CN103296895A - DC-DC voltage switching circuit - Google Patents
DC-DC voltage switching circuit Download PDFInfo
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- CN103296895A CN103296895A CN2013102175858A CN201310217585A CN103296895A CN 103296895 A CN103296895 A CN 103296895A CN 2013102175858 A CN2013102175858 A CN 2013102175858A CN 201310217585 A CN201310217585 A CN 201310217585A CN 103296895 A CN103296895 A CN 103296895A
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Abstract
The invention discloses a DC-DC voltage switching circuit comprising a recovery diode D602, a glass-packaged development diode D603, a glass-packaged development diode D604, a glass-packaged development diode D605, a glass-packaged development diode D606, a transformer B601, a capacitor C10, a capacitor C11, a capacitor C12, an electrolytic capacitor C603, an electrolytic capacitor C605, a resistor R12, a 78L05 three-terminal voltage-stabilized source regulator T601, an RFU110 field-effect transistor M601. The DC-DC voltage switching circuit is low in power consumption, high in precision and applicable to systems requiring high precision.
Description
Technical field
The invention belongs to power supply power supply technique field, relate to a kind of DC-DC DC voltage converting circuit that is applied to communication apparatus etc.
Background technology
The DC-DC DC voltage converting circuit is the circuit topology that a kind of direct voltage is converted to another kind of direct voltage.What the words of general small-power DC voltage converting circuit were used is the Buck(buck) and Boost(boost) pattern.High-power just the employing instead swashed, half-bridge, recommended or the circuit topology of full-bridge.Divide the difference that isolation and non-isolation are arranged according to structure, electrical isolation is carried out in will being imported with output by transformer of just isolating, and energy is delivered to output by magnetic energy.But not directly changing by switching tube exactly of isolating.For example a DC-DC DC voltage converting circuit the simplest is exactly onboard charger, the voltage of storage battery is generally DC10-14.5V on the car, Buck circuit conversion with a DC-DC is the voltage of 5V, can give cell-phone charging, and if can be converted to about 19V and can charge to notebook computer with the Boost circuit.The used circuit of this DC-DC DC voltage converting circuit is switching mode, is a Switching Power Supply.Its efficient is very high, and is energy-conservation.Generally can reach about 90%.So can reach extensive use.If the use linear circuit, conversion efficiency can be very low, loses most energy.At present usefulness seldom.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, a kind of DC-DC DC voltage converting circuit is provided.
The present invention is by the following technical solutions:
The DC-DC DC voltage converting circuit comprises recovery diode D602, glass packaging exploitation diode D603, glass packaging exploitation diode D604, glass packaging exploitation diode D605, glass packaging exploitation diode D606, transformer B601, capacitor C 10, capacitor C 11, capacitor C 12, electrochemical capacitor C603, electrochemical capacitor C605, resistance R 12,78L05 three-terminal voltage-stabilizing feed regulator isolator T601, IRFU110 field effect transistor M601.Recovery diode D602 plus earth, negative electrode connects transformer B601 primary side one end, input direct voltage VCC connects an end of capacitor C 10, the primary side other end of transformer B601 respectively, the primary side that the end of the other end connecting resistance R12 of capacitor C 10, the other end of resistance R 12 meet IRFU110 field effect transistor M601 drain electrode, transformer B601 respectively is an end again; IRFU110 field effect transistor M601 drain-source ground connection, grid connects input frequency signal.
Glass packaging exploitation diode D603 anode connects glass packaging exploitation diode D605 negative electrode respectively, connects secondary side one end of transformer B601, and glass packaging exploitation diode D604 anode connects glass packaging exploitation diode D606 negative electrode respectively, connects the secondary side other end of transformer B601; 3 pin of glass packaging exploitation diode D603 negative electrode, glass packaging exploitation diode D604 negative electrode, electrochemical capacitor C603 positive pole, capacitor C 11 1 termination 78L05 three-terminal voltage-stabilizing feed regulator isolator T601; The 2 pin ground connection of glass packaging exploitation diode D605 anode, glass packaging exploitation diode D606 anode, electrochemical capacitor C603 negative pole, capacitor C 11 other ends, 78L05 three-terminal voltage-stabilizing feed regulator isolator T601; 1 pin of 78L05 three-terminal voltage-stabilizing feed regulator isolator T601 connects the positive pole of electrochemical capacitor C605, an end of capacitor C 12 respectively, and as dc voltage output end, the other end ground connection of the negative pole of electrochemical capacitor C605, capacitor C 12.
Beneficial effect of the present invention: this circuit power consumption is low, and the precision height is applicable in the high system of claimed accuracy.
Description of drawings
Fig. 1 is circuit theory diagrams of the present invention.
Embodiment
The present invention is further illustrated below in conjunction with accompanying drawing.
As shown in Figure 1, the present invention includes recovery diode D602, glass packaging exploitation diode D603, glass packaging exploitation diode D604, glass packaging exploitation diode D605, glass packaging exploitation diode D606, transformer B601, capacitor C 10, capacitor C 11, capacitor C 12, electrochemical capacitor C603, electrochemical capacitor C605, resistance R 12,78L05 three-terminal voltage-stabilizing feed regulator isolator T601, IRFU110 field effect transistor M601; Recovery diode D602 is along conducting direction one end ground connection, one termination transformer B601 primary side, input direct voltage VCC receives the primary side of transformer B601, also receive the primary side of transformer B601 behind the whole VCC in parallel of capacitor C 10 connecting resistance R12, IRFU110 field effect transistor M601 drain electrode connecting resistance R12 is by the side of transformer B601, source ground, grid connects input frequency signal, glass packaging exploitation diode D603, glass packaging exploitation diode D604, glass packaging exploitation diode D605 connects to form the secondary side that the bridge rectifier left side is connected transformer B601 with glass packaging exploitation diode D606, the right be connected in parallel capacitor C 12 and electrochemical capacitor C603, the Vin mouth that afterwards positive ends is connected 78L05 three-terminal voltage-stabilizing feed regulator isolator T601, the GND mouth that the negative polarity end is connected 78L05 three-terminal voltage-stabilizing feed regulator isolator T601, to form output filter circuit after capacitor C 12 and the electrochemical capacitor C605 parallel connection at last, positive ends is connected the Vout mouth of 78L05 three-terminal voltage-stabilizing feed regulator isolator T601, and the negative polarity end connects the GND mouth of 78L05 three-terminal voltage-stabilizing feed regulator isolator T601.Recovery diode D602 is a port that cuts off transformer B601 one side, capacitor C 10 and resistance R 12 play filtering and the metering function to the input direct current signal, IRFU110 field effect transistor M601 regenerates the AC signal that needs with direct current signal after receiving frequency signal, by transformer B601 with the ratio of needs with the AC signal convergent-divergent, played the effect of electrical isolation simultaneously, the voltage signal of the secondary side of transformer B601 output afterwards is through developing diode D603 by glass packaging, glass packaging exploitation diode D604, after connecting to form bridge rectifier, glass packaging exploitation diode D605 and glass packaging exploitation diode D606 be rectified into direct current signal, be connected to 78L05 three-terminal voltage-stabilizing feed regulator isolator T601 behind the filter circuit that this direct current signal is formed by electrochemical capacitor C603 and capacitor C 11 again, afterwards Shu Chu precision higher+the 5V direct current signal by with the filter action of the same filter circuit of being formed by electrochemical capacitor C605 and capacitor C 12 before after finally the required precision of generation system very high+the 5V d. c. voltage signal.
Claims (1)
1.DC-DC DC voltage converting circuit, comprise recovery diode D602, glass packaging exploitation diode D603, glass packaging exploitation diode D604, glass packaging exploitation diode D605, glass packaging exploitation diode D606, transformer B601, capacitor C 10, capacitor C 11, capacitor C 12, electrochemical capacitor C603, electrochemical capacitor C605, resistance R 12,78L05 three-terminal voltage-stabilizing feed regulator isolator T601, IRFU110 field effect transistor M601, it is characterized in that: recovery diode D602 plus earth, negative electrode connects transformer B601 primary side one end, input direct voltage VCC connects an end of capacitor C 10 respectively, the primary side other end of transformer B601, the end of the other end connecting resistance R12 of capacitor C 10, the other end of resistance R 12 connect IRFU110 field effect transistor M601 drain electrode respectively, the primary side of transformer B601 is an end again; IRFU110 field effect transistor M601 drain-source ground connection, grid connects input frequency signal;
Glass packaging exploitation diode D603 anode connects glass packaging exploitation diode D605 negative electrode respectively, connects secondary side one end of transformer B601, and glass packaging exploitation diode D604 anode connects glass packaging exploitation diode D606 negative electrode respectively, connects the secondary side other end of transformer B601; 3 pin of glass packaging exploitation diode D603 negative electrode, glass packaging exploitation diode D604 negative electrode, electrochemical capacitor C603 positive pole, capacitor C 11 1 termination 78L05 three-terminal voltage-stabilizing feed regulator isolator T601; The 2 pin ground connection of glass packaging exploitation diode D605 anode, glass packaging exploitation diode D606 anode, electrochemical capacitor C603 negative pole, capacitor C 11 other ends, 78L05 three-terminal voltage-stabilizing feed regulator isolator T601; 1 pin of 78L05 three-terminal voltage-stabilizing feed regulator isolator T601 connects the positive pole of electrochemical capacitor C605, an end of capacitor C 12 respectively, and as dc voltage output end, the other end ground connection of the negative pole of electrochemical capacitor C605, capacitor C 12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102175858A CN103296895A (en) | 2013-06-03 | 2013-06-03 | DC-DC voltage switching circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102175858A CN103296895A (en) | 2013-06-03 | 2013-06-03 | DC-DC voltage switching circuit |
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| CN103296895A true CN103296895A (en) | 2013-09-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013102175858A Pending CN103296895A (en) | 2013-06-03 | 2013-06-03 | DC-DC voltage switching circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105702525A (en) * | 2016-04-01 | 2016-06-22 | 宁波科曼电子科技有限公司 | Dual-disconnection switch controller |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2512184Y (en) * | 2001-12-28 | 2002-09-18 | 上海嘉宁电视器材有限公司 | Radio-frequency automatic control power supplier |
| CN101567637A (en) * | 2009-05-31 | 2009-10-28 | 陈清尧 | Design of singlechip-controlled switch power |
| CN101847934A (en) * | 2010-05-07 | 2010-09-29 | Bcd半导体制造有限公司 | A kind of Switching Power Supply |
| CN202231617U (en) * | 2011-09-29 | 2012-05-23 | 广州三晶电气有限公司 | Insulated gate bipolar transistor driving power source |
| US20130051090A1 (en) * | 2011-03-10 | 2013-02-28 | Hangzhou Silan Microelectronics Co., Ltd. | Current reference generating circuit and a constant current switch mode power supply control circuit and method thereof |
| CN203352446U (en) * | 2013-06-03 | 2013-12-18 | 杭州电子科技大学 | DC-DC voltage conversion circuit |
-
2013
- 2013-06-03 CN CN2013102175858A patent/CN103296895A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2512184Y (en) * | 2001-12-28 | 2002-09-18 | 上海嘉宁电视器材有限公司 | Radio-frequency automatic control power supplier |
| CN101567637A (en) * | 2009-05-31 | 2009-10-28 | 陈清尧 | Design of singlechip-controlled switch power |
| CN101847934A (en) * | 2010-05-07 | 2010-09-29 | Bcd半导体制造有限公司 | A kind of Switching Power Supply |
| US20130051090A1 (en) * | 2011-03-10 | 2013-02-28 | Hangzhou Silan Microelectronics Co., Ltd. | Current reference generating circuit and a constant current switch mode power supply control circuit and method thereof |
| CN202231617U (en) * | 2011-09-29 | 2012-05-23 | 广州三晶电气有限公司 | Insulated gate bipolar transistor driving power source |
| CN203352446U (en) * | 2013-06-03 | 2013-12-18 | 杭州电子科技大学 | DC-DC voltage conversion circuit |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105702525A (en) * | 2016-04-01 | 2016-06-22 | 宁波科曼电子科技有限公司 | Dual-disconnection switch controller |
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Application publication date: 20130911 |