CN103904894A - Novel wide-range power supply designing method - Google Patents
Novel wide-range power supply designing method Download PDFInfo
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- CN103904894A CN103904894A CN201410106106.XA CN201410106106A CN103904894A CN 103904894 A CN103904894 A CN 103904894A CN 201410106106 A CN201410106106 A CN 201410106106A CN 103904894 A CN103904894 A CN 103904894A
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Abstract
The invention discloses a novel wide-range power supply designing method. According to the designing method, five modules, namely a rectifier module, a relay module, a hysteresis comparator module, a boost module and a flyback module are included. Input voltage reaches a load through the rectifier module, a relay 1, the boost module, a relay 2 and the flyback module. The hysteresis comparator module and the rectifier module are connected in parallel and control the relay 1 and the relay 2 to work. When the input voltage is high, the input voltage directly passes through a rectifier bridge to be used as input voltage of a flyback circuit, the two relays work under a normally-closed state, and a middle boost circuit does not work. When the input voltage is low, by judging of a hysteresis comparator, the two relays are controlled to be sucked, two switches are both turned to the normal-on state, the input voltage becomes V1 after rectification, the voltage is boosted to V2 through the boost circuit, and then the voltage is used as input voltage of the flyback circuit. The alternating-current input voltage range of a power supply can reach 25 V-265 V, and meanwhile a power supply with the direct-current output range of 150 V-400 V is borne.
Description
Technical field
The present invention relates to the method for designing of novel wide-range power, be specifically related to the power supply of a kind of 150V-400V direct voltage input, compatible with alternating input voltage range can reach the Switching Power Supply method for designing of 25V-265V again simultaneously.
Technical background
Along with the extensive application of Switching Power Supply, it is required also in continuous raising, require that its efficiency is high, power factor (PF) is high, power density is high, reliability is high.
In the time requiring Switching Power Supply can adapt to exchange 110V and two kinds of voltage standards of 220V, Switching Power Supply is generally designed to 90 ~ 265V input.But in the situation that a few thing condition is more severe, when AC-input voltage is lower than 90V or higher than 265V sometimes, still require Switching Power Supply normally to work.
In addition the increase requiring along with the development of server and to power source performance, and the use of high voltage direct current power supply technique, meet at present the galvanic power supply of telecommunications 240V and design, but meet the up-to-date mobile galvanic power supply of 336V of releasing, but also in exploitation.In analyzing power supply use, we find, if can make a power supply and can meet the direct current input of 240V and 336V simultaneously, the universal of power supply will be stronger like that, so release a power supply that bears 150V-400V direct voltage input of design, compatible with alternating input voltage range can reach the power supply of 25V-265V again simultaneously.
Summary of the invention
The technical problem to be solved in the present invention is: the input voltage range that is different from 240V and 336V DC power supply, the born input voltage range that expands power supply realizes highly compatible, make again AC-input voltage scope can reach 25V-265V wide region, meet the demand of world market simultaneously.
The technical solution adopted in the present invention is:
A kind of method for designing of novel wide-range power, affiliated method for designing comprises five modules: rectification module, relay module, hysteresis comparator module, boost module, flyback module, wherein input voltage is through rectification module, relay 1, boost module, relay 2, flyback module arrives load, hysteresis comparator module also control relay 1 in parallel with rectification module and relay 2 are worked, when input voltage is when high, input voltage directly passes through the input voltage of rectifier bridge as circuit of reversed excitation, two relays are all operated in normally off, middle booster circuit is not worked.If when input voltage is lower, by the judgement of hysteresis comparator, control two relay adhesives, two switches are all got to normally open, input voltage becomes V1 after over commutation, then improves voltage through booster circuit and obtain V2, then as the input voltage of circuit of reversed excitation.Adopt hysteresis comparator in the time judging input voltage height, have a sluggish scope, make circuit steady operation more.
Two relays, in normally closed and still often open, have the mode of operation of 4 kinds of combinations in whole circuit:
DC-DC after pattern 1 Chang Kaichangkai first boosts
The normally closed direct DC-DC that do not boost of pattern 2
The normally closed invalid mode of often opening of mode 3
Pattern 4 normally-open normally-close invalid mode
The operation principle of described flyback module is as follows:
In the time of switching tube conducting, transformer primary side inductive current starts to rise, and now, due to the relation of secondary Same Name of Ends, output diode ends, transformer storage power, and load provides energy by output capacitance.In the time that switching tube ends, transformer primary side inductance induced voltage is reverse, now output diode conducting, and the energy in transformer powers to the load via output diode, simultaneously to capacitor charging, supplements the energy just having lost.
For the input direct voltage method for designing of wide region, adopt the method for designing of highly compatible DC power supply to improve compatibility, implementation method is as follows:
In flyback module, specifically adopt highly compatible voltage controlled oscillator Current Control, in oscillating circuit, adopt voltage-controlled element as frequency control device.If as controlling voltage, voltage controlled oscillator can be made into frequency adjustment signal source very easily with direct voltage.
The design of classical inverse excitation type switch power-supply is as follows:
This design by control electric current I C method, can be only voltage control below 264V, due to the difference of input voltage, make the linear change rate difference of transformer inductance electric current, therefore the ON time of power switch pipe is also completely different; In the time of high input voltage, the ON time of power MOSFET pipe is very short, is only 300-600nS, and the instantaneous peak current that power MOSFET pipe flows through is very large; In the time that closing, power MOSFET pipe may there is saturation condition.Result can not be opened linearly power transfer in the time of conducting, causes the decrease in efficiency of converter and reliability to reduce.
Described highly compatible voltage controlled oscillator Current Control, in the design of classical inverse excitation type switch power-supply, remove the control of reference voltage to timing resistor, introduce a variable voltage to timing resistor and error amplifier, after electric pressure converter is arranged on error amplifier and between voltage controlled oscillator (VCO), be placed on error amplifier and accepted afterwards the variation of whole output voltage with a simple voltage-stabiliser tube, when input voltage minimum, and power output full load, the input voltage that the duty ratio of switching tube will exceed 50%, VCO will reach required evaluation.
On the basis of the method, the corresponding relevant parameter of regulating resistance, electric capacity and inductance again, realizes wide input voltage standard.
Beneficial effect of the present invention is:
Adopt the AC-input voltage scope of the power supply of the inventive method can reach 25V-265V; Bear the power supply of 150V-400V direct voltage input range simultaneously, work and keep normal, can reach that efficiency is high, power factor (PF) is high, power density is high, the high requirement of reliability, along with the continuous popularization of the power supply technique of this novel wide region, and wilderness demand to energy-saving equipment, will have wide practical use at server market.
Accompanying drawing explanation
Fig. 1 is electrical block diagram of the present invention;
Fig. 2 is flyback topology basic circuit schematic diagram of the present invention;
Fig. 3 is the design of classical inverse excitation type switch power-supply
Fig. 4 is highly compatible voltage controlled oscillator Current Control schematic diagram.
Embodiment
With reference to the accompanying drawings, by embodiment, the present invention is further described:
A kind of method for designing of novel wide-range power, affiliated method for designing comprises five modules: rectification module, relay module, hysteresis comparator module, boost module, flyback module, wherein input voltage arrives load through rectification module, relay 1, boost module, relay 2, flyback module, hysteresis comparator module also control relay 1 in parallel with rectification module and relay 2 are worked, when input voltage is when high, input voltage directly passes through the input voltage of rectifier bridge as circuit of reversed excitation, as shown in Figure 1.In figure, two relays are all operated in normally off, and middle booster circuit is not worked.If when input voltage is lower, by the judgement of hysteresis comparator in figure, control two relay adhesives, two switches are all got to normally open, therefore, when input voltage Vac becomes V1 after over commutation, then improve voltage through booster circuit and obtain V2, then as the input voltage of circuit of reversed excitation.Adopt hysteresis comparator in the time judging input voltage height, have a sluggish scope, make circuit steady operation more.
Two relays, in normally closed and still often open, have the mode of operation of 4 kinds of combinations in whole circuit:
DC-DC after pattern 1 Chang Kaichangkai first boosts
The normally closed direct DC-DC that do not boost of pattern 2
The normally closed invalid mode of often opening of mode 3
Pattern 4 normally-open normally-close invalid mode
As shown in Figure 2, the operation principle of flyback module is as follows:
In the time of switching tube conducting, transformer primary side inductive current starts to rise, and now, due to the relation of secondary Same Name of Ends, output diode ends, transformer storage power, and load provides energy by output capacitance.In the time that switching tube ends, transformer primary side inductance induced voltage is reverse, now output diode conducting, and the energy in transformer powers to the load via output diode, simultaneously to capacitor charging, supplements the energy just having lost.
Input direct voltage method for designing for wide region:
The method for designing of this highly compatible DC power supply improves compatible method and realizes, and is mainly to realize in flyback module, specifically adopts highly compatible voltage controlled oscillator Current Control: core is in oscillating circuit, to adopt voltage-controlled element as frequency control device.If as controlling voltage, voltage controlled oscillator can be made into frequency adjustment signal source very easily with direct voltage.
As shown in Figure 3, the design of classical inverse excitation type switch power-supply is as follows:
This design by control electric current I C method, can be only voltage control below 264V, due to the difference of input voltage, make the linear change rate difference of transformer inductance electric current, therefore the ON time of power switch pipe is also completely different; In the time of high input voltage, the ON time of power MOSFET pipe is very short, is only 300-600nS, and the instantaneous peak current that power MOSFET pipe flows through is very large; In the time that closing, power MOSFET pipe may there is saturation condition.Result can not be opened linearly power transfer in the time of conducting, causes the decrease in efficiency of converter and reliability to reduce.
As shown in Figure 4, described highly compatible voltage controlled oscillator Current Control, in the design of classical inverse excitation type switch power-supply, remove the control of reference voltage to timing resistor, introduce a variable voltage to timing resistor and error amplifier, after electric pressure converter is arranged on error amplifier and between voltage controlled oscillator (VCO), be placed on error amplifier and accepted afterwards the variation of whole output voltage with a simple voltage-stabiliser tube, when input voltage minimum, and power output full load, the input voltage that the duty ratio of switching tube will exceed 50%, VCO will reach required evaluation.
On the basis of the method, the corresponding relevant parameter of regulating resistance, electric capacity and inductance again, realizes wide input voltage standard, can realize the voltage input of 150VDC-400VDC at present, 240VDC and mobile 336VDC standard that can compatible telecommunications.
Certainly, can also be according to other requirements, change relevant parameter, realizes the more direct voltage input of Gao Gengkuan.
Claims (4)
1. the method for designing of a novel wide-range power, it is characterized in that: affiliated method for designing comprises five modules: rectification module, relay module, hysteresis comparator module, boost module, flyback module, wherein input voltage is through rectification module, relay 1, boost module, relay 2, flyback module arrives load, hysteresis comparator module also control relay 1 in parallel with rectification module and relay 2 are worked, when input voltage is when high, input voltage directly passes through the input voltage of rectifier bridge as circuit of reversed excitation, two relays are all operated in normally off, middle booster circuit is not worked, in the time that input voltage is lower, by the judgement of hysteresis comparator, control two relay adhesives, two switches are all got to normally open, input voltage becomes V1 after over commutation, then improves voltage through booster circuit and obtain V2, then as the input voltage of circuit of reversed excitation.
2. the method for designing of a kind of novel wide-range power according to claim 1, is characterized in that: in flyback module, adopt highly compatible voltage controlled oscillator Current Control, adopt voltage-controlled element as frequency control device in oscillating circuit.
3. the method for designing of a kind of novel wide-range power according to claim 2, it is characterized in that: described highly compatible voltage controlled oscillator Current Control, in the design of classical inverse excitation type switch power-supply, remove the control of reference voltage to timing resistor, introduce a variable voltage to timing resistor and error amplifier, after electric pressure converter is arranged on error amplifier and between voltage controlled oscillator, be placed on error amplifier and accepted afterwards the variation of whole output voltage with a simple voltage-stabiliser tube, when input voltage minimum, and power output full load, the duty ratio of switching tube will exceed 50%, the input voltage of VCO will reach required evaluation.
4. the method for designing of a kind of novel wide-range power according to claim 3, is characterized in that: the relevant parameter of corresponding regulating resistance, electric capacity and inductance, realize wide input voltage standard.
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| CN201410106106.XA CN103904894A (en) | 2014-03-21 | 2014-03-21 | Novel wide-range power supply designing method |
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| CN201410106106.XA CN103904894A (en) | 2014-03-21 | 2014-03-21 | Novel wide-range power supply designing method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105578656A (en) * | 2016-01-27 | 2016-05-11 | 张家港麦智电子科技有限公司 | LED constant-current driving power supply with 120-347V AC wide input voltage range |
| CN109004675A (en) * | 2018-08-27 | 2018-12-14 | 湖北工业大学 | A kind of wide input accessory power supply of adaptive switching winding |
| CN110113034A (en) * | 2019-05-22 | 2019-08-09 | 澳特翼南京电子科技有限公司 | A kind of high precision wide range voltage comparator circuit |
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| US5440473A (en) * | 1993-09-17 | 1995-08-08 | Toko, Inc. | AC-DC converter |
| CN201774471U (en) * | 2010-09-09 | 2011-03-23 | 浙江普金电源科技有限公司 | Switch power supply with super wide input range |
| JP2011223755A (en) * | 2010-04-09 | 2011-11-04 | Honda Motor Co Ltd | Dc-dc converter |
| CN103241199A (en) * | 2012-02-08 | 2013-08-14 | 欧姆龙汽车电子株式会社 | Power-supply device |
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2014
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Patent Citations (4)
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| US5440473A (en) * | 1993-09-17 | 1995-08-08 | Toko, Inc. | AC-DC converter |
| JP2011223755A (en) * | 2010-04-09 | 2011-11-04 | Honda Motor Co Ltd | Dc-dc converter |
| CN201774471U (en) * | 2010-09-09 | 2011-03-23 | 浙江普金电源科技有限公司 | Switch power supply with super wide input range |
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| 陈丹江 等: "一种超宽输入范围的开关电源的设计", 《电气自动化》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105578656A (en) * | 2016-01-27 | 2016-05-11 | 张家港麦智电子科技有限公司 | LED constant-current driving power supply with 120-347V AC wide input voltage range |
| CN109004675A (en) * | 2018-08-27 | 2018-12-14 | 湖北工业大学 | A kind of wide input accessory power supply of adaptive switching winding |
| CN109004675B (en) * | 2018-08-27 | 2021-12-03 | 湖北工业大学 | Wide input auxiliary power supply of self-adaptation switching winding |
| CN110113034A (en) * | 2019-05-22 | 2019-08-09 | 澳特翼南京电子科技有限公司 | A kind of high precision wide range voltage comparator circuit |
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Application publication date: 20140702 |