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Car-door driver incorporates window control

Posted: 31 Jan 2012 ?? ?Print Version ?Bookmark and Share

Keywords:controller IC? car-door? electromagnetic compatibility?

STMicroelectronics N.V. has rolled what it touts as the market's first multifunctional door-zone driver with an integrated electric-window control. According to the company, the L99DZ80 reduces bill-of-material costs by removing the need for mechanical relays in car-window control.

The company said the device eliminates expensive electromagnetic compatibility (EMC) countermeasures, associated with the existing solutions, while enabling users to enjoy a smoother and quieter car-window operation. ST's door-zone driver supports adjustable window speeds related to the position of the windowsoft start and shutdownand reduces noise levels with the removal of the relay as well, stated ST.


L99DZ80 embeds an SPI-programmable slew-rate control IP.

ST's�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 (PWM)-driven electric-window applications. Other 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 electrochromic (dimmable) mirror glasses.

The L99DZ80 is available in volumes.

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