Active High Power Conversion Efficiency Rectifier With Built-In Dual-Mode Back Telemetry in Standard CMOS Technology

Area of Science:

• Electrical Engineering
• Microelectronic Devices

Background:

• Active rectifiers are crucial for efficient power conversion in electronic systems.
• Standard CMOS technology offers a viable platform for integrated circuit development.

Purpose of the Study:

• To present an active rectifier with high power conversion efficiency (PCE).
• To incorporate built-in back telemetry for enhanced functionality in various applications.

Main Methods:

• Implementation in a 0.5-μm 5V standard CMOS technology.
• Utilizing active synchronous rectification techniques.
• Developing two modes of built-in back telemetry: short- and open-circuit.

Main Results:

• Achieved a PCE greater than 80% in the 0.125-1 MHz frequency range.
• Demonstrated the utility of complementary back telemetry for implantable microelectronic devices (IMD), wireless sensors, and RFID.

Conclusions:

• The developed active rectifier offers high PCE and advanced telemetry features.
• The integrated telemetry can reduce silicon area, increase data rates, and improve performance in load shift keying (LSK) applications.