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Semiconductor integrated circuit with ESD protection circuit

A technology for ESD protection and integrated circuits, applied in emergency protection circuit devices, semiconductor devices, emergency protection circuit devices for limiting overcurrent/overvoltage, etc., can solve problems such as poor operation of semiconductor integrated circuits, and achieve suppression of poor operation Effect

Inactive Publication Date: 2014-03-26
KK TOSHIBA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Misoperation of the ESD protection circuit may cause malfunction of the semiconductor integrated circuit

Method used

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  • Semiconductor integrated circuit with ESD protection circuit
  • Semiconductor integrated circuit with ESD protection circuit
  • Semiconductor integrated circuit with ESD protection circuit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] Hereinafter, more about a plurality of embodiments, while referring to the appended Figure 1 Side note. In the drawings, the same symbols denote the same or similar parts.

[0015] A semiconductor integrated circuit including the ESD protection circuit according to the embodiment will be described with reference to the drawings. figure 1 It is a schematic block diagram showing the structure of a semiconductor integrated circuit. figure 2 It is a circuit diagram showing the configuration of the power supply circuit.

[0016] Such as figure 1 As shown, the semiconductor integrated circuit 300 is provided with a power supply circuit 100, a drive circuit 200, a power supply line 70, a ground line 71, a terminal 81, a terminal Pvdd1, a terminal Pvdd2, a terminal Pvss1, a terminal Pvss2, and a terminal Psg. The power supply circuit 100 is provided with a level shift circuit 1 , a regulator circuit 2 , and an ESD protection circuit 6 , a power supply line 70 , and a grou...

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PUM

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Abstract

According to an embodiment, a semiconductor integrated circuit includes a first power supply terminal, a second power supply terminal, a regulator circuit, an electrostatic discharge (ESD) protection circuit, and a level shift circuit. A first voltage is applied to the first power supply terminal. A second voltage different from the first voltage is applied to the second power supply terminal. The regulator circuit adjusts the second voltage, and outputs the second voltage adjusted as an output voltage to an output terminal. The ESD protection circuit discharges ESD generated at the output terminal. The level shift circuit level-shifts the magnitude of the first voltage to the magnitude of the second voltage, and outputs a first control signal to electrically separate the regulator circuit from the ESD protection circuit depending on whether or not the first and second voltages are applied.

Description

[0001] Citations for Associated Applications [0002] This application is based on and claims the benefit of priority from prior Japanese Patent Application No. 2012-207564 filed on September 20, 2012, the entire contents of which are hereby incorporated by reference. technical field [0003] The embodiments described here relate to a semiconductor integrated circuit including an ESD protection circuit. Background technique [0004] In order to prevent electrostatic discharge (Electrostatic Discharge ESD) from destroying the semiconductor integrated circuit, an ESD protection circuit is provided on the semiconductor integrated circuit. [0005] The ESD protection circuit protects the semiconductor integrated circuit from ESD when no power supply voltage is applied to the semiconductor integrated circuit. When the power supply voltage is applied to the semiconductor integrated circuit and the semiconductor integrated circuit is driven, the ESD protection circuit is not drive...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03K19/003H01L27/02
CPCH03K19/003H03K19/017509H02M3/00H01L27/0285H01L27/0251H02H9/04H03K17/00H02M2001/325H02M1/325H01L27/04
Inventor 永松彻工藤克哉
Owner KK TOSHIBA
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