CN204316352U - The Switching Power Supply that a kind of new type multipath exports - Google Patents
The Switching Power Supply that a kind of new type multipath exports Download PDFInfo
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- CN204316352U CN204316352U CN201420826786.8U CN201420826786U CN204316352U CN 204316352 U CN204316352 U CN 204316352U CN 201420826786 U CN201420826786 U CN 201420826786U CN 204316352 U CN204316352 U CN 204316352U
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Abstract
The Switching Power Supply that the utility model provides a kind of new type multipath to export, it comprises protection module, rectification module, control module, power supply voltage changing module and output module; Described control module is in parallel with the output of described rectification module, this control module comprises switching power source chip, this switching power source chip is LNK625DG model, its the 4th pin is by one second resistance and the 4th capacitance series, described 4th electric capacity and one first resistance also connect, and the 5th pin of described switching power source chip to be all connected with the negative input of rectification module and the 8th pin also connects zero volts to the 8th pin.This patent has the advantages such as high efficiency, high reliability, low-power consumption, Secure isolation; there is temperature protection, overcurrent protection and short-circuit protection intermittent mode simultaneously; the functions such as automatic recovery; with low cost; portable good; extensibility is good, can be used for the occasion that below 8W has duplicate supply and isolated from power.
Description
Technical field
The utility model belongs to switching power circuit field, especially relates to the Switching Power Supply that a kind of new type multipath exports.
Background technology
In the prior art, the circuit connecting mode of Switching Power Supply is all use the device such as optocoupler or linear feedback, the circuit also more complicated that the higher and spelling group of the cost of such device goes out, and then considerably increase production cost, the adaptability of this type of circuit is little simultaneously, arbitrarily can not increase output according to user's request.
According to the problem of above-mentioned proposition, the existing switching power circuit urgently proposing a kind of applicable many group output and need, and save the use cost of device to greatest extent.
Summary of the invention
Problem to be solved in the utility model proposes the simple and switching power circuit that applicability is strong of a kind of circuit, meets many group output demands simultaneously.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: the Switching Power Supply that a kind of new type multipath exports, and it comprises protection module, rectification module, control module, power supply voltage changing module and output module;
Described rectification module comprises cathode output end and cathode output end, and its cathode output end draws and picks out a voltage input-terminal;
Described control module is in parallel with the output of described rectification module, this control module comprises switching power source chip, this switching power source chip is LNK625DG model, its the 4th pin is by one second resistance and the 4th capacitance series, described 4th electric capacity and one first resistance also connect, 5th pin of described switching power source chip to be all connected with the cathode output end of rectification module and the 8th pin also connects zero volts to the 8th pin, one the 5th electric capacity is connect between second pin of described switching power source chip and its 8th pin, 5th electric capacity is connected with one end of the 3rd resistance with the second pin link of switching power source chip simultaneously, the other end of the 3rd resistance is connected with the positive terminal of one the 6th electrochemical capacitor, the negative pole end of the 6th electrochemical capacitor is connected with the 8th pin of switching power source chip and is connected with one end of one the 6th resistance simultaneously, the described other end of the 6th resistance is connected with the first pin of switching power source chip, the two ends of the 6th resistance also and connect one the 7th electric capacity, be connected by one the 5th resistance with the 7th electric capacity with the 6th resistance one end of switching power source chip first pin junction, described control module also comprises the second diode and the 4th resistance, the negative pole end of second diode of described second diode with the 4th resistor coupled in parallel and after its parallel connection is connected the output of the second diode cathode end after the second diode and the 4th resistor coupled in parallel as control module with the first pin of switching power source chip,
Described power supply voltage changing module comprises transformer and one the 8th electric capacity, described transformer comprises main winding, auxiliary winding and output winding, one end of described main winding is connected with the cathode output end of rectification module, its other end is connected with the 4th pin of switching power source chip, described one end of auxiliary winding is connected with the output of control module, its other end connects zero volts, the waveform that described main winding and auxiliary winding produce is converted to output winding through transformer energy, the two ends of described output winding are connected with output module as the output of power supply voltage changing module, and one end of described main winding is connected by the 8th electric capacity with output winding one end,
Described output module comprises the tenth electrolysis first electric capacity being attempted by the two ends exporting winding, first voltage-stabiliser tube and the ten one the first electric capacity, the described positive terminal of the tenth electrolysis first electric capacity is connected by the 4th inductance with the negative pole end of described first voltage-stabiliser tube, the positive terminal of the tenth electrolysis first electric capacity is also connected in series one the 7th resistance and the 9th electric capacity with the junction exporting winding, described tenth electrolysis first electric capacity two ends also and have one the 8th resistance, 8th resistance is also connected with the negative pole end of one the 4th diode with the positive terminal junction of the tenth electrolysis first electric capacity, the positive terminal of the 4th diode is connected with the one end exporting winding, and the circuit in parallel that the 4th diode is formed with the 7th resistance be connected in series and the 9th electric capacity, the two ends of described the ten one the first electric capacity are as power output terminal.
Further, described transformer comprises the identical output winding of many groups, and the output often organizing described output winding is all connected with a described output module.
Further, described protection module comprises insurance resistance, piezo-resistance and thermistor, and the two ends of described piezo-resistance are connected with one end of insurance resistance and thermistor respectively.
Further, described rectification module comprises with piezo-resistance and the first electric capacity connect and rectifier bridge, two outputs of described rectifier bridge and the first electric capacity also connect, the output of this rectifier bridge and one second electrochemical capacitor also connect, the positive terminal of described second electrochemical capacitor is connected with one end of one first inductance, the negative pole end of this second electrochemical capacitor is connected with one end of the second inductance, the other end of this second inductance and the other end of described first inductance are by one the 3rd electrochemical capacitor and connect, the positive terminal of the 3rd electrochemical capacitor is connected with the first inductance and draws and picks out voltage input end, the negative pole end of described 3rd electrochemical capacitor is connected with the second inductance.
Further, described rectifier bridge adopts MB10S model.
Further, the positive terminal of described 3rd electrochemical capacitor is as the cathode output end of rectification module, the negative pole end of the 3rd electrochemical capacitor is as the cathode output end of rectification module, and the positive terminal of the 3rd electrochemical capacitor is connected with one end of the 4th electric capacity, the negative pole end of described 3rd electrochemical capacitor is connected with the 5th pin of switching power source chip.
The advantage that the utility model has and good effect are: this switching power circuit can meet the input requirements of Width funtion; and be AC/DC; there is the advantages such as high efficiency, high reliability, low-power consumption, Secure isolation; there is temperature protection, overcurrent protection and short-circuit protection intermittent mode simultaneously; the functions such as automatic recovery; with low cost; portable good; extensibility is good; the occasion that below 8W has duplicate supply and isolated from power can be used for; particularly can be widely used in communication module to power, there is good isolation and antijamming capability.
Accompanying drawing explanation
Fig. 1 is the circuit theory diagrams of the present embodiment;
Fig. 2 is the protection module circuit diagram of the present embodiment;
Fig. 3 is the rectification module circuit diagram of the present embodiment;
Fig. 4 is the control module circuit diagram of the present embodiment;
Fig. 5 is the supply voltage module circuit diagram of the present embodiment;
Fig. 6 is the output module circuit diagram of the present embodiment.
In figure:
1, protection module 2, rectification module 3, control module
4, power supply voltage changing module 5, output module
Embodiment
Below in conjunction with accompanying drawing, specific embodiment of the utility model is elaborated.
As shown in Figure 1, the Switching Power Supply that a kind of new type multipath exports, it comprises protection module 1, rectification module 2, control module 3, power supply voltage changing module 4 and output module 5;
Described protection module 1 comprises insurance resistance RT2, piezo-resistance RV1 and thermistor RT1, the two ends of described piezo-resistance RV1 are connected with one end of insurance resistance RT2 and thermistor RT1 respectively, and insure L terminal and N terminal that resistance RT2 and the non-link of thermistor RT1 be connected with other circuit modules respectively as this circuit;
Described rectification module 2 comprises with piezo-resistance RV1 and the first electric capacity C1 connect and rectifier bridge B1, described rectifier bridge B1 adopts MB10S model, two outputs of described rectifier bridge B1 and the first electric capacity C1 also connect, the output of this rectifier bridge B1 and one second electrochemical capacitor C2 also connect, the positive terminal of described second electrochemical capacitor C2 is connected with one end of one first inductance L 1, the negative pole end of this second electrochemical capacitor C2 is connected with one end of the second inductance L 2, the other end of this second inductance L 2 and the other end of described first inductance L 1 are by one the 3rd electrochemical capacitor C3 and connect, the positive terminal of the 3rd electrochemical capacitor C3 is connected with the first inductance L 1 and draws and picks out voltage input-terminal, be DC+ as shown in Figure 1, the negative pole end of described 3rd electrochemical capacitor C3 is connected with the second inductance L 2, the positive terminal of described 3rd electrochemical capacitor C3 is as the cathode output end L+ of rectification module 2, the negative pole end of the 3rd electrochemical capacitor C3 is as the cathode output end L-of rectification module 2, and the positive terminal of the 3rd electrochemical capacitor C3 is connected with one end of the 4th electric capacity C4, the negative pole end of described 3rd electrochemical capacitor C3 is connected with the 5th pin of switching power source chip U1,
Described control module 3 is in parallel with the output of described rectification module 2, this control module 3 comprises switching power source chip U1, this switching power source chip U1 is LNK625DG model, its the 4th pin is connected in series with the 4th electric capacity C4 by one second resistance R2, described 4th electric capacity C4 and one first resistance R1 also connects, 5th pin of described switching power source chip U1 to be all connected with the cathode output end L-of rectification module 2 and the 8th pin also connects zero volts to the 8th pin, meet one the 5th electric capacity C5 between second pin of described switching power source chip U1 and its 8th pin, 5th electric capacity C5 is connected with one end of the 3rd resistance R3 with the second pin link of switching power source chip U1 simultaneously, the other end of the 3rd resistance R3 is connected with the positive terminal of one the 6th electrochemical capacitor C6, the negative pole end of the 6th electrochemical capacitor C6 is connected with the 8th pin of switching power source chip U1 and is connected with one end of one the 6th resistance R6 simultaneously, the described other end of the 6th resistance R6 is connected with first pin of switching power source chip U1, the two ends of the 6th resistance R6 also and meet one the 7th electric capacity C7, be connected by one the 5th resistance R5 with the 7th electric capacity C7 with the 6th resistance R6 one end of switching power source chip U1 first pin junction, described control module 3 also comprises the second diode D2 and the 4th resistance R4, described second diode D2 is in parallel with the 4th resistance R4 and the negative pole end of the second diode D2 after its parallel connection is connected the output S of the second diode D2 positive terminal after the second diode D2 and the 4th resistance R4 parallel connection as control module 3 with first pin of switching power source chip U1,
Described power supply voltage changing module 4 comprises transformer T1 and the 8th electric capacity C8, described transformer T1 comprises main winding N1, auxiliary winding N3 and output winding N2, one end (the 5th pin) of described main winding N1 is connected with the cathode output end L+ of rectification module 2, its other end (the 4th pin) is connected with the 4th pin of switching power source chip U1, one end (the 2nd pin) of described auxiliary winding N3 is connected with the output S of control module 3, its other end (the 1st pin) connects zero volts, the waveform that described main winding N1 and auxiliary winding N3 produces extremely exports winding N2 through transformer T1 power conversion, be main winding N1 and auxiliary winding the N3 voltage proportional produced and the voltage exporting winding N2, the two ends of described output winding N2 are connected with output module 5 as the output of power supply voltage changing module 4, and one end of described main winding N1 (the 5th pin) is connected by the 8th electric capacity C8 with output winding N2 one end (the 7th pin),
Described output module 5 comprises the tenth electrolysis first electric capacity C10 being attempted by the two ends exporting winding N2, first voltage-stabiliser tube ZD1 and the ten one the first electric capacity C11, the positive terminal of described tenth electrolysis first electric capacity C10 is connected by the 4th inductance L 4 with the negative pole end of described first voltage-stabiliser tube ZD1, the positive terminal of the tenth electrolysis first electric capacity C10 is also connected in series one the 7th resistance R7 and the 9th electric capacity C9 with the junction exporting winding N2, described tenth electrolysis first electric capacity C10 two ends also and have one the 8th resistance R8, 8th resistance R8 is also connected with the negative pole end of one the 4th diode D4 with the positive terminal junction of the tenth electrolysis first electric capacity C10, the positive terminal of the 4th diode D4 is connected with the one end exporting winding N2, and the circuit in parallel that the 4th diode D4 is formed with the 7th resistance R7 be connected in series and the 9th electric capacity C9, the two ends of described the ten one the first electric capacity C11 are as power output terminal, namely 5V lead-out terminal and earth terminal is expressed as in figure,
Described transformer T1 comprises the identical output winding N2 of many groups, and all described with one output module 5 of output often organizing described output winding N2 is connected, and is illustrated in figure 1 example, and transformer T1 comprises two groups and exports winding N2.
Output voltage in the present embodiment can adjust the specification of each device as required at any time, thus exports different voltage.
Above embodiment of the present utility model has been described in detail, but described content being only preferred embodiment of the present utility model, can not being considered to for limiting practical range of the present utility model.All equalizations done according to the utility model scope change and improve, and all should still belong within this patent covering scope.
Claims (6)
1. a Switching Power Supply for new type multipath output, is characterized in that: comprise protection module (1), rectification module (2), control module (3), power supply voltage changing module (4) and output module (5);
Described rectification module (2) comprises cathode output end (L+) and cathode output end (L-), and its cathode output end (L+) draws and picks out a voltage input-terminal;
Described control module (3) is in parallel with the output of described rectification module (2), this control module (3) comprises switching power source chip (U1), this switching power source chip (U1) is LNK625DG model, its the 4th pin is connected in series with the 4th electric capacity (C4) by one second resistance (R2), described 4th electric capacity (C4) and one first resistance (R1) also connect, 5th pin of described switching power source chip (U1) to be all connected with the cathode output end (L-) of rectification module (2) and the 8th pin also connects zero volts to the 8th pin, connect one the 5th electric capacity (C5) between second pin of described switching power source chip (U1) and its 8th pin, 5th electric capacity (C5) is connected with one end of the 3rd resistance (R3) with the second pin link of switching power source chip (U1) simultaneously, the other end of the 3rd resistance (R3) is connected with the positive terminal of one the 6th electrochemical capacitor (C6), the negative pole end of the 6th electrochemical capacitor (C6) is connected with the 8th pin of switching power source chip (U1) and is connected with one end of one the 6th resistance (R6) simultaneously, the other end of described 6th resistance (R6) is connected with the first pin of switching power source chip (U1), the two ends of the 6th resistance (R6) also and connect one the 7th electric capacity (C7), be connected by one the 5th resistance (R5) with the 7th electric capacity (C7) with the 6th resistance (R6) one end of switching power source chip (U1) first pin junction, described control module (3) also comprises the second diode (D2) and the 4th resistance (R4), described second diode (D2) and the negative pole end of second diode (D2) its parallel connection after in parallel with the 4th resistance (R4) is connected with the first pin of switching power source chip (U1), the second diode (D2) positive terminal after second diode (D2) and the 4th resistance (R4) parallel connection is as the output of control module (3),
Described power supply voltage changing module (4) comprises transformer (T1) and one the 8th electric capacity (C8), described transformer (T1) comprises main winding (N1), auxiliary winding (N3) and output winding (N2), one end of described main winding (N1) is connected with the cathode output end (L+) of rectification module (2), its other end is connected with the 4th pin of switching power source chip (U1), one end of described auxiliary winding (N3) is connected with the output (S) of control module (3), its other end connects zero volts, the waveform that described main winding (N1) and auxiliary winding (N3) produce through transformer (T1) power conversion to exporting winding (N2), the two ends of described output winding (N2) are connected with output module (5) as the output of power supply voltage changing module (4), and one end of described main winding (N1) is connected by the 8th electric capacity (C8) with output winding (N2) one end,
Described output module (5) comprises the tenth electrochemical capacitor (C10) being attempted by the two ends exporting winding (N2), first voltage-stabiliser tube (ZD1) and the 11 electric capacity (C11), the positive terminal of described tenth electrochemical capacitor (C10) is connected by the 4th inductance (L4) with the negative pole end of described first voltage-stabiliser tube (ZD1), the positive terminal of the tenth electrochemical capacitor (C10) is also connected in series one the 7th resistance (R7) and the 9th electric capacity (C9) with the junction exporting winding (N2), described tenth electrochemical capacitor (C10) two ends also and have one the 8th resistance (R8), 8th resistance (R8) is also connected with the negative pole end of one the 4th diode (D4) with the positive terminal junction of the tenth electrochemical capacitor (C10), the positive terminal of the 4th diode (D4) is connected with the one end exporting winding (N2), and the circuit in parallel that the 4th diode (D4) is formed with the 7th resistance (R7) be connected in series and the 9th electric capacity (C9), the two ends of described 11 electric capacity (C11) are as power output terminal.
2. the Switching Power Supply of a kind of new type multipath output according to claim 1, it is characterized in that: described transformer (T1) comprises the identical output winding (N2) of many groups, and the output often organizing described output winding (N2) is all connected with a described output module (5).
3. the Switching Power Supply of a kind of new type multipath output according to claim 1 and 2; it is characterized in that: described protection module (1) comprises insurance resistance (RT2), piezo-resistance (RV1) and thermistor (RT1), the two ends of described piezo-resistance (RV1) are connected with one end of insurance resistance (RT2) and thermistor (RT1) respectively.
4. the Switching Power Supply of a kind of new type multipath output according to claim 3, it is characterized in that: described rectification module (2) comprises with piezo-resistance (RV1) and the first electric capacity (C1) connect and rectifier bridge (B1), two outputs of described rectifier bridge (B1) and the first electric capacity (C1) also connect, the output of this rectifier bridge (B1) and one second electrochemical capacitor (C2) also connect, the positive terminal of described second electrochemical capacitor (C2) is connected with one end of one first inductance (L1), the negative pole end of this second electrochemical capacitor (C2) is connected with one end of the second inductance (L2), the other end of this second inductance (L2) and the other end of described first inductance (L1) pass through one the 3rd electrochemical capacitor (C3) and connect, the positive terminal of the 3rd electrochemical capacitor (C3) is connected with the first inductance (L1) and draws and picks out voltage input-terminal, the negative pole end of described 3rd electrochemical capacitor (C3) is connected with the second inductance (L2).
5. the Switching Power Supply of a kind of new type multipath output according to claim 4, is characterized in that: described rectifier bridge (B1) adopts MB10S model.
6. the Switching Power Supply of a kind of new type multipath output according to claim 4, it is characterized in that: the positive terminal of described 3rd electrochemical capacitor (C3) is as the cathode output end (L+) of rectification module (2), the negative pole end of the 3rd electrochemical capacitor (C3) is as the cathode output end (L-) of rectification module (2), and the positive terminal of the 3rd electrochemical capacitor (C3) is connected with one end of the 4th electric capacity (C4), the described negative pole end of the 3rd electrochemical capacitor (C3) is connected with the 5th pin of switching power source chip (U1).
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| CN201420826786.8U CN204316352U (en) | 2014-12-22 | 2014-12-22 | The Switching Power Supply that a kind of new type multipath exports |
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| CN201420826786.8U CN204316352U (en) | 2014-12-22 | 2014-12-22 | The Switching Power Supply that a kind of new type multipath exports |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108365765A (en) * | 2018-03-30 | 2018-08-03 | 上海理工大学 | A kind of multiple-channel output single-end flyback switching power supply |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108365765A (en) * | 2018-03-30 | 2018-08-03 | 上海理工大学 | A kind of multiple-channel output single-end flyback switching power supply |
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