This reference design for a low-cost anti-pinch automotive window lift is based on the S12VR64, the first single-chip member of Freescale's S12 MagniV mixed-signal MCU family. The reference design includes an anti-pinch feature implemented with hall sensors, current sensing and ripple counting. It also includes a PC GUI to interact with the module. The S12VR64 MCU combines the different devices required for relay-driven electric motor control, including the LIN physical layers, voltage regulators and low- and high-side drivers, into one device. This level of integration is accomplished via the LL18UHV technology, which uses Freescale's proven, low-leakage 0.18 micron (LL18) fabrication process to integrate 40V analog, non-volatile memory (NVM) and digital logic on a single piece of silicon.
SOURCE: Automotive Freescale