CN203537248U - Wide-input AC/DC power supply converter provided with PFC function - Google Patents
Wide-input AC/DC power supply converter provided with PFC function Download PDFInfo
- Publication number
- CN203537248U CN203537248U CN201320715738.7U CN201320715738U CN203537248U CN 203537248 U CN203537248 U CN 203537248U CN 201320715738 U CN201320715738 U CN 201320715738U CN 203537248 U CN203537248 U CN 203537248U
- Authority
- CN
- China
- Prior art keywords
- circuit
- input
- pfc
- power supply
- wide
- Prior art date
- 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.)
- Expired - Fee Related
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
Landscapes
- Rectifiers (AREA)
- Dc-Dc Converters (AREA)
Abstract
The utility model discloses a wide-input AC/DC power supply converter provided with a PFC function. The wide-input AC/DC power supply converter comprises an input filtering network, an input surge-limiting circuit, a rectification filter circuit, a pre-stage PFC circuit, a PWM control circuit, a voltage transformation circuit, an output rectification filter circuit and a feedback circuit. According to the utility model, a high-performance PWM chip is adopted as the core, the PFC control, the PWM control and a protective circuit are integrated together, and two circuits utilize the same switching frequency for control; by adopting the wide-input AC/DC power supply converter, the global AC input standard is met, the input range can meet the AC85-264V requirement, and in a relatively wide input voltage range, the corresponding power supply can be effectively provided to ensure the normal work of the circuit; the circuit is provided with the active PFC function, the pre-stage circuit is provided with a line power factor higher than 0.99, and the efficiency of the whole machine is effectively increased to above 93%; and the circuit is simple, the reliability is high, and the service lifetime of the device is substantially improved.
Description
Technical field
The utility model relates to a kind of power supply changeover device, is specifically related to the AC/DC power supply changeover device that a kind of wide region input has PFC.
Background technology
Power supply changeover device, just as the heart of human body, be the power of all electric equipment, but power supply form unlike heart is single, and when the parameter of sign power supply characteristic has power, voltage, frequency, noise and band to carry, parameter changes etc.General electric power (as civil power) will just can meet the requirement of use through conversion, what particularly domestic and international various power equipment exchanged in the last few years is day by day frequent, for being applicable to the requirement of various countries AC input standard and energy-conserving and environment-protective, proposed wide region input and conversion efficiency is proposed to higher demand, conventional power source can not meet these requirements.For the problems referred to above, Power Management Design has been introduced wide region input and PFC technology.
The English full name of PFC is " Power Factor Correction ", the meaning is " power factor correction ", power factor refers to the relation between effective power and total power consumption (apparent power), and namely effective power is divided by the ratio of total power consumption (apparent power).Substantially power factor (PF) can be weighed the degree that electric power is used effectively, and when power factor (PF) value is larger, represents that its electric power utilance is higher.AC/DC power supply changeover device is a kind of condenser input type circuit, and the phase difference between its electric current and voltage can cause the loss of exchange power, now just needs pfc circuit to improve power factor.Current PFC has two kinds, a kind ofly also claims active formula PFC for passive PFC (also claiming passive PFC) and active PFC().
Passive PFC generally adopts inductance compensation method to make to exchange phase difference between the fundamental current of input and voltage to reduce to improve power factor, but the power factor of passive PFC is not very high, can only reach 0.7-0.8; Active PFC is comprised of inductance capacitance and electronic devices and components, and volume is little, can reach very high power factor, but cost to exceed passive PFC some.When the harmonic wave standard of European EN is more and more stricter, the quality of inductance volume production needs to promote, and production difficulty will improve.Weight increase makes power supply unit in transportation, have the risk of damage.As fixing in internal power supply node structure incorrect, easily produce vibrating noise.When power supply unit output surpasses more than 300 watts, passive PFC will more not have competitiveness in material cost and properties of product performance.Now adopt on the market the power supply of pfc circuit few, and adopt active PFC circuit still less.
Utility model content
The purpose of this utility model is for the problems referred to above, provides a kind of wide region input to have the AC/DC power supply changeover device of PFC, can in compared with wide input voltage range, all can effectively provide corresponding power supply, and assurance circuit is normally worked.
For achieving the above object, the technical scheme that the utility model adopts is:
Wide region input has an AC/DC power supply changeover device of PFC, comprises input filter network, input limit surge circuit, current rectifying and wave filtering circuit, prime pfc circuit, pwm control circuit, voltage conversion circuit, output rectifier and filter and feedback circuit; Wherein, described input filter network is directly connected with current rectifying and wave filtering circuit or limits surge circuit to connect by input; Described current rectifying and wave filtering circuit connects prime PFC, and described prime PFC is directly connected with voltage conversion circuit, or connects by pwm control circuit; Described voltage conversion circuit connects output rectifier and filter, and described output rectifier and filter connects feedback circuit and rear class load, and feedback circuit returns feedback signal to pwm control circuit.
It is core that AC/DC power supply changeover device of the present utility model adopts PWM chip, by PFC control, PWM control and protection is together circuit integrated, two cover circuit are used same switching frequency to control.
AC/DC power supply changeover device operation principle of the present utility model is: input filter network is mainly that civil power entrance spike interference filtering is fallen, the restriction of inrush current when limit in-rush current limiting circuit completes power initiation, through current rectifying and wave filtering circuit, be converted to the pressure pulsating voltage that direct current is high, after prime pfc circuit, stable output is at about DC375V left and right high pressure, pwm circuit completes the control to voltage conversion circuit, voltage conversion circuit carries out the transmission of required low-voltage dc voltage and energy, feedback network complete to the control of the stability of output voltage after output rectifier and filter for rear class load provides stable power-supplying.
beneficial effect
The feature that the AC/DC power supply changeover device that wide region input of the present utility model has PFC has is:
AC/DC power supply changeover device of the present utility model is for several shortcomings of traditional conventional power source input range, carried out brand-new design and perfect, thereby effectively promoted the input range of power supply, can meet global AC input standard, input range can meet AC85-264V demand, in compared with wide input voltage range, all can effectively provide corresponding power supply, assurance circuit is normally worked.
It is core that AC/DC power supply changeover device of the present utility model adopts High Performance PWM chip, integrate the active PFC of transducer and power conversion function, peripheral components is less, in active PFC circuit, do not need standby transformer, simple circuit, front stage circuits has the line power factor higher than 0.99, effectively improve on overall efficiency to 93%, and there is low-loss and the advantage such as highly reliable; Active PFC output dc voltage ripple is very little, and be 2 times of 100Hz/120Hz(power frequencies) sine wave, therefore adopt the power supply of active PFC not need to adopt very jumbo filter capacitor, output does not change with input voltage fluctuation, therefore can obtain high stability output voltage.
AC/DC power supply changeover device of the present utility model has autonomous type delay circuit, also has active PFC function simultaneously, and its operating state is not subject to the impact of input voltage range, has greatly widened the occasion of its application.
Accompanying drawing explanation
Fig. 1 is the application principle block diagram of the utility model in alternating current circuit.
Fig. 2 is the application principle block diagram of the utility model in DC circuit.
Embodiment
Below in conjunction with accompanying drawing, the utility model is elaborated, thereby so that advantage of the present utility model and feature can be easier to be it will be appreciated by those skilled in the art that, protection range of the present utility model is made to more explicit defining.
As shown in Figure 1, a kind of wide region input has the AC/DC power supply changeover device of PFC, comprise input filter network, input limit surge circuit, current rectifying and wave filtering circuit, prime pfc circuit, pwm control circuit, voltage conversion circuit, output rectifier and filter and feedback circuit; Wherein, described input filter network is directly connected with current rectifying and wave filtering circuit or limits surge circuit to connect by input; Described current rectifying and wave filtering circuit connects prime PFC, and described prime PFC is directly connected with voltage conversion circuit, or connects by pwm control circuit; Described voltage conversion circuit connects output rectifier and filter, and described output rectifier and filter connects feedback circuit and rear class load, and feedback circuit returns feedback signal to pwm control circuit.
It is core that AC/DC power supply changeover device of the present utility model adopts PWM chip, by PFC control, PWM control and protection is together circuit integrated, two cover circuit are used same switching frequency to control.
AC/DC power supply changeover device operation principle of the present utility model is: input filter network is mainly that civil power entrance spike interference filtering is fallen, the restriction of inrush current when limit in-rush current limiting circuit completes power initiation, through current rectifying and wave filtering circuit, be converted to the pressure pulsating voltage that direct current is high, after prime pfc circuit, stable output is at about DC375V left and right high pressure, pwm circuit completes the control to voltage conversion circuit, voltage conversion circuit carries out the transmission of required low-voltage dc voltage and energy, feedback network complete to the control of the stability of output voltage after output rectifier and filter for rear class load provides stable power-supplying.
The feature that the AC/DC power supply changeover device that wide region input of the present utility model has PFC has is:
function admirable, input range can meet AC85-264V demand.
AC/DC power supply changeover device of the present utility model is for several shortcomings of traditional conventional power source input range, carried out brand-new design and perfect, thereby effectively promoted the input range of power supply, can meet global AC input standard, input range can meet AC85-264V demand, in compared with wide input voltage range, all can effectively provide corresponding power supply, assurance circuit is normally worked.
It is core that AC/DC power supply changeover device of the present utility model adopts High Performance PWM chip, integrate the active PFC of transducer and power conversion function, peripheral components is less, in active PFC circuit, do not need standby transformer, simple circuit, front stage circuits has the line power factor higher than 0.99, effectively improve on overall efficiency to 93%, and there is low-loss and the advantage such as highly reliable; Active PFC output dc voltage ripple is very little, and be 2 times of 100Hz/120Hz(power frequencies) sine wave, therefore adopt the power supply of active PFC not need to adopt very jumbo filter capacitor, output does not change with input voltage fluctuation, therefore can obtain high stability output voltage.
AC/DC power supply changeover device of the present utility model has autonomous type delay circuit, also has active PFC function simultaneously, and its operating state is not subject to the impact of input voltage range, has greatly widened the occasion of its application.
The utility model not only may, for the circuit of ac-input type, as shown in Figure 1, also can, for the circuit of direct-current input-type, as Fig. 2, can meet the circuit application of DC100-400V input.
Finally it should be noted that: obviously, above-described embodiment is only for the utility model example is clearly described, and the not restriction to execution mode.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without also giving all execution modes.And the apparent variation of being amplified out thus or change are still among protection range of the present utility model.
Claims (2)
1. wide region input has the AC/DC power supply changeover device of PFC, it is characterized in that: comprise input filter network, input limit surge circuit, current rectifying and wave filtering circuit, prime pfc circuit, pwm control circuit, voltage conversion circuit, output rectifier and filter and feedback circuit; Wherein, described input filter network is directly connected with current rectifying and wave filtering circuit or limits surge circuit to connect by input; Described current rectifying and wave filtering circuit connects prime PFC, and described prime PFC is directly connected with voltage conversion circuit, or connects by pwm control circuit; Described voltage conversion circuit connects output rectifier and filter, and described output rectifier and filter connects feedback circuit and rear class load, and feedback circuit returns feedback signal to pwm control circuit.
2. wide region according to claim 1 input has the AC/DC power supply changeover device of PFC, it is characterized in that: adopting PWM chip is core, by PFC control, PWM control and protection is together circuit integrated, two cover circuit are used same switching frequency to control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320715738.7U CN203537248U (en) | 2013-11-14 | 2013-11-14 | Wide-input AC/DC power supply converter provided with PFC function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320715738.7U CN203537248U (en) | 2013-11-14 | 2013-11-14 | Wide-input AC/DC power supply converter provided with PFC function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203537248U true CN203537248U (en) | 2014-04-09 |
Family
ID=50423419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320715738.7U Expired - Fee Related CN203537248U (en) | 2013-11-14 | 2013-11-14 | Wide-input AC/DC power supply converter provided with PFC function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203537248U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106954315A (en) * | 2017-05-08 | 2017-07-14 | 深圳创维－Rgb电子有限公司 | The driving power supply and television set of a kind of connection in series-parallel LED light bar network |
| CN108093669A (en) * | 2015-09-18 | 2018-05-29 | 依赛彼集团公司 | Power supply for welding and cutting apparatus |
-
2013
- 2013-11-14 CN CN201320715738.7U patent/CN203537248U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108093669A (en) * | 2015-09-18 | 2018-05-29 | 依赛彼集团公司 | Power supply for welding and cutting apparatus |
| CN106954315A (en) * | 2017-05-08 | 2017-07-14 | 深圳创维－Rgb电子有限公司 | The driving power supply and television set of a kind of connection in series-parallel LED light bar network |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205377693U (en) | Output current continuously adjustable high efficiency switching power supply | |
| CN107086763A (en) | Bimodulus Switching Power Supply | |
| TW201406020A (en) | Passive power factor correction circuit | |
| CN203537248U (en) | Wide-input AC/DC power supply converter provided with PFC function | |
| Darly et al. | A novel dual boost rectifier for power factor improvement | |
| CN108809128A (en) | A kind of unmanned electromechanical sources of 30kW | |
| CN206422703U (en) | A kind of single-phase AC DC converters corrected based on high power factor | |
| CN102183683A (en) | Switch power supply-based single-phase low power consumption intelligent electric energy meter | |
| CN208461711U (en) | A kind of unmanned electromechanical source of 30kW | |
| CN209447016U (en) | A kind of switching power circuit and frequency-variable air conditioner outdoor machine | |
| Rajappan et al. | An efficient bridgeless power factor correction boost converter | |
| CN207339643U (en) | One kind is without high-power factor compensation circuit in PFC | |
| CN207039477U (en) | A kind of bimodulus Switching Power Supply | |
| CN105099162A (en) | Composite type high-efficiency power factor correction circuit | |
| CN203015174U (en) | Led drive circuit | |
| CN206452314U (en) | A kind of Switching Power Supply | |
| CN208316590U (en) | A kind of novel LWD host PFC correction regulated power supply system | |
| CN111181377B (en) | Power factor correction circuit | |
| CN207368895U (en) | rectification circuit and switching power supply | |
| CN106487081A (en) | Mains charger circuit | |
| CN207083022U (en) | A kind of power module | |
| CN111835208A (en) | Switching power supply with PFC circuit | |
| CN206727875U (en) | A kind of cable working power adjusting means | |
| CN205305192U (en) | Energy -conserving circuit of new efficiency standard of ultralow stand -by power consumption of high power factor | |
| CN204835967U (en) | High efficiency notebook AC -DC adapter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140409 Termination date: 20181114 |