A 0.13- <i>μ</i> m HV CMOS Fully-Integrated Galvanic Isolator for Gate Drivers With Asynchronous Full-Duplex Communication

This article presents a fully-integrated galvanic isolator for gate drivers with asynchronous full-duplex communication. Amplitude-shift keying (ASK) and load-shift keying (LSK) are deployed to simultaneously transmit data in the two directions of communication. A symmetric data rate of 66.7 Mb/s is achieved in a completely asynchronous communication scenario, without the need for a reference clock. The two transceivers are fabricated in a 0.13-<inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$\mu $</tex-math> </inline-formula>m HV CMOS technology, covering an area of 2.2 mm<sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup>. The data link ensures full-duplex data transfer with a BER below <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$10^{-6}$</tex-math> </inline-formula> and a propagation delay always lower than 20 ns. The power consumption from the low 1.5-V supply amounts to 5.75 mW.