CN103248233A - Method for realizing power isolation - Google Patents
Method for realizing power isolation Download PDFInfo
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- CN103248233A CN103248233A CN2013101503060A CN201310150306A CN103248233A CN 103248233 A CN103248233 A CN 103248233A CN 2013101503060 A CN2013101503060 A CN 2013101503060A CN 201310150306 A CN201310150306 A CN 201310150306A CN 103248233 A CN103248233 A CN 103248233A
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Abstract
The invention provides a method for realizing power isolation, which comprises a power module, wherein an active clamp normal shock converter is arranged at the input end of the power module and a buck converter is arranged at the output end of the power module; the active clamp normal shock converter is connected with the buck converter; and power voltage is inputted into the active clamp normal shock converter through the input end of the power module, is lowered via the buck converter and then is converted into the needed voltage to be outputted. Compared with the prior art, the method for realizing the power isolation has a wide applicable range, can be used for supplying power to equipment conforming to the CPCI (Compact Peripheral Component Interconnect ) power specification, is particularly used for supplying power to military products, is used in the severe environment and facilitates popularization.
Description
Technical field
The present invention relates to a kind of power safety technology, specifically a kind of at special environment for use, power supply must be realized the electrical isolation of input/output terminal, satisfies the implementation method of the insulating power supply of high-power power supply user demand simultaneously.
Background technology
Along with development of modern computer technology, more and more urgent to the requirement of power supply security.For avoiding equipment such as computer, server under normal temperature and hygrothermal environment, to be short-circuited, must guarantee that power safety is reliable.At special environment for use, power supply must be realized the electrical isolation of input/output terminal, under the prerequisite that power supply realize to be isolated, can guarantee the short circuit of the mainboard, keyset etc. of computer, server etc., thereby needs a kind of implementation method of isolation high-power power supply.
Summary of the invention
Technical assignment of the present invention is in the deficiencies in the prior art, and a kind of method that can realize isolated from power in adverse circumstances is provided.
Technical scheme of the present invention realizes in the following manner, this a kind of method that realizes isolated from power, comprise power module, the input of this power module arranges Active Clamped Forward Converters, output arranges step-down controller, above-mentioned Active Clamped Forward Converters connects step-down controller, supply voltage is input to Active Clamped Forward Converters by the input of power module, and step-down converts required voltage output to through step-down controller then.
As preferably, the supply voltage of the input of described power module input is 18～36V, converts 18V output after Active Clamped Forward Converters to, and then converts 12V, 3.3V, 5V or 5VSB to through step-down controller.
The beneficial effect that the present invention compared with prior art produces is:
A kind of method of isolated from power that realizes of the present invention adopts active clamp forward circuit, single-phase output, realize input/output terminal electrical isolation, satisfy safety test request in the relevant army mark, as leakage current and insulation resistance etc., can be used for especially being applied to the power supply of war products to the power devices that meets the CPCI power specifications, in adverse circumstances, use.
Description of drawings
Accompanying drawing 1 is structural representation block diagram of the present invention.
Mark in the accompanying drawing is represented respectively:
1, power module, 1.1, Active Clamped Forward Converters, 1.2, step-down controller.
Embodiment
Below in conjunction with accompanying drawing a kind of method of isolated from power that realizes provided by the present invention is done following detailed description the in detail.
As shown in Figure 1, a kind of method that realizes isolated from power, comprise power module 1, the input of this power module 1 arranges Active Clamped Forward Converters 1.1, output arranges step-down controller 1.2, the active clamping forward exciting converter 1.1 of power module 1 interior forward end has been realized the isolation of CPCI power supply input ground with output ground, above-mentioned Active Clamped Forward Converters 1.1 connects step-down controller 1.2, supply voltage is input to Active Clamped Forward Converters 1.1 by the input of power module 1.1, and 1.2 step-downs convert required voltage output to through step-down controller then.
The supply voltage of the input input of described power module 1 is 18～36V, converts 18V output after Active Clamped Forward Converters 1.1 to, and then converts 12V, 3.3V, 5V or 5VSB to through step-down controller 1.2.
That is to say, be input as 18V～36V direct voltage, at first the decompression converting circuit that constitutes through first order active clamping forward exciting converter 1.1 topologys is adjusted into 18V output with voltage, then the output of the voltage of 18V is exported the changing voltage of 3.3V, 5V, 12V and 5VSB respectively as the input voltage of partial DC-DC buck converter 1.2 topological structures through voltage-regulating circuit.
Second level step-down controller 1.2 is selected the buck step-down chip of high efficiency, low-power consumption for use, further guaranteeing on the basis of overall circuit efficiency, after the voltage adjustment, export 3.3V, 5V, 5VSB, 12V four road voltages respectively, finally by the CPCI interface external system is powered.
Active clamping forward exciting converter 1.1 topology adopts the chip portfolios of certain producer, realizes the output demand by the mode of two-way and line output, satisfies input ground simultaneously and exports the requirement of isolating between the ground; Be used for realizing a kind of control circuit of active-clamp transformer repositioning, compare with traditional clamp winding or resonant reset method that it can realize higher efficient.The big electric current gate drivers that is used for main switch, active-clamp switch and synchro switch has adjustable delay, to realize the highest efficient.The active clamp forward topology has the advantages that can carry out from resetting in each switch periods simultaneously, can use the leakage inductance energy, need not the extra winding that resets, and can realize the soft unlatching of primary switch, these have all greatly improved the efficient of active clamp forward topology, as first order decompression converting circuit, can guarantee the efficient of overall circuit effectively.
Power module of the present invention is applied in the model service device by test, and normal temperature testing power supply insulation resistance is not less than 2KM Ω, and under the hygrothermal environment, the insulation resistance of complete machine is not less than 2M Ω.
Claims (2)
1. method that realizes isolated from power, it is characterized in that: comprise power module, the input of this power module arranges Active Clamped Forward Converters, output arranges step-down controller, above-mentioned Active Clamped Forward Converters connects step-down controller, supply voltage is input to Active Clamped Forward Converters by the input of power module, and step-down converts required voltage output to through step-down controller then.
2. a kind of method that realizes isolated from power according to claim 1, it is characterized in that: the supply voltage of the input input of described power module is 18～36V, after Active Clamped Forward Converters, convert 18V output to, and then convert 12V, 3.3V, 5V or 5VSB to through step-down controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101503060A CN103248233A (en) | 2013-04-26 | 2013-04-26 | Method for realizing power isolation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101503060A CN103248233A (en) | 2013-04-26 | 2013-04-26 | Method for realizing power isolation |
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| CN103248233A true CN103248233A (en) | 2013-08-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013101503060A Pending CN103248233A (en) | 2013-04-26 | 2013-04-26 | Method for realizing power isolation |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104410268A (en) * | 2014-12-23 | 2015-03-11 | 浪潮集团有限公司 | Method for realizing 900-W high-efficiency isolated power supply module |
| CN113300604A (en) * | 2021-04-15 | 2021-08-24 | 南京林业大学 | Device for converting 10 watts of 110 kilovolts into 15 volts and minus 10 volts and implementation method |
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| CN1901345A (en) * | 2006-07-17 | 2007-01-24 | 南京航空航天大学 | Two way DC converter controlled by one-end voltage stable, one-end current stable phase shift plus PWM and its control method |
| CN201185394Y (en) * | 2008-04-02 | 2009-01-21 | 刘小荷 | Bimorph positive-exciting active clamping switch power source |
| CN201577026U (en) * | 2009-12-15 | 2010-09-08 | 天水七四九电子有限公司 | Isolated power supply module |
| CN101873068A (en) * | 2009-04-27 | 2010-10-27 | 武汉市创佳源电子有限公司 | General integration technology for realizing high efficiency of linear power supply |
| CN101917121A (en) * | 2010-07-15 | 2010-12-15 | 电子科技大学 | Active clamp synchronous rectification forward converter |
| CN102801303A (en) * | 2012-08-08 | 2012-11-28 | 浪潮集团有限公司 | Method for realizing high-power CPCI power supply isolation |
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2013
- 2013-04-26 CN CN2013101503060A patent/CN103248233A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1901345A (en) * | 2006-07-17 | 2007-01-24 | 南京航空航天大学 | Two way DC converter controlled by one-end voltage stable, one-end current stable phase shift plus PWM and its control method |
| CN201185394Y (en) * | 2008-04-02 | 2009-01-21 | 刘小荷 | Bimorph positive-exciting active clamping switch power source |
| CN101873068A (en) * | 2009-04-27 | 2010-10-27 | 武汉市创佳源电子有限公司 | General integration technology for realizing high efficiency of linear power supply |
| CN201577026U (en) * | 2009-12-15 | 2010-09-08 | 天水七四九电子有限公司 | Isolated power supply module |
| CN101917121A (en) * | 2010-07-15 | 2010-12-15 | 电子科技大学 | Active clamp synchronous rectification forward converter |
| CN102801303A (en) * | 2012-08-08 | 2012-11-28 | 浪潮集团有限公司 | Method for realizing high-power CPCI power supply isolation |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104410268A (en) * | 2014-12-23 | 2015-03-11 | 浪潮集团有限公司 | Method for realizing 900-W high-efficiency isolated power supply module |
| CN113300604A (en) * | 2021-04-15 | 2021-08-24 | 南京林业大学 | Device for converting 10 watts of 110 kilovolts into 15 volts and minus 10 volts and implementation method |
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Application publication date: 20130814 |