CN205304588U - Multi -path output power supply - Google Patents
Multi -path output power supply Download PDFInfo
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- CN205304588U CN205304588U CN201521068342.3U CN201521068342U CN205304588U CN 205304588 U CN205304588 U CN 205304588U CN 201521068342 U CN201521068342 U CN 201521068342U CN 205304588 U CN205304588 U CN 205304588U
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Abstract
The utility model discloses a multi -path output power supply, including input unit, main power conversion unit, multichannel output Rectifier filtering unit and control and feedback Unit, input unit is used for turning into the direct current with external 220V alternating current, and main power conversion unit's input is connected to its output, main power conversion unit is used for the voltage that truns into the different values of multichannel after the direct current vary voltage of inputing to, and the input of multichannel output Rectifier filtering unit is connected to its output, multichannel output Rectifier filtering unit including + 24V, 15V, 15V and + 5V four ways output and correspond filter circuit, just + 24V output circuit's output connection control and feedback Unit's input, main power conversion unit's input is connected to control and feedback Unit's output. The utility model discloses under realization same output voltage and power, reduce power quantity, reduce the hardware cost.
Description
Technical field
This utility model relates to a kind of multiple-output electric power.
Background technology
Along with the development in epoch, almost all of industry is entirely electricalization all. In a lot of application scenarios, power supply carries the power supply task providing the systems such as signal, control, sensor, it is desirable within 24 hours, work without interruption. These occasions are generally electrical network exchange input or DC bus powered, and the power supply mode needed for load such as chip, display device, blower fan etc. mostly is low-voltage direct, and the DC voltage required for different loads is different, conventional electric pressure has 5V, 12V, 15V, 24V, 48V etc.
The output of multichannel low-voltage direct is turned in order to realize single channel voltage (exchange or direct current) input, existing conventional method is multi-stage transformation, the AC-DC module power supply of first order relatively high power or DC-DC power source obtain the low-voltage direct that one-level is stable, and the second level realizes the output of multi-channel DC voltage by multiple small-power DC-DC module power source on first order low-voltage direct bus basis. With a kind of commercially available active filter (ActivePowerFilter, APF) module is example, the total harmonic current compensation ability of module is 75A, wherein employ altogether 5 pieces of modular power sources and carry out the power supplies such as fan, driving, chip, display screen, AC-DC power supply including a 120W, 2 24V turn 15V, output is the DC-DC power source of 15W, and 1 24V turns 15V, output is the DC-DC power source of 20W and 24V turns 5V, output is the DC-DC power source of 10W. These power supply products are complete, it is easy to buy, and this implementation is also that the product development initial stage is more convenient a kind of efficiently. But favorably also there is fraud, use multiple power supply to bring some problems. First being take up room relatively greatly, little module power supply typically requires and is welded on the PCB space of a whole page, occupies layout space, and AC-DC power supply often volume is relatively big, and whole power pack needs bigger space to place. Second is that power supply purchase cost is higher. In upper example, single AC-DC power supply procurement price is generally at 100 yuan to 150 yuan, and single DC-DC power module procurement price is generally between 50 to 70 yuan, and the procurement price of whole power pack is more than 300 yuan.3rd is that the increase of power module quantity also improves probability of malfunction, and later maintenance difficulty is high.
Summary of the invention
The technical problems to be solved in the utility model is in existing technology, and the output of multi-channel DC voltage needs multiple power supplys.
For solving above-mentioned technical problem, this utility model adopts the technical scheme that: a kind of multiple-output electric power, including input block, main power conversion unit, multiple-channel output rectification filtering unit and control and feedback unit; Described input block is for being unidirectional current by external 220V AC conversion, and its outfan connects the input of main power conversion unit; The main power conversion unit voltage for multichannel different value will be transferred after the unidirectional current transformation of input to, its outfan connects the input of multiple-channel output rectification filtering unit; Multiple-channel output rectification filtering unit includes+24V ,+15V ,-15V and+5V four tunnel output and corresponding circuits thereof, and the outfan of+24V output circuit connects and controls and the input of feedback unit; The outfan of control and feedback unit connects the input of main power conversion unit.
This utility model is designed for AC-DC power supply and the following stage multichannel DC-DC power source of the 120W needed in a Active Power Filter-APF (ActivePowerFilter, APF) or reactive-load compensator (StaticVarGenerator, SVG) module. Owing to the overall structure of APF or SVG module is shaped, therefore the volume of this power supply and shape are subject to certain space restriction. This utility model instead of an original AC-DC power supply and following stage multichannel DC-DC power source with the AC-DC power supply that a plurality of voltages exports, and simplifies electric power system, reduces power pack hardware cost.
Further, input block includes input rectification circuit and dc bus filter circuit, and input voltage is single-phase 220V alternating current; Input rectification circuit adopts single-phase rectification bridge, is used for converting alternating current to unidirectional current, and its outfan connects the input of dc bus filter circuit; Dc bus filter circuit adopts the jumbo electrochemical capacitor of two series connection, for the unidirectional current after rectifier bridge rectification is filtered, it is thus achieved that stable input direct-current busbar voltage Vin. Galvanic current is obtained so that the power supply of system is stable by input block.
Further, main power conversion unit includes on-off circuit and transformator; On-off circuit includes two metal-oxide-semiconductor field effect t MOSFET and MOSFET drive circuit; Described MOSFET adopts double-transistor flyback topology, and namely two MOSFET are connected in series, two termination input direct-current busbar voltage Vin, alternate conduction, and half working cycle of each conducting, switching frequency is 65kHz; MOSFET is positioned at below pcb board, is connected with shape radiator with screw by insulation spacer; MOSFET drive circuit is used for receiving and amplifying the driving signal of the control chip offer of peripheral hardware and export to MOSFET; Transformator has the winding that multiple winding, transformator and MOSFET are connected to be primary side winding, and the winding that transformator and three rectifier tubes are connected is secondary output winding, respectively output+24V ,+15V and-15V three road voltage; + 24V road is auxiliary power supply winding, provides direct current supply for the main control chip for peripheral hardware; Transformator adopts EE40 type ferrite magnetic core and supporting skeleton, adopts outer layer plating paint copper cash and enamel-covered wire coiling primary side winding, secondary output winding and auxiliary power supply winding. Selecting this circuit, cost of manufacture is low, effective, simple in construction, it is easy to produce, good heat dissipation effect, the wind-cooling heat dissipating mode of employing, reduce temperature rise than traditional natural heat dissipation mode and on average reach 10 DEG C to 20 DEG C, such that it is able to improve the reliability and stability of hardware, extend service life.
Further, in described multiple-channel output rectification filtering unit :+24V output circuit includes the commutation diode, output filter circuit, power supply indication LED lamp and the output plug terminal that are sequentially connected in series; Output filter circuit adopts the combination type filter structure of capacitor and inductor electric capacity; + 15V output circuit includes the commutation diode, voltage stabilizing chip, output filter circuit, power supply indication LED lamp and the output plug terminal that are sequentially connected in series; Output filter circuit adopts the combination type filter structure of capacitor and inductor electric capacity;-15V output circuit includes the commutation diode, voltage stabilizing chip, output filter circuit, power supply indication LED lamp and the output plug terminal that are sequentially connected in series; Output filter circuit adopts capacitor filtering; + 5V output circuit includes voltage stabilizing chip, output filter circuit, power supply indication LED lamp in sequential series and exports plug terminal, and it is powered by voltage stabilizing chip by+15V output, and output filter circuit adopts the combination type filter structure of capacitor and inductor electric capacity; + 5V ,-15V and+15V output share an output plug terminal. Replace small power supply of the prior art by voltage stabilizing chip so that circuit is simple, cost reduces further, and volume reduces a lot, it is simple to use and place.
Further, control and feedback unit includes control circuit, feedback circuit and protection circuit; Control circuit adopts UC2845 chip, and output control signal gives the MOSFET drive circuit of main power conversion unit; Input sampling+24V the output voltage of feedback circuit, voltage signal is fed back to control circuit by outfan; Protection circuit includes current foldback circuit, output overvoltage protection circuit and output short circuit protection circuit; current foldback circuit sampling MOSFET electric current; the output voltage of output overvoltage protection circuit sampling feedback circuit; the output electric current of output short circuit protection circuit sampling feedback circuit, the outfan of protection circuit connects and the signal that aforementioned sample obtains is passed to control circuit. This design is by MOSFET electric current of sampling, output electric current and output voltage, and feedback protection signal is to control circuit, it is achieved the protection of circuit, further extension fixture service life.
The utility model has the advantages that: under realizing same output voltage and power, number of power sources can be reduced, reduce hardware cost. Pass through contrast experiment, the wind-cooling heat dissipating mode that this utility model adopts, lower than traditional natural heat dissipation mode temperature rise, the temperature rise of wind-cooling heat dissipating only has 10 DEG C to 20 DEG C (being typically in about 40 DEG C through experimental test in natural heat dissipation this power supply of temperature rise), such that it is able to improve the reliability and stability of hardware, extend service life.
Accompanying drawing explanation
Fig. 1 is power principle block diagram of the present utility model.
Detailed description of the invention
Below in conjunction with accompanying drawing, this utility model technology contents is explained:
This utility model includes PCB, components and parts, three kinds of critical pieces of radiator. Components and parts installed in order and is welded on PCB, and installing radiator additional on MOSFET ,+24V rectifier tube ,+15V rectifier tube and voltage stabilizing chip ,-15V rectifier tube and voltage stabilizing chip, the production work of power supply can be completed.
As it is shown in figure 1, this utility model main body is a power supply, including importation, main power conversion part, multiple-channel output rectifying and wave-filtering part and control and feedback fraction. Relation between each several part is such as shown in Fig. 1 power principle block diagram.
Importation includes input rectification circuit and dc bus filter circuit, and input voltage is single-phase 220V alternating current.Input rectification circuit adopts single-phase rectification bridge that AC rectification is become unidirectional current. Dc bus filter circuit adopts the jumbo electrochemical capacitor of two series connection that the unidirectional current after rectifier bridge rectification is filtered, it is thus achieved that stable input direct-current busbar voltage Vin.
Main power conversion part includes on-off circuit and transformator. On-off circuit have employed double-transistor flyback topology, two metal-oxide-semiconductor field effect t (Medal-Oxide-SemiconductorField-EffectTransistor, MOSFET) it is connected in series, two termination input direct-current busbar voltage Vin, alternate conduction, half working cycle of each conducting, switching frequency is 65kHz. Two MOSFET adopt wind-cooling heat dissipating, are placed on below printed circuit board (PrintedCircuitBoard, PCB) plate, are connected with shape radiator with screw by insulation spacer, and radiator is that MOSFET improves heat dispersion. On-off circuit also includes the drive circuit of MOSFET, is used for receiving and amplifying the driving signal of control chip offer and export to MOSFET.
Transformator has multiple winding, and the winding being connected with MOSFET is primary side winding; The winding being connected with three rectifier tubes is secondary output winding, respectively output+24V ,+15V and-15V three road voltage; + 24V road is auxiliary power supply winding, provides direct current supply for main control chip. Transformator adopts EE40 type ferrite magnetic core and supporting skeleton, adopts outer layer plating paint copper cash and enamel-covered wire coiling primary side winding, secondary output winding and auxiliary power supply winding.
Multiple-channel output rectification filtering part divide include+24V ,+15V ,-15V and+5V four tunnel output and corresponding circuits.
+ 24V output circuit includes commutation diode, output filter circuit, power supply indication LED lamp and output plug terminal. Commutation diode is placed on below PCB, is connected with shape radiator with screw by insulation spacer, and radiator is that commutation diode improves heat dispersion. + 24V commutation diode is the same with MOSFET, adopts wind-cooling heat dissipating. Output filter circuit adopts the combination type filter structure of capacitor and inductor electric capacity. Whether LED instruction power supply+24V exports. Output plug terminal adopts the flanged screw locking terminal of 5.08mm spacing 2PIN.
+ 15V output circuit includes commutation diode, voltage stabilizing chip, output filter circuit, power supply indication LED lamp and output plug terminal. Commutation diode is placed on PCB front, is connected with shape radiator with screw by insulation spacer, natural cooling. Voltage stabilizing chip is placed on PCB front, is connected with shape radiator with screw by insulation spacer, natural cooling. Output filter circuit adopts the combination type filter structure of capacitor and inductor electric capacity. Whether LED instruction power supply+15V exports. Output plug terminal and-15V and+5V share a flanged screw locking terminal of 5.08mm spacing 5PIN.
-15V output circuit includes commutation diode, voltage stabilizing chip, output filter circuit, power supply indication LED lamp and output plug terminal. Commutation diode is placed on PCB front, is connected with shape radiator with screw by insulation spacer, natural cooling. Voltage stabilizing chip is placed on PCB front, is connected with shape radiator with screw by insulation spacer, natural cooling. Output filter circuit adopts capacitor filtering. Whether LED instruction power supply-15V exports. Output plug terminal and+15V and+5V share a flanged screw locking terminal of 5.08mm spacing 5PIN.
+ 5V output circuit includes voltage stabilizing chip, output filter circuit, power supply indication LED lamp and output plug terminal.Voltage stabilizing chip soldering is connected on PCB front ,+15V output it is powered. Output filter circuit adopts the combination type filter structure of capacitor and inductor electric capacity. Whether LED instruction power supply+5V exports. Output plug terminal and+15V ,-15V share a flanged screw locking terminal of 5.08mm spacing 5PIN.
Control and feedback fraction includes control circuit, feedback circuit and protection circuit. Wherein control circuit adopts UC2845 chip, exports control signal, by drive circuit to MOSFET. Feedback circuit sampling+24V output voltage, and feed back to control circuit. Protection circuit includes overcurrent protection (OverCurrentProtection; OCP); output over-voltage protection (OverVoltageProtection; OVP); output short circuit protection (ShortCircuitProtection, SCP), by MOSFET electric current of sampling, output electric current and output voltage; feedback protection signal is to control circuit, it is achieved protection.
Claims (5)
1. a multiple-output electric power, is characterized in that: include input block, main power conversion unit, multiple-channel output rectification filtering unit and control and feedback unit;
Described input block is for being unidirectional current by external 220V AC conversion, and its outfan connects the input of main power conversion unit;
The main power conversion unit voltage for multichannel different value will be transferred after the unidirectional current transformation of input to, its outfan connects the input of multiple-channel output rectification filtering unit;
Multiple-channel output rectification filtering unit includes+24V ,+15V ,-15V and+5V four tunnel output and corresponding circuits thereof, and the outfan of+24V output circuit connects and controls and the input of feedback unit;
The outfan of control and feedback unit connects the input of main power conversion unit.
2. a kind of multiple-output electric power according to claim 1, is characterized in that: input block includes input rectification circuit and dc bus filter circuit, and input voltage is single-phase 220V alternating current; Input rectification circuit adopts single-phase rectification bridge, is used for converting alternating current to unidirectional current, and its outfan connects the input of dc bus filter circuit; Dc bus filter circuit adopts the jumbo electrochemical capacitor of two series connection, for the unidirectional current after rectifier bridge rectification is filtered, it is thus achieved that stable input direct-current busbar voltage Vin.
3. a kind of multiple-output electric power according to claim 1 and 2, is characterized in that: main power conversion unit includes on-off circuit and transformator;
On-off circuit includes two metal-oxide-semiconductor field effect t MOSFET and MOSFET drive circuit; Described MOSFET adopts double-transistor flyback topology, and namely two MOSFET are connected in series, two termination input direct-current busbar voltage Vin, alternate conduction, and half working cycle of each conducting, switching frequency is 65kHz; MOSFET is positioned at below pcb board, is connected with shape radiator with screw by insulation spacer; MOSFET drive circuit is used for receiving and amplifying the driving signal of the control chip offer of peripheral hardware and export to MOSFET;
Transformator has the winding that multiple winding, transformator and MOSFET are connected to be primary side winding, and the winding that transformator and three rectifier tubes are connected is secondary output winding, respectively output+24V ,+15V and-15V three road voltage; + 24V road is auxiliary power supply winding, provides direct current supply for the main control chip for peripheral hardware; Transformator adopts EE40 type ferrite magnetic core and supporting skeleton, adopts outer layer plating paint copper cash and enamel-covered wire coiling primary side winding, secondary output winding and auxiliary power supply winding.
4. a kind of multiple-output electric power according to claim 1 and 2, is characterized in that: in described multiple-channel output rectification filtering unit:
+ 24V output circuit includes the commutation diode, output filter circuit, power supply indication LED lamp and the output plug terminal that are sequentially connected in series; Output filter circuit adopts the combination type filter structure of capacitor and inductor electric capacity;
+ 15V output circuit includes the commutation diode, voltage stabilizing chip, output filter circuit, power supply indication LED lamp and the output plug terminal that are sequentially connected in series; Output filter circuit adopts the combination type filter structure of capacitor and inductor electric capacity;
-15V output circuit includes the commutation diode, voltage stabilizing chip, output filter circuit, power supply indication LED lamp and the output plug terminal that are sequentially connected in series; Output filter circuit adopts capacitor filtering;
+ 5V output circuit includes voltage stabilizing chip, output filter circuit, power supply indication LED lamp in sequential series and exports plug terminal, and it is powered by voltage stabilizing chip by+15V output, and output filter circuit adopts the combination type filter structure of capacitor and inductor electric capacity;
+ 5V ,-15V and+15V output share an output plug terminal.
5. a kind of multiple-output electric power according to claim 3, is characterized in that: control and feedback unit includes control circuit, feedback circuit and protection circuit;
Control circuit adopts UC2845 chip, and output control signal gives the MOSFET drive circuit of main power conversion unit; Input sampling+24V the output voltage of feedback circuit, voltage signal is fed back to control circuit by outfan;
Protection circuit includes current foldback circuit, output overvoltage protection circuit and output short circuit protection circuit; current foldback circuit sampling MOSFET electric current; the output voltage of output overvoltage protection circuit sampling feedback circuit; the output electric current of output short circuit protection circuit sampling feedback circuit, the outfan of protection circuit connects and the signal that aforementioned sample obtains is passed to control circuit.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521068342.3U CN205304588U (en) | 2015-12-21 | 2015-12-21 | Multi -path output power supply |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201521068342.3U CN205304588U (en) | 2015-12-21 | 2015-12-21 | Multi -path output power supply |
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| CN205304588U true CN205304588U (en) | 2016-06-08 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105515351A (en) * | 2015-12-21 | 2016-04-20 | 南京亚派科技股份有限公司 | Multi-output power supply |
| CN107453598A (en) * | 2017-07-31 | 2017-12-08 | 成都普诺科技有限公司 | The programmable power supply output module of fixed cycle output |
| CN108155812A (en) * | 2018-01-16 | 2018-06-12 | 深圳市赛格瑞电子有限公司 | A kind of ac conversion circuit |
-
2015
- 2015-12-21 CN CN201521068342.3U patent/CN205304588U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105515351A (en) * | 2015-12-21 | 2016-04-20 | 南京亚派科技股份有限公司 | Multi-output power supply |
| CN107453598A (en) * | 2017-07-31 | 2017-12-08 | 成都普诺科技有限公司 | The programmable power supply output module of fixed cycle output |
| CN108155812A (en) * | 2018-01-16 | 2018-06-12 | 深圳市赛格瑞电子有限公司 | A kind of ac conversion circuit |
| CN108155812B (en) * | 2018-01-16 | 2024-03-19 | 深圳市赛格瑞电子有限公司 | Alternating current conversion circuit |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Multiple output power supply time sequence control device and method Effective date of registration: 20181115 Granted publication date: 20160608 Pledgee: Bank of China Limited by Share Ltd Nanjing Pukou sub branch Pledgor: NANJING APAITEK TECHNOLOGY CO., LTD. Registration number: 2018320000303 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20210830 Granted publication date: 20160608 Pledgee: Bank of China Limited by Share Ltd. Nanjing Pukou sub branch Pledgor: NANJING APAITEK TECHNOLOGY Co.,Ltd. Registration number: 2018320000303 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right |