Context
A leading automotive systems provider required a next-generation Public Charging Station Controller (PCSC) to serve as the intelligent hub for modern EV charging stations. The controller needed to support AC/DC charging, implement emerging global protocols, offer robust connectivity and security, and operate reliably from –40 °C to +70 °C within a compact DIN-rail enclosure.
Eximietas delivered a production-ready PCSC on time and within budget. The controller supports all major standards (IEC 61851-1/-23, SAE J1772, DIN SPEC 70121, ISO 15118) and features a secure, future-proof architecture with dedicated FuSA and TPM hardware. The design positions the customer strongly for the expanding EV charging market, especially for Plug & Charge and V2G-enabled deployments, while achieving target BOM costs for scalable mass production.
- Multi-Core Safety Architecture:
Integrated an i.MX8M Nano CPU with a dedicated NXP S9KEAZN16A safety MCU to guarantee reliable, immediate shutdown during fault events. - Advanced Communication Stacks:
Implemented ISO 15118 over PLC (QCA7005), enabling Plug & Charge authentication and V2G communication. - Security & Transaction Integrity:
Delivered secure RFID-based authentication and OCPP2.0.1 transaction handling over TLS. A hardware TPM (SE050) provided HSM-grade key generation, encryption, and signature verification. - Industrial Interfacing:
Supported CAN (power electronics), RS-232 (energy meter), RS-485 (IMD), and I2C (RFID). Managed provisioning, tariffs, and billing flows over OCPP backend connectivity.
- Shift-left:
Protocol stacks were validated using host-based and emulation setups before hardware integration.
Hardware/Software Integration: Early validation of key interfaces (RS-232/485, CAN, Ethernet) and Linux BSP bring-up on Proto-1 minimized integration risk. - Regulatory Preparation:
P1 hardware passed EMC/Safety pre-compliance, enabling a smooth transition to P2 certification.
Delivery of a high-performance AI SoC ready for production, showcasing the ability to handle full life-cycle ownership (RTL to GDS2 and ATE prep). Demonstrated expertise in integrating cutting-edge technologies like HBM, PCIe, and custom AI silicon. The project successfully established a robust verification and physical design foundation for high-complexity, advanced node designs (Tape out in 2025).
