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 dashboards 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. 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.
Design Considerations and Test Data:
1. System Functionality (User Switch- “SW_on/off”):
a. Releasing the button activates the display by moving the motor forward until it comes to the
open position. The motor will continue moving until it hits an over current limit or limit switch
b. Each time the button is pushed/released, the motor will move the display in the direction that
is opposite from the previous direction.
c. The actuator works in either the current limit mode or can be triggered by limit switches
i. Current Limit Mode:
1. Display will come to stop and trigger the motor controller current limiter
ii. Limit Switch Trigger:
1. When triggered the display comes to a stop; operated by motion
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.