, the voltage that power output end Vdc is caused to export
Generation moment rapid drawdown.
In addition, Linear Control module 7a further includes a protection switch D, AC/DC power conversion module 50 is electrically connected to
Power output end Vdc, switching device Q2 and capacitor C1.In the present embodiment, protection switch D such as (but do not limit be) two
Pole pipe, and the anode of protection switch D2 is electrically connected to power output end Vdc, the cathode of protection switch D is electrically connected to switching device
Q2 and capacitor C1.When short circuit occurs for electronic system PS, power output end Vdc generates High-current output, and protection switch D2 can
It can not effectively be discharged to avoid capacitor C1 when short circuit and power output end Vdc output high currents occur for electronic system PS
Situation generates, and implies that protection switch D2 can allow capacitor C1 still can pass through electric discharge when short circuit occurs for electronic system PS
Circuit 70 discharges, and therefore, when the short-circuit conditions of electronic system PS exclude and are again started up, switch element 54 can linearly
Conducting avoids the moment that the voltage value that power output end Vdc is exported starts in electronic system PS that the situation of moment rapid drawdown occurs.
In addition, the present invention more provides a kind of control method of switch element, the control method of switch element be suitable for Fig. 4 and
The circuit framework of Linear Control module shown in Fig. 5.The control method of the switch element is used for controlling being electrically connected to AC/DC
There is the electric power for being located at primary side to export for the secondary switch element surveyed of power conversion module, AC/DC power conversion module 50
End, as shown in Figure 3.
Switch element receives the electric power of power output end output, and when electronic system PS starts, makes main power source output terminal
It exports foregoing electric power and is transferred to electronic system PS, to supply the operation electric power of electronic system PS in the start-up conditions；And in electronics
When system PS operates in holding state, stop output main power source output terminal output power to electronic system PS.
The control method of this switch element is used for controlling the on off state of switch element 54, and switch element 54 is made to present linearly
It opens, switch element 54 is made to operate in ESD protection area (safe operating area), and then avoids 54 mistake of switch element
Heat and damage.The control method of the switch element 54 provides a driving voltage first, and provides multiple pulse widths according to sequential
Modulation (Pulse Width Modulation) control signal gives switch element 54.Switch the work of such pulse width modulation signal
Make the cycle, the work period for making pulse width modulation signal is to increase to 100% by 0% according to sequential, as shown in fig. 7, making driving
Voltage presentation linearly increases, and uses and switch element 54 is driven linearly to turn on.In the present embodiment, the work of control signal
It is about 20 milliseconds (ms) that cycle increases to 100% time by 0%.
Certainly, the present invention can also have other various embodiments, without deviating from the spirit and substance of the present invention, ripe
It knows those skilled in the art and makes various corresponding changes and deformation, but these corresponding changes and change in accordance with the present invention
Shape should all belong to the protection domain of appended claims of the invention.
Claims (11)
1. a kind of Linear Control module, is electrically connected to a power supply device, which includes：One AC/DC electricity
Source modular converter, a switch element, a control signal output, a main power source output terminal and a standby power output terminal, hand over/straight
Flowing power conversion module has a power output end, which is electrically connected to the electricity of the AC/DC power conversion module
Power output terminal and the main power source output terminal, the standby power output terminal are electrically connected to the electricity of the AC/DC power conversion module
Power output terminal, which is characterized in that the Linear Control module includes：
One control switch, is electrically connected to the control signal output；
One first resistor device is electrically connected to control switch；
One capacitor is electrically connected to the power output end and the first resistor device of the AC/DC power conversion module；And
One second resistance device, be electrically connected to the power output end of the AC/DC power conversion module, the switch element, this
One resistor and the capacitor.
2. Linear Control module according to claim 1, which is characterized in that further include a discharge circuit, be electrically connected to this
The power output end of AC/DC power conversion module, the control signal output, the capacitor, the first resistor device and should
Second resistance device.
3. Linear Control module according to claim 2, which is characterized in that the discharge circuit includes：
One switching device is electrically connected to the power output end and the control signal output of the AC/DC power conversion module；
And
One 3rd resistor device is electrically connected to the switching device, the first resistor device, the capacitor and the second resistance device.
4. Linear Control module according to claim 3, which is characterized in that the switching device is metal-oxide semiconductor (MOS)
Field-effect transistor.
5. Linear Control module according to claim 4, which is characterized in that further include a protection switch, be electrically connected to this
The power output end, the switching device and capacitor of AC/DC power conversion module.
6. Linear Control module according to claim 5, which is characterized in that the protection switch is diode.
7. a kind of power system has the Linear Control module described in claim 1~6 any one, is electrically connected to one
AC power supply and an electronic system, which is characterized in that the power system includes：
One AC/DC power conversion module, is electrically connected to the AC power supply, which includes
One power output end；
One switch element is electrically connected to the power output end；
One power supervisor is electrically connected to the electronic system and the switch element, and it is defeated which includes a control signal
Outlet；
One controller is electrically connected to the power supervisor and the AC/DC power conversion module；
One main power source output terminal is electrically connected to the switch element and the electronic system；And
One standby power output terminal is electrically connected to the power output end and the electronic system.
8. power system according to claim 7, which is characterized in that further include an isolated location, be electrically connected to this
Power supervisor and the controller, the signal that the power supervisor is sent isolator is transferred to the controller, and isolate
The signal that the controller is sent is transferred to the power supervisor by ground.
9. power system according to claim 8, which is characterized in that the AC/DC power conversion module includes：
One EMI FILTER is electrically connected to the AC power supply；
One rectifier is electrically connected to the EMI FILTER；And
One DC/DC power converter is electrically connected to the rectifier, and it is defeated which includes the electric power
Outlet.
10. a kind of control method of switch element, a switch element to be made linearly to turn on, which is electrically connected to one
The primary side of AC/DC power conversion module, the AC/DC power conversion module have a power output end, electric power output
End is electrically connected to a standby power output terminal, which is electrically connected to the power output end and a main power source output terminal, should
Switch element determines whether the electric power of power output end output is transferred to main power source output terminal, which is characterized in that switch member
The control method of part includes：
One driving voltage is provided；
Multiple pulse width modulation signals are provided according to sequential；And
Switch the work period of the plurality of pulse width modulation signal, make work period of the plurality of pulse width modulation signal according to
Sequential increases to 100% by 0%,
Wherein, the plurality of pulse width modulation signal causes the switch element linearly to turn on.
11. the control method of switch element according to claim 10, which is characterized in that the pulse width modulation signal
Work period increases to for 100% time as 20 milliseconds by 0%.
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| CN107449953B (en) * | 2016-05-31 | 2020-01-07 | 群光电能科技股份有限公司 | Input voltage power-off detection device and power supply with same |
| KR102598320B1 (en) * | 2019-02-18 | 2023-11-06 | 현대자동차주식회사 | Power converting apparatus |
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