Power Seats

Silicon Labs C8051F5xx automotive microcontrollers are ideal for power seat control where three or more motors are employed to optimize driver seat safety and comfort. The F5xx MCUs, with a built-in 0.5% oscillator over the entire temperature range, allow direct connection to HS CAN and LIN buses without the need for external crystals. Seat control is mostly motor control with mechanical switches. Higher-end seat systems include driver/motor position memory and recall as well as seat surface heaters and cooling systems. Motors in this application are typically brushed. See also, BLDC and sensor-less BLDC motors.

Si82xx Digital Isolators are added to motor control modules to isolate and eliminate unwanted electrical noise from the motors. Having a low noise floor is critical to the occupant infotainment experience and performance of RF modules.


Solutions for Power Seats


Silicon Labs Solutions   Customer Benefits

Automotive Qualified MCUs: AEC-Q100 qualified, with temperature operation up to 125 °C

Small packages, enables full operational specification across the entire automotive voltage and temperature range with no design trade-offs

Reliable, Safe and Effective Isolation: Isolated gate drivers in 0.5 A and 4.0 A peak output current ratings. 2.5 and 5.0 kVrms isolation, AEC-Q100 qualified

Small, single package gate driver solution. Programmable dead time, latch-free level shifting DC working voltages up to 1 kV, 60 nS prop time; more reliable than HVIC drivers

 
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