CN203466723U - Novel DC-DC secondary power source converter - Google Patents
Novel DC-DC secondary power source converter Download PDFInfo
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- CN203466723U CN203466723U CN201320064176.4U CN201320064176U CN203466723U CN 203466723 U CN203466723 U CN 203466723U CN 201320064176 U CN201320064176 U CN 201320064176U CN 203466723 U CN203466723 U CN 203466723U
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Abstract
The utility model relates to the field of power sources and provides a novel DC-DC secondary power source converter. The objective of the utility model is to provide a power source module which is advantageous in realization of multi-channel output, low ripple interference, high efficiency and high power. The novel DC-DC secondary power source converter of the utility model is characterized in that the novel DC-DC secondary power source converter includes a secondary power source converter, a filtering module and a switching circuit; the switching circuit is connected with the input end of the secondary power source converter through the filtering module; and the output end of the secondary power source converter is connected with the filtering module. With the novel DC-DC secondary power source converter provided by the utility model, the conversion efficiency of a multiple-channel power source can be effectively improved; noise interference of the multiple-channel power source can be decreased; the size of the power source can be decreased; surge protection can be additionally realized; the precision of output voltage is high; load regulation rate is high; and the comprehensive performance of the multiple-channel power source can be greatly enhanced.
Description
Technical field
The utility model relates to field of power supplies, particularly a kind of novel DC-DC secondary power supply converter.
Background technology
Although just very little interference of output ripple when output DC signal voltage level signal is high, when this output DC signal voltage is low, this ripple becomes a notable feature.Due to many modern semiconductor devices DC voltage level as low in being typically operated in of microprocessor, ripple can disturb the normal operation of this equipment; The permission ripple of typical modern semiconductor devices is greatly about 1 ﹪ of DC voltage. and for the semiconductor equipment that is operated in lower DC voltage, voltage ripple more and more receives publicity, because operating voltage reduces, definitely allows ripple also to decrease.
One of method that minimizes output ripple in prior art is to improve the filter capacity of this transducer: by increasing the capacity of capacitor in low-pass filtering and/or reducing impedance, and it is typically very expensive really to have the capacitor of series impedance; But large capacitor occupies larger volume and low-impedance capacitor is very expensive; Alternatively, larger inductor can be used for improving filter capacity, but larger inductor also occupies more space and more easily saturated.
The another kind of method that reduces output ripple is: increase the frequency of this output signal, but high-frequency current flows through the iron core medium-high frequency variations of flux that this inductor produces inductor, can increase intimate loss and reduce the efficiency of this inductance.In addition, there is the inductor of low damage core material very expensive.
For meeting the instructions for use of multichannel output, DC-DC power supply can adopt individual module parallel connection to make for realizing, and bulky but this scheme exists, ripple disturbs large, interferes with each other the low series of problems that waits of conversion efficiency between module.
Utility model content
A kind of novel DC-DC secondary power supply converter that the utility model provides, its object is to provide a kind of multichannel output, low moire disturbance, high-power, high efficiency power module realized.
The technical solution of the utility model is achieved in that a kind of novel DC-DC secondary power supply converter, comprise secondary power supply converter, filtration module and switching circuit, described switching circuit is by the input of filtration module connecting secondary supply convertor, and the output of secondary power supply converter is connected with filtration module.
Further, described filtration module comprises anti-common mode disturbances filter and robust mould interference filter, and described anti-common mode disturbances filter and robust mould interference filter are connected in series in input and the output of secondary power supply converter.
Further, described switching circuit comprises tandem type soft switch circuit and active clamp inverse-excitation type soft switch circuit, and described tandem type soft switch circuit and active clamp inverse-excitation type soft switch circuit are connected in series in filtration module.
Described secondary power supply converter comprises voltage conversion unit, LC low-pass filter unit and pulse width control unit, and described voltage conversion unit connects pulse-width regulated unit.
Further, described anti-common mode disturbances filter and robust mould interference filter comprise two inductance and two groups of capacitance group, described capacitance group is that two Capacitance parallel connections that are connected in series are connected in an electric capacity, capacitance group two ends connect respectively inductance and secondary power supply converter, between described two electric capacity that are connected in series, are electrically connected casing.
Described tandem type soft switch circuit comprises main switch, rectifying tube and tandem type transducer, and described main switch, rectifying tube and tandem type transducer are connected in series.
Described active clamp inverse-excitation type soft switch circuit comprises Active Clamped Forward Converters and clamp capacitor, and the transformer of the positive violent change interchanger of described active clamp comprises that symmetry magneting is unshakable in one's determination, and described Active Clamped Forward Converters and clamp capacitor are electrically connected.
Described voltage conversion unit comprises high frequency transformer and rectifier diode, the positive pole of described rectifier diode connects respectively the two ends of high frequency transformer secondary winding, the negative pole of the rectifier diode low pass filter that is connected in parallel, described high frequency transformer armature winding connects pulse width control unit.
A kind of novel DC-DC secondary power supply converter that the utility model provides; effectively improve the conversion efficiency of multiple power supplies; reduce the noise jamming of multiple power supplies; reduce the volume of power supply; increase surge protection; output voltage precision is high, and load regulation is high, has greatly promoted the combination property of multiple power supplies.
Accompanying drawing explanation
Fig. 1: the utility model structural representation.
In figure: 100, switching circuit; 110, tandem type soft switch circuit; 111, main switch; 112, rectifying tube; 113, tandem type transducer; 120, active clamp inverse-excitation type soft switch circuit; 121, Active Clamped Forward Converters; 122, clamp capacitor; 200, filtration module; 210, anti-common mode disturbances filter; 220, robust mould interference filter; 300, secondary power supply converter; 310, voltage conversion unit; 320, LC low-pass filter unit; 330, pulse width control unit; 400, filtration module.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiment.Embodiment based in the utility model, those of ordinary skills are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
As shown in Fig. 1 the utility model structural representation, a kind of novel DC-DC secondary power supply converter that the utility model provides, comprise secondary power supply converter 300, filtration module 200 and switching circuit 100, described switching circuit 100 is by the input of filtration module 200 connecting secondary supply convertors 300, and the output of secondary power supply converter 300 is connected with filtration module 400.Further, described filtration module 200 comprises anti-common mode disturbances filter 210 and robust mould interference filter 220, and described anti-common mode disturbances filter 210 and robust mould interference filter 220 are connected in series in input and the output of secondary power supply converter 300.Further, described switching circuit 100 comprises tandem type soft switch circuit 110 and active clamp inverse-excitation type soft switch circuit 120, and described tandem type soft switch circuit 110 and active clamp inverse-excitation type soft switch circuit 120 are connected in series in filtration module 200.Described secondary power supply converter 300 comprises voltage conversion unit 310, LC low-pass filter unit 320 and pulse width control unit 330, and described voltage conversion unit 310 connects pulse-width regulated unit.Further, described anti-common mode disturbances filter 210 and robust mould interference filter 220 comprise two inductance and two groups of capacitance group, described capacitance group is that two Capacitance parallel connections that are connected in series are connected in an electric capacity, capacitance group two ends connect respectively inductance and secondary power supply converter 300, between described two electric capacity that are connected in series, are electrically connected casing.Described tandem type soft switch circuit 110 comprises main switch 111, rectifying tube 112 and tandem type transducer 113, and described main switch 111, rectifying tube 112 and tandem type transducer 113 are connected in series.Described active clamp inverse-excitation type soft switch circuit 120 comprises Active Clamped Forward Converters 121 and clamp capacitor 122, the transformer of the positive violent change interchanger 121 of described active clamp comprises that symmetry magneting is unshakable in one's determination, and described Active Clamped Forward Converters 121 and clamp capacitor 122 are electrically connected.Described voltage conversion unit 310 comprises high frequency transformer and rectifier diode, the positive pole of described rectifier diode connects respectively the two ends of high frequency transformer secondary winding, the negative pole of the rectifier diode low pass filter that is connected in parallel, described high frequency transformer armature winding connects pulse width control unit 330.
Described anti-common mode disturbances filter 210 and robust mould interference filter 220 are connected in series in supply convertor loop, can effectively reduce interference;
Described tandem type soft switch circuit 110 comprises main switch 111, rectifying tube 112 and tandem type transducer 113; Main switch 111 zero current turning-ons, efficiency are high; Main switch 111 and rectifying tube 112 voltage stresss are little, and output voltage multiway intersection regulation is good; Tandem type transducer 113 can carry out circuit voltage stabilizing closely, its circuit wide input voltage range is more than 4:1, excellent output loading transient response not only can be provided, and not need output filter inductor and current sense and resistor, reduce costs and complexity; Remove output inductor device, shorten and load the delay that step changes, and can not cause voltage circuit mistake.Not only improve the utilization rate of isolating transformer core, also reduced stress and the interference of output element simultaneously, be suitable for the application of high-output power.
Described active clamp inverse-excitation type soft switch circuit 120, comprise Active Clamped Forward Converters 121 and clamp capacitor 122, the transformer core of described Active Clamped Forward Converters 121 is operated in symmetry magneting state, greatly improve utilance unshakable in one's determination, the steady state voltage of clamp capacitor 122 regulates automatically with duty cycle of switching, and duty ratio can be greater than 50%; When supply voltage one regularly, main switch, auxiliary switch stress are little with the variation of input voltage, in the scope that duty ratio and switch stress allow, the situation that can adapt to larger change range of input voltage, and circuit reliability is higher, output does not have filter inductance, has reduced volume.
A kind of novel DC-DC secondary power supply converter that the utility model provides; effectively improve the conversion efficiency of multiple power supplies; reduce the noise jamming of multiple power supplies; reduce the volume of power supply; increase surge protection; output voltage precision is high, and load regulation is high, has greatly promoted the combination property of multiple power supplies.
Certainly; in the situation that not deviating from the utility model spirit and essence thereof; those of ordinary skill in the art should make various corresponding changes and distortion according to the utility model, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the utility model.
Claims (5)
1. a novel DC-DC secondary power supply converter, it is characterized in that: comprise secondary power supply converter (300), filtration module (200) and switching circuit (100), described switching circuit (100) is by the input of filtration module (200) connecting secondary supply convertor (300), and the output of secondary power supply converter (300) is connected with filtration module (400); Described filtration module (200) comprises anti-common mode disturbances filter (210) and robust mould interference filter (220), and described anti-common mode disturbances filter (210) and robust mould interference filter (220) are connected in series in input and the output of secondary power supply converter (300); Described switching circuit (100) comprises tandem type soft switch circuit (110) and active clamp inverse-excitation type soft switch circuit (120), and described tandem type soft switch circuit (110) and active clamp inverse-excitation type soft switch circuit (120) are connected in series in filtration module (200); Described secondary power supply converter (300) comprises voltage conversion unit (310), LC low-pass filter unit (320) and pulse width control unit (330), and described voltage conversion unit (310) connects pulse-width regulated unit.
2. a kind of novel DC-DC secondary power supply converter according to claim 1, it is characterized in that: described anti-common mode disturbances filter (210) and robust mould interference filter (220) comprise two inductance and two groups of capacitance group, described capacitance group is that two Capacitance parallel connections that are connected in series are connected in an electric capacity, capacitance group two ends connect respectively inductance and secondary power supply converter (300), between described two electric capacity that are connected in series, are electrically connected casing.
3. a kind of novel DC-DC secondary power supply converter according to claim 1, it is characterized in that: described tandem type soft switch circuit (110) comprises main switch (111), rectifying tube (112) and tandem type transducer (113), described main switch (111), rectifying tube (112) and tandem type transducer (113) are connected in series.
4. a kind of novel DC-DC secondary power supply converter according to claim 1, it is characterized in that: described active clamp inverse-excitation type soft switch circuit (120) comprises Active Clamped Forward Converters (121) and clamp capacitor (122), the transformer of the positive violent change interchanger of described active clamp (121) comprises that symmetry magneting is unshakable in one's determination, and described Active Clamped Forward Converters (121) and clamp capacitor (122) are electrically connected.
5. a kind of novel DC-DC secondary power supply converter according to claim 1, it is characterized in that: described voltage conversion unit (310) comprises high frequency transformer and rectifier diode, the positive pole of described rectifier diode connects respectively the two ends of high frequency transformer secondary winding, the negative pole of the rectifier diode low pass filter that is connected in parallel, described high frequency transformer armature winding connects pulse width control unit (330).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320064176.4U CN203466723U (en) | 2013-02-03 | 2013-02-03 | Novel DC-DC secondary power source converter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320064176.4U CN203466723U (en) | 2013-02-03 | 2013-02-03 | Novel DC-DC secondary power source converter |
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| Publication Number | Publication Date |
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| CN203466723U true CN203466723U (en) | 2014-03-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320064176.4U Expired - Fee Related CN203466723U (en) | 2013-02-03 | 2013-02-03 | Novel DC-DC secondary power source converter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104158406A (en) * | 2014-08-20 | 2014-11-19 | 成都迈硕电气有限公司 | Positive and negative mixed excitation type switch power supply control method |
-
2013
- 2013-02-03 CN CN201320064176.4U patent/CN203466723U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104158406A (en) * | 2014-08-20 | 2014-11-19 | 成都迈硕电气有限公司 | Positive and negative mixed excitation type switch power supply control method |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140305 Termination date: 20220203 |
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| CF01 | Termination of patent right due to non-payment of annual fee |