CN107306091A - Power supply change-over device and its wake-up voltage adjusting process - Google Patents
Power supply change-over device and its wake-up voltage adjusting process Download PDFInfo
- Publication number
- CN107306091A CN107306091A CN201610255738.1A CN201610255738A CN107306091A CN 107306091 A CN107306091 A CN 107306091A CN 201610255738 A CN201610255738 A CN 201610255738A CN 107306091 A CN107306091 A CN 107306091A
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- Prior art keywords
- voltage
- wake
- power supply
- over device
- supply change
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33507—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters
- H02M3/33523—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters with galvanic isolation between input and output of both the power stage and the feedback loop
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0003—Details of control, feedback or regulation circuits
- H02M1/0006—Arrangements for supplying an adequate voltage to the control circuit of converters
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
A kind of power supply change-over device and its wake-up voltage adjusting process, wake-up voltage adjusting process are comprised the following steps：First, the output current of fixed power source conversion equipment；Sense the actual wake-up voltage that power supply change-over device departs from pulse interval pattern；Default wake-up voltage relatively is adjusted according to actual wake-up voltage and default wake-up voltage again, so that presetting wake-up voltage is same as actual wake-up voltage.
Description
Technical field
The present invention relates to power converter topology, and more particularly to a kind of make multiple Power converts of same size
The method that device has the wake-up voltage of identical disengaging pulse interval pattern.
Background technology
The features such as exchange type power conversion equipment is because with lightweight, small volume and efficiency high, is widely used
In electronic system and household electrical appliance such as communication, controls.With the new line of awareness of saving energy, various countries start to electricity
Power consumption of the supply changeover device in light running makes higher requirement.
When electronic system is operated in underloading, power supply change-over device can be made to enter pulse interval pattern (burst
Mode), to reduce power attenuation.More specifically, when power supply change-over device enters pulse interval pattern,
The switching frequency of grid control signal of power switch in transmission power supply change-over device can be reduced, and allow power supply
Conversion equipment exports discontinuous electric current, and efficiency is improved to be effectively reduced power attenuation.
However, the discontinuous current of power supply change-over device output can cause to be arranged on inside power supply change-over device
Inductor and capacitor occur to resonate and produce noise.Further, because being limited to component error value so that
Indicate what inductor, capacitor and discontinuous current inside the power supply change-over device of same size resonated
Frequency is differed, and produces different noise results.
In addition, power supply change-over device is grasped in the high switching frequency that heavy duty is operated into by the low handover frequency of underloading
The wake-up voltage of (or departing from pulse interval pattern for power supply change-over device) is as foregoing member when making
Part error amount and have difference, and produce different light load effects.
The content of the invention
The purpose of the present invention, being that offer is a kind of can make power supply change-over device depart from the pre- of pulse interval pattern
If the method for wake-up voltage adjustment.
A kind of wake-up voltage adjusting process of power supply change-over device is provided according to the present invention, is comprised the following steps：
First, the output current of fixed power source conversion equipment；Sense power supply change-over device and depart from pulse interval pattern
Actual wake-up voltage；Relatively default wake up electric to adjust according to actual wake-up voltage and default wake-up voltage again
Pressure, so that default wake-up voltage is same as actual wake-up voltage.
The present invention separately provides a kind of power supply change-over device, includes power transfer module, control unit and can power transformation
Hinder device.Control unit is electrically connected to power transfer module, and control unit is provided with whether judge power supply change-over device
Depart from the default wake-up voltage of pulse interval pattern；Variable resistance is electrically connected to the control unit；Work as power supply
When the actual wake-up voltage of conversion equipment is different from default wake-up voltage, called out according to actual wake-up voltage and presetting
The comparison of awake voltage is to adjust the resistance value of variable resistance, so that default wake-up voltage is same as actual wake-up
Voltage.
Below in conjunction with the drawings and specific embodiments, the present invention will be described in detail, but not as to the present invention's
Limit.
Brief description of the drawings
Fig. 1 illustrates the circuit block diagram of the power supply change-over device according to first embodiment of the invention；
Fig. 2 illustrates the circuit diagram of the power transfer module according to first embodiment of the invention；And
Fig. 3 illustrates the circuit block diagram of the power supply change-over device according to second embodiment of the invention.
Wherein, reference
10 power supply change-over devices
100 power transfer modules
102 rectification units
120 control units
122 operator schemes control pin
124 internal circuits
140 variable resistances
20 power supplys
30 electronic installations
Cr resonant capacitors
Cf output filters
D diodes
D1, D2 commutation diode
IN inputs
Lr resonant inductors
OUT output ends
Q1, Q2 power switch
Wp armature windings
Ws secondary windings
Embodiment
The structural principle and operation principle of the present invention are described in detail below in conjunction with the accompanying drawings：
Fig. 1 is refer to, it illustrates the circuitry block of the power supply change-over device according to first embodiment of the invention
Figure.Power supply change-over device 10 includes power transfer module 100, control unit 120 and variable resistance 140.
Power supply change-over device 10 includes input IN and output end OUT, and input IN is electrically connected to power supply 20,
Output end OUT is electrically connected to electronic system 30.Electronic system 30 may be, for example, PC, and be available for behaviour
Make in underloading and heavy duty；Wherein, the load electric power of the eating during operation of electronic system 30 underloading operates in weight less than it
Load electric power is eaten during load.
When electronic system 30 operates in underloading, electronic system 30 eats load electric power reduction, power supply change-over device
10 enter pulse interval pattern, to reduce output power；Thereby, the power attenuation of power supply change-over device 10
Just it can be effectively reduced, and efficiency can be improved.When electronic system 30 operates in heavy duty, electronic system 30
Eat load electric power to improve, power supply change-over device 10 departs from pulse interval pattern and (and can be for example and enter pulse width
Changing mode), output power is improved to eat load in response to electronic system 30.
Power transfer module 100 is connected to input IN and output end OUT, and may be, for example, that Fig. 2 is painted
The LLC resonant mode power transfer modules shown.Fig. 2 illustrates the Power convert according to first embodiment of the invention
The circuit diagram of module, and for convenience of explanation, Fig. 2 also shows control unit 120.In fig. 2, it is electric
Source modular converter 100 includes power switch Q1 and Q2, resonant capacitor Cr, resonant inductor Lr, change
Depressor T, rectification unit 102 and output filter Cf.
Power switch Q1, Q2 may be, for example, mos field effect transistor
(Metal-Oxide-Semiconductor Field-Effect Transistor, MOSFET).Power is opened
The grid for closing Q1, Q2 is electrically connected in control unit 120, power switch Q1, Q2 drain electrode and source electrode
Between be connected to diode D, diode D can also be power switch Q1, Q2 parasitic diode.
In addition, power switch Q1 drain electrode and power switch Q2 source electrode are connected to input IN.
Power switch Q1, Q2 receive the electric power that power supply 20 as shown in Figure 1 is provided, and according to control unit
120 control signals provided between on or off state to switch, and output ripple direct current signal.It is humorous
The capacitor Cr that shakes is connected between power switch Q1 source electrode and power switch Q2 drain electrode, with power
The when reception pulsating direct current signal of Q1, Q2 alternate conduction and cut-off is switched, resonant inductor Lr is to be connected to
Between resonant capacitor Cr and voltage device T armature winding Wp.Resonant capacitor Cr is except to obstruct
Outside the DC component of pulsating direct current signal, and with resonant inductor Lr and armature winding Wp magnetizing inductance shape
Into resonance circuit.
Rectification unit 102 includes commutation diode D1 and D2, is electrically connected to transformer T secondary windings Ws,
Direct current power the alternating electromotive force by transformer T to be converted to tool dither composition.Output filtering
Device Cf may be, for example, the capacitor shown in Fig. 2；Output filter Cf is electrically connected to rectification unit 102, its
To filter out the dither composition for the direct current power that rectification unit 102 is exported and export stable direct current.
Referring to Fig. 1 and Fig. 2, control unit 120 is electrically connected to power transfer module 100, and according to
The operation of power transfer module 100 is controlled according to the operator scheme and corresponding electricity needs of electronic system 30
Pattern.More specifically, control unit 120 can be for example and eat load electric power using perceive electronic system 30
To judge that electronic system 30 is operate within underloading or heavy duty；When electronic system 30 operates in underloading, power supply
Conversion equipment 10 enters pulse interval pattern, and the control signal of the output low handover frequency of control unit 120 is given
Power switch Q1, Q2, to reduce the voltage and/or electric current of the output of power transfer module 100；Conversely, working as
Electronic system 30 operates in non-underloading (i.e. heavily loaded), and power supply change-over device 10 departs from pulse interval pattern, control
The control signal that unit 120 processed exports high switching frequency gives power switch Q1, Q2, to improve Power convert
Voltage and/or electric current that module 100 is exported.
Control unit 120 is provided with for judging whether power supply change-over device 10 departs from the default of pulse interval pattern
Wake-up voltage.Control unit 120 eats load size according to the output of power supply change-over device 10 and reacts what is returned
Voltage signal (or actual wake-up voltage) and the comparison of default wake-up voltage are to judge power supply change-over device 10
Whether pulse interval pattern is departed from；Wherein, when the output according to power supply change-over device 10 eats load size institute instead
The voltage signal (i.e. foregoing actual wake-up voltage) that should return is more than or equal to default wake-up voltage, and power supply turns
Change the mold block 100 and depart from pulse interval pattern；Conversely, then power transfer module 100 operates in pulse interval mould
Formula.
Control unit 120 may be, for example, integrated circuit, and with operator scheme control pin as shown in Figure 1
122, operator scheme control pin 122 is for producing to judge whether power supply change-over device 10 departs between pulse
The reference voltage for pattern of having a rest.
Variable resistance 140 is electrically connected to the operator scheme control pin 122 of control unit 120, and in electricity
Actual wake-up voltage when supply changeover device 10 departs from pulse interval pattern in practical operation is different from default
During wake-up voltage, resistance value relatively is adjusted according to actual wake-up voltage and default wake-up voltage, makes default call out
Awake voltage is same as actual wake-up voltage.
More specifically, in the ideal situation, actual wake-up voltage is equal to default wake-up voltage.However, by
It is limited to the component error of power supply change-over device 10, the actual wake-up voltages of Chang Huirang deviate default wake-up voltage.
Under such shape condition, it is possible to use adjust the resistance of variable resistance 140 to adjust default wake-up voltage,
Consequently, it is possible to just can avoid power supply change-over device 10 in advance or delay disengaging pulse descriptions pattern.
When actual wake-up voltage is less than default wake-up voltage, power supply change-over device 10 can delay disengaging pulse
Intermittent mode；In the case, default disengaging can be reduced by adjusting the resistance value of variable resistance 140
Voltage, until default out-off voltage is same as actually detaching voltage.And when actual wake-up voltage is called out higher than default
During awake voltage, power supply change-over device 10 can prematurely pop out pulse interval pattern；In the case, it can pass through
Adjust the resistance value of variable resistance 140 to allow default out-off voltage to improve, be same as default out-off voltage
Actually detach voltage.Thereby, the power supply change-over device of same size just can be allowed to possess identical noise and underloading effect
Rate.
In summary, power supply change-over device of the invention can use wake-up voltage adjusting process described as follows with
So that the actual wake-up voltage of the power supply change-over device of same size is same as default wake-up voltage.
First step, the output current of fixed power source conversion equipment 10 makes the output of power supply change-over device 10
Electric current is same as the operation electric current being fixed on after its disengaging pulse interval pattern.
Second step, sensing power supply change-over device 10 departs from the actual wake-up voltage of pulse interval pattern.
Third step, the comparison according to actual wake-up voltage and the default wake-up voltage of power supply change-over device 10
The default wake-up voltage of adjustment, makes default wake-up voltage be same as actual wake-up voltage.
Foregoing first to third step can be as shown in Figure 1 control unit 120 in power supply change-over device
10 are completed the rear automatic adjustment for carrying out default wake-up voltage；Or, can also be by provided with can power transformation
The external tool of resistance device 140 is manually adjusted.Wherein, when manually adjusting, provided with variable resistance
140 instrument can be electrically connected to the operator scheme control pin 122 in power supply change-over device 10；Then, exist
Foregoing first is sequentially carried out to third step, to reach that power supply change-over device 10 presets the adjustment of wake-up voltage.
Fig. 3 is refer to, it illustrates the circuitry block of the power supply change-over device according to second embodiment of the invention
Figure.Power supply change-over device 10a depicted in Fig. 3 includes power transfer module 100 and control unit 120a.
Power transfer module 100 depicted in Fig. 3 and the power transfer module 100 shown in foregoing first embodiment
Each element function it is all identical with related description, will not be described here.
Control unit 120a depicted in Fig. 3 (can e.g. be hindered by the adjust automatically of internal circuit 124
Anti- adjustment) realize that power supply change-over device 10 in the first embodiment presets the work(of the adjustment of wake-up voltage
Energy；In other words, the control unit 120a shown in Fig. 3 can not need the variable resistance shown in Fig. 2
Under 140 situation, the default adjustment for changing awake voltage of power supply change-over device 10 is realized.
Certainly, the present invention can also have other various embodiments, in the feelings without departing substantially from spirit of the invention and its essence
Under condition, those skilled in the art work as can make various corresponding changes and deformation according to the present invention, but
These corresponding changes and deformation should all belong to the protection domain of appended claims of the invention.
Claims (10)
1. the wake-up voltage adjusting process of a kind of power supply change-over device, it is characterised in that include：
A) output current of the power supply change-over device is fixed；
B) the actual wake-up voltage that the power supply change-over device departs from pulse interval pattern is sensed；And
C) the electric relatively to adjust the default wake-up of wake-up voltage is preset according to the actual wake-up voltage and one
Pressure, so that the default wake-up voltage is same as the actual wake-up voltage.
2. according to the method described in claim 1, it is characterised in that further include：
One variable resistance is provided, the power supply change-over device is electrically connected to, it is characterised in that called out when this is default
When voltage of waking up is different from the actual wake-up voltage, the ratio according to the actual wake-up voltage and the default wake-up voltage
Resistance value relatively to adjust the variable resistance.
3. method according to claim 2, it is characterised in that the variable resistance is according to the reality
A voltage difference produced by the comparison of wake-up voltage and the default wake-up voltage is electric to adjust the default wake-up
Pressure.
4. according to the method described in claim 1, it is characterised in that step a), b), and c) be with
One control unit is reached.
5. according to the method described in claim 1, it is characterised in that in step a), make output electricity
Stream is fixed on the electric current that the power supply change-over device departs from intermittent pulse pattern.
6. a kind of power supply change-over device, it is characterised in that include：
One power transfer module；And
One control unit, is electrically connected to the power transfer module, and the control unit, which is provided with, judges the Power convert
Whether device departs from a default wake-up voltage of pulse interval pattern；
Wherein, should when an actual wake-up voltage of the power supply change-over device is different from the default wake-up voltage
Control unit relatively default wakes up electricity according to the actual wake-up voltage and the default wake-up voltage to adjust this
Pressure, to allow the default wake-up voltage to be same as the actual wake-up voltage.
7. power supply change-over device according to claim 6, it is characterised in that the control unit foundation
The comparison adjust automatically of the actual wake-up voltage and the default wake-up voltage default wake-up voltage.
8. power supply change-over device according to claim 7, it is characterised in that the control unit is more wrapped
Containing an internal circuit wake-up voltage is preset for adjusting this.
9. power supply change-over device according to claim 6, it is characterised in that further including one can power transformation
Device is hindered, the variable resistance is connected to the control model control pin of the control unit, the control module control
Pin processed has the adjustment function of the default wake-up voltage, and the control unit is this according to the actual wake-up voltage
Preset the comparison of wake-up voltage to adjust the resistance value of the variable resistance, to make the default wake-up voltage identical
In the actual wake-up voltage.
10. power supply change-over device according to claim 6, it is characterised in that the power transfer module
For LLC resonant mode power transfer modules.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610255738.1A CN107306091B (en) | 2016-04-22 | 2016-04-22 | Power supply change-over device and its wake-up voltage adjusting process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610255738.1A CN107306091B (en) | 2016-04-22 | 2016-04-22 | Power supply change-over device and its wake-up voltage adjusting process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107306091A true CN107306091A (en) | 2017-10-31 |
| CN107306091B CN107306091B (en) | 2019-10-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610255738.1A Active CN107306091B (en) | 2016-04-22 | 2016-04-22 | Power supply change-over device and its wake-up voltage adjusting process |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8102679B2 (en) * | 2008-08-15 | 2012-01-24 | Infineon Technologies Ag | Utilization of a multifunctional pin to control a switched-mode power converter |
| CN103973138A (en) * | 2013-02-04 | 2014-08-06 | 产晶积体电路股份有限公司 | Dynamic variable-frequency power conversion system |
-
2016
- 2016-04-22 CN CN201610255738.1A patent/CN107306091B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8102679B2 (en) * | 2008-08-15 | 2012-01-24 | Infineon Technologies Ag | Utilization of a multifunctional pin to control a switched-mode power converter |
| CN103973138A (en) * | 2013-02-04 | 2014-08-06 | 产晶积体电路股份有限公司 | Dynamic variable-frequency power conversion system |
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| Publication number | Publication date |
|---|---|
| CN107306091B (en) | 2019-10-18 |
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