CN1302609C - Multiple period alternated switching type electrical power control unit - Google Patents
Multiple period alternated switching type electrical power control unit Download PDFInfo
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- CN1302609C CN1302609C CNB031053084A CN03105308A CN1302609C CN 1302609 C CN1302609 C CN 1302609C CN B031053084 A CNB031053084 A CN B031053084A CN 03105308 A CN03105308 A CN 03105308A CN 1302609 C CN1302609 C CN 1302609C
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Abstract
The present invention relates to a multi-period alternate switching type power control device which comprises an energy transmission control unit, a biasing control unit of energy intensity, a time sequence control unit of burst waves, and a derivative logical control unit, wherein the device has multiple period combinations of changeable control; some energy forwarding elements with specific properties can be effectively controlled; the present invention also ensures that the elements and back loads effectively work within the range of reliable characteristics.
Description
Technical field
The present invention relates to a kind of switch mode power control device of multiple periodicity alternative expression, especially refer to a kind of switch mode power control device that possesses the cycle combination that multiple variable control is arranged, energy transfer element for some special properties can effectively be controlled, and guarantees more effective being operated in the reliable characteristic range of load of this element and rear end.
Background technology
In traditional switch mode power control device, have a kind of be with the quota and have frequency change as main control method, as shown in Figure 6, the charge/discharge of each oscillating circuit is connected with the RT terminal by resistance to be set, the RT terminal is to be connected to the FB terminal by resistance, so that the control frequency of (light-operated) to be provided.CT1 is the terminal that connects the oscillating circuit output of electric capacity, can produce triangular wave oscillation between lower limit LL and high threshold UL by the electric current of RT terminal.CT2 connects the terminal of electric capacity to produce light-operated dentation ripple, allows 1/20 electric current of CR1 terminal flow, and between lower limit LL and high threshold UL technology such as generation tooth ripple vibration.But aforesaid method but may not be a method for some energy transfer element.When especially this energy transfer element has some band general character matter (Bandpass filter), change the frequency of input, can obtain changing the result of output voltage, what but the energy of input was a large amount of really is absorbed by this energy transfer element, long-term use will make this element disintegration or accelerated ageing, thereby influence the reliability of whole system.
In addition, require output to have energy intensity when changing at some, common way is to use the wave generation circuit of bursting, and makes intake do intermittent transmission (shown in Fig. 7-1～7-3), after doing the variation of energy or voltage via the energy transfer element again, sent into load elements.But this method has very big shortcoming, because opening intermittently, disconnected action (ON_OFF), can make this energy transfer element be subjected to the impact of moment (from zero electric energy to maximum power), and can cause this element to produce the noise that can hear.
Summary of the invention
Main purpose of the present invention is to solve the defective of above-mentioned prior art, avoids defective to exist.The present invention utilized in the OFF cycle, the function (standby Mode Function) of a standby mode of operation still is provided thereby has improved the modification scope of previous system greatly, and make that the energy conversion component molar behavior is being kept, therefore the noise that can hear also has been suppressed, and ON and OFF cycle respectively provide different energy to pass on, also make load end can obtain effective excitation, make that system effectiveness energy transfer element and load end device can both be by controls in full force and effect, thereby make product reliable more efficient.
For realizing above-mentioned purpose, the switch mode power control device of multiple periodicity alternative expression of the present invention includes: a power conversion control unit, an energy intensity bias control unit, burst a ripple timing control unit and a derivation logic control element; Wherein, described device possesses the cycle combination that multiple variable control is arranged, and can effectively control for the energy transfer element of some special properties, and guarantee more effective being operated in the reliable characteristic range of load of this element and rear end.
Description of drawings
Relevant detailed content of the present invention and technical descriptioon, existing conjunction with figs. is described as follows:
Fig. 1 is a block diagram of the present invention.
Fig. 2 is the timing waveform schematic diagram of Fig. 1.
Fig. 3 is power conversion control unit and the energy intensity bias control unit circuit diagram of Fig. 1.
Fig. 4 is the ripple timing control unit circuit diagram of bursting of Fig. 1.
Fig. 5 is the derivation logic control element circuit diagram of Fig. 1.
Fig. 6 is traditional light modulation timing waveform schematic diagram.
Fig. 7-1 is the sequential schematic diagram of traditional energy intensity under 100% light source and about per second 120Hz control period of wave of bursting.
Fig. 7-2 does not work in the energy transfer element for Fig. 7-1, schematic diagram during 50% complete halted state.
Fig. 7-3 is that Fig. 7-1 energy transmits 10%, and the energy transfer element is not worked, schematic diagram during 90% complete halted state.
Embodiment
Referring to Fig. 1～5, be the timing waveform of square frame of the present invention and Fig. 1 and the circuit diagram of Fig. 1.As shown in the figure: the switch mode power control device of multiple periodicity alternative expression of the present invention (Multi-period Cycle-Alternative Switching Mode Power SuppleControl Device), possesses the cycle combination that multiple variable control is arranged, energy transfer element for some special properties can effectively be controlled, and guarantee more effective work in the reliable characteristic range of loading on of this element and rear end, this device includes: a power conversion control unit (Power Transfer Control) 1, one energy intensity bias control unit (Dimming Bias Control) 2, one ripple timing control unit (Burst TimingControl) the 3 and one derivation logic control element (Steering Logic) 4 of bursting; Wherein, this power conversion control unit 1 is connected with resistance 11 and an electric capacity 12, the common decision element of setting operating frequency point of forming, the input 13 of power conversion control unit 1 is then imported an error signal, then be with the back coupling error signal, be used for adjusting work week wide (DutyWidth), and obtain adjusting signal A1, A2 at the output 14,15 of power conversion control unit 1, the i.e. control output signal of two groups of different sequential relationships, and be sent to derivation logic control element 4.
These energy intensity bias control unit 2 one input end 21 are connected with another output of above-mentioned power conversion control unit 1, be that clock signal that above-mentioned power conversion control unit 1 is produced is as the reference source, utilize the current potential of energy intensity bias control unit 2 another input 22 inputs one error signals simultaneously, change time relationship with reference to clock signal, thereby obtaining another group control timing B1, B2, this control timing B1, B2 are then exported in the above-mentioned derivation logic control element 4 by the output 23,24 of energy intensity bias control unit 2.
This 3 of ripple timing control unit of bursting is made up of one group of rising triangle wave circuit, simultaneously an energy intensity control input signals (Dimming ADJ) is arranged at input 31, be used for making comparisons with aforementioned rising triangular waveform, and then output 32 obtains the control timing C1 of an ON_OFF (High_Low), and this sequential C1 is used for distributing the sequential of above-mentioned adjustment signal A1, A2 and control timing B1, B2 to output to the ordinal relation of the output 41,42 of derivation logic control element 4.
This derivation logic control element 4, then be at the adjustment signal A1 that is exported from power conversion control unit 1, the control timing B1 that A2 and energy intensity bias control unit 2 are exported, B2, and the sequential C1 that exported of the ripple timing control unit 3 of bursting, with the precedence relationship of these signals according to sequential, by the ON_OFF signal of logical circuit according to the output 32 of the ripple timing control unit 3 of bursting, and sent out in regular turn and in different sequential week period interval, and then the outside soft resonant element (Soft ResonantComponents) of control, do suitable energy waveform conversion, again energy waveform (near sinusoidal wave) is delivered to conversion element (Power Transfer element), the signal after conversion (rises, the step-down signal) delivers to load end element (or fluorescent tube again, rectification circuit etc.).
In the time will changing the output energy, do not change frequency, but change work week wide (DutyWidth), because frequency is still the same, therefore the energy transfer element that has band general character matter, can be operated in best efficiency point, but because of wide change of week, then can obtain a voltage waveform that wave amplitude is less through exporting soft control element (SoftSwitching Components), because changed the voltage of load end, and obtain regulation and control (Regulation Controling) function, increased by one group of strength control unit (Dimming Control Period Unit) in addition, when when carrying out the intensity regulation and control, the ON cycle still keeps, by week wide control unit frequency and the week wide, but the OFF cycle then come the average energy in master control ON cycle and OFF cycle to be added to the adjustment input by the strength control unit, adjust all wide of the another one circulation of OFF during the cycle, this week is wide basic just little many than the ON cycle.But on an average, still can obtain the effect of strength control, and without any the intermittent breaks phenomenon.
Because the present invention is in the OFF cycle, the function (standby Mode Function) of a standby mode of operation still is provided, thereby improved the modification scope of previous system greatly, and make that the energy conversion component molar behavior is being kept, therefore the noise that can hear has also been restrained, and ON and OFF cycle respectively provide different-energy to pass on, also make load end can obtain effective excitation, make system effectiveness energy transfer element and load end device to be made product more reliably efficient by control in full force and effect.
Above-mentioned is preferred embodiment of the present invention only, is not to be used for limiting scope of the invention process.Be that all equalizations of being done according to the present patent application claim change and modification, be all claim of the present invention and contain.
Claims (8)
1. the switch mode power control device of a multiple periodicity alternative expression possesses the cycle combination that multiple variable control is arranged, and the energy transfer element is controlled, and guaranteed the more effective work of load of this element and rear end, it is characterized in that this device includes:
One power conversion control unit (1) has an input (13), this input (13) input one error signal, and feedback this error signal, it is wide to be used for adjusting work week, and obtains adjusting signal at output (14,15);
One energy intensity bias control unit (2), arbitrary input (21) is connected with another output of above-mentioned power conversion control unit (1) on it, the clock signal that above-mentioned power conversion control unit (1) is produced is as the reference source, utilize another input of energy intensity bias control unit (2) (22) to import the current potential of another error signal simultaneously, change the time relationship of described clock signal, and obtain one group of control timing at output (23,24);
The one ripple timing control unit (3) of bursting, has an input (31) on it, this input (31) has an energy intensity control input signals, be used for and waveform signal that the ripple timing control unit (3) of bursting is produced is made comparisons, and then output (32) obtains the control timing of a conducting pick-off signal; And
One derivation logic control element (4), it is the control timing that adjustment signal that above-mentioned power conversion control unit (1) is exported and energy intensity bias control unit (2) are exported, and the sequential exported of the ripple timing control unit (3) of bursting, conducting pick-off signal according to logic circuit output end (32), precedence relationship according to sequential, changed in different sequential week period interval, and then control outer member, externally element is delivered to the load end element after handling again, i.e. controllable load end member spare action.
2. the switch mode power control device of multiple periodicity alternative expression according to claim 1 is characterized in that, this power conversion control unit (1) is connected with resistance (11) and an electric capacity (12), the common decision element of setting operating frequency point of forming.
3. the switch mode power control device of multiple periodicity alternative expression according to claim 1 is characterized in that, this ripple timing control unit (3) of bursting is made up of one group of rising triangle wave circuit.
4. the switch mode power control device of multiple periodicity alternative expression according to claim 1 is characterized in that, this load end element is a fluorescent tube.
5. the switch mode power control device of multiple periodicity alternative expression according to claim 1 is characterized in that, this load end element is a rectification circuit.
6. the switch mode power control device of multiple periodicity alternative expression according to claim 1 is characterized in that this outer member includes soft resonant element and conversion element.
7. the switch mode power control device of multiple periodicity alternative expression according to claim 6, it is characterized in that, this derivation logic control element (4) output signal and then the outside soft resonant element of control, do the energy waveform conversion, again energy waveform is delivered to conversion element, the signal after conversion is delivered to the load end element again.
8. the switch mode power control device of multiple periodicity alternative expression according to claim 1, it is characterized in that, energy transfer element with band general character matter is operated in best efficiency point, because of wide change of week, obtain a voltage waveform that wave amplitude is less through exporting soft control element, and change the voltage of load end, to obtain regulation and control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031053084A CN1302609C (en) | 2003-02-20 | 2003-02-20 | Multiple period alternated switching type electrical power control unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031053084A CN1302609C (en) | 2003-02-20 | 2003-02-20 | Multiple period alternated switching type electrical power control unit |
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| Publication Number | Publication Date |
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| CN1523739A CN1523739A (en) | 2004-08-25 |
| CN1302609C true CN1302609C (en) | 2007-02-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB031053084A Expired - Fee Related CN1302609C (en) | 2003-02-20 | 2003-02-20 | Multiple period alternated switching type electrical power control unit |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100456606C (en) * | 2004-11-29 | 2009-01-28 | 新巨企业股份有限公司 | Multiple changing mode power control method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0746828A (en) * | 1993-07-28 | 1995-02-14 | Sharp Corp | Switching power-supply circuit |
| CN1357964A (en) * | 2000-12-04 | 2002-07-10 | 三垦电气株式会社 | DC-DC converter |
| CN1389970A (en) * | 2001-06-05 | 2003-01-08 | 栢怡国际股份有限公司 | Power-factor correcting method for low ready power |
-
2003
- 2003-02-20 CN CNB031053084A patent/CN1302609C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0746828A (en) * | 1993-07-28 | 1995-02-14 | Sharp Corp | Switching power-supply circuit |
| CN1357964A (en) * | 2000-12-04 | 2002-07-10 | 三垦电气株式会社 | DC-DC converter |
| CN1389970A (en) * | 2001-06-05 | 2003-01-08 | 栢怡国际股份有限公司 | Power-factor correcting method for low ready power |
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| Publication number | Publication date |
|---|---|
| CN1523739A (en) | 2004-08-25 |
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