CN208112515U - Power supply device with fan full-speed operation switching switch - Google Patents
Power supply device with fan full-speed operation switching switch Download PDFInfo
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- CN208112515U CN208112515U CN201820614195.2U CN201820614195U CN208112515U CN 208112515 U CN208112515 U CN 208112515U CN 201820614195 U CN201820614195 U CN 201820614195U CN 208112515 U CN208112515 U CN 208112515U
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Abstract
A kind of power supply device with fan full-speed operation switching switch includes a transformer, a rectifier, a power switch, a master controller, an output rectification and filter, a fan control unit and a fan；Transformer includes a main winding, a secondary windings and an auxiliary winding；Rectifier is electrically connected to an alternating current alternating current and main winding；Power switch is electrically connected to main winding；One master controller is electrically connected to power switch to control switching of the power switch between on state and stopper；Output rectification and filter are electrically connected to secondary windings；Fan control unit is electrically connected to auxiliary winding and includes switching switch；Fan is electrically connected to fan control unit.When the switch is closed, fan control unit drives fan to rotate at full speed.
Description
Technical field
The utility model is the power supply device switched about one with fan full-speed operation switching, and more particularly to
In a kind of power supply unit for having function of controlling fan rotating speed.
Background technique
In order to power supply device can smoothly be radiated, heat is removed for generating air-flow in wherein will be installed fan
Thermal energy caused by source is in hot environment for a long time to avoid electronic component therein and damages.
Fan of the past configuration in power supply device is all the environment temperature through detection electronic component or fan periphery
Degree, and when environment temperature improves, improves revolving speed in a manner of increasing fixed rotating speed per unit time, however in this way and can not
Dissipate in real time and rapidly the thermal energy largely generated.
Utility model content
For problem described in prior art, the power supply supply with fan full-speed operation switching switch of the utility model
Switching of the fan control unit configuration one for forcing fan to carry out full speed rotation in device is switched to promote solution thermal energy power.
A kind of power supply device with fan full-speed operation switching switch is provided according to the utility model, receives one
Electric main simultaneously generates an output voltage, and includes a transformer, a rectifier, a power switch, a master controller, an output
Rectification and filter, a fan control unit and a fan.Transformer include a mutually isolated main winding, a secondary windings and
One auxiliary winding；Rectifier is electrically connected to electric main and main winding；Power switch is electrically connected to main winding；Master controller is electrically connected
Power switch is connected to control switching of the power switch between on state and stopper；Output rectification and filter are electrically connected
It is connected to secondary windings and the voltage for being electromagnetically coupled to secondary windings is rectified and filtered to generate output voltage；Fan control
Unit includes a switching switch；Switch switchgear distribution between auxiliary winding and fan, fan receiving when switching closes the switch
Auxiliary winding provide one of boost voltage and carry out full speed rotation.
In an embodiment, which further includes a driver, connect with the switching switch in parallel, when this is cut
When changing switch unlatching, which receives a pulse width modulation signal of driver offer and carries out non-full speed rotation.
In an embodiment, the master controller and the driver are electrically connected to the auxiliary winding to receive boost voltage work
For operating voltage.
In an embodiment, which is further included：
One first diode is configured between switching switch and the fan；And
One second diode, is electrically connected between the fan and a DC voltage, and the level of the DC voltage is auxiliary lower than this
The level for the boost voltage for helping winding to provide, when the switching, which switchs, opens, which receives through second diode
The DC voltage and carry out non-full speed rotation.
In an embodiment, the anode of the first diode is electrically connected to switching switch, the cathode of the first diode
It is electrically connected to the fan, the anode of second diode is electrically connected to the DC voltage, the cathode electrical connection of second diode
In the fan.
In an embodiment, which is further included：
One first resistor device is electrically connected to the auxiliary winding to receive the boost voltage；And
One second resistor is connected in series with the first resistor device,
Wherein, which is electrically connected to the contact between the first resistor device and the second resistor to receive this
The DC voltage that boost voltage, the first resistor device and second resistor cooperation provide.
In an embodiment, an isolation feedback unit is further included, is electrically connected to the output rectification and filter and the master control
Information relevant to the output voltage is fed back to the master controller by device processed.
In an embodiment, switching switch is opened fan when closing the switch with the switching and is operated in opposite logic.
In an embodiment, switching switch is opened fan when closing the switch with the switching and is operated in identity logic.
Another power supply device with fan full-speed operation switching switch is provided according to the utility model, is received
One electric main simultaneously generates an output voltage, and includes a transformer, a rectifier, a power switch, a master controller, one defeated
Rectification and filter, a fan control unit and a fan out.Transformer includes a mutually isolated main winding, a secondary windings
An and auxiliary winding；Rectifier is electrically connected to electric main and main winding；Power switch is electrically connected to main winding；Master controller electricity
Power switch is connected to control switching of the power switch between on state and stopper；Output rectification and filter electricity
It is connected to secondary windings and the voltage for being electromagnetically coupled to secondary windings is rectified and filtered to generate output voltage.Fan control
Unit processed includes that a driver and a switching switch, driver are electrically connected to auxiliary winding to receive a boost voltage, and switching is opened
It is powered-down to be connected to driver.Fan has an inside equivalent resistance, and one end is electrically connected to auxiliary winding to receive boost voltage,
The other end is electrically connected to switching and switchs non-one end being connected with driver；Fan carries out turning at full speed when switching switch is opened
It is dynamic, and non-full speed revolving speed is carried out when switching closes the switch.
In an embodiment, which improves when the switching is switched and opened so that the fan turn at full speed
It is dynamic, and when switching closes the switch, reduces so that the fan carries out non-full speed rotation
In an embodiment, an isolation feedback unit is further included, is electrically connected to the output rectification and filter and the master control
Information relevant to the output voltage is fed back to the master controller by device processed.
In an embodiment, switching switch is opened fan when closing the switch with the switching and is operated in opposite logic.
In an embodiment, switching switch is opened fan when closing the switch with the switching and is operated in identity logic.
The beneficial effects of the utility model：It is configured in the power supply device of the utility model for forcing fan to carry out
The switching switch of rotation at full speed can promote fan to rotate at full speed to promote solution thermal energy power and solution thermal velocity.
Detailed description of the invention
Fig. 1 is painted the power supply supply with fan full-speed operation switching switch according to the utility model first embodiment
The circuit block diagram of device；
Fig. 2 is painted the power supply supply with fan full-speed operation switching switch according to the utility model second embodiment
The circuit block diagram of device；And
Fig. 3 is painted the power supply supply with fan full-speed operation switching switch according to the utility model third embodiment
The circuit block diagram of device.
Wherein appended drawing reference is：
10,10a, 10b ... have the power supply device of fan full-speed operation switching switch
101 ... primary sides
102 ... primary sides
104 ... bridge rectifiers
106 ... master controllers
108 ... power switch
110 ... output rectifications and filter
1102 ... diodes
1104 ... capacitors
112 ... isolation feedback units
120 ... fans
122,122a, 122b ... fan control unit
1220 ... switching switches
1222 ... drivers
1224 ... first diodes
1226 ... second diodes
FB ... feedback signal
GNDI ... input ground end
GNDO ... exports ground terminal
LA ... auxiliary winding
LP ... main winding
LS ... secondary windings
OUT+, OUT- ... output end
The internal equivalent resistance of Rin ...
R1 ... first resistor device
R2 ... second resistor
VAC ... electric main
VDD ... DC voltage
VIN ... input voltage
VOUT ... output voltage
VAUX ... boost voltage
Specific embodiment
Fig. 1 is painted the power supply supply with fan full-speed operation switching switch according to the utility model first embodiment
The circuit block diagram of device.In Fig. 1, the power supply device (hereinafter referred to as " power supply with fan full-speed operation switching switch
Feeding mechanism ") 10 it can be divided into the primary side 101 and primary side 102 for being galvanically isolated (galvanic insolated)；Primary side
101 are electrically connected to electric main VAC, and primary side 102 can be to the electronic device (not shown) for being connected to output end OUT+, OUT-
Output voltage Vout is provided.
Power supply unit 10 includes a mutually isolated main winding LP, a secondary windings LS, an auxiliary winding LA, a bridge-type
Feedback unit is isolated in rectifier 104, a master controller 106, a power switch 108, one output rectification and filter 110, one
112, a fan 120 and a fan control unit 122.Main winding LP, secondary windings LS and auxiliary winding LA cooperation constitute one and become
Depressor (not another label), main winding LP and secondary windings LS cooperation are to be electromagnetically coupled to primary side for the voltage of primary side 101
102, auxiliary winding LA can be used to provide the element operations such as master controller 106 and fan control unit 122 in power supply unit 10
The operating voltage of Shi Suoxu.In the present invention, main winding LP and auxiliary winding LA configuration is in primary side 101, secondary windings
LS is configured in primary side 102.
Bridge rectifier 104, master controller 106 and power switch 108 are configured at primary side 101.104 electricity of bridge rectifier
It is connected to electric main VAC；After electric main VAC is rectified via bridge rectifier 104, input voltage VIN is generated.Main winding LP
Receive input voltage VIN.
Master controller 106 can control the turn-on time of power switch 108 to change the electric current for flowing through main winding LP；Such one
Come, transformer can be from input voltage VIN energy storage, and releasing from primary side 102 can be to establish output voltage Vout.More specifically,
Output rectification filter device 110 be electrically connected secondary windings LS, and by the voltage for being electromagnetically coupled to secondary windings LS carry out rectification and
Filtering, to generate output voltage Vout.
Output rectification and filter 110 may include the diode 1102 and a capacitor for filtering for rectification
Device 1104.The first end of secondary windings LS is electrically coupleable to the anode of diode 1102, and second end is electrically connected to output ground terminal
GNDO；Capacitor 1104 is electrically connected between the cathode and output ground terminal GNDO of diode 1102.The cross-pressure of capacitor 1104 is made
For output voltage Vout.
The cathode and capacitor 1104 that isolation feedback unit 112 is electrically connected to diode 1102 are to receive output voltage
Vout, and feedback signal FB is generated according to output voltage Vout.Feedback signal FB, which is relevant to, is connected to output end OUT+, OUT-
The output voltage Vout of electronic device demand.Isolation feedback unit 112 can for example (be schemed by the illuminating part configured in primary side 102
In do not show) and configuration primary side 101 receipts light part constitute, illuminating part and receive light part cooperation will be relevant to output voltage Vout
Feedback signal FB is transferred to primary side 101 from 102 electrical isolation of primary side, occurs to avoid primary side 101 and primary side 102
Electrical Interference.
Master controller 106 is electrically connected to auxiliary winding LA and isolation feedback unit 112, receives from the auxiliary of auxiliary winding LA
Help voltage VAUX and feedback signal FB.Operating voltage of the boost voltage VAUX as master controller 106.106 basis of master controller
Feedback signal FB generates a control signal and exports to power switch 108, to control power switch 108 on state and cut-off
Switching between device reaches the function of changing the electric current for flowing through main winding LP, and then adjustable output voltage Vout.
Fan control unit 122 is electrically connected to auxiliary winding LA and fan 120, receives the boost voltage on auxiliary winding LA
VAUX and the revolving speed for controlling fan 120.Boost voltage VAUX can be used as the operating voltage of fan control unit 122.Want special herein
Do not mentionlet alone bright, in the present embodiment, operating voltage needed for fan control unit 122 is identical to the work of master controller 106
Voltage, and the turn ratio of auxiliary winding LA and main winding LP can allow the level of boost voltage VAUX to be identical to through design appropriate
The level of operating voltage needed for master controller 106 and fan control unit 122；However, in actual implementation, master controller 106
Operating voltage level may differ from fan control unit 122 operating voltage level, and master controller 106 and auxiliary around
A voltage regulator (voltage can be additionally configured between group LA or between fan control unit 122 and auxiliary winding LA
Regulator), such as DC/DC electric pressure converter, to provide the function of boost or depressurization for master controller 106 or wind
Control unit 122 is fanned to power.
In Fig. 1, fan control unit 122 includes a switching switch 1220 and a driver 1222；Switch switch 1220
One end be electrically connected to auxiliary winding LA to receive boost voltage VAUX, the other end is electrically connected to fan 120.Driver 1222 with
Switching switch 1220 is connected in parallel.
In operation, if the operating temperature inside power supply device 10 is lower than a predetermined value, switching switch 120 is opened
(turn-off), then fan 120 receives the driving signal of the output of driver 1222 and rotates.Driver 1222 can be for example to produce
A pulse width modulation signal is given birth to change the revolving speed of fan；In general, the duty cycle of pulse width modulation signal is bigger,
Then the revolving speed of fan 120 is faster.Herein it should be particularly noted that, driver 1222 can have temperature-monitoring function, and can be in electricity
When operating temperature inside source supply device 10 is lower than aforementioned predetermined value, the temperature value monitored according to itself adjusts pulse width
The duty cycle of modulating signal changes the revolving speed of fan 120, to provide good antipyretic response for power supply device 10.
If the operating temperature inside power supply device 10 is greater than or equal to a predetermined value, switching switch 1220 is closed
(turn-on), drive fan 120 carry out full speed rotation, use avoid power supply device 10 break down because of heat storage or
Damage.In an embodiment of the utility model, switching switch 1220 is closed the (work i.e. inside power supply device 10
Temperature be greater than or equal to aforementioned predetermined value) when with switching switch 1220 unlatching the (operating temperature inside power supply device 10
Lower than aforementioned predetermined value) when fan 120 can be in identity logic operating condition.In the another embodiment of the utility model
In, the fan 120 when opening when switching switch 1220 is closed with switching switch 1220 can be in opposite logic operating condition.
Although preceding take off paragraph so that whether the operating temperature inside power supply device 10 reaches predetermined value to allow switching to switch
1220 closures are opened；But in actual implementation, also it is not excluded for being with the output voltage of power supply device 10 and/or output electricity
Flow the decision condition as switching 1220 closure or openness of switch.
Fig. 2 is painted the power supply supply with fan full-speed operation switching switch according to the utility model second embodiment
The circuit block diagram of device.(hereinafter referred to as " power supply supplies the power supply device with fan full-speed operation switching switch of Fig. 2
Answer device ") 10a is similar to the power supply device 10 recorded in foregoing first embodiment, and identical component mark is with phase
Same symbol；The difference of the two is the fan control unit 122a of present embodiment by a switching switch 1220, one the 1st
Pole pipe 1224 and one second diode 1226 are constituted.
In Fig. 2, one end of switching switch 1220 is electrically connected to auxiliary winding LA to receive boost voltage VAUX, the other end
It is electrically connected to the anode of first diode 1224；The cathode of first diode 1224 is electrically connected to fan 120.Second diode
1226 anode is electrically connected to a DC voltage VDD, and cathode is electrically connected to fan 120.In the present embodiment, DC voltage
The level of VDD is lower than the level of boost voltage VAUX, and when the switching closure of switch 1220 (turn-on) allows boost voltage VAUX
When being conducted to fan 120, fan 120 can be driven to rotate at full speed.
In addition, fan control unit 122a further includes a first resistor device R1 and second resistor R2, Deng to it is auxiliary
Voltage VAUX cooperation is helped to provide DC voltage VDD.More specifically, first resistor device R1 and second resistor R2 is connected in series,
The non-one end being connected with second resistor R2 first resistor device R1 is connected to boost voltage VAUX, and second resistor R2 is non-with the
One end that one resistor R1 is connected is electrically connected to input ground end GNDI.
In operation, when switching the unlatching of switch 1220 (turn-off), boost voltage AUX is through first resistor device R1 and the
The DC voltage VDD generated after two resistor R2 partial pressure is transferred to fan 120 by the second diode 1226, uses and drives fan
120 rotations.The level for being attributed to boost voltage VAUX is higher than the level of DC voltage VDD, therefore when switching the unlatching of switch 1220
120 revolving speed of fan lower than switching switch 1220 closure when 120 revolving speed of fan.Other components of power supply device 10a
Function and related description, actually identical as power supply device 10, it will not be described here.Power supply device 10a at least may be used
Reach function identical with power supply device 10.
Fig. 3, which is painted, according to the power supply device of the utility model third embodiment there is fan full-speed operation switching to open
The circuit block diagram of the power supply device of pass.The power supply with fan full-speed operation switching switch of the drawn formula of Fig. 3 supplies dress
The power supply device 10 that (hereinafter referred to as " power supply device ") 10b is similar to the drawn formula of foregoing first embodiment is set, and
Identical component mark is with identical symbol；The difference of the two is that the fan control unit 122b of present embodiment is and fan
One of 120 internal equivalent resistance Rin cooperations change 120 revolving speed of fan.
In Fig. 3, fan control unit 122b includes a switching switch 1220 and a driver 1222；Fan 120 has
Internal equivalent resistor Rin.One end of switching switch 1220 is connected to driver 1222, and the other end is connected to internal equivalent resistance
Rin；The other end of internal equivalent resistance Rin is connected to auxiliary winding LA to receive boost voltage VAUX.The also electricity of driver 1222
Auxiliary winding LA is connected to receive boost voltage VAUX as operating voltage.
In operation, when switching the unlatching of switch 1220 (turn-off), the inside equivalent resistance Rin of fan 120 is corresponding
Ground improves, and fan 120 is promoted to rotate at full speed.Relatively, when switching the closure of switch 1220 (turn-on), the inside of fan 120
Resistance Rin is accordingly decreased, and fan 120 is promoted to reduce revolving speed.The function of other components of power supply device 10b with mutually speak on somebody's behalf
Bright, actually identical as power supply device 10, it will not be described here.Power supply device 10b at least can reach to be supplied with power supply
Answer the identical function of device 10.
Although the utility model is disclosed above with embodiment, so it is not intended to limit the utility model, any ripe
This those skilled in the art is practised, without departing from the spirit and scope of the utility model, when can be used for a variety of modifications and variations, therefore this is practical
Novel protection scope should be defined by the scope of the appended claims.
Claims (14)
1. a kind of power supply device with fan full-speed operation switching switch receives an electric main and generates an output electricity
Pressure, which is characterized in that this have fan full-speed operation switching switch power supply device include：
One transformer includes a mutually isolated main winding, a secondary windings and an auxiliary winding；
One rectifier is electrically connected to the electric main and the main winding；
One power switch is electrically connected to the main winding；
One master controller is electrically connected to the power switch to control the power switch cutting between on state and stopper
It changes；
One output rectification and filter are electrically connected to the secondary windings and carry out the voltage for being electromagnetically coupled to the secondary windings whole
Stream and filtering are to generate the output voltage；
One fan control unit includes a switching switch；And
One fan, between the auxiliary winding and the fan, which connects the switching switchgear distribution when switching closes the switch
Full speed rotation is carried out by the boost voltage that the auxiliary winding provides.
2. the power supply device as described in claim 1 with fan full-speed operation switching switch, which is characterized in that the wind
Fan control unit further includes a driver, connect with the switching switch in parallel, and when the switching, which switchs, opens, which receives should
Driver provide a pulse width modulation signal and carry out non-full speed rotation.
3. the power supply device as claimed in claim 2 with fan full-speed operation switching switch, which is characterized in that the master
Controller and the driver are electrically connected to the auxiliary winding to receive the boost voltage as operating voltage.
4. the power supply device as described in claim 1 with fan full-speed operation switching switch, which is characterized in that the wind
Fan control unit further includes：
One first diode is configured between switching switch and the fan；And
One second diode, is electrically connected between the fan and a DC voltage, the level of the DC voltage lower than the auxiliary around
The level for the boost voltage that group provides, when the switching, which switchs, opens, which receives straight by this of second diode
Galvanic electricity presses and carries out non-full speed rotation.
5. the power supply device as claimed in claim 4 with fan full-speed operation switching switch, which is characterized in that this
The anode of one diode is electrically connected to switching switch, and the cathode of the first diode is electrically connected to the fan, the two or two pole
The anode of pipe is electrically connected to the DC voltage, and the cathode of second diode is electrically connected to the fan.
6. the power supply device as described in claim 4 or 5 with fan full-speed operation switching switch, which is characterized in that
The fan control unit further includes：
One first resistor device is electrically connected to the auxiliary winding to receive the boost voltage；And
One second resistor is connected in series with the first resistor device,
Wherein, which is electrically connected to the contact between the first resistor device and the second resistor to receive the auxiliary
The DC voltage that voltage, the first resistor device and second resistor cooperation provide.
7. the power supply device as claimed in claim 6 with fan full-speed operation switching switch, which is characterized in that more wrap
Containing an isolation feedback unit, it is electrically connected to the output rectification and filter and the master controller, it will be related to the output voltage
Information feed back to the master controller.
8. the power supply device as claimed in claim 7 with fan full-speed operation switching switch, which is characterized in that this is cut
The fan that switch is opened when closing the switch with the switching is changed to operate in opposite logic.
9. the power supply device as claimed in claim 7 with fan full-speed operation switching switch, which is characterized in that this is cut
The fan that switch is opened when closing the switch with the switching is changed to operate in identity logic.
10. a kind of power supply device with fan full-speed operation switching switch receives an electric main and generates an output
Voltage, which is characterized in that this have fan full-speed operation switching switch power supply device include：
One transformer includes a mutually isolated main winding, a secondary windings and an auxiliary winding；
One rectifier is electrically connected to the electric main and the main winding；
One power switch is electrically connected to the main winding；
One master controller is electrically connected to the power switch to control the power switch cutting between on state and stopper
It changes；
One output rectification and filter are electrically connected to the secondary windings and carry out the voltage for being electromagnetically coupled to the secondary windings whole
Stream and filtering are to generate the output voltage；
One fan control unit includes：
One driver is electrically connected to the auxiliary winding to receive a boost voltage；And
One switching switch, is electrically connected to the driver；And
One fan has an inside equivalent resistance, and one end of the inside equivalent resistance is electrically connected to the auxiliary winding to receive this
Boost voltage, the other end of the inside equivalent resistance are electrically connected to the switching and switch non-one end being connected with the driver,
Wherein, which carries out full speed rotation when the switching is switched and opened, and carries out non-full speed when the switching closes the switch
Revolving speed.
11. the power supply device that wind as claimed in claim 10 has fan full-speed operation switching switch, which is characterized in that
The internal equivalent resistance improves when the switching is switched and opened so that the fan carries out full speed rotation, and when the switching closes the switch
It reduces so that the fan carries out non-full speed rotation.
12. the power supply device as claimed in claim 11 with fan full-speed operation switching switch, which is characterized in that more
Comprising an isolation feedback unit, it is electrically connected to the output rectification and filter and the master controller, it will be with the output voltage phase
The information of pass feeds back to the master controller.
13. the power supply device as claimed in claim 12 with fan full-speed operation switching switch, which is characterized in that should
Switching switch is opened fan when closing the switch with the switching and is operated in opposite logic.
14. the power supply device as claimed in claim 12 with fan full-speed operation switching switch, which is characterized in that should
Switching switch is opened fan when closing the switch with the switching and is operated in identity logic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820614195.2U CN208112515U (en) | 2018-04-26 | 2018-04-26 | Power supply device with fan full-speed operation switching switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820614195.2U CN208112515U (en) | 2018-04-26 | 2018-04-26 | Power supply device with fan full-speed operation switching switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208112515U true CN208112515U (en) | 2018-11-16 |
Family
ID=64117363
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820614195.2U Active CN208112515U (en) | 2018-04-26 | 2018-04-26 | Power supply device with fan full-speed operation switching switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208112515U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113131743A (en) * | 2019-12-31 | 2021-07-16 | 奇高电子股份有限公司 | Isolated power supply and secondary side control circuit thereof |
-
2018
- 2018-04-26 CN CN201820614195.2U patent/CN208112515U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113131743A (en) * | 2019-12-31 | 2021-07-16 | 奇高电子股份有限公司 | Isolated power supply and secondary side control circuit thereof |
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