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The Head-up Display (HUD) reduces dangerous distractions by displaying key information, such as the car’s speed, navigation directions and other alerts, directly in the driver’s line of sight. First adopted for military purposes on fighter jets, HUD is now playing a crucial role inside automotive HMI (Human Machine Interface).

An HUD shows the information in the driver’s field of view, there is no need to look down to the instrument cluster or the secondary display and therefore take the eyes off the road. In the case of a windshield head-up display, drivers are able to see a virtual image as “floating” over the hood at a distance of about 1.5-2 meters.

ST enables your HUD designs with its programmable stepper motor driver, for image adjustment, monitored by a 32-bit control unit, providing a versatile and cost-effective solution. The EVAL-L99SM81V board is available and can drive one bipolar stepper motor in micro-stepping mode.

Automotive head-up display block diagram

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Technical Documentation

    • Description Version Size Action
      AN4501
      Design of a boost LED driver using L99LD01
      1.1
      940.79 KB
      PDF
      AN5083
      L99SM81V Stepper Motor Driver
      2.0
      511.94 KB
      PDF
      AN4501

      Design of a boost LED driver using L99LD01

      AN5083

      L99SM81V Stepper Motor Driver

Publications and Collaterals

    • Description Version Size Action
      Automotive-grade ESD protections for CAN transceivers 1.0
      1.23 MB
      PDF
      L99LD01: automotive LED driver 1.0
      838.74 KB
      PDF
      SOD123Flat AEC-Q101-qualified power Schottky diodes 1.1
      1.39 MB
      PDF

      Automotive-grade ESD protections for CAN transceivers

      L99LD01: automotive LED driver

      SOD123Flat AEC-Q101-qualified power Schottky diodes

    • Description Version Size Action
      Automotive-grade protection devices and rectifiers 1.0
      825.43 KB
      PDF
      Power amplifiers and voltage regulators
      750.29 KB
      PDF

      Automotive-grade protection devices and rectifiers

      Power amplifiers and voltage regulators

    • Description Version Size Action
      SPC58 C-line 1.0
      933.22 KB
      PDF

      SPC58 C-line

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Diodes (Power Schottky & FERD) Smart Selector

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