A rectifier bridge chip with integrated diode, linear rectifier circuit and manufacturing method

Abstract

The invention discloses a rectifier bridge chip with integrated diodes, a linear rectifier circuit and a manufacturing method, comprising a chip shell, a rectifier bridge component and at least one fast recovery diode, wherein the rectifier bridge component and each fast recovery diode are integrated in the chip shell, and a first pin group and a second pin group are provided on the chip shell, both of which extend to the outside, the fast recovery diode is connected to the first pin group, and the rectifier bridge component is connected to the second pin group. When the rectifier bridge chip is used, the fast recovery diode and the rectifier bridge component can be respectively connected through the first pin group and the second pin group, so that the fast recovery diode and the rectifier bridge component can be used without additionally adding a fast recovery diode, and the use is convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of rectifier bridge chips, and in particular to a rectifier bridge chip with integrated diodes, a linear rectifier circuit and a manufacturing method thereof. Background Art

[0002] Traditional rectifier bridge chips generally only include rectifier bridge components. In actual applications, for example, when using rectifier bridge chips to build linear rectifier circuits, other components need to be connected additionally, which makes it inconvenient to use. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a rectifier bridge chip with integrated diodes, which is easy to use.

[0004] The present invention also proposes a linear rectifier circuit which uses a rectifier bridge chip with an integrated diode and is simple to construct.

[0005] The present invention also provides a method for manufacturing a rectifier bridge chip, so that the rectifier bridge chips are tightly connected.

[0006] According to the first aspect of the present invention, a rectifier bridge chip with integrated diodes includes a chip housing, a rectifier bridge assembly and at least one fast recovery diode, wherein the rectifier bridge assembly and each of the fast recovery diodes are integrated into the chip housing, and a first pin group and a second pin group extending to the outside are provided on the chip housing, the fast recovery diode is connected to the first pin group, and the rectifier bridge assembly is connected to the second pin group.

[0007] A diode-integrated rectifier bridge chip according to an embodiment of the present invention has at least the following beneficial effects:

[0008] The rectifier bridge chip of the present invention integrates a rectifier bridge component and at least one fast recovery diode in a chip shell, and the fast recovery diode and the rectifier bridge component are respectively led out by a first pin group and a second pin group. When the rectifier bridge chip is used, the fast recovery diode and the rectifier bridge component can be respectively connected through the first pin group and the second pin group, so that the fast recovery diode and the rectifier bridge component can be used without additionally adding a fast recovery diode, and the use is convenient.

[0009] According to some embodiments of the present invention, the rectifier bridge assembly includes an AC input terminal, a positive output terminal and a negative output terminal, one pole of the fast recovery diode is connected to the positive output terminal, and the other pole of the fast recovery diode is connected to the first pin group.

[0010] According to some embodiments of the present invention, an anode of the fast recovery diode is connected to the positive output terminal, and a cathode of the fast recovery diode is connected to the first pin group.

[0011] According to some embodiments of the present invention, a cathode of the fast recovery diode is connected to the positive output terminal, and an anode of the fast recovery diode is connected to the first pin group.

[0012] According to some embodiments of the present invention, the rectifier bridge assembly includes a rectifier diode D1, a rectifier diode D2, a rectifier diode D3 and a rectifier diode D4, the cathode of the rectifier diode D1 is connected to the anode of the rectifier diode D3 to form one phase of the AC input end, the anode of the rectifier diode D1 is connected to the anode of the rectifier diode D2 to form a negative output end, the cathode of the rectifier diode D2 is connected to the anode of the rectifier diode D4 to form another phase of the AC input end, and the cathode of the rectifier diode D3 is connected to the cathode of the rectifier diode D4 to form a positive output end.

[0013] According to some embodiments of the present invention, the second pin group includes a first AC pin, a second AC pin, a positive pin and a negative pin, one phase of the AC input end is connected to the first AC pin, another phase of the AC input end is connected to the second AC pin, the positive output end is connected to the positive pin, and the negative output end is connected to the negative pin.

[0014] According to some embodiments of the present invention, the chip shell includes an upper shell and a lower shell, the upper shell is connected to the lower shell and forms a packaging cavity inside, the rectifier bridge assembly and the fast recovery diode are arranged in the packaging cavity, and the packaging cavity is filled with sealant.

[0015] The linear rectifier circuit according to the second embodiment of the present invention includes a rectifier bridge chip with integrated diodes disclosed in any of the above embodiments.

[0016] The linear rectifier circuit according to the embodiment of the present invention has at least the following beneficial effects:

[0017] The linear rectifier circuit of the present invention can be constructed by using a rectifier bridge chip with an integrated diode, without the need to add an additional fast recovery diode, thus reducing the welding steps and being easy to use.

[0018] According to the manufacturing method of the embodiment of the third aspect of the present invention, the method includes: welding multiple rectifier diodes and several fast recovery diodes into an integrated body according to a set layout, connecting the first pin group to the fast recovery diode, and connecting the second pin group to the rectifier diode; installing the integrated body in a chip shell, and respectively leading the first pin group and the second pin group out of the chip shell to the outside; using a sealant to encapsulate the integrated body in the chip shell.

[0019] The manufacturing method according to the embodiment of the present invention has at least the following beneficial effects:

[0020] The manufacturing method of the present invention firstly welds a plurality of rectifier diodes and a plurality of fast recovery diodes into an integrated body according to a set layout, and then packages them in a chip shell, so that the connection is tight and the yield rate is high.

[0021] According to some embodiments of the present invention, the fast recovery diode and / or the rectifier diode is formed by a PN junction through a glass passivation process.

[0022] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0024] Figure 1 A three-dimensional schematic diagram of one embodiment of a rectifier bridge chip of the present invention;

[0025] Figure 2 A circuit diagram of one embodiment of a rectifier bridge chip of the present invention;

[0026] Figure 3 A circuit diagram of another embodiment of the rectifier bridge chip of the present invention;

[0027] Figure 4 The figure is a schematic diagram of the internal structure of a rectifier bridge chip according to one embodiment of the present invention.

[0028] Reference numerals:

[0029] Chip shell 100, upper shell 110, lower shell 120, sealant 130, package inner cavity 140, rectifier bridge assembly 200, first AC pin 310, second AC pin 320, positive pin 330, negative pin 340, fast recovery diode 400, first pin group 500. DETAILED DESCRIPTION

[0030] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0031] In the description of the present invention, it should be understood that descriptions involving orientation, such as the orientations or positional relationships indicated by terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside” and “outside” are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0032] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] like Figure 1-4 As shown, a rectifier bridge chip with integrated diodes according to an embodiment of the first aspect of the present invention includes a chip housing 100, a rectifier bridge assembly 200 and at least one fast recovery diode 400. The rectifier bridge assembly 200 and each fast recovery diode 400 are integrated into the chip housing 100. The chip housing 100 is provided with a first pin group 500 and a second pin group, both of which extend to the outside. The fast recovery diode 400 is connected to the first pin group 500, and the rectifier bridge assembly 200 is connected to the second pin group.

[0035] The chip housing 100 may be in various shapes, and a plurality of openings may be provided on the side of the chip housing 100 to lead out the first pin group 500 connected to the fast recovery diode 400 and the second pin group connected to the rectifier bridge assembly 200 .

[0036] The rectifier bridge chip of the present invention integrates a rectifier bridge component 200 and at least one fast recovery diode 400 in a chip housing 100, and the fast recovery diode 400 and the rectifier bridge component 200 are respectively led out by a first pin group 500 and a second pin group. When the rectifier bridge chip is used, the fast recovery diode 400 and the rectifier bridge component 200 can be respectively connected through the first pin group 500 and the second pin group, so that the fast recovery diode 400 and the rectifier bridge component 200 can be used without additionally adding a fast recovery diode 400, which is convenient to use.

[0037] In some embodiments of the present invention, there may be one or more fast recovery diodes 400. The following is an example in which there is only one fast recovery diode 400. Each fast recovery diode 400 is paired with the first pin group 500 one by one. The fast recovery diode 400 can be encapsulated in the chip housing 100, but is not connected to the rectifier bridge assembly 200. At this time, the first pin group 500 includes two pins, which are respectively connected to the two poles of the fast recovery diode 400 and led to the outside world; or, in some embodiments of the present invention, the rectifier bridge assembly 200 includes an AC input terminal, a positive output terminal and a negative output terminal, one pole of the fast recovery diode 400 is connected to the positive output terminal, and the other pole of the fast recovery diode 400 is connected to the first pin group 500. At this time, the first pin group 500 includes only one pin, and one pole of the fast recovery diode 400 is connected to the rectifier bridge assembly 200, which can be directly applied to related circuits without the need to weld the fast recovery diode 400 to the rectifier bridge again, which is easy to use.

[0038] In some embodiments of the present invention, Figure 2 As shown, the anode of the fast recovery diode 400 is connected to the positive output terminal, and the cathode of the fast recovery diode 400 is connected to the first pin group 500, or, as shown in FIG. Figure 3 As shown, the cathode of the fast recovery diode 400 is connected to the positive output terminal, and the anode of the fast recovery diode 400 is connected to the first pin group 500 .

[0039] In some embodiments of the present invention, the rectifier bridge assembly 200 is a full-bridge rectifier, and the rectifier bridge assembly 200 includes a rectifier diode D1, a rectifier diode D2, a rectifier diode D3 and a rectifier diode D4. The cathode of the rectifier diode D1 is connected to the anode of the rectifier diode D3 to form one phase of the AC input end, the anode of the rectifier diode D1 is connected to the anode of the rectifier diode D2 to form a negative output end, the cathode of the rectifier diode D2 is connected to the anode of the rectifier diode D4 to form another phase of the AC input end, and the cathode of the rectifier diode D3 is connected to the cathode of the rectifier diode D4 to form a positive output end. Alternatively, in some embodiments of the present invention, the rectifier bridge assembly 200 is a half-bridge rectifier. Different rectifier bridge assemblies 200 can be applied to different circuits, which is practical and convenient.

[0040] In some embodiments of the present invention, the second pin group includes a first AC pin 310, a second AC pin 320, a positive pin 330 and a negative pin 340, one phase of the AC input end is connected to the first AC pin 310, the other phase of the AC input end is connected to the second AC pin 320, the positive output end is connected to the positive pin 330, and the negative output end is connected to the negative pin 340. In some embodiments of the present invention, the rectifier bridge chip is extended with five pins for practical use.

[0041] In some embodiments of the present invention, Figure 1 , Figure 4 As shown, the chip shell 100 includes an upper shell 110 and a lower shell 120, the upper shell 110 is connected to the lower shell 120 and forms a packaging cavity 140 inside, the rectifier bridge assembly 200 and the fast recovery diode 400 are arranged in the packaging cavity 140, and the packaging cavity 140 is filled with sealant 130. Here, the fast recovery diode 400 and the rectifier diode D1, rectifier diode D2, rectifier diode D3 and rectifier diode D4 constituting the rectifier bridge assembly 200 are packaged together in the chip shell 100. The use of sealant 130 for packaging can improve insulation performance and waterproof performance.

[0042] In some embodiments of the present invention, a light-emitting portion may be provided on the fast recovery diode 400, and a light-transmitting window (not shown in the figure) may be provided on the chip housing 100. The light emitted by the fast recovery diode 400 may be set to the outside through the light-transmitting window, or the fast recovery diode 400 may be passed through the light-transmitting window. The user may judge the connection status of the fast recovery diode 400 or whether the fast recovery diode 400 is damaged, etc., based on whether light is emitted. In addition, a light-transmitting cover may be provided at the light-transmitting window to encapsulate the light-transmitting window to ensure good waterproof sealing performance.

[0043] The linear rectifier circuit according to the second embodiment of the present invention includes a rectifier bridge chip with integrated diodes disclosed in any of the above embodiments.

[0044] The linear rectifier circuit of the present invention can be constructed by using a rectifier bridge chip with integrated diodes, without the need to add an additional fast recovery diode 400, thus reducing welding steps and being easy to use.

[0045] According to the manufacturing method of the embodiment of the third aspect of the present invention, the method includes: welding multiple rectifier diodes and several fast recovery diodes into an integrated body according to a set layout, connecting the first pin group to the fast recovery diode, and connecting the second pin group to the rectifier diode; installing the integrated body in a chip shell, and respectively leading the first pin group and the second pin group out of the chip shell to the outside; using a sealant to encapsulate the integrated body in the chip shell.

[0046] Among them, the set layout can be a full-bridge rectifier layout or a half-bridge rectifier layout. In the embodiment of the full-bridge rectifier layout, there are four rectifier diodes, namely rectifier diode D1, rectifier diode D2, rectifier diode D3 and rectifier diode D4. The cathode of the rectifier diode D1 is connected to the anode of the rectifier diode D3 to form one phase of the AC input end, the anode of the rectifier diode D1 is connected to the anode of the rectifier diode D2 to form a negative output end, the cathode of the rectifier diode D2 is connected to the anode of the rectifier diode D4 to form another phase of the AC input end, and the cathode of the rectifier diode D3 is connected to the cathode of the rectifier diode D4 to form a positive output end.

[0047] Wires are welded between the rectifier diodes and between the rectifier diodes and the fast recovery diodes so that there are no long legs between them.

[0048] The manufacturing method of the present invention firstly welds a plurality of rectifier diodes and a plurality of fast recovery diodes into an integrated body according to a set layout, and then packages them in a chip shell, so that the connection is tight and the yield rate is high.

[0049] In some embodiments of the present invention, the fast recovery diode and / or the rectifier diode are formed by a PN junction through a glass passivation process, so that the connection is tighter and more stable.

[0050] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0051] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A diode-integrated rectifier bridge chip, characterized in that: It comprises a chip housing, a rectifier bridge assembly and at least one fast recovery diode, wherein the rectifier bridge assembly and each of the fast recovery diodes are integrated in the chip housing, and a first pin group and a second pin group extending to the outside are provided on the chip housing, the fast recovery diode is connected to the first pin group, and the rectifier bridge assembly is connected to the second pin group; The chip housing comprises an upper shell and a lower shell, wherein the upper shell is connected to the lower shell and forms a packaging cavity inside, the rectifier bridge assembly and the fast recovery diode are arranged in the packaging cavity, and the packaging cavity is filled with sealant; The manufacturing method of the rectifier bridge chip includes: Welding a plurality of rectifier diodes and a plurality of fast recovery diodes into an integrated body according to a set layout, connecting a first pin group to the fast recovery diode, and connecting a second pin group to the rectifier diode; Installing the integrated body in the chip housing, and respectively leading the first pin group and the second pin group out of the chip housing to the outside; The integrated body is encapsulated in the chip housing using a sealant; The fast recovery diode and / or the rectifier diode are formed by a PN junction through a glass passivation process; A light-emitting portion is provided on the fast recovery diode, and a light-transmitting window is provided on the chip housing. The light emitted by the fast recovery diode is set to the outside through the light-transmitting window, or the fast recovery diode is penetrated in the light-transmitting window, and the connection status of the fast recovery diode or whether the fast recovery diode is damaged is judged according to whether light is emitted. A light-transmitting cover is also provided at the light-transmitting window to encapsulate the light-transmitting window.

2. The diode-integrated rectifier bridge chip according to claim 1, characterized in that: The rectifier bridge assembly includes an AC input terminal, a positive output terminal and a negative output terminal. One pole of the fast recovery diode is connected to the positive output terminal, and the other pole of the fast recovery diode is connected to the first pin group.

3. The diode-integrated rectifier bridge chip according to claim 2, characterized in that: The anode of the fast recovery diode is connected to the positive output terminal, and the cathode of the fast recovery diode is connected to the first pin group.

4. The diode-integrated rectifier bridge chip according to claim 2, characterized in that: The cathode of the fast recovery diode is connected to the positive output terminal, and the anode of the fast recovery diode is connected to the first pin group.

5. The diode-integrated rectifier bridge chip according to claim 2, characterized in that: The rectifier bridge assembly includes a rectifier diode D1, a rectifier diode D2, a rectifier diode D3 and a rectifier diode D4, the cathode of the rectifier diode D1 is connected to the anode of the rectifier diode D3 to form one phase of the AC input end, the anode of the rectifier diode D1 is connected to the anode of the rectifier diode D2 to form a negative output end, the cathode of the rectifier diode D2 is connected to the anode of the rectifier diode D4 to form another phase of the AC input end, and the cathode of the rectifier diode D3 is connected to the cathode of the rectifier diode D4 to form a positive output end.

6. A diode-integrated rectifier bridge chip according to any one of claims 2 to 5, characterized in that: The second pin group includes a first AC pin, a second AC pin, a positive pin and a negative pin, one phase of the AC input end is connected to the first AC pin, the other phase of the AC input end is connected to the second AC pin, the positive output end is connected to the positive pin, and the negative output end is connected to the negative pin.

7. A linear rectifier circuit, characterized in that: A rectifier bridge chip with integrated diodes comprising the one described in any one of claims 1 to 6.

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