CN101237183A - High frequency switch type power supply device - Google Patents
High frequency switch type power supply device Download PDFInfo
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- CN101237183A CN101237183A CNA200710034375XA CN200710034375A CN101237183A CN 101237183 A CN101237183 A CN 101237183A CN A200710034375X A CNA200710034375X A CN A200710034375XA CN 200710034375 A CN200710034375 A CN 200710034375A CN 101237183 A CN101237183 A CN 101237183A
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Abstract
The invention discloses a high-frequency switch mode power supply which connects an input power to a high-frequency AC generator to produce and transmit an AC signal to an automatic potential and compensation control circuit, a potential is adjusted according to a designed power or the level of output and a detected output level feedback signal, the adjusted high-frequency AC signal re-enters a high-frequency pulse width generator and a power driving circuit to generate a pulse width wave, and after high-frequency carrier wave and noise of the pulse width wave are eliminated via a lowpass, an output transformer is used to adjust the voltage, the output end of the output transformer is connected with a level detection and isolation circuit to detect an input/output margin signal which is transmitted to the automatic potential and compensation control circuit for control and adjustment. An unstable inputted power or a city power can output a set voltage, current or power according to a designed goal or as needed via the device.
Description
Technical field:
The present invention relates to a kind of output HIGH current or high-tension high frequency switch type power supply device of can be used for, range of application more can expand wide and need the frequency conversion type power supply unit of electric power greatly, UPS (UPS), the for example application such as induction type electromagnetic oven of motor rotary speed control appliance, refrigerating and air conditioning machinery equipment or household appliances product.
Background technology:
Power supply unit is current electronics, one of most important product on the motor industry, such as the various motors that need use and electric power, electronics, household electrical appliances, information, audio-visual products, except minority passive type product or simple applications, almost all need be dependent on various difference in functionalitys, pattern, the power supply unit of watt level or different designs technology, to keep its normal operation, and in current energy supply shortage, under the environmental protection subject under discussion blocking the way situation, the product or the application of many in the past use plain type power supply units also have the trend that transfers use (high-performance) power supply unit gradually to.
General cognition to " power supply unit ", for electric supply that supply of electric power source (Utilities Electric Co., power plant) sent here via the feeding power line or produce equipment (for example battery or self-driving type engine generator) by other kind electric power and be converted to the particular demands that conforms with power consumption equipment, for example product or the equipment of purpose such as voltage height, high stream size, frequency height, different wave mode or specific power deliverability or target.Wherein main application or product be voltage stabilizer or the current tap to supply specific voltage or particular current still then, therefore, though " power supply unit " has various type, application or purpose of design, also mostly are referred to broadly as " pressurizer ".
Moreover, present " power supply unit " is according to the principle difference of its work or design, be broadly divided into two classes: " linear power supply supply (Linear Regulator) " reaches " switch type power supplying device (Switching Power Supply) also claims " switched power supplier " ".Wherein the linear power supply supply is will be higher than to set or the unnecessary power consumption of target converts heat to reaching the purpose of voltage stabilizing and current stabilization, but has caused the waste of electric power.And the switch type power supplying device is as the diverter switch controller with same form circuit, DC power supply is done " the wide degree modulation of ripple (PulseWidth Modulation-PWM) ", and energy is stored in energy storage earlier in addition in the part, again with energy storage in addition the part energy stored be converted to suitable voltage or current value; Energy storage part in addition comprises electromagnetism part (Magnetic Device) or capacitor (Capacitor) in addition.
" pulse bandwidth modulation generator " is to import the height of electric energy according to switching frequency (switching frequency or exchange frequency), cut becomes the impulse wave power of the segment pattern of " when waiting but not wide " or when not waiting " wide but ", impulse wave power with these segments temporarily stores via energy accumulating device, other part again, is organized into the output voltage power that share via conversion output transformer and wave mode finishing circuit again.The Voltage Stability Control principle on the whole for the wave mode width that utilizes " pulse bandwidth modulation generator " control output (when waiting but not wide use it) or the time distance-time cycle when not waiting (wide but use it), so that the value of final output voltage or electric current, just do not change or load change influences, promptly keep constant or stable state because of input voltage.Moreover, according to the formula of Transformer Winding induced electromotive force, please refer to the transformer schematic diagram of Fig. 5:
E
1=4K
φF N
1B
mA
e* 10
-4(formula one)
E
2=4K
φF N
2B
mA
e* 10
-4(formula two)
In the formula
E
1---elementary induced electromotive force
E
2---the secondary induction electromotive force
K
φ---the voltage waveforms factor
F---operating frequency
N
1---the elementary winding number of turns
N
2---the secondary winding number of turns
B
m---magnetic flux density (magnetic field intensity change value T)
A
e---the iron core net sectional area
Can get by (formula one), (formula two): E
1/ E
2=N
1/ N
2(formula three)
Again because electrical power P=E * I (formula four);
Transformer is being disregarded under the internal losses, and input should equate with power output in theory, promptly
P
1=P
2, so winding power: E
1* I
1=E
2* I
2(formula six)
So: E
1/ E
2=I
2/ I
1(formula seven)
By the above-mentioned derivation of equation as can be known " magnetic field intensity Bm strong more (high more) " reach " operating frequency f is high more ", all can improve work, conveying or the load power of transformer.Therefore design has high magnetic field intensity and high operating frequency, can improve output power of power supply relatively; We can say also that perhaps design is used stronger magnetic field or improved the switching frequency of pulse bandwidth modulation generator, just can improve the operating power of transformer or power supply unit.
General par or high-power type transformer mostly use the electromagnetic core of silicon steel sheet as transformer, main cause has the inexpensive advantage with respect to other kind permeability magnetic material except silicon steel sheet, another important reasons is that silicon steel sheet can be operated in higher magnetic field intensity, therefore can provide bigger power output.But when silicon sheet core used at high frequency, its transducing loss was big, and the exchange frequency scope that can use is lower, approximately only can work in the following frequency range of 10KHz, therefore can not use in having the Switching Power Supply supply of upper frequency and high order harmonic component.Again, general Switching Power Supply supply is because need be operated in high-frequency or high order harmonic component condition, therefore mostly use and to work in high-frequency, but the iron powder core pattern permeability magnetic material that must work under lower magnetic field intensity is as transformer core, even so, still can need the magicore material selecting to use unlike material and very big price differential is arranged because of employed switching frequency height, and as when need improving operating frequency, permeability magnetic material also must be to reduce permeability or work magnetic field intensity as negative recompense usually.For the power supply unit that needs high-output power or big electric current, how improving the operating frequency of transformer or using in bigger magnetic field intensity then is a great problem.
Summary of the invention:
Technical problem solved by the invention is: at above-mentioned the deficiencies in the prior art, provide the relatively broader high frequency switch type power supply device of the dynamic range adjusted of a kind of height easy to control, stable, voltage or electric current.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is: a kind of high frequency switch type power supply device, it comprises a high-frequency impulse width modulated generator and power driving circuit, a main low pass filter, an output transformer and an output rectifier, accurate a detection and buffer circuit, the power of input is through behind the said apparatus, be the size of the exportable voltage that sets, electric current or power, be characterized in: the circuit of this switch type power supplying device further is provided with a high-frequency ac generator, from electrokinetic potential and compensation control circuit; Input DC power is connected on this high-frequency ac generator, to produce a high-frequency ac signal, and make it be connected to this from electrokinetic potential and compensation control circuit, needs according to output carry out the adjustment of signal current potential, high-frequency ac signal through adjustment enters high-frequency impulse width modulated generator and power driving circuit again, produce the pulse width modulation ripple, and via behind the main low pass filter elimination high-frequency noise, by the electric current and voltage of output transformer and output rectifier adjustment output; Again, connect upward accurate detection of rheme and buffer circuit in output, behind the outputting level that detects, height or intensity level with predefined output voltage, electric current compares again, to obtain the output error signal, feedback again to be passed to and control adjustment, so that output is kept is stable from electrokinetic potential and compensation control circuit.
The another kind of technical scheme that the present invention adopts is: a kind of high frequency switch type power supply device, it comprises a high-frequency impulse width modulated generator and a power driving circuit, one main low pass filter, one output transformer and an output rectifier, the power supply of input is through behind the said apparatus, be the exportable voltage that sets, the size of electric current or power, be characterized in: the circuit of this switch type power supplying device further is provided with a high-frequency ac generator, and wherein this high-frequency ac generator utilization is located at the program in a digital units or the logical circuit or is encoded and produces the high-frequency ac signal of corresponding setting; Input DC power is connected on the high-frequency ac generator of this numeral or the planning of this logical block, to produce a high-frequency ac signal, this high-frequency ac signal is attached to from electrokinetic potential and compensation control circuit, enter high-frequency impulse width modulated generator and drive circuit again, produce the pulse width modulation ripple, and via behind the main low pass filter elimination high-frequency noise, by the electric current and voltage of output transformer and output rectifier adjustment output; Again, connect accurate a detection and buffer circuit in output, behind the outputting level that detects, height or intensity level with predefined output voltage, electric current compares again, to obtain the output error signal, feedback again to be passed to and control adjustment, so that output is kept is stable from electrokinetic potential and compensation control circuit.
Another technical scheme that the present invention adopts is: a kind of high frequency switch type power supply device, it comprises a high-frequency impulse power driving circuit, a low pass filter, an output transformer and an output rectifier, the power supply of input is through behind the said apparatus, it is the size of the exportable voltage that sets, electric current or power, be characterized in: the circuit of this switch type power supplying device further is provided with a high-frequency ac generator, and wherein this high-frequency ac generator utilization is located at the program in a digital units or the logical circuit or is encoded and produces the high-frequency ac signal of corresponding setting; Input DC power is connected to this numeral or is somebody's turn to do the high-frequency impulse width modulated pulse generator of being made up of logical block, to produce a high-frequency impulse width modulated pulse wave signal, this high-frequency impulse width modulated pulse wave AC signal is attached to the high-frequency impulse power driving circuit, and via behind the main low pass filter elimination high-frequency noise, by the electric current and voltage of output transformer and output rectifier adjustment output.
Above-mentioned " high-frequency ac generator " is the same form in order to produce the circuit of an a-c cycle higher than civil power, general mains frequency is 50 or 60 He Zhi, the frequency range that the design's high-frequency ac generator is produced can be from several one hundred He Zhi (Hz) to several ten kilo hertzs of sesames (KHz), the intensity of this AC signal or size ratio, after suitable control adjustment as the input signal source, and do high-frequency wave mode cut-be high frequency modulated according to the intensity of signal and phase place, produce the pulse duration ripple (Pulse Wave) according to input signal intensity and phase place according to this, this output is pulse modulated wave (Pulse Width Modulated Wave-PWM).Drive (pushing away) moving back level switching amplifier by pulse modulated wave again, its output is again via high frequency filter, to eliminate the used cut high frequency carrier of pulse wave modulation, and then output to power conversion transformer, output potential is done suitable voltage strength conversion according to the setting of rear end or the requirement of load, via the output finishing circuit, functional circuit such as dc rectifier, low pass filter and flow restricter for example are to provide the electric power that meets final output demand pattern again in the output of power conversion transformer.Moreover, by voltage or the current's intensity that outputting level detects and buffer circuit will be detected by output, via isolation and filtering, feedback circuit such as stable, feedback to " from electrokinetic potential and compensation control circuit " in order to the sizes values that will detect, with control and stable by " high-frequency ac generator " output or input to the power output intensity of the signal strength and the analog line driver of high frequency PWM system generator, to guarantee the constant and quality of output voltage electric current or power.
In addition in principle and practicality, power conversion transformer is because have the inductance value of height, therefore also have the character and the function of low pass filter, can further eliminate or reduce the carrier signal intensity that the high frequency clipper is produced, therefore by the high frequency width modulated pulse wave of pulse wave modulation and output that drive circuit produces, through the main low pass filter of previous stage and by the filtration of two-stages such as the formed back of transformer level low-frequency filter remove the high frequency cut with carrier wave after, high frequency in the pulse wave or noise component greatly reduce, thereby can effectively reduce electromagnetic interference (EMI) emissions intensity, clean degree of the clutter of raising out-put supply or noise and reduction are to the infringement of the quality of civil power electric power.
High-frequency ac generator in the present invention's design, and level is analog linearity and back coupling formula amplifying circuit from electrokinetic potential and compensation control circuit thereafter, therefore can be designed to have big dynamic amplification or job change scope, for example 1: 10 or bigger magnification ratio, so can make by " from electrokinetic potential and compensation control circuit " export or enter back level " pulse modulator and drive circuit " but signal strength have similar mobility scale, example 1: 10 magnification ratio as previously described can get 1VDC～10VDC output voltage fluctuation scope, the performance that this output change or the also general absolutely not switch switched power supplier of dynamic range can reach.
Simplicity of design of the present invention, be to add one " AC signal generator " to produce " high-frequency AC signal ", elder generation is amplified and is regulated and control to suitable size, re-use and general Switching Power Supply similar circuit configuration, produce " pulse width modulation ripple " with " high-frequency AC signal " cut that prime is imported and also amplified and arrangement or rectification output.We also can simply note, the technology that general switch type power supplying device circuit or product are commonly used for-do simple high-frequency carrier wave pulse bandwidth with " DC potential ", modulation is switched, with control and output stabilized power supply.The present invention then adds " AC signal generator " again and produces regulatable " high-frequency AC signal " designing technique as high frequency switch type power supply device, because this has the adding of the AC signal of upper frequency, though will make the circuit structure more complicated that becomes, but also therefore used sine wave directly to promote the output power conversion transformer to replace the non-steady state pulse wave, more thereby can obtain plurality of advantages, comprising:
1, can reduce because the direct driving transformer of impulse wave the height sense value inductance because of transformer that must the overcome high inductive impedance effect and the power energy loss that are produced.
2, can use than the silicon steel material of low price and make transformer, and be operated in higher magnetic field intensity, therefore have higher transformer efficiency, maybe can use the transformer iron-core piece group of smaller size smaller.
3, same frequency ripple driving power is when entering output transformer, high frequency composition in the impulse wave or carrier wave are in advance by the low-frequency filter institute filtering of main low pass filter and transformer self formation, only have by the high-frequency ac generator and produced and modulated " high_frequency sine wave " is able to be converted to back and output via output transformer, therefore above pulse high frequency or the high order rank ripple of secondary all greatly reduces, makes this design function also thereby have another advantage such as reduction electromagnetic interference (EMI) emissions intensity.
By aforementioned each section explanation, get and to know that the technology of the present invention has easy control, stability is high, low output ripple, low Electromagnetic Interference radiation (EMI), the dynamic range adjusted of voltage or electric current is the plurality of advantages of broadness etc. relatively, moreover, can use the silicon steel sheet of low price, has greater efficiency with making, smaller size smaller, significant components-the output transformer of the switch type power supplying device of lower cost, and because be sinusoidal wave power with higher-frequency, inject (input) electric energy conversion output transformer, but not as " pulse width modulation type Switching Power Supply supply " be to inject electric energy conversion output transformer with impulse wave, thereby make to have aforesaid every advantage and environmental protection with the designed power supply unit of the present invention, economic benefit.
Below, feature of the present invention will be described in detail according to the embodiment shown in the drawing and use effect.
Description of drawings:
Fig. 1 is implementing procedure figure of the present invention;
Fig. 2 is another implementing procedure figure of the present invention;
Fig. 3 is another implementing procedure figure of the present invention;
Fig. 4 is an implementing procedure figure more of the present invention;
Fig. 5 is a transformer schematic diagram.
Label declaration:
10 ... high-frequency ac generator 20 ... from electrokinetic potential and compensation control circuit
30 ... high-frequency impulse width modulated generator and power driving circuit
31 ... high-frequency impulse power driving circuit 40 ... main low pass filter
50 ... the position is accurate to be detected and buffer circuit 60 ... output transformer
70 ... output rectifier
80 ... but microprocessor or programmed digital logic circuit (generation high frequency ac signal)
80 ' ... but microprocessor or programmed digital logic circuit (producing high-frequency impulse modulation pulse wave)
81 ... analog-digital converter 90 ... the impulse wave delay control circuit
Embodiment:
See also shown in Figure 1, the present invention is a kind of high frequency switch type power supply device, it comprises a high-frequency ac generator 10, one from electrokinetic potential and compensation control circuit 20, one high-frequency impulse width modulated generator and power driving circuit 30, one main low pass filter 40, an accurate detection and buffer circuit 50, one output transformer 60 and an output rectifier 70, wherein after the power input, earlier after high-frequency ac generator 10 produces the high-frequency ac signal, in regular turn via from electrokinetic potential and compensation control circuit 20, high-frequency impulse width modulated generator and power driving circuit 30, main low pass filter 40, output transformer 60 and output rectifier 70, and in the rear end of output rectifier 70 connection feedback circuit, through the position accurate detect and buffer circuit 50 to from electrokinetic potential and compensation control circuit 20, to adjust the input signal size that the high-frequency ac generator exports pulse bandwidth modulation generator to, export voltage or the electric current that sets to reach, and keep the stable of output according to this.
Wherein, produce a high-frequency ac signal in high-frequency ac generator 10, be connected to this from electrokinetic potential and compensation control circuit 20, carry out the adjustment of input signal current potential according to the signal of output signal and back coupling, enter high-frequency impulse width modulated generator and drive circuit 30 again, produce the pulse width modulation ripple and amplify power output, and via behind the main low pass filter 40 elimination noises, adjust the signal of output by output transformer 60 and output rectifier 70, moreover, connect a feedback circuit to from electrokinetic potential and compensation control circuit 20 in output (rear end of output rectifier), can precisely control the signal size of output by the adjustment of input.The signal Detection Point that output intensity is feedback can be by output or detect before, or by the winding of output transformer or add one and independently detect winding and detect use.
Again, high-frequency ac generator 10 of the present invention can utilize the wave mode generator of design in advance, as utilizing sine-wave producer or square baud generator or triangular wave generator, produces the signal ripple of various high frequencies, to supply different application demands.
See also shown in Figure 2, high-frequency ac generator 10 is except using the linear amplifier circuit mode to produce the corresponding high-frequency ac signal, can also utilize numeral or logical circuit mode, by microprocessor, microcomputer or elasticity programmable formula logic array (FPGA) but etc. little processing or programmed digital logic circuit 80, program or coding with prior design produce corresponding high-frequency ac wave mode, or according to required output wave mode and intensity, directly calculate due high-frequency ac wave mode intensity, again according to aforementioned functional path and control flow, the needed voltage of also exportable design object, electric current or power.
See also shown in Figure 3, but when being applied in the technology of the present invention or product with little processing or programmed digital logic circuit 80 as described above, can also plan or be designed to directly to produce corresponding " the high-frequency ac output of impulse waveization " or " high-frequency ac pattern high-frequency impulse width modulated wave mode ", but little processing as shown in Figure 3 or programmed digital logic circuit 80 ', and external or built-in analog digital conversion 81 (Analog to Digital Converter-ADC) but a little processing so far or programmed digital logic circuit 80 ', detect output voltage or current strength by analog-digital converter 81, but after this little processing or programmed digital logic circuit 80 ' comparison design object or predetermined output valve, calculate the output error value, but again by this little processing or programmed digital logic circuit 80 ' error amount is reacted directly on the output signal or pulse duration of " high-frequency ac pattern high-frequency impulse width modulated wave mode ", thereby can not need to use " from electrokinetic potential and compensation control circuit ", and directly this adjusted high-frequency ac pattern high-frequency impulse width modulated ripple output is directly inputted into high-frequency impulse power driving circuit 31 and subsequent output.
The stable control method of another output of the present invention again " high frequency switch type power supply device " is to utilize the method for " time delay control ", with the width of change output impulse wave, and then reaches the stable purpose of output.Please refer to Fig. 4, we can be with aforementioned digital units or the output of impulse wave high-frequency ac that logical block produced, be connected to an impulse wave delay control circuit 90, this impulse wave delay control circuit then also is connected to simultaneously the output difference feedback signal by the position standard detects and buffer circuit detected, and by the width of this difference signal strength control impulse wave output of feedbacking, when for example output power intensity is higher than (greatly too) desired value, delay circuit will be delayed the time that impulse wave rises, but do not change termination (decline) time of impulse wave, to reduce the width of this output pulse wave, tool is to reduce the power of output, if or output power intensity be lower than (less than) during desired value, the time of delaying when delay circuit will reduce the impulse wave rising, but equally also do not change termination (decline) time of impulse wave, with the width of increase impulse wave and the power of output, so also can reach voltage, the purpose that electric current or power output are stable; The principle of this design, briefly be exactly the analog high-frequency ac generator output that replaces earlier figures 1 with digitized pulse bandwidth ripple, and replace with " from electrokinetic potential and compensation control circuit " among Fig. 1 with " impulse wave delay control circuit ", like this then utilize digitized control principle and can reach the stable purpose of output power equally.
Wherein the circuit structure design of this high-frequency ac generator, this high-frequency impulse width modulated generator, this analog-digital converter, should be from electrokinetic potential and compensation control circuit, this accurate detection and buffer circuit or the like circuit, can be all or partly be combined into an integrated circuit (Hybrid Circuit) or an integrated circuit (Integrated Circuit), manufacture use for complete product.
Claims (10)
1. high frequency switch type power supply device, it comprises a high-frequency impulse width modulated generator and power driving circuit, a main low pass filter, an output transformer and an output rectifier, accurate a detection and buffer circuit, the power of input is through behind the said apparatus, be the size of the exportable voltage that sets, electric current or power, it is characterized in that:
The circuit of this switch type power supplying device further is provided with a high-frequency ac generator, from electrokinetic potential and compensation control circuit; Input DC power is connected on this high-frequency ac generator, to produce a high-frequency ac signal, and make it be connected to this from electrokinetic potential and compensation control circuit, needs according to output carry out the adjustment of signal current potential, high-frequency ac signal through adjustment enters high-frequency impulse width modulated generator and power driving circuit again, produce the pulse width modulation ripple, and via behind the main low pass filter elimination high-frequency noise, by the electric current and voltage of output transformer and output rectifier adjustment output; Again, connect upward accurate detection of rheme and buffer circuit in output, behind the outputting level that detects, height or intensity level with predefined output voltage, electric current compares again, to obtain the output error signal, feedback again to be passed to and control adjustment, so that output is kept is stable from electrokinetic potential and compensation control circuit.
2. high frequency switch type power supply device according to claim 1 is characterized in that: described high-frequency ac generator is sine-wave producer, square baud generator or triangular wave generator.
3. high frequency switch type power supply device according to claim 1 is characterized in that: described high-frequency ac generator utilizes linear amplifier circuit to produce corresponding high-frequency ac signal.
4. high frequency switch type power supply device according to claim 1, it is characterized in that: described high-frequency ac generator, should be from electrokinetic potential and compensation control circuit, this high-frequency impulse width modulated generator, this accurate detection and circuit structure or design of buffer circuit, can be all or partly be combined into an integrated circuit or an integrated circuit.
5. high frequency switch type power supply device, it comprises a high-frequency impulse width modulated generator and power driving circuit, a main low pass filter, an output transformer and an output rectifier, the power supply of input is through behind the said apparatus, be the size of the exportable voltage that sets, electric current or power, it is characterized in that:
The circuit of this switch type power supplying device further is provided with a high-frequency ac generator, and wherein this high-frequency ac generator utilization is located at the program in a digital units or the logical circuit or is encoded and produces the high-frequency ac signal of corresponding setting; Input DC power is connected on the high-frequency ac generator of this numeral or the planning of this logical block, to produce a high-frequency ac signal, this high-frequency ac signal is attached to from electrokinetic potential and compensation control circuit, enter high-frequency impulse width modulated generator and drive circuit again, produce the pulse width modulation ripple, and via behind the main low pass filter elimination high-frequency noise, by the electric current and voltage of output transformer and output rectifier adjustment output; Again, connect accurate a detection and buffer circuit in output, behind the outputting level that detects, height or intensity level with predefined output voltage, electric current compares again, to obtain the output error signal, feedback again to be passed to and control adjustment, so that output is kept is stable from electrokinetic potential and compensation control circuit.
6. high frequency switch type power supply device, it comprises a high-frequency impulse power driving circuit, a low pass filter, an output transformer and an output rectifier, the power supply of input is through behind the said apparatus, and the size of the promptly exportable voltage that sets, electric current or power is characterized in that:
The circuit of this switch type power supplying device further is provided with a high-frequency ac generator, and wherein this high-frequency ac generator utilization is located at the program in a digital units or the logical circuit or is encoded and produces the high-frequency ac signal of corresponding setting; Input DC power is connected to this numeral or is somebody's turn to do the high-frequency impulse width modulated pulse generator of being made up of logical block, to produce a high-frequency impulse width modulated pulse wave signal, this high-frequency impulse width modulated pulse wave AC signal is attached to the high-frequency impulse power driving circuit, and via behind the main low pass filter elimination high-frequency noise, by the electric current and voltage of output transformer and output rectifier adjustment output.
7. high frequency switch type power supply device according to claim 6, it is characterized in that: described digital units or this logical block further connect an analog-digital converter and accurate a detection and buffer circuit, and this accurate detection and buffer circuit connect the back coupling signal of output, to measure output voltage or the current strength that detects in output, signal is changed and is passed to above-mentioned digital units or logical block through analog-digital converter, compare with the predetermined value of setting or calculate error amount, again by this digital units or logic control circuit, error amount is reacted directly on the wide or intensity of the ripple of high-frequency impulse width modulated ripple of high-frequency ac pattern of output, makes final output reach default value.
8. high frequency switch type power supply device according to claim 6, it is characterized in that: the described output that will produce the high-frequency ac generator of fixed by digital units or this logical block, can be connected to an impulse wave delay control circuit, this impulse wave delay control circuit then is connected to the aforementioned output intensity difference feedback signal that is detected by accurate detection in position and isolation simultaneously, and be subjected to this difference signal strength control, make the impulse wave that becomes relative stability by the wide target power of the pulse wave-wave of this impulse wave delay control circuit output, to reach voltage with output, the purpose that electric current or power output are stable.
9. according to each described high frequency switch type power supply device among the claim 5-7, it is characterized in that: the circuit structure design of described high-frequency ac generator, this high-frequency impulse power driving circuit, this analog-digital converter, this accurate detect and isolates, can be all or partly be combined into an integrated circuit or an integrated circuit.
According to Claim 8 in each described high frequency switch type power supply device, it is characterized in that: the circuit structure design of described high-frequency ac generator, this high-frequency impulse power driving circuit, this analog-digital converter, this impulse wave delay control circuit, this accurately detects and isolates, can be all or partly be combined into an integrated circuit or an integrated circuit.
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| CNA200710034375XA CN101237183A (en) | 2007-02-02 | 2007-02-02 | High frequency switch type power supply device |
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|---|---|---|---|
| CNA200710034375XA CN101237183A (en) | 2007-02-02 | 2007-02-02 | High frequency switch type power supply device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101860243B (en) * | 2010-05-14 | 2012-12-19 | 西安英洛华微电子有限公司 | Line loss compensation circuit for switch power supply |
| CN103026582A (en) * | 2010-05-27 | 2013-04-03 | 杰兴电子科技（深圳）有限公司 | Two-input uninterruptible voltage converting device and method thereof |
| CN103368363A (en) * | 2013-06-08 | 2013-10-23 | 南京劳伦斯电子科技有限公司 | Novel IGBT (Insulated Gate Bipolar Translator) driving circuit for high-frequency high-voltage switching power supply |
| CN105091048A (en) * | 2014-05-06 | 2015-11-25 | 张玉清 | Induction cooker with continuous and adjustable power |
| CN105915037A (en) * | 2015-02-20 | 2016-08-31 | 凌力尔特公司 | Control architecture with improved transient response |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101860243B (en) * | 2010-05-14 | 2012-12-19 | 西安英洛华微电子有限公司 | Line loss compensation circuit for switch power supply |
| CN103026582A (en) * | 2010-05-27 | 2013-04-03 | 杰兴电子科技（深圳）有限公司 | Two-input uninterruptible voltage converting device and method thereof |
| CN103368363A (en) * | 2013-06-08 | 2013-10-23 | 南京劳伦斯电子科技有限公司 | Novel IGBT (Insulated Gate Bipolar Translator) driving circuit for high-frequency high-voltage switching power supply |
| CN105091048A (en) * | 2014-05-06 | 2015-11-25 | 张玉清 | Induction cooker with continuous and adjustable power |
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