CN104901551A - High power density low voltage output synchronous rectification power supply module - Google Patents
High power density low voltage output synchronous rectification power supply module Download PDFInfo
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- CN104901551A CN104901551A CN201510351712.2A CN201510351712A CN104901551A CN 104901551 A CN104901551 A CN 104901551A CN 201510351712 A CN201510351712 A CN 201510351712A CN 104901551 A CN104901551 A CN 104901551A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
Abstract
The invention discloses a high power density low voltage output synchronous rectification power supply module. The power supply module comprises a transformer, a multilayer PCB board, an aluminum substrate and a housing. The high power density low voltage output synchronous rectification power supply module is characterized in that a primary part is a single-end forward active clamp circuit, and a secondary part is a synchronous rectification circuit. The transformer adopts a planar transformer magnetic core. A transformer coil, a control circuit and a power circuit are designed in an integrated manner. The multilayer PCB board mode is adopted. Thermal conduction of power devices, the transformer and inductors are realized by a conductive silicone rubber and substrate pasting manner. The internal power loop, the housing, the control circuit, the transformer and the inductors of the power supply module are designed in an integrated manner, the structure is simple, the reliability is good, the cost is low, and the application range is wide.
Description
Technical field
The present invention relates to a kind of power module, specifically, relate to a kind of high power density low pressure and export synchronous rectified power module.
Background technology
At present, along with international power module development trend is output LOW voltage big current, this series products of market demand gets more and more, the IQ24 series of products that synqor company of the U.S. produces are typical output LOW voltage big current products, and be applied in very important occasion at home, there is irreplaceable effect.
Along with the recent U.S. to impose embargo policy to Some Domestic module, have impact on the progress of domestic big event and the war preparedness supportability of country.This just requires domesticly to be domesticized as early as possible, so not only can reduce import charges, improves Project-developing progress, also can improve the level of domestic power supply product, and can promote the development of domestic industries, ensure national war preparedness strength.
Summary of the invention
The present invention is just in order to solve the problems of the technologies described above, and a kind of high power density low pressure of design exports synchronous rectified power module.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of high power density low pressure exports synchronous rectified power module, comprises transformer, multi-layer PCB board, aluminium sheet and shell.It is single-end ortho-exciting active clamp circuit that high power density low pressure exports synchronous rectified power module primary part, the armature winding different name end of transformer T1 is connected with clamp capacitor C16 one end with the drain electrode of power switch pipe Q1, and the grid of power switch pipe Q1 is connected with the equal andlogic control circuit of source electrode; The clamp capacitor C16 other end is connected with the drain electrode of active clamp power switch pipe Q2, the grid of active clamping switch tube Q2 is connected with diode D anode with isolation capacitance C15 one end, and source electrode, the isolation capacitance C15 of active clamping switch tube Q2 are connected with diode D negative electrode andlogic control circuit; Sub section is circuit of synchronous rectification, the secondary winding Same Name of Ends of transformer T1 is connected with the grid of continued flow tube Q5 with Q6 with the drain electrode of rectifying tube Q3 with Q4, the secondary winding different name end of transformer T1 is connected with the drain electrode of continued flow tube Q5 with Q6 with the grid of rectifying tube Q3 with Q4, and the source electrode of rectifying tube Q3 with Q4 is connected with the source electrode of continued flow tube Q5 with Q6 and connects output filter circuit again; The two ends being connected on output filter capacitor CO are overstated in output voltage sampling circuit test side, and output voltage sampling circuit output is connected by OC circuit andlogic control circuit.
Described high power density low pressure exports synchronous rectified power module, its transformer coil T1, control circuit and the integrated design of power circuit, adopts the mode of multi-layer PCB board; Power device, transformer are by conduction silicon rubber and substrate sticking mode heat loss through conduction; Input voltage covers DC9V-DC80V, and output voltage covers DC1.5V-DC15V, and overall dimension is 36.47*26.31*12.7mm, and peak power output is 50W, and maximum output current is 25A, and maximum power density is 67.3W/in3.
Described high power density low pressure exports synchronous rectified power module, and its transformer T1 adopts FERRITE CORE P14/8-3C81.
Described high power density low pressure exports synchronous rectified power module, and its power switch pipe Q1 and active clamping switch tube Q2 is MOSFET zero voltage switch pipe.
The present invention has features:
1, isolating withstand voltage between input and output is DC500V;
2, internal power loop, shell, control circuit, transformer and inductor integrated Integrated design;
3, natural heat dissipation mode is adopted, without the need to additional cooling measure;
4, input voltage covers DC9V-DC80V, and output voltage covers DC1.5V-DC15V(single channel and exports), volume is: 36.47*26.31*12.7(unit: mm), peak power output is 50W, and maximum output current is 25A, and maximum power density is: 67.3W/in
3.
The invention has the beneficial effects as follows internal power loop, shell, control circuit, transformer and inductor integrated Integrated design, ensure that its structure is simple, good reliability, cost are low, wide accommodation.
Accompanying drawing explanation
Fig. 1 is that high power density low pressure of the present invention exports synchronous rectified power module principle of equal effects block diagram.
Fig. 2 is that high power density low pressure of the present invention exports the input of synchronous rectified power module, test and output point mode chart.
Fig. 3 is that high power density low pressure of the present invention exports synchronous rectified power modular circuit schematic diagram.
Fig. 4 is that high power density low pressure of the present invention exports synchronous rectified power module top view structure chart.
Fig. 5 is that high power density low pressure of the present invention exports synchronous rectified power module sectional structure chart.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further described.
As shown in Fig. 1 and 3, a kind of high power density low pressure exports synchronous rectified power module, comprises transformer, multi-layer PCB board, aluminium sheet and shell.It is single-end ortho-exciting active clamp circuit that high power density low pressure exports synchronous rectified power module primary part, the armature winding different name end of transformer T1 is connected with clamp capacitor C16 one end with the drain electrode of power switch pipe Q1, and the grid of power switch pipe Q1 is connected with the equal andlogic control circuit of source electrode; The clamp capacitor C16 other end is connected with the drain electrode of active clamp power switch pipe Q2, the grid of active clamping switch tube Q2 is connected with diode D anode with isolation capacitance C15 one end, and source electrode, the isolation capacitance C15 of active clamping switch tube Q2 are connected with diode D negative electrode andlogic control circuit; Sub section is circuit of synchronous rectification, the secondary winding Same Name of Ends of transformer T1 is connected with the grid of continued flow tube Q5 with Q6 with the drain electrode of rectifying tube Q3 with Q4, the secondary winding different name end of transformer T1 is connected with the drain electrode of continued flow tube Q5 with Q6 with the grid of rectifying tube Q3 with Q4, and the source electrode of rectifying tube Q3 with Q4 is connected with the source electrode of continued flow tube Q5 with Q6 and connects output filter circuit again; The two ends being connected on output filter capacitor CO are overstated in output voltage sampling circuit test side, and output voltage sampling circuit output is connected by OC circuit andlogic control circuit.
Described high power density low pressure exports synchronous rectified power module, its transformer coil T1, control circuit and the integrated design of power circuit, adopts the mode of multi-layer PCB board; Power device, transformer are by conduction silicon rubber and substrate sticking mode heat loss through conduction; Input voltage covers DC9V-DC80V, and output voltage covers DC1.5V-DC15V, and overall dimension is 36.47*26.31*12.7mm, and peak power output is 50W, and maximum output current is 25A, and maximum power density is 67.3W/in3.By the IQ24 series of products adopting the power module of above-mentioned design to substitute the production of synqor company of the U.S. completely, realize production domesticization, be widely applied.
Described high power density low pressure exports synchronous rectified power module, and its transformer T1 adopts FERRITE CORE P14/8-3C81.
Described high power density low pressure exports synchronous rectified power module, and its power switch pipe Q1 and active clamping switch tube Q2 is MOSFET zero voltage switch pipe.
As shown in Figure 3 and Figure 4, power module inside of the present invention adopts the integrated design of transformer, transformer coil, control circuit and power circuit, adopt the mode structure of multi-layer PCB board, this mode structure is simple, reliability is high, all devices adopt paster mode, are mounted by automatic placement machine, reduce human factor.Power module internal power device, transformer are by conduction silicon rubber and substrate sticking mode heat loss through conduction, and its heat-sinking capability is very good, can ensure the heat radiation of interiors of products and the heat balance of each several part.
High power density low pressure exports synchronous rectified power module, the integrated design of its internal transformer, transformer coil, control circuit and power circuit, and adopt the mode of multi-layer PCB board, Fig. 3 and cross-section structure Fig. 4 is shown in by its top view structure chart.Note: 1: shell; 2: input contact pin; 3: export contact pin; 4: input filter and control circuit; 5: output filtering, control circuit and energy storage inductor; 6: four layers of integrated design of PCB, power circuit and control circuit are on pcb board; 7: aluminium sheet: the heat conduction of transformer and power tube is gone out; 8: heat conductive silica gel: power device and aluminium sheet are pasted, plays heat conduction and fixation; 9: power output pipe; 10: input power pipe; 11: transformer.
As shown in Fig. 1 and 3, the operation principle that a kind of high power density low pressure of the present invention exports synchronous rectified power module is: when after power MOSFET switch tube Q1 conducting, transformer magnetizing current and load current start linear rising, when turning off, exciting current and the load current of converting transformer primary side charge to the junction capacitance of power MOSFET switch tube Q1, limit the voltage build-up rate on power MOSFET switch tube Q1, therefore power MOSFET switch tube Q1 is zero voltage turn-off.During this, power MOSFET switch tube Q1 both end voltage continues to rise, after rising to the stable voltage of clamp capacitor C16, parasitic diode conducting in clamping switch tube, exciting current flows to clamp capacitor C16 through this diode and charges to it, voltage is clamped at Vin+Vcc, due to parasitic diode conducting, then clamper tube can no-voltage open-minded.After exciting current reduces to 0, clamper tube parasitic diode ends naturally, and exciting current is through clamping switch tube reverse flow, when turning off to clamping switch tube, due to the existence of clamp capacitor C16 and junction capacitance, clamper tube both end voltage can not be suddenlyd change, and therefore clamper tube is zero voltage turn-off.Clamper tube closes has no progeny, and exciting current flows through power MOSFET switch tube Q1 circle electric capacity, and junction capacitance starts electric discharge, and exciting current oppositely increases.After this, junction capacitance both end voltage continuous decrease, then transformer two polygonal voltage is just, until power MOSFET switch tube Q1 both end voltage starts to carry out next cycle after becoming 0.In whole process, maximum voltage on power switch pipe is by clamp circuit clamper, secondary equally two rectification metal-oxide-semiconductors (Q3 and Q4) and two afterflow metal-oxide-semiconductor (Q5 and Q6) voltages are also by clamper, the outer all power device both end voltage of removing clamping switch tube are all be quasi-square wave, reduce voltage request, and reduce leakage loss, because the conducting internal resistance of secondary commutation and afterflow metal-oxide-semiconductor is only 5 milliohm-10 milliohms, when output current is 25A, conducting resistance is 50 milliohms, its conduction loss is: 3.125W-6.25W, its conducting damage be far smaller than rectifier diode conducting damage (general Schottky diode conduction voltage drop is 0.3V-0.5V, when exporting as 25A, conduction loss is 7.5W-12.5W), power MOSFET switch tube Q1 soft switching simultaneously, clamping switch tube Sofe Switch, and magnetization energy and leakage inductance energy all can be fed back to importation, reduce leakage inductance loss.Output filter (L0, C0) is below for reducing the ripple of output dc voltage.
After adopting active clamp soft switch technique and secondary synchronization rectification, input energy can be close to and be transferred to output losslessly, unnecessary leakage inductance and magnetization energy can feed back to importation, the loss of secondary synchronization rectifier switch pipe is only and adopts 1/4 ~ 1/2 of conventional rectifier technology Schottky rectification loss, not only increase the efficiency of power module, also can greatly reduce conducted noise and radiated noise, it is most effective reaches about 95%.
The present invention is not limited to above-mentioned preferred forms, anyone other any or akin products identical with the present invention drawn under enlightenment of the present invention, all drops within protection scope of the present invention.
Claims (4)
1. high power density low pressure exports a synchronous rectified power module, comprises transformer, multi-layer PCB board, aluminium sheet and shell; It is characterized in that: it is single-end ortho-exciting active clamp circuit that high power density low pressure exports synchronous rectified power module primary part, the armature winding different name end of transformer T1 is connected with clamp capacitor C16 one end with the drain electrode of power switch pipe Q1, and the grid of power switch pipe Q1 is connected with the equal andlogic control circuit of source electrode; The clamp capacitor C16 other end is connected with the drain electrode of active clamp power switch pipe Q2, the grid of active clamping switch tube Q2 is connected with diode D anode with isolation capacitance C15 one end, and source electrode, the isolation capacitance C15 of active clamping switch tube Q2 are connected with diode D negative electrode andlogic control circuit; Sub section is circuit of synchronous rectification, the secondary winding Same Name of Ends of transformer T1 is connected with the grid of continued flow tube Q5 with Q6 with the drain electrode of rectifying tube Q3 with Q4, the secondary winding different name end of transformer T1 is connected with the drain electrode of continued flow tube Q5 with Q6 with the grid of rectifying tube Q3 with Q4, and the source electrode of rectifying tube Q3 with Q4 is connected with the source electrode of continued flow tube Q5 with Q6 and connects output filter circuit again; The two ends being connected on output filter capacitor CO are overstated in output voltage sampling circuit test side, and output voltage sampling circuit output is connected by OC circuit andlogic control circuit.
2. high power density low pressure according to claim 1 exports synchronous rectified power module, it is characterized in that: the integrated design of transformer coil T1, control circuit and power circuit, adopts the mode of multi-layer PCB board; Power device, transformer are by conduction silicon rubber and substrate sticking mode heat loss through conduction; Input voltage covers DC9V-DC80V, and output voltage covers DC1.5V-DC15V, and overall dimension is 36.47*26.31*12.7mm, and peak power output is 50W, and maximum output current is 25A, and maximum power density is 67.3W/in3.
3. high power density low pressure according to claim 1 exports synchronous rectified power module, it is characterized in that: transformer T1 adopts FERRITE CORE P14/8-3C81.
4. high power density low pressure according to claim 1 exports synchronous rectified power module, it is characterized in that: power switch pipe Q1 and active clamping switch tube Q2 is MOSFET zero voltage switch pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510351712.2A CN104901551A (en) | 2015-06-24 | 2015-06-24 | High power density low voltage output synchronous rectification power supply module |
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| CN201510351712.2A CN104901551A (en) | 2015-06-24 | 2015-06-24 | High power density low voltage output synchronous rectification power supply module |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107947591A (en) * | 2017-12-19 | 2018-04-20 | 河南思维轨道交通技术研究院有限公司 | Isolated power supply module of railway locomotive vehicle electronic device |
| CN109787484A (en) * | 2017-11-10 | 2019-05-21 | 泰达电子股份有限公司 | Synchronous rectification module |
| CN114845462A (en) * | 2022-04-12 | 2022-08-02 | 东南大学 | Plane integrated LCL alternating current filter |
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| JP2002320385A (en) * | 2001-04-19 | 2002-10-31 | Yokogawa Electric Corp | Switching converter |
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| CN202150798U (en) * | 2011-06-24 | 2012-02-22 | 航天长峰朝阳电源有限公司 | Ultrathin packaging extra-low ripple wave switching mode DC/DC converter |
| WO2013037308A1 (en) * | 2011-09-14 | 2013-03-21 | Huawei Technologies Co., Ltd. | Soft transition apparatus and method for switching power converters |
| CN204696928U (en) * | 2015-06-24 | 2015-10-07 | 航天长峰朝阳电源有限公司 | High power density low pressure exports synchronous rectified power module |
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2015
- 2015-06-24 CN CN201510351712.2A patent/CN104901551A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002320385A (en) * | 2001-04-19 | 2002-10-31 | Yokogawa Electric Corp | Switching converter |
| CN101237189A (en) * | 2007-01-31 | 2008-08-06 | 力博特公司 | Positive activation converter |
| CN101174797A (en) * | 2007-08-14 | 2008-05-07 | 伊博电源（杭州）有限公司 | Synchronous commutation convertor with variable turn ratio |
| CN202150798U (en) * | 2011-06-24 | 2012-02-22 | 航天长峰朝阳电源有限公司 | Ultrathin packaging extra-low ripple wave switching mode DC/DC converter |
| WO2013037308A1 (en) * | 2011-09-14 | 2013-03-21 | Huawei Technologies Co., Ltd. | Soft transition apparatus and method for switching power converters |
| CN204696928U (en) * | 2015-06-24 | 2015-10-07 | 航天长峰朝阳电源有限公司 | High power density low pressure exports synchronous rectified power module |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109787484A (en) * | 2017-11-10 | 2019-05-21 | 泰达电子股份有限公司 | Synchronous rectification module |
| CN109787484B (en) * | 2017-11-10 | 2021-06-04 | 泰达电子股份有限公司 | Synchronous rectification module |
| CN107947591A (en) * | 2017-12-19 | 2018-04-20 | 河南思维轨道交通技术研究院有限公司 | Isolated power supply module of railway locomotive vehicle electronic device |
| CN114845462A (en) * | 2022-04-12 | 2022-08-02 | 东南大学 | Plane integrated LCL alternating current filter |
| CN114845462B (en) * | 2022-04-12 | 2024-04-12 | 东南大学 | Planar integrated LCL alternating current filter |
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Application publication date: 20150909 |