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A power integrated circuit

An integrated circuit and power technology, applied in circuits, electrical components, electrical solid devices, etc., can solve the problems of inconvenient application, narrow operating voltage range, complex external structure, etc., and achieve simple assembly, wide operating voltage, and convenient use. Effect

Active Publication Date: 2016-12-14
WUXI CHINA RESOURCES HUAJING MICROELECTRONICS
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  • Claims
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Problems solved by technology

[0004] Therefore, the constant current diodes in the prior art have the characteristics of forward constant current and reverse conduction, so the operating voltage range is relatively narrow; and, generally, the constant current diodes are all 3-terminal pins or 3-terminal pins The above IC, therefore, has a relatively complex external structure, which is not convenient for applications where the two-terminal pins are applicable.

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Embodiment Construction

[0026] The following descriptions of some of the many possible embodiments of the present invention are intended to provide a basic understanding of the invention, and are not intended to identify key or critical elements of the invention or to limit the scope of protection. It is easy to understand that, according to the technical solutions of the present invention, without changing the essential spirit of the present invention, those of ordinary skill in the art can propose other alternative implementation manners. Therefore, the following specific embodiments and accompanying drawings are only exemplary descriptions of the technical solutions of the present invention, and should not be regarded as all of the present invention or as limitations or restrictions on the technical solutions of the present invention.

[0027] In the drawings, the thicknesses of layers and regions are exaggerated for clarity, and shape features such as rounding due to etching are not illustrated in...

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Abstract

The present invention relates to the technical field of constant current diode power devices. Provided is a power integrated circuit (power IC). The power IC comprises: a constant diode (220), a voltage withstand diode (210) connected in reverse-direction series with the constant diode (220), and an anode pin and a cathode pin. The anode pin is coupled to the voltage withstand diode (210). The power IC is characterized by outputting a constant current in a forward direction and stopping outputting in a reverse direction, having a broad working voltage band. Meanwhile, only two pins are required, resulting in simple assembly and convenient use.

Description

technical field [0001] The invention belongs to the technical field of constant current diode power devices, and relates to a power integrated circuit (IC) with forward constant current and reverse cut-off. Background technique [0002] Constant current diode power devices have the characteristics of outputting constant current in a wide voltage range and have high dynamic impedance, which have been widely used. [0003] figure 1 Shown is a schematic diagram of the output characteristic curve of the existing constant current diode power device. The output current of the constant current diode remains substantially constant under the condition of forward voltage bias, and when the forward voltage is greater than V B is struck; the constant current diode has a forward conduction characteristic similar to a PN junction under reverse voltage bias, but no turn-off characteristic. [0004] Therefore, the constant current diode in the prior art has the characteristics of forward...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L27/02H01L29/861
CPCH01L29/861H01L27/0814
Inventor 魏峰唐红祥张新计建新
Owner WUXI CHINA RESOURCES HUAJING MICROELECTRONICS
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