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Two-piece synchronous rectification diode

A technology of synchronous rectification and diodes, applied in the direction of electrical components, electric solid devices, circuits, etc., to achieve the effects of reducing the size of components, improving bonding force, and improving heat dissipation

Active Publication Date: 2018-07-13
山东芯诺电子科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the deficiencies of the prior art, the present invention proposes a two-chip synchronous rectification diode, which optimizes the structure, integrates the available area of ​​the PAD, and eliminates structural defects that are likely to cause defects

Method used

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  • Two-piece synchronous rectification diode
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  • Two-piece synchronous rectification diode

Examples

Experimental program
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Effect test

Embodiment 1

[0042] Such as figure 1 As shown, the two-piece synchronous rectification diode with an open gap includes a first frame 1, a MOSFET chip 2, a control IC chip 3, a second frame 4, and a built-in capacitor 5. The second frame has two external leads The second frame is provided with an open gap, the control IC chip is fixed on the second frame, the external terminal of the built-in capacitor is connected to the second frame, and the internal terminal is located at the open gap; the first frame has an external The MOSFET chip is fixed on the first frame; the MOSFET chip, the control IC chip, and the built-in capacitor are connected through bonding wires.

[0043] The built-in capacitors are MLCC capacitors. The first frame and the second frame are copper alloy frames. The first frame 1, the MOSFET chip 2, the control IC chip 3, the second frame 4, and the built-in capacitor 5 are welded and formed by bonding wires, and then packaged in a plastic package to form an integral synch...

Embodiment 2

[0056] Such as image 3 As shown, the two-piece synchronous rectification diode with a closed gap includes a first frame 1, a MOSFET chip 2, a control IC chip 3, a second frame 4, and a built-in capacitor 5. The second frame has two external leads There is a closed gap on the second frame, the control IC chip is fixed on the second frame, the external terminal of the built-in capacitor is connected to the second frame, and the internal terminal is located at the closed gap; the first frame has an external The MOSFET chip is fixed on the first frame; the MOSFET chip, the control IC chip, and the built-in capacitor are connected through bonding wires.

[0057] The built-in capacitors are MLCC capacitors. The first frame and the second frame are copper alloy frames. The first frame 1, the MOSFET chip 2, the control IC chip 3, the second frame 4, and the built-in capacitor 5 are welded and formed by bonding wires, and then packaged in a plastic package to form an integral synchr...

Embodiment 3

[0069] Such as Figure 5 As shown, the two-piece synchronous rectification diode with insulating and heat-conducting coating includes a first frame 1, a MOSFET chip 2, a control IC chip 3, a second frame 4, and a built-in capacitor 5. The second frame has two external Pin, the control IC chip is fixed on the second frame, the external terminal of the built-in capacitor is connected to the second frame, and an insulating and heat-conducting coating 6 is provided between the internal terminal and the second frame; the first frame 1 is provided with an external The MOSFET chip is fixed on the first frame; the MOSFET chip, the control IC chip, and the built-in capacitor are connected through bonding wires.

[0070] The built-in capacitors are MLCC capacitors. The first frame and the second frame are copper alloy frames. The first frame 1, the MOSFET chip 2, the control IC chip 3, the second frame 4, and the built-in capacitor 5 are welded and formed by bonding wires, and then pa...

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Abstract

The invention discloses a two-piece synchronous rectification diode. The two-piece synchronous rectification diode comprises a first framework, a metal-oxide-semiconductor field-effect transistor (MOSFET) chip, a control IC chip, a second framework and a built-in capacitor, wherein the second framework is provided with two external pins, the control IC chip is fixed on the second framework, the second framework is connected with an external wiring end of the built-in capacitor, the first framework is provided with an external pin, the MOSFET chip is fixed on the first framework, and the MOSFETchip and the control IC chip, the control chip and an internal wiring end of the built-in capacitor, the MOSFET chip and the second framework and the control chip and the first framework are connected by bonding wires. By the two-piece synchronous rectification diode, the structure is optimized, the available area of a PAD is integrated, and unfavorable structure defect easy to cause is removed.

Description

technical field [0001] The invention relates to the field of chip production, in particular to a two-chip synchronous rectification diode. Background technique [0002] The structural principle of the Schottky rectifier is very different from that of the PN junction rectifier. Usually, the PN junction rectifier is called a junction rectifier, and the metal-semiconductor rectifier is called a Schottky rectifier. The existing rectification element Schottky diode has the problem of large rectification loss and low conversion efficiency. [0003] Synchronous rectification diode is composed of control IC, power MOSFET and its auxiliary circuit, so as to realize the new technology of low loss rectification. The existing synchronous rectification structural components are clumsy and inconvenient, large in size, difficult to dissipate heat, and thin and repetitive pins, which cause certain troubles for installation and use. Contents of the invention [0004] In order to solve th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L25/03H01L23/367H01L23/495
CPCH01L23/49575H01L25/03H01L23/367H01L2224/48137H01L2224/48195H01L2224/49175
Inventor 李明芬吴南吕敏李联勋马东平王鹏徐明星
Owner 山东芯诺电子科技股份有限公司
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