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Single-chip current detection power device

A technology of current detection and power devices, which is applied in the field of single-chip current detection power devices, can solve the problem of high cost of external integration technology of separate devices, and achieve the effect of simplifying the circuit structure and reducing manufacturing costs

Active Publication Date: 2014-03-12
张子敏
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] If multiple current detection devices are to be used in parallel, multi-chip packaging technology is required, but the cost of using multi-chip packaging technology and external integration technology of separate devices is high

Method used

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  • Single-chip current detection power device
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Embodiment Construction

[0024] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

[0025] Such as figure 1 with figure 2 As shown, a single-chip current detection power device described in Embodiment 1 of the present invention includes a main power device 1 and at least one current detection device 2 integrated on one chip;

[0026] The main power device 1 is connected in parallel with at least one current detection device 2, and the drain of the main power device 1 is connected to the drain of at least one current detection device 2 as a common input terminal;

[0027] The main power device 1 also includes a gate control terminal and a source output terminal, and each of the current detection devices 2 has its own gate control terminal and source output terminal.

[0028] The on-resistance of ...

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Abstract

The invention relates to a single-chip current detection power device which comprises a main power device and at least one current detection device which are integrated on one chip. The main power device is connected in parallel with the at least one current detection device and a drain electrode end is shared by the main power device and the at least one current detection device and is used as an input end; and the main power device and the at least one current detection device are respectively provided with a grid electrode control end and a source electrode output end. The single-chip current detection power device has the beneficial effect that the single-chip current detection power device implements a structure of connecting one main power device and a plurality of current detection devices in parallel on one single chip, so that the circuit structure is greatly simplified, manufacturing cost is reduced and the patent of a method for improving efficiency of a switching power supply converter by using the current detection power device is easier to implement.

Description

technical field [0001] The invention relates to a single-chip current detection type power device, which belongs to the field of semiconductor devices. Background technique [0002] In addition to the main power device (MainFET), a traditional current-sensing power device can integrate at most one current-sensing device (SensingFET) on a single chip. [0003] If multiple current detection devices are to be used in parallel, a multi-chip packaging technology is required, but the cost of using the multi-chip packaging technology and the external integration technology of separate devices is high. Contents of the invention [0004] The technical problem to be solved by the present invention is that, for the patent "method for improving efficiency of switching power converter by using current detection type power device", although it can be realized technically, the use of multi-chip packaging technology and external integration technology of separate devices The cost is much...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L27/02H01L27/088
Inventor 吴宗宪陈彦豪张子敏
Owner 张子敏
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