A semiconductor network is interposed between first and second multiple-port interfaces each having high-voltage, intermediate-voltage and ground ports to form a switch assembly. The assembly includes a primary switch circuit, a support network, internal and external-port circuits and internal and external-port...http://www.google.com/patents/US7584370?utm_source=gb-gplus-sharePatent US7584370 - Circuits, switch assemblies, and methods for power management in an interface that maintains respective voltage differences between terminals of semiconductor devices in open and close switch states and over a range of voltages
