12-09-2017, 11:07 AM
A key requirement for industrial and instrumentation (I & I) applications, telecommunications and medical applications is a reliable interface for transmitting data. The Inter-Integrated Circuit (I2C) bus is a 2-wire bi-directional bus that is used for low-speed and short-distance communication between integrated circuits. Developed by Philips in the early 1980s for ICs on a single plate, the use of I2C continues to increase. The power management bus (PMBus), a relatively slow 2-wire communications protocol based on I2C, is aimed at the digital management of power supplies. The PMBus protocol defines a standard digital power management protocol that facilitates communication with a power converter or other connected device.
Figure 1 shows how an insulation barrier galvanically isolates the I2C interface from each system connected to it, allowing the digital data to move between two points but prevent ground current flow; this reduces the distortion of the signal and the errors eliminating the noise that is coupled to the communications bus.
Figure 1 shows how an insulation barrier galvanically isolates the I2C interface from each system connected to it, allowing the digital data to move between two points but prevent ground current flow; this reduces the distortion of the signal and the errors eliminating the noise that is coupled to the communications bus.