Patent ID: 7577223
Filing Date: 2009-08-18
Classification: H01L,H02M,H04B,H04L

Abstract:
1. An integrated circuit isolator for providing data transfer of digital data signals across a voltage isolation barrier, comprising: an integrated circuit package having a first plurality of input data pins on one side of the isolation barrier and a corresponding plurality of output data pins on the other side of the isolation boundary; first circuitry associated with the first plurality of input data pins and second circuitry associated with the plurality of output data pins; a communications interface for providing across the voltage isolation barrier a first communications channel for communicating data from the first circuitry to the second circuitry and a second communications channel for communicating synchronization clock data from the first circuitry to the second circuitry, wherein the communications interface comprises a first transformer for providing the first communications channel and a second transformer for providing the second communications channel and the first circuitry having communications circuitry associated therewith for transmitting data to the first transformer and to the second transformer and the second circuitry having communications circuitry for receiving data from the first transformer and the second transformer; and the first circuitry operable to communicate information from input digital data overlapping each other in time and received on two or more of the associated first plurality of input data pins across the first communications channel and to communicate the synchronization clock signal across the second communications channel and the second circuitry operable to receive the communicated data from the first circuitry and reconstruct the data for output on the ones of the plurality of output data pins corresponding to the two or more of the associated plurality of input data pins from which the data was communicated responsive to the synchronization clock signal.