STMicroelectronics introduces the next generation door area controller, monolithic integrated power management and emergency fail-safe circuitry

     STMicroelectronics further improves the technical level of the door area controller by introducing a single integrated power management and emergency fault protection circuit of the door area controller product family. In the past, these two functions required the use of external components. The new L99DZ100G/GP Front door controller and L99DZ120 Rear door controller save space while improving reliability and energy efficiency. The controller software is fully compatible, which helps simplify product development and shorten time to market.

     Based on STMicroelectronics' unique advanced BCD8S automotive semiconductor manufacturing technology, this market-unique monolithic solution meets the power management and emergency failure protection requirements of the door area control module. Functional features include A built-in 7.5A maximum rated current half-bridge and upper axle drive. As well as high-speed CAN(HS-CAN) and LIN 2.2a(SAE J2602) interfaces, control modules and protection circuits. The L99DZ100GP adds support for ISO 11898-6 HS-CAN selective wake-up, which maximizes energy saving by keeping the less commonly used electronic control unit (ECU) in the power off state while connecting the CAN bus.

     Both front area controllers integrate MOSFET half-bridge drivers that can drive five DC motors, as well as an external H-bridge. In addition, there are eight LED drivers and two bulb drivers, rear-view mirror defrosting heating grid drivers, automatic anti-glare mirror control modules, integrated regulators to power external circuits such as microcontrollers and sensors, and associated timers, watchdog, reset signal generators and protection circuits. The L99DZ120 is a rear door area controller with similar functional characteristics and includes a power window lift motor controller.

     Other useful features include automatic LED duty cycle compensation to ensure a stable light brightness when the automotive power supply voltage (VS) is unstable. In addition, in the event of an unexpected event such as a short circuit, the innovative thermal cluster management function can individually shut down the relevant fault output, allowing the output unaffected by the fault to continue to function normally, resulting in an extraordinary driving experience for the end user.