Transmitting and receiving digital and analog signals across an isolator

摘要

Various embodiments of systems for transmitting and receiving digital and Various embodiments of systems for transmitting and receiving digital and/or analog signals across a single isolator, solid state lighting systems, or DC/DC converter feedback regulation control systems are disclosed. In one embodiment, the digital and analog signals may be modulated into a frequency modulated signal, and each pulse of the frequency modulated signal may be further encoded into a major pulse and a minor pulse. At least some of the circuits, systems and methods disclosed herein may be implemented using conventional CMOS design and manufacturing techniques and processes to provide, for example, a single integrated circuit or ASIC.

主权项

1. An isolation system, comprising:
a modulator, wherein the modulator is configured to modulate at least one analog signal corresponding to logic state of at least one digital signal to form a frequency-modulated signal; a transmitter electrically coupled to the modulator; a signal isolator electrically coupled to the transmitter, wherein the transmitter is configured to transmit the frequency-modulated signal across the signal isolator; a receiver electrically coupled to the signal isolator configured to detect and reproduce the frequency-modulated signal into a reproduced frequency-modulated signal; a frequency discriminator electrically coupled to the receiver configured to decode the reproduced frequency-modulated signal and configured to reconstruct the at least one digital signal; and a filtering circuit electrically coupled to the receiver configured to filter the reproduced frequency-modulated signal and to reconstruct the at least one analog signal, wherein the signal isolator is configured to electrically isolate the transmitter and the receiver.