CN201966805U - Switching power supply circuit - Google Patents
Switching power supply circuit Download PDFInfo
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- CN201966805U CN201966805U CN2010206821201U CN201020682120U CN201966805U CN 201966805 U CN201966805 U CN 201966805U CN 2010206821201 U CN2010206821201 U CN 2010206821201U CN 201020682120 U CN201020682120 U CN 201020682120U CN 201966805 U CN201966805 U CN 201966805U
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- negative pole
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- switching power
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Abstract
The utility model relates to a switching power supply circuit, which comprises a fuse (F1), inductors (L1 and L2), capacitors (CAP2-CAP9 and C4-C11), a chip (U3), an optocoupler (U4), diodes (D1, D3, D4, D5 and D6), a three-terminal adjustable shunting reference source (Q3), resistors (R6-R11) and a transformer (E1). A direct voltage reduction function is achieved by the switching power supply circuit. The switching power supply circuit has the advantages of low power, small size, high efficiency and low cost; the requirements of the capacitors are lowered by adopting the method of the parallel connection of the capacitors, and the influence of using the capacitors with slightly high equivalent series resistance (ESR) values on the performance of the whole system is not high. Moreover, when part of capacitors is out of order, the circuit still can normally work, so that a catastrophic failure cannot happen.
Description
Technical field
The utility model relates to power technique fields, particularly relates to a kind of switching power circuit.
Background technology
Switching power circuit is one of important link in power technology, and the operational reliability of switching power circuit and quality have very important significance for improving the electricity consumption q﹠r.Because the Switching Power Supply configuration is complicated, wherein the damage of several elements just may cause scrapping of whole Switching Power Supply, and serious meeting influences the useful life of power consumption equipment, causes huge waste.
The utility model content
The purpose of this utility model is to avoid weak point of the prior art and a kind of switching power circuit is provided.
The purpose of this utility model realizes by following technical measures.
A kind of switching power circuit comprises fuse F1, inductance L 1, L2, capacitor C AP2-CAP9, C4-C11, chip U3, light lotus root U4, diode D1, D3, D4, D5, D6, three ends are adjustable shunting a reference source Q3, resistance R 6-R11 and transformer E1; F1 is connected between the end and input voltage PVCC of L1, the end of the positive pole of another termination CAP6 of L1, D5 negative pole, R6, the end of C6 and transformer E1 1 pin of primary coil, the negative pole of CAP6 connects the negative pole of an end, D5 positive pole and CAP8 of 1,2,3,6,7 and 8 pins, the C10 of U3; Another termination of R6 C6 other end and D6 negative pole, D6 positive pole connect 3 pins of the primary coil of 5 pin of U3 and E1, and 4 pin of U3 connect the other end of C10, the end of R9 and 3 pin of U4, the positive pole of another termination CAP8 of R9; 5 pin of the secondary coil of E1 connect the end of C7, the negative pole of CAP7, the end of C8, the negative pole of CAP9 and the end of C9, the negative pole of another termination D4 of C7, the positive pole of D4 connects 6 pin of the secondary coil of E1, the positive pole of CAP7 connects the negative pole of D3, the other end of C8 and the end of L3, the negative pole of D3 connects 10 pin of the secondary coil of E1, the positive pole of another termination CAP9 of L3, the other end of C9 and the second output voltage 2VCC; 8 pin of the secondary coil of E1 connect the positive pole of D1, the negative pole of D1 connects the positive pole of CAP2, the end of C4, the positive pole of CAP3, the end of L2 and the end of R10, the negative pole of the negative pole of CAP2, the other end of C4 and CAP3 connects the negative pole of CAP4, the end of C5 and the negative pole of CAP5, the positive pole of the positive pole of another termination CAP4 of L2, the other end of C5, CAP5, the end of the second output voltage 1VCC, R7 and the end of R8; 1 pin of U4 connects the other end of R7, and 2 pin of U4 connect the other end of R8, the end of C11 and the negative pole of Q3, the adjustable side of another termination Q3 of C11, the other end of R10 and the end of R11, and the positive pole of Q3 connects the other end and the ground connection of R11.
U3 is TOP412.
U4 is TLP281_1.
Q3 is TL431A.
Switching power circuit of the present utility model has been realized the direct voltage buck functionality, and it is little to have power, and volume is little, the high and low advantage of cost of efficient.The TOP414 switching frequency is fixed as 120KHZ, and input range is wide, can realize 18V～90V input, and power reaches as high as 21W; Adjustable Output Voltage, Adjustable Output Voltage (regulating R10, R11 ratio).The 1VCC output, adopt the method for electric capacity parallel connection to reduce the requirement of electric capacity, can use the high a little capacitor of ESR value and little the whole system performance impact, and when the partition capacitance device is out of order, circuit still can operate as normal, is unlikely to occur bust.The 2VCC output end voltage is 16V, but the power supply machine drive circuit uses.
Description of drawings
Utilize accompanying drawing that the utility model is described further, but the content in the accompanying drawing does not constitute any restriction of the present utility model.
Fig. 1 is the circuit diagram of an embodiment of a kind of switching power circuit of the present utility model.
Embodiment
The utility model is described in further detail with the following Examples:
An embodiment of a kind of switching power circuit of the present utility model comprises fuse F1, inductance L 1, L2, capacitor C AP2-CAP9, C4-C11, chip U3, light lotus root U4, diode D1, D3, D4, D5, D6, three ends are adjustable shunting a reference source Q3, resistance R 6-R11 and transformer E1 as shown in Figure 1; F1 is connected between the end and input voltage PVCC of L1, the end of the positive pole of another termination CAP6 of L1, D5 negative pole, R6, the end of C6 and transformer E1 1 pin of primary coil, the negative pole of CAP6 connects the negative pole of an end, D5 positive pole and CAP8 of 1,2,3,6,7 and 8 pins, the C10 of U3; Another termination of R6 C6 other end and D6 negative pole, D6 positive pole connect 3 pins of the primary coil of 5 pin of U3 and E1, and 4 pin of U3 connect the other end of C10, the end of R9 and 3 pin of U4, the positive pole of another termination CAP8 of R9; 5 pin of the secondary coil of E1 connect the end of C7, the negative pole of CAP7, the end of C8, the negative pole of CAP9 and the end of C9, the negative pole of another termination D4 of C7, the positive pole of D4 connects 6 pin of the secondary coil of E1, the positive pole of CAP7 connects the negative pole of D3, the other end of C8 and the end of L3, the negative pole of D3 connects 10 pin of the secondary coil of E1, the positive pole of another termination CAP9 of L3, the other end of C9 and the second output voltage 2VCC; 8 pin of the secondary coil of E1 connect the positive pole of D1, the negative pole of D1 connects the positive pole of CAP2, the end of C4, the positive pole of CAP3, the end of L2 and the end of R10, the negative pole of the negative pole of CAP2, the other end of C4 and CAP3 connects the negative pole of CAP4, the end of C5 and the negative pole of CAP5, the positive pole of the positive pole of another termination CAP4 of L2, the other end of C5, CAP5, the end of the second output voltage 1VCC, R7 and the end of R8; 1 pin of U4 connects the other end of R7, and 2 pin of U4 connect the other end of R8, the end of C11 and the negative pole of Q3, the adjustable side of another termination Q3 of C11, the other end of R10 and the end of R11, and the positive pole of Q3 connects the other end and the ground connection of R11.
U3 is TOP412.
U4 is TLP281_1.
Q3 is TL431A.
Should be noted that at last; above embodiment only is used to the technical solution of the utility model is described but not to the restriction of the utility model protection range; although the utility model has been done detailed description with reference to preferred embodiment; those of ordinary skill in the art is to be understood that; can make amendment or be equal to replacement the technical solution of the utility model, and not break away from the essence and the scope of technical solutions of the utility model.
Claims (4)
1. switching power circuit is characterized in that: comprise fuse F1, inductance L 1, L2, capacitor C AP2-CAP9, C4-C11, chip U3, light lotus root U4, diode D1, D3, D4, D5, D6, three ends are adjustable shunting a reference source Q3, resistance R 6-R11 and transformer E1; F1 is connected between the end and input voltage PVCC of L1, the end of the positive pole of another termination CAP6 of L1, D5 negative pole, R6, the end of C6 and transformer E1 1 pin of primary coil, the negative pole of CAP6 connects the negative pole of an end, D5 positive pole and CAP8 of 1,2,3,6,7 and 8 pins, the C10 of U3; Another termination of R6 C6 other end and D6 negative pole, D6 positive pole connect 3 pins of the primary coil of 5 pin of U3 and E1, and 4 pin of U3 connect the other end of C10, the end of R9 and 3 pin of U4, the positive pole of another termination CAP8 of R9; 5 pin of the secondary coil of E1 connect the end of C7, the negative pole of CAP7, the end of C8, the negative pole of CAP9 and the end of C9, the negative pole of another termination D4 of C7, the positive pole of D4 connects 6 pin of the secondary coil of E1, the positive pole of CAP7 connects the negative pole of D3, the other end of C8 and the end of L3, the negative pole of D3 connects 10 pin of the secondary coil of E1, the positive pole of another termination CAP9 of L3, the other end of C9 and the second output voltage 2VCC; 8 pin of the secondary coil of E1 connect the positive pole of D1, the negative pole of D1 connects the positive pole of CAP2, the end of C4, the positive pole of CAP3, the end of L2 and the end of R10, the negative pole of the negative pole of CAP2, the other end of C4 and CAP3 connects the negative pole of CAP4, the end of C5 and the negative pole of CAP5, the positive pole of the positive pole of another termination CAP4 of L2, the other end of C5, CAP5, the end of the second output voltage 1VCC, R7 and the end of R8; 1 pin of U4 connects the other end of R7, and 2 pin of U4 connect the other end of R8, the end of C11 and the negative pole of Q3, the adjustable side of another termination Q3 of C11, the other end of R10 and the end of R11, and the positive pole of Q3 connects the other end and the ground connection of R11.
2. switching power circuit according to claim 1 is characterized in that: U3 is TOP412.
3. switching power circuit according to claim 1 is characterized in that: U4 is TLP281_1.
4. switching power circuit according to claim 1 is characterized in that: Q3 is TL431A.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206821201U CN201966805U (en) | 2010-12-27 | 2010-12-27 | Switching power supply circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206821201U CN201966805U (en) | 2010-12-27 | 2010-12-27 | Switching power supply circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201966805U true CN201966805U (en) | 2011-09-07 |
Family
ID=44529357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206821201U Expired - Fee Related CN201966805U (en) | 2010-12-27 | 2010-12-27 | Switching power supply circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201966805U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102005929A (en) * | 2010-12-27 | 2011-04-06 | 东莞易步机器人有限公司 | Switch power supply circuit |
| CN102664528A (en) * | 2012-04-23 | 2012-09-12 | 承德承信自动化工程有限公司 | Switch power supply |
-
2010
- 2010-12-27 CN CN2010206821201U patent/CN201966805U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102005929A (en) * | 2010-12-27 | 2011-04-06 | 东莞易步机器人有限公司 | Switch power supply circuit |
| CN102005929B (en) * | 2010-12-27 | 2012-12-12 | 东莞乐感智能科技有限公司 | Switch power supply circuit |
| CN102664528A (en) * | 2012-04-23 | 2012-09-12 | 承德承信自动化工程有限公司 | Switch power supply |
| CN102664528B (en) * | 2012-04-23 | 2016-12-14 | 承德承信自动化工程有限公司 | A kind of Switching Power Supply |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: DONGGUAN LEGAN INTELLIGENT TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: DONGGUAN ROBSTEP ROBOT CO., LTD. Effective date: 20120308 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20120308 Address after: 523808 room 1, R & D building, nine hi tech Industrial Zone, Songshan Lake hi tech Industrial Development Zone, Guangdong, Dongguan, 114 Patentee after: Dongguan Yibu Robot Co., Ltd. Address before: 523808, room 1, R & D building, Songshan Road, nine, science and Technology Industrial Park, Songshan, Dongguan, Guangdong 110, China Patentee before: Dongguan Robstep Robot Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110907 Termination date: 20171227 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |