Infineon’s cost-effective SOI technology for driver ICs helps major appliance designers meet stringent energy and reliability parameters.
Advanced motor control translates into a more sophisticated, energy-efficient, reliable, quiet and compact machine. A critical gateway between the control system and the power system is the driver IC. The driver IC takes a logic signal output from a microcontroller chip in the control system, and provides the appropriate current and voltage to turn power devices on and off.
The region around a motor in a major appliance is one of extreme temperatures and electrical and electromagnetic noise. One of the biggest concerns for the electronics is latch-up, which essentially occurs when random voltage spikes – especially negative ones – create unintended shorts of pn-junctions in the driver circuits. Therefore, the driver ICs have to be extremely robust…yet very cost-competitive.
Product: “EiceDRIVER™” driver ICs for major appliances, which bridge the low-voltage world of control systems and the high-voltage world of the motor.
Challenge: develop a latch-up-immune IC platform technology that can beat cheap, pn-isolated technologies in price/performance.
• eliminates latch-up because all devices are dielectrically isolated from each other
• minimizes current leakage thereby saving energy at high operating temperatures
• enables very compact design, taking 40% less space than traditional pn-isolation technologies.
SOI Advantage: cost optimized technology flow and the very robust dielectric isolation leads to very competitive driver IC products for harsh environments.