The affluence of living conditions has also led to the development of technology and experience. Cars have slowly evolved from a means of transportation to some human-computer interaction functions, which greatly enhanced the fun and experience of driving.

Ambient lighting mainly brings a kind of visual enjoyment. Under the soft light, driving at night will no longer be boring, and even full of style and fun. What we are showing today is an ambient lighting solution based on Infineon Psoc4, automotive grade MCU and AMS Osram RGBI.

The driving force for development comes from the market. With the improvement of productivity, ambient lights have been equipped on high-end cars and are now popular in most cars, which also provides a large market. Let’s briefly talk about the advantages of this solution and its market;

As a veteran chip developer, Infineon has a complete set of development tools for Psoc:

Psoc creator is a graphical development software. You can select the PIN pin function with one click and set it during the schematic design stage. You can use it to detect whether the IO function settings conflict;

Modus Tool code and project generation software can be used to generate the functions required for your own development without using Psoc creator;

Psoc Programmer is a tool used to burn and read Flash;

I won’t go into details one by one. If you are interested, you can contact Alan.li@sac.com.hk directly; here you can make a specific introduction and provide information on development needs and packaging (of course, Infineon also has mid-range MCUs, such as TVII-B, which is used for body domain control, M4 core and M7 core, TVII-D is used for vehicle display, etc...)

AMS OSRAM; if you have friends who are in the LED or car lighting business, you should be very familiar with this company. Currently, AMS OSRAM has launched a new RGB for car ambient lights. The model is E3731i. This RGBI comes with OTP OVP. Short and other security protection functions, and with color accuracy. As we all know, the light emitted by RGB is not constant, but has a certain curvature as the temperature changes. To address this problem, E3731I has a built-in color accuracy function, supports daisy chain, and a single link can support up to 1000PCS RGBI, which greatly increases the scalability and ductility. For this RGBI, AMS OSRAM has launched many development boards and code drivers, and senior engineers and experts are ready to provide technical guidance and core solution support. More applications are expected to be discovered together with industry experts.

In fact, everyone has deep feelings about the market. More and more car companies are investing more and more energy in car experience. After all, a good driving experience is also an important factor in increasing customers. In the past ten years, low- and mid-range cars may have given up the option of ambient lighting due to cost issues. However, with the improvement of productivity and technology, the cost has been greatly reduced, so the market must have greater demand.

▶Scenario application diagram

▶Product entity diagram

▶Display board photo

▶Solution diagram

Order MCU CY8C4025LQI-S411

▶Car atmosphere light strip

▶Car ambient light panel

▶AMS OSRAM RGBI Block Diagram

Core technology advantages

● As a "veteran" chip manufacturer, Infineon has conducted more performance and safety tests for Psoc. It is currently used in many mass-produced models on the market, which provides evidence of its quality and market recognition.

● Psoc has its own mature development solutions and environment, which greatly reduces the development difficulty for users and shortens the development cycle.

● Infineon Psoc series includes 4000S 4100S...4100S MAX, etc., which provides a large number of choices for model selection and function selection.

● AM SOSRAM RGBI, with its rich link methods and single-link 1000PCS scalability, greatly reduces development costs and converts multi-channel control into a way that one link or one DCU can drive all RGBI in the entire car.

Project specifications

● This solution uses Infineon PSoc&LDO, Sichuan Micro CAN transceiver and AMS OSRAM RGBI and LRC diode MOS, etc.

● Communication methods include CAN I2C SPI and debugging interface SW

● In terms of functions, it includes psoc capsense (Psoc has its own capacitance detection function for touch buttons, liquid detection, kick and other solutions, and supports up to 300pf capacitance detection), PWM LED (ordinary light-emitting diode), SPI RGBI (multi-function, safety detection, daisy chain)

● Multiple power inputs, supporting simultaneous connection of Typec interface and 5525DC interface, or using one of them alone to power the entire solution, which is convenient for debugging and will not cause voltage conflicts.