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ST unveils first car door driver with integrated window control

STMicroelectronics unveils first car door driver with integrated window control

STMicroelectronics has introduced the market's first multi-functional door zone driver with an integrated electric window control.

According to ST, the innovative L99DZ80 chip reduces BOM costs and offers 'new levels of passenger comfort'. It has already been selected for adoption at an unnamed leading German car manufacturer.

The door actuator driver removes the need for mechanical relays in car window control and supports adjustable window speeds related to the position of the window – soft start and shutdown. The removal of the relay also reduces noise levels.

The L99DZ80 embeds an SPI programmable slew rate control IP that can drive four external mosfets in a half bridge configuration dedicated to pulse width mode driven electric window applications. Additional features include six bridges for double door lock control, mirror fold and mirror axis control, together with a high side driver for mirror defroster, bulbs and leds. The device also integrates a control block with an external MOS transistor for charging and discharging of dimmable mirror glasses.

Chris Shaw

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