On-Chip Transformer Based Isolation Driver Chip using PCB Technology

Isolation driver chips are widely used for reliable communication between low and high voltage levels, with on-chip transformers serving as the core devices for magnetic isolation. In this study, we designed, simulated, and tested an on-chip transformer that can be manufactured using PCB technology. This transformer uses copper as the conductive material and FR4 as the dielectric, theoretically achieving an insulation level of up to 3KV, making it suitable for mass production and showing significant industrial application potential. Based on this on-chip transformer, we designed corresponding encoding and decoding circuits and implemented the circuit structure through System in Package (SIP). Simulation results indicate that this isolation driver chip can reliably support communication across different voltage levels.