CN103997235A - Air cooling multi-output high-power power source - Google Patents
Air cooling multi-output high-power power source Download PDFInfo
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- CN103997235A CN103997235A CN201410243894.7A CN201410243894A CN103997235A CN 103997235 A CN103997235 A CN 103997235A CN 201410243894 A CN201410243894 A CN 201410243894A CN 103997235 A CN103997235 A CN 103997235A
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Abstract
The invention discloses an air cooling multi-output high-power power source which comprises a three-phase filter. The input end of the three-phase filter is connected with an alternating-current source, the output end of the three-phase filter is connected with the input end of an input rectifying and power factor correcting circuit, the output end of the input rectifying and power factor correcting circuit is connected with the input end of a 48 V control protection circuit and the input end of a 48 V circuit main power conversion circuit respectively, the output end of the 48 V circuit main power conversion circuit is connected with the input end of a 48 V secondary output rectifying and filtering circuit, and the driving end of the 48 V control protection circuit is connected with the input end of the 48 V circuit main power conversion circuit and the output end of the secondary output rectifying and filtering circuit respectively. The high-power power source is provided with four outputs which are mutually isolated and cannot interfere with one another and is wide in application range.
Description
Technical field
The present invention relates to field of switch power, be specifically related to a kind of air-cooled multichannel output large power supply.
Background technology
In the design of Switching Power Supply, should take into full account the environment for use of power supply, along with the development of power supply, Switching Power Supply is often required to be designed to have the function of multichannel output.At present, the wind-cooling heat dissipating equipment of high power switching power supply is all generally external power supply, has not only brought troublesome poeration but also because on-the-spot device or circuit can cause the on-the-spot problem such as chaotic too much.In a multiple-output electric power, especially there is the power supply of 4 tunnels and above isolation output, it is more that general directly use DC-DC converter forms, make overall efficiency not high, cost is larger, and maintenance cost is high, and this has just limited the usability of power supply under some occasion.
Summary of the invention
The technical problem to be solved in the present invention is to provide that a kind of circuit is simple, cost is lower, reliability and efficiency is higher, can reach the air-cooled multichannel output large power supply that multichannel output requires.
For solving the problems of the technologies described above, the present invention by the following technical solutions:
A kind of air-cooled multichannel output large power supply, comprise Three-phase electric-wave filter, its input termination alternating current, its output is connected with the input of input rectifying and circuit of power factor correction, the output of input rectifying and circuit of power factor correction respectively with 48V control protection electric circuit, the input of 48V main circuit power conversion circuit is connected, the output of described 48V main circuit power conversion circuit is connected with the input of 48V level output rectifier and filter, the drive end of described 48V control protection electric circuit respectively with the input of 48V main circuit power conversion circuit, the output of the current rectifying and wave filtering circuit of secondary output is connected.
The current rectifying and wave filtering circuit of described 48V level output has three tunnel outputs, and the output of Gai San road is respectively 48V output, 5V output and 12V output; Wherein 5V output is connected with the output of the current rectifying and wave filtering circuit of 48V level output through 48V-5VDC-DC transducer, and 12V output is connected with the output of the current rectifying and wave filtering circuit of 48V level output through 48V-12VDC-DC change-over circuit.
Also comprise 28V output circuit, described 28V output circuit comprises current rectifying and wave filtering circuit and the 28V control protection electric circuit of 28V circuit power translation circuit, 28V level output; The input of described 28V circuit power translation circuit is connected with the output of input rectifying and circuit of power factor correction, the drive end of 28V control protection electric circuit respectively, and its output is connected with the input of the current rectifying and wave filtering circuit of 28V level output; The input of described 28V control protection electric circuit is connected with the output of the current rectifying and wave filtering circuit of input rectifying and circuit of power factor correction, 28V level output respectively.
Described 48V control protection electric circuit is exported control 28V output circuit by 48V and is connected with 28V control protection electric circuit.
Described 48V output is controlled 28V output circuit and is mainly made up of diode, not gate, triode, photoelectrical coupler, electric capacity and multiple resistance; The input of not gate is connected with the negative electrode of diode, and the anode of diode is connected with 48V control protection electric circuit, and the output of not gate is connected with the base stage of triode through the first resistance; The emitter of triode is connected with the base stage of triode through the second resistance, and described the 3rd one end of resistance and the negative electrode of diode are connected, ground connection after the 3rd other end of resistance and the emitter of triode are connected; The collector electrode of described triode is connected with the negative electrode input of photoelectrical coupler; the anode input of photoelectrical coupler is connected with power supply through the 4th resistance; photoelectrical coupler emitter output divides two-way; the 5th resistance of wherein leading up to connects power supply; the input with 28V control protection electric circuit on another road is connected; the grounded collector of photoelectrical coupler, described electric capacity is connected between the emitter output and collector output of photoelectrical coupler.
The invention has the beneficial effects as follows: (1) large power supply of the present invention has four tunnel outputs, Qie Gai tetra-tunnel output isolation mutually, do not interfere with each other, and usable range is wide.(2) two main circuits form by discrete device, and power is larger, and the break-make of 48V can control the break-make of 28V, can ensure that power supply can still not work because blower fan is out of service in the output of 28V main road, finally cause power supply excess Temperature and burn out.Main circuit is made up of discrete device in addition, and price is low, and overall efficiency is high, two large main circuit output rated power are respectively 480W and 2800W, and wherein 480W can power to power supply cooling system, like this can be by power supply, blower fan and other needed assemblies are made entirety, with easy to use.
Brief description of the drawings
Fig. 1 is circuit block diagram of the present invention;
Fig. 2 is that 28V output circuit figure is controlled in 48V output.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
As shown in Figure 1, a kind of air-cooled multichannel output large power supply, comprise Three-phase electric-wave filter 1, its input termination alternating current, its output is connected with the input of input rectifying and circuit of power factor correction 2, the output of input rectifying and circuit of power factor correction 2 respectively with 48V control protection electric circuit 5, the input of 48V main circuit power conversion circuit 3 is connected, the output of described 48V main circuit power conversion circuit 3 is connected with the input of 48V level output rectifier and filter 4, the drive end of described 48V control protection electric circuit 5 respectively with the input of 48V main circuit power conversion circuit 3, the output of the current rectifying and wave filtering circuit 4 of secondary output is connected.
The current rectifying and wave filtering circuit 4 of 48V level output has three tunnel outputs, and the output of Gai San road is respectively 48V output, 5V output and 12V output; Wherein 5V output is connected with the output of the current rectifying and wave filtering circuit 4 of 48V level output through 48V-5VDC-DC transducer 6, and 12V output is connected with the output of the current rectifying and wave filtering circuit 4 of 48V level output through 48V-12VDC-DC change-over circuit 7.48V output rated power can reach 500W, can power to cooling system, and 5V and 12V output can be for them, such as monitoring etc.The assembly of this power supply and blower fan and other needs can be made to an entirety like this.
Large power supply of the present invention also comprises 28V output circuit, and described 28V output circuit comprises current rectifying and wave filtering circuit 9 and the 28V control protection electric circuit 10 of 28V circuit power translation circuit 8,28V level output; The input of 28V circuit power translation circuit 8 is connected with the output of input rectifying and circuit of power factor correction 2, the drive end of 28V control protection electric circuit 10 respectively, and its output is connected with the input of the current rectifying and wave filtering circuit 9 of 28V level output; The input of 28V control protection electric circuit 10 is connected with the output of the current rectifying and wave filtering circuit 9 of input rectifying and circuit of power factor correction 2,28V level output respectively.
Described 48V control protection electric circuit 5 is exported control 28V output circuit 11 by 48V and is connected with 28V control protection electric circuit 10.48V output is controlled 28V output circuit 11 and is mainly made up of diode V1, not gate N1, triode V2, photoelectrical coupler V3, capacitor C 1 and multiple resistance R 1, R2, R3, R4, R5; The input of not gate N1 is connected with the negative electrode of diode V1, and the anode of diode V1 is connected with 48V control protection electric circuit 5, and the output of not gate N1 is connected with the base stage of triode V2 through the first resistance R 2; The emitter of triode V2 is connected with the base stage of triode V2 through the second resistance R 3, and one end of described the 3rd resistance R 1 is connected with the negative electrode of diode V1, ground connection after the other end of the 3rd resistance R 1 is connected with the emitter of triode V2; The collector electrode of described triode V2 is connected with the negative electrode input of photoelectrical coupler V3; the anode input of photoelectrical coupler V3 is connected with power supply through the 4th resistance R 4; photoelectrical coupler V3 emitter output divides two-way; the 5th resistance R 5 of wherein leading up to connects power supply; the input with 28V control protection electric circuit 10 on another road is connected; the grounded collector of photoelectrical coupler V3, described capacitor C 1 is connected between the emitter output and collector output of photoelectrical coupler V3.
48V control protection electric circuit 5 collects the signal of 48V output, passes the signal along to 28V control protection electric circuit 10, and then controls the break-make of 28V circuit.Fig. 2 is the circuit diagram that 28V output is controlled in 48V output; as shown in Figure 2; in the situation of the normal work of 48V circuit; when the anode of diode V1 is low level, the output high level of not gate N1, triode V2 conducting; optocoupler V3 conducting; Total fault output low level, when 28V control protection electric circuit 10 detects low level, conducting 28V output.Once 48V exports disconnection, the anode of diode V1 is high level, not gate N1 output low level, and triode V2 cut-off, not conducting of optocoupler V3, Total fault is high level, 28V control circuit detects high level, turn-offs 28V output.
A kind of novel air-cooled Switching Power Supply of the present invention, can be widely used in industrial instrument, communications and transportation communication apparatus, and the main equipments such as industrial computer and scientific research and test are as DC power supply, and power can reach three kilowatts of ranks.This power supply has 4 tunnel outputs, respectively 5V, 12V, 48V and 28V, 48V and 28V are two main road outputs, its principle is roughly the same, be all through Three-phase electric-wave filter to being rectified to input storage capacitor, realize power factor correction, adopt phase shifting control ZVZCS-PWM DC-DC full-bridge converter technique, the secondary rectifying and wave-filtering that connects of power conversion, forms more stable direct current output, powers to various device.48V output rated power can reach 500W, can be for blower fan, solved the powerup issue of power supply heat sinking equipment, and the break-make of 48V can be controlled the break-make of 28V, can ensure not the output of 28V main road still to work because blower fan is out of service, finally cause power supply excess Temperature and burn out.
Claims (5)
1. an air-cooled multichannel output large power supply, it is characterized in that: comprise Three-phase electric-wave filter (1), its input termination alternating current, its output is connected with the input of input rectifying and circuit of power factor correction (2), the output of input rectifying and circuit of power factor correction (2) respectively with 48V control protection electric circuit (5), the input of 48V main circuit power conversion circuit (3) is connected, the output of described 48V main circuit power conversion circuit (3) is connected with the input of 48V level output rectifier and filter (4), the drive end of described 48V control protection electric circuit (5) respectively with the input of 48V main circuit power conversion circuit (3), the output of the current rectifying and wave filtering circuit (4) of secondary output is connected.
2. the air-cooled multichannel output of one according to claim 1 large power supply, is characterized in that: the current rectifying and wave filtering circuit (4) of described 48V level output has three tunnel outputs, and the output of Gai San road is respectively 48V output, 5V output and 12V output; Wherein 5V output is connected with the output of the current rectifying and wave filtering circuit (4) of 48V level output through 48V-5VDC-DC transducer (6), and 12V output is connected with the output of the current rectifying and wave filtering circuit (4) of 48V level output through 48V-12VDC-DC change-over circuit (7).
3. the air-cooled multichannel output of one according to claim 1 large power supply, it is characterized in that: also comprise 28V output circuit, described 28V output circuit comprises current rectifying and wave filtering circuit (9) and the 28V control protection electric circuit (10) of 28V circuit power translation circuit (8), 28V level output; The input of described 28V circuit power translation circuit (8) is connected with the output of input rectifying and circuit of power factor correction (2), the drive end of 28V control protection electric circuit (10) respectively, and its output is connected with the input of the current rectifying and wave filtering circuit (9) of 28V level output; The input of described 28V control protection electric circuit (10) is connected with the output of the current rectifying and wave filtering circuit (9) of input rectifying and circuit of power factor correction (2), 28V level output respectively.
4. according to the air-cooled multichannel output of the one described in any one in claim 1-3 large power supply, it is characterized in that: described 48V control protection electric circuit (5) is exported control 28V output circuit (11) by 48V and is connected with 28V control protection electric circuit (10).
5. the air-cooled multichannel output of one according to claim 4 large power supply, is characterized in that: described 48V output is controlled 28V output circuit (11) and is mainly made up of diode (V1), not gate (N1), triode (V2), photoelectrical coupler (V3), electric capacity (C1) and multiple resistance (R1, R2, R3, R4, R5); The input of not gate (N1) is connected with the negative electrode of diode (V1), and the anode of diode (V1) is connected with 48V control protection electric circuit (5), and the output of not gate (N1) is connected with the base stage of triode (V2) through the first resistance (R2); The emitter of triode (V2) is connected with the base stage of triode (V2) through the second resistance (R3), one end of described the 3rd resistance (R1) is connected with the negative electrode of diode (V1), ground connection after the other end of the 3rd resistance (R1) is connected with the emitter of triode (V2); The collector electrode of described triode (V2) is connected with the negative electrode input of photoelectrical coupler (V3); the anode input of photoelectrical coupler (V3) is connected with power supply through the 4th resistance (R4); photoelectrical coupler (V3) emitter output divides two-way; the 5th resistance (R5) of wherein leading up to connects power supply; the input with 28V control protection electric circuit (10) on another road is connected; the grounded collector of photoelectrical coupler (V3), described electric capacity (C1) is connected between the emitter output and collector output of photoelectrical coupler (V3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410243894.7A CN103997235B (en) | 2014-06-04 | 2014-06-04 | Air cooling multi-output high-power power source |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410243894.7A CN103997235B (en) | 2014-06-04 | 2014-06-04 | Air cooling multi-output high-power power source |
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| CN103997235A true CN103997235A (en) | 2014-08-20 |
| CN103997235B CN103997235B (en) | 2017-01-25 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2834005Y (en) * | 2005-09-09 | 2006-11-01 | 瑞谷科技(深圳)有限公司 | Multi-way output power supply for communication system |
| CN201869098U (en) * | 2010-11-04 | 2011-06-15 | 西安伟京电子制造有限公司 | Dual-output power supply circuit device |
| CN102761266A (en) * | 2012-07-24 | 2012-10-31 | 合肥华耀电子工业有限公司 | High-power switching power supply circuit with multiple outputs |
| CN203911785U (en) * | 2014-06-04 | 2014-10-29 | 合肥华耀电子工业有限公司 | Air-cooled multi-output high-power power supply |
-
2014
- 2014-06-04 CN CN201410243894.7A patent/CN103997235B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2834005Y (en) * | 2005-09-09 | 2006-11-01 | 瑞谷科技(深圳)有限公司 | Multi-way output power supply for communication system |
| CN201869098U (en) * | 2010-11-04 | 2011-06-15 | 西安伟京电子制造有限公司 | Dual-output power supply circuit device |
| CN102761266A (en) * | 2012-07-24 | 2012-10-31 | 合肥华耀电子工业有限公司 | High-power switching power supply circuit with multiple outputs |
| CN203911785U (en) * | 2014-06-04 | 2014-10-29 | 合肥华耀电子工业有限公司 | Air-cooled multi-output high-power power supply |
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| CN103997235B (en) | 2017-01-25 |
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