CN106469973B

CN106469973B - Adapter power supply

Info

Publication number: CN106469973B
Application number: CN201610326363.3A
Authority: CN
Inventors: 林国藩
Original assignee: FSP Technology Inc
Current assignee: FSP Technology Inc
Priority date: 2015-08-10
Filing date: 2016-05-17
Publication date: 2019-04-02
Anticipated expiration: 2036-05-17
Also published as: CN106469973A; TW201706763A; TWM534930U; TWI597593B

Abstract

The present invention discloses an adapter power supply, comprising a main circuit board and an auxiliary circuit board; the main circuit board has a first surface and a second surface opposite to each other, and a transformer and a first capacitor are arranged on the first surface of the main circuit board; the auxiliary circuit board has a first surface and a second surface opposite to each other, and an input rectifier and filter circuit is arranged on the first surface of the auxiliary circuit board; wherein the auxiliary circuit board is arranged above the main circuit board in parallel, and the input rectifier and filter circuit of the auxiliary circuit board is electrically connected to the first capacitor of the main circuit board. Under the conditions of the same electrical parameters and size specifications, the volume of the adapter power supply of the present invention is only half of the volume of the existing adapter power supply, which can meet the needs of miniaturized electronic devices.

Description

Adaptor power supplies

Technical field

The present invention relates to field of power supplies, more particularly to a kind of adaptor power supplies small in size, heat dissipation is good.

Background technique

Adaptor power supplies are the power supply conversion equipments of small portable electronic device and electronic apparatus, are widely used in electricity It talks about in the equipment such as composite aircraft, game machine, laptop.

General adaptor power supplies mainly include the input terminal for connecting external power supply, the power unit for converting external power supply, outer Connect the output line of the equipment such as laptop.Wherein, power unit includes shell, circuit board and several electricity for being distributed in circuit board Road (such as input circuit, conversion circuit, output circuit) composition.And power unit attainable power depend on each component electricity Property parameter and dimensions, the volume of circuit board and entire power unit then depends on dimensions and its setting position of each component It sets.However, at present under conditions of same electrical parameter and dimensions, the configuration of each component is difficult to reduce circuit board and entire The volume of power unit, to be unable to satisfy demand of the current consumer to electronics miniaturization.

Therefore, it is necessary to provide a kind of adaptation under conditions of same electrical parameter and dimensions with smaller volume Device power supply, to solve above-mentioned the deficiencies in the prior art.

Summary of the invention

The purpose of the present invention is to provide a kind of in same electrical parameter and adaptor power supplies source with smaller volume.

To achieve the above object, the technical solution of the present invention is as follows: providing a kind of adaptor power supplies comprising main circuit board and Auxiliary circuit board；Main circuit board has opposite the first face and the second face, the first face of the main circuit board be equipped with transformer and First capacitor；Auxiliary circuit board has opposite the first face and the second face, and it is whole that the first face of the auxiliary circuit board is equipped with input Flow filter circuit；Wherein the auxiliary circuit board is set to the top of the main circuit board in parallel, the auxiliary circuit board it is defeated The first capacitor for entering current rectifying and wave filtering circuit and the main circuit board is electrically connected.

Preferably, the first face of the main circuit board is additionally provided with the first inductance and output end, the transformer, described first Inductance, the output end adjacent to the first capacitor be arranged to be electrically connected with each other, and the transformer, first inductance, The output end is respectively positioned on one end far from the auxiliary circuit board.

Preferably, the adaptor power supplies further include the output line for being connected to the output end.

Preferably, the first capacitor is storage capacitor, the capacity of the storage capacitor is between 65 μ F between 100 μ F.

Preferably, the input rectifying filter circuit includes input terminal, electromagnetic interference filter circuit and rectifier cell.

Preferably, the first face of main circuit board described in the first face face of the auxiliary circuit board, and keep the electromagnetism dry The element for disturbing filter circuit is set between the first face of the main circuit board and the first face of the auxiliary circuit board.

Preferably, the electromagnetic interference filter circuit includes the second inductance, the second capacitor and third being electrically connected with each other Inductance, second inductance, the second capacitor and third inductance are sequentially arranged between the input terminal and rectifier cell.

Preferably, the first face of main circuit board described in the second face face of the auxiliary circuit board, and keep the electromagnetism dry The element for disturbing filter circuit is away from the first face of the main circuit board.

Preferably, the electromagnetic interference filter circuit includes the 4th inductance, the third capacitor and the 5th being electrically connected with each other Inductance, the 4th inductance, the 5th inductance are sequentially arranged between the input terminal and the rectifier cell, the third electricity It is installed with the top for being placed in the 5th inductance.

Preferably, the pin of the rectifier cell is electrically connected at the first face of the auxiliary circuit board, and the rectification Element is located at the side of the auxiliary circuit board.

Preferably, the second face of the auxiliary circuit board is equipped with bleeder circuit, the bleeder circuit is electrically connected at institute It states between electromagnetic interference filter circuit and the rectifier cell.

Preferably, the adaptor power supplies further include conduct piece, the conduct piece be supported in the main circuit board with it is described Between auxiliary circuit board, and the conduct piece be electrically connected the main circuit board first capacitor and the auxiliary circuit board it is whole Fluid element.

Preferably, the adaptor power supplies further include the input plug for being connected to the input terminal.

Preferably, the second face of the main circuit board is equipped with PWM circuit, circuit of synchronous rectification and control chip.

Preferably, the lengthwise of the main circuit board is greater than width, the auxiliary circuit board is set to the vertical of the main circuit board One end of length direction.

Preferably, the first capacitor is in long shaft-like, the long axis of the first capacitor is parallel to the vertical of the main circuit board Length direction.

Preferably, the area of the auxiliary circuit board is the one third of the area of the main circuit board.

Preferably, the length of the main circuit board between 41mm between 43mm, width between 39mm between 40mm,

Preferably, the length of the adaptor power supplies between 44mm between 47mm, width between 44mm between 45mm, Height is between 24mm between 25mm.

Preferably, the adaptor power supplies power is 55 watts to 65 watts.

Compared with prior art, due to adaptor power supplies of the invention, leading portion input rectifying filter circuit is independently arranged In on auxiliary circuit board, so as to there is more spaces can be with wiring and setting member, so as to effectively reduce on main circuit board The usable floor area of main circuit board, and then reduce the length and width of adaptor power supplies；Meanwhile transformer, first capacitor etc. being had There is large volume of element to concentrate on the first face of main circuit board, the element of small volume is set to the second face of main circuit board, auxiliary Circuit board is helped to be set to the top of main circuit board in parallel, that is, by the roughly the same element configuration of height in the same side, closely to arrange Arrange and reduce the height of adaptor power supplies.Therefore, under conditions of same electrical parameter and dimensions, adapter electricity of the present invention The volume in source only has the half of existing adaptor power supplies volume, is able to satisfy the demand of miniaturized electronic devices.

Detailed description of the invention

Fig. 1 is the stereoscopic schematic diagram that adaptor power supplies first embodiment of the present invention removes shell.

Fig. 2 is the side view of Fig. 1.

Fig. 3 is the front schematic view of the circuit board of adaptor power supplies first embodiment of the present invention.

Fig. 4 is the positive configuration diagram of the circuit board of adaptor power supplies first embodiment of the present invention.

Fig. 5 is the stereoscopic schematic diagram that adaptor power supplies second embodiment of the present invention removes shell.

Fig. 6 is the side view of Fig. 5.

Fig. 7 is the positive configuration diagram of the circuit board of adaptor power supplies second embodiment of the present invention.

Fig. 8 is the circuit block diagram of adaptor power supplies of the present invention.

Specific embodiment

The embodiment of the present invention described referring now to the drawings, similar element numbers represent similar element in attached drawing.

There is large volume of storage capacitor in general adaptor power supplies, volume can be related to the capacity of storage capacitor, And the capacity of storage capacitor can be directly proportional to the holding time of power supply (hold-up time), the adapter electricity for being 65 watts with power For source, the capacity of storage capacitor need to be between 65 μ F between 100 μ F, and the volume of storage capacitor is limited by capacity and can not Downsizing needs the configuration of improvement internal component or by the volume of other assemblies if the volume that need to reduce entire adaptor power supplies Downsizing.

As shown in figures 1-8, in view of the above-mentioned deficiency, adaptor power supplies 100 provided by the present invention, power unit include Main circuit board 110, auxiliary circuit board 120 and conduct piece 130.Wherein, before being independently arranged power unit on auxiliary circuit board 120 Section circuit, so as to there is more spaces can be with wiring and setting member on main circuit board 110, and then can effectively reduce main circuit The length of plate 110；Auxiliary circuit board 120 is set to the top of main circuit board 110 in parallel simultaneously, and auxiliary circuit board 120 is defeated The first capacitor 111 (being detailed in aftermentioned) for entering current rectifying and wave filtering circuit (being detailed in aftermentioned) and the main circuit board 110 is electrically connected, wherein This case passes through conduct piece 130 between the two and is electrically connected, to further reduce the height of adaptor power supplies 100.

Referring initially to shown in Fig. 1-4, for this case first embodiment, the lengthwise of main circuit board 110 is greater than width, and main electricity A side of the longitudinally of road plate 110 is equipped with a notch.Auxiliary circuit board 120 is set to the longitudinally of main circuit board 110 One end, and keep input terminal 121 (being detailed in aftermentioned) thereon corresponding with notch, the notch is for being arranged input plug 140 (see figure 1)。

Specifically, main circuit board 110 has opposite the first face and the second face, and the first face of main circuit board 110 is equipped with phase First capacitor 111 (C1), transformer 112, the first inductance 113 (L1) and the output end 114 being mutually electrically connected, wherein first capacitor 111, transformer 112, the element that the first inductance 113 is PWM circuit, the second face of main circuit board 110 are equipped with Pulse Width Modulation The other elements of circuit, circuit of synchronous rectification and control chip, wherein the second face of main circuit board 110 also settable power factor Correcting circuit, but not limited to this.In the present invention, first capacitor 111 is in long shaft-like, and the long axis of first capacitor 111 is parallel to master The longitudinally of circuit board 110, and in the short transverse of adaptor power supplies 100, first capacitor 111 is located at rectifier cell 123 Lower section (referring to Fig. 1,2).The first capacitor 111 is storage capacitor.Transformer 112, the first inductance 113 and output end 114 according to Secondary neighbouring first capacitor 111 is arranged, and transformer 112, the first inductance 113 and output end 114 are respectively positioned on far from auxiliary circuit board 120 one end, output end 114 are set between the first inductance 113 and a width side of main circuit board 110, and output end 114 is for connecting Meet output line 150 (see Fig. 1).In the present invention, by first capacitor 111, transformer 112, the isometric biggish member of the first inductance 113 Part is set on the first face of main circuit board 110, that is, being capable of close-packed arrays by the roughly the same element configuration of height in the same side To reduce the height of adaptor power supplies 100 and can effectively radiate.

100 power of adaptor power supplies in the present invention is 55W-65W, by following formula it can be seen that the appearance of first capacitor 111 Measure C_minCan be directly proportional to the T that holds time of power supply, to enable first capacitor 111 to meet holding time for adaptor power supplies (hold-up time) requirement, need to use capacity C_minBetween 65 μ F to the capacitor between 100 μ F, the body length of capacitor between Between 38mm-42mm, in the case where the body length of first capacitor 111 can not reduce, by above-mentioned first capacitor 111, become The set-up mode of depressor 112, the first inductance 113 and auxiliary circuit board 120, and the size of main circuit board 110 can be reduced, main circuit The length of plate 110 is between 41mm-43mm, and width is between 39mm-40mm.The area of auxiliary circuit board 120 about based on The one third of the area of circuit board 110.

Referring now to shown in Fig. 1-3, auxiliary circuit board 120 has opposite the first face and the second face, auxiliary circuit board 120 The first face be equipped with input rectifying filter circuit, which includes input terminal 121, electromagnetic interference filter circuit 122 and rectifier cell 123；Second face of auxiliary circuit board 120 is equipped with bleeder circuit 124, and bleeder circuit 124 is electrically connected at Between electromagnetic interference filter circuit 122 and rectifier cell 123.Wherein, the pin of rectifier cell 123 is electrically connected at auxiliary circuit First face of plate 120, and rectifier cell 123 is located at the side of auxiliary circuit board 120.

In conjunction with shown in Fig. 1-4, input terminal 121 include port 1 and port 2, port 1, port 2 be respectively firewire (L line) and Zero curve (N line), for connecting input plug 140 (see Fig. 1) so that input power is transmitted to electromagnetic interference filter circuit 122.Electricity Magnetic disturbance filter circuit 122 includes the second inductance L2, the second capacitor C2 and the third inductance L3 being electrically connected with each other, the second inductance L2, the second capacitor C2 and third inductance L3 are sequentially arranged between input terminal 121 and rectifier cell 123.Rectifier cell 123 includes four A diode.In addition, being additionally provided with fuse F1 on the first face of auxiliary circuit board 120, fuse F1 is set to the second capacitor C2 Between a side of auxiliary circuit board 120, the both ends of fuse F1 are electrically connected port 1 and the EMI Filtering of input terminal Second inductance L2 of circuit 122.In addition, bleeder circuit 124 includes two resistance, bleeder circuit 124 is electrically connected electromagnetic interference The third inductance L3 and rectifier cell 123 of filter circuit 122.

With continued reference to shown in Fig. 1-2, when auxiliary circuit board 120 is installed on main circuit board 110, auxiliary circuit board 120 is flat It is set to the top of main circuit board 110 capablely and makes the first face of its first face face main circuit board 110, auxiliary circuit board 120 is set The end where the notch of main circuit board 110, and the width direction one of the longitudinally of auxiliary circuit board 120 and main circuit board 110 It causes, and is set to element set by the first face of auxiliary circuit board 120 (such as element of electromagnetic interference filter circuit 122) Between first face of main circuit board 110 and the first face of auxiliary circuit board 120, and the first face of main circuit board 110 and auxiliary electricity The region that road plate 120 overlaps, then be the wiring for the second face element part of main circuit board 110 to be arranged, therefore auxiliary circuit Plate 120 can effectively reduce the usable floor area of main circuit board 110, make the element, fuse F1 and master of electromagnetic interference filter circuit 122 The element in the first face of circuit board 110 is generally aligned in the same plane, and conduct piece 130 is supported in main circuit board 110 and auxiliary circuit board 120 Between, and conduct piece 130 is electrically connected the first capacitor 111 of main circuit board 110 and the rectifier cell 123 of auxiliary circuit board 120, With will be in the power transmission to main circuit board 110 after 120 rectifying and wave-filtering of auxiliary circuit board.In the present embodiment, using conflict in master The element and conduct piece 130 in the first face of circuit board 110 supports auxiliary circuit board 120.It is, of course, also possible in auxiliary circuit board Other are arranged at 120 diagonally opposing corner does not have the supporting element of conducting function to support auxiliary circuit board 120.

Be this case second embodiment below with reference to shown in Fig. 5-7, in the embodiment structure of main circuit board 110 and its The arrangement of upper element is identical as above-mentioned first embodiment, repeats no more.The element cloth of auxiliary circuit board 120 is only illustrated below Set mode and its connection type with main circuit board 110.

Specifically, auxiliary circuit board 120 has opposite the first face and the second face, and the first face of auxiliary circuit board 120 is set There is input rectifying filter circuit, which includes input terminal 121, electromagnetic interference filter circuit 122 and rectification Element 123；Second face of auxiliary circuit board 120 is equipped with bleeder circuit (not shown), and it is dry that bleeder circuit is electrically connected at electromagnetism It disturbs between filter circuit 122 and rectifier cell 123.Wherein, the pin of rectifier cell 123 is electrically connected at auxiliary circuit board 120 The first face, and rectifier cell 123 is located at the side of auxiliary circuit board 120.

With continued reference to shown in Fig. 5-7, the electromagnetic interference filter circuit 122 includes the 4th inductance being electrically connected with each other L4, third capacitor C3 and the 5th inductance L5, the 4th inductance L4, the 5th inductance L5 are sequentially arranged in input terminal 121 and rectifier cell 123 Between, third capacitor C3 is set to the top of the 5th inductance L5 (see Fig. 6).In addition, also being set on the first face of auxiliary circuit board 120 There is fuse F1, fuse F1 is set between input terminal and third capacitor C3, and is located at the side of the 4th inductance L4, fuse The both ends of F1 are electrically connected port 1 and the 4th inductance L4 of input terminal.In addition, bleeder circuit 124 includes two resistance, partial pressure electricity The 5th inductance L5 and rectifier cell 123 of the electric connection of road 124 electromagnetic interference filter circuit 122.

As seen in figs. 5-6, when auxiliary circuit board 120 is installed on main circuit board 110, auxiliary circuit board 120 is set in parallel In main circuit board 110 top and make the first face of its second face face main circuit board 110, auxiliary circuit board 120 is set to main electricity End where the notch of road plate 110, and make (such as the EMI Filtering electricity of element set by the first face of auxiliary circuit board 120 The element on road 122) it is away from the first face of main circuit board 110, and rectifier cell 123 is located at the lower section of first capacitor 111.Main electricity The region that first face of road plate 110 and auxiliary circuit board 120 overlap, is provided at the electricity of the element in the second face of main circuit board 110 Road wiring area, therefore auxiliary circuit board 120 can effectively reduce the usable floor area of main circuit board 110, conduct piece 130 is supported in master Between first face of circuit board 110 and the second face of auxiliary circuit board 120, and conduct piece 130 is electrically connected main circuit board 110 The rectifier cell 123 of first capacitor 111 and auxiliary circuit board 120, by the power transmission after 120 rectifying and wave-filtering of auxiliary circuit board To main circuit board 110.

With continued reference to Fig. 2,6, since large volume of element to be concentrated on to the same side of main circuit board 110, make The height h of adaptor power supplies 100 is approximately equal to element heights, the thickness of main circuit board 110 of the second face setting of main circuit board 110 It spends, the summation of the whole height of auxiliary circuit board 120, and then reduces the height of adaptor power supplies 100.

Fig. 1-2,5-6 are recombined, this is obtained after above-mentioned main circuit board 110, auxiliary circuit board 120 are configured in shell The adaptor power supplies 100 are invented, and input plug 140 and output line 150 are located at outside shell, for connecing external electrical The equipment such as source and laptop.The length of the adaptor power supplies 100 between 44mm-47mm, width is between 44mm-45mm Between, highly between 24mm-25mm, and 100 power of adaptor power supplies is 55W-65W.It is suitable for supply notebook electricity The electric power of brain etc., and compared to the adaptor power supplies of existing equal-wattage, volume is only two points of existing adaptor power supplies One of.

Due to adaptor power supplies 100 of the invention, by input terminal 121, electromagnetic interference filter circuit 122 and rectifier cell 123 equal leading portions input rectifying filter circuits are independently disposed on auxiliary circuit board 120, so as to there is more skies on main circuit board 110 Between can be with wiring and setting member, so as to effectively reduce the usable floor area of main circuit board 110, and then reduce adapter electricity The length and width in source 100；Meanwhile there is large volume of element to concentrate on main electricity transformer 112, first capacitor 111 etc. First face of road plate 110, the element of small volume are set to the second face of main circuit board 110, and auxiliary circuit board 120 is set in parallel The top of main circuit board 110, that is, by the roughly the same element configuration of height in the same side, with close-packed arrays and reduce adapter The height of power supply 100.Therefore, under conditions of same electrical parameter and dimensions, the volume of adaptor power supplies 100 of the present invention The half of only existing adaptor power supplies volume, is able to satisfy the demand of miniaturized electronic devices.

The other structures of adaptor power supplies 100 of the present invention be it is well known to those of ordinary skill in the art, no longer do herein in detail Thin explanation.

The above disclosure is only a preferred embodiment of the invention, cannot limit the right of the present invention with this certainly Range, therefore according to equivalent variations made by scope of the present invention patent, it is still within the scope of the present invention.

Claims

1. An adapter power supply, characterized in that: comprising

a main circuit board having opposite first and second sides, the first side of the main circuit board is provided with a transformer and a first capacitor; and

an auxiliary circuit board, which has an opposite first surface and a second surface, and the first surface of the auxiliary circuit board is provided with an input rectification filter circuit;

The auxiliary circuit board is arranged in parallel above the main circuit board, and the input rectification filter circuit of the auxiliary circuit board is electrically connected to the first capacitor of the main circuit board;

Wherein the input rectification filter circuit includes an input end, an electromagnetic interference filter circuit and a rectifier element, the first side or the second side of the auxiliary circuit board is facing the first side of the main circuit board, and the electromagnetic interference The components of the filter circuit are arranged between the first surface of the main circuit board and the first surface of the auxiliary circuit board or the components of the electromagnetic interference filter circuit are kept away from the first surface of the main circuit board.

2 . The adapter power supply according to claim 1 , wherein a first inductor and an output terminal are further provided on the first surface of the main circuit board, and the transformer, the first inductor and the output terminal are adjacent to the transformer. 3 . The first capacitors are arranged to be electrically connected to each other, and the transformer, the first inductor, and the output end are all located at one end away from the auxiliary circuit board.

3. The power adapter of claim 2, further comprising an output line connected to the output end.

4 . The adapter power supply according to claim 1 , wherein the first capacitor is an energy storage capacitor, and the capacity of the energy storage capacitor is between 65 μF and 100 μF. 5 .

5 . The power adapter of claim 1 , wherein the electromagnetic interference filter circuit comprises a second inductor, a second capacitor and a third inductor that are electrically connected to each other, the second inductor, the second capacitor and The third inductor is sequentially arranged between the input end and the rectifying element.

6 . The power adapter of claim 1 , wherein the electromagnetic interference filter circuit comprises a fourth inductor, a third capacitor and a fifth inductor electrically connected to each other, the fourth inductor, the fifth inductor The inductor is arranged between the input end and the rectifying element in sequence, and the third capacitor is arranged above the fifth inductor.

7 . The power adapter of claim 1 , wherein the pins of the rectifying element are electrically connected to the first side of the auxiliary circuit board, and the rectifying element is located on the side of the auxiliary circuit board. 8 .

8 . The adapter power supply according to claim 1 , wherein a voltage divider circuit is provided on the second surface of the auxiliary circuit board, and the voltage divider circuit is electrically connected to the electromagnetic interference filter circuit and the between the rectifier elements.

9 . The adapter power supply according to claim 1 , further comprising a conductive member, the conductive member is supported between the main circuit board and the auxiliary circuit board, and the conductive member is electrically connected to the The first capacitor of the main circuit board and the rectifier element of the auxiliary circuit board.

10. The power adapter of claim 1, further comprising an input plug connected to the input end.

11. The power adapter of claim 1, wherein a pulse width modulation circuit, a synchronous rectification circuit and a control chip are provided on the second surface of the main circuit board.

12 . The power adapter of claim 1 , wherein the main circuit board has a longitudinal length greater than a transverse width, and the auxiliary circuit board is disposed at one end of the main circuit board in the longitudinal direction. 13 .

13 . The power adapter of claim 12 , wherein the first capacitor has a long axis shape, and the long axis of the first capacitor is parallel to the longitudinal direction of the main circuit board. 14 .

14. The power adapter of claim 12, wherein the area of the auxiliary circuit board is one third of the area of the main circuit board.

15 . The power adapter of claim 12 , wherein the length of the main circuit board is between 41 mm and 43 mm, and the width is between 39 mm and 40 mm. 16 .

16 . The power adapter of claim 1 , wherein the length of the power adapter is between 44mm and 47mm, the width is between 44mm and 45mm, and the height is between 24mm and 25mm. 17 .

17. The adapter power supply of claim 1, wherein the power of the adapter power supply is 55 watts to 65 watts.