ESD power clamp using a low-voltage transistor to clamp a high-voltage supply in a mixed-voltage chip

• Main Author: KWONG KWOK KUEN (DAVID)
• Format: Patent
• Language: English
• Published: 04.02.2014
• Subjects: BASIC ELECTRIC ELEMENTS; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS; GENERATION; RESISTORS

An electro-static-discharge (ESD) protection circuit is a power clamp between a high-voltage power supply VDDH and a ground. The power clamp protects high-voltage transistors in a first core and low-voltage transistors in a second core using a low-voltage clamp transistor. The low-voltage transistor...