12V to 5V power conversion circuit for automotive applications

[gilshultz]

I suspect it will fry when you least expect it. You have no transient or reverse battery protection to start with. Here is some reading that will help/ Most important is the AQ100 series of specifications.

Resources for Automotive Electronics:

1. STMicroelectronics Application Note AN2689:
   This application note provides guidelines on protecting automotive electronics from electrical hazards, focusing on design and component selection. Reading this will greatly enhance your understanding of automotive circuit protection.
   Read AN2689

2. Analog Devices: Automotive Electronics Design:
   This article distills key insights into designing automotive electronics, offering practical advice for engineers.
   Read the article

3. Diodes Incorporated: Transient Voltage Suppression in Automotive:
   Learn about techniques to protect automotive circuits from transient voltage, which is critical for ensuring reliable operation in harsh conditions.
   Read the article

4. AEC-100 Standards Webinar:
   This webinar from Monolithic Power Systems provides a detailed overview of AEC standards, essential for understanding automotive electronics requirements.
   Watch the webinar

5. Understanding Automotive Electronics, An Engineering Perspective by William B. Ribbens:
   This comprehensive book offers an in-depth look into automotive electronics from an engineering perspective, making it an invaluable resource.
   Access the book

6. Check this for OBD ISO9141 Code Meaning & How To Fix OBD negotation initialization procedure https://cdn.standards.iteh.ai/samples/16738/20ff360c25c6462b811ebc0c9256eee0/ISO-9141-2-1994.pdf Then there is GitHub - muki01/OBD2_K-line_Reader: OBD2 K-line Reader (ISO9141 and ISO14230) with microcontrollers like ESP32, Arduino PID codes: OBD-II PIDs - Wikipedia

7. Load Dump and Cranking Protection for Automotiv Backlight LED Power Suppl https://www.ti.com/lit/an/snva681a/snva681a.pd

8. Quality requirements:

AEC Documents

Struggling with K-Line ISO 9141-2 Communication

Success !!! Tried lots of bits of code, but nothing worked. This included the code I'd mentioned above. Changing all the '68 6A F1' to 'C1...' stuff didn't help. So I went back & tried many other OBD code that I'd previously downloaded & played with... Nothing. Then I went to the Examples in Arduino IDE, from iwanders/OBD9141. I selected the 'Soft Serial' version. In 'examples', this was under: OBD9141... ISO9141_rreader_softserial.ino Worked straight off, although I ha…

These resources should provide a strong foundation for anyone involved in automotive electronics design. If you need further help or more resources, feel free to ask!