Friday, March 1, 2024

Reference Design For Automotive Brushed Motor Driver for Flip Up Display

By Sharad Bhowmick

This reference design is for a push-to-open/push-to-close motor drive system that enables the actuation of a flip-up display for infotainment systems.

Luxury cars have many special features all around the vehicles. But these cars also have a very clean dashboard and most of these features are hidden under panels. One such feature is a  large display which pops up when required, and hides beneath the panels when not in use. To incorporate such displays in your vehicle, Texas Instruments have added a reference design for a quick pop-up display driver mechanism.

The TIDA-00141 reference design provides a quick setup guide for a push-to-open/push-to-close motor drive system that enables the actuation of a flip-up display for infotainment systems. The main feature of the reference design is that it works without a microcontroller unit (MCU). The reference design can work over a wide range of voltages ranging from of 3.6V to 40V. The Linear/switcher combination circuit enables a low standby current. The reference design can support motors with current up to 1A.

This solution also demonstrates two methods of feedback: one using limit switches and the other taking advantage of the current limit setting on the motor driver. Enabling a quick solution for faster time to market, this design uses all automotive-qualified devices, allows direct battery connection, and requires no software effort. This design incorporates the TPS65320EVM board to create the solution.

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Features of the TIDA-00141:

  • Push to Open/Push to Close Folding Display brushed motor drive solution without an MCU
  • Wide input voltage range of 3.6V to 40V for power IC
  • Linear/Switcher combination circuit enables low standby currents
  • Supports actuator motors with currents up to 1A
  • Small solution size with efficient layout considerations
  • AEC-Q100 qualified devices

This reference design has been tested by Texas Instruments. It comes with required design resources such as Gerber files, schematics, BoM, etc. You can find additional data about the reference design on the company’s website. To read more about this reference design click here.


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