SECC/HMI Reference Design for EV Chargers

As the electric vehicle (EV) revolution continues to gain momentum worldwide, the role of SECC (Supply Equipment Communication Controller) has become crucial for ensuring secure communications and smooth charging operations. The SECC acts as a central communication module for integration with charging infrastructure via standards & protocols, secure wired & wireless connectivity, and high-voltage safety measures for reliable charging operations.

eInfochips SECC HMI Reference Design facilitates communication between EVs and charging infrastructure for safe & efficient charging operations. eInfochips SECC features a large 10” LCD display, Speaker & LED notifications, CAN/Ethernet/Wi-Fi connectivity, and NFC for secure authentication.

Key Features

Multicore ARM Cortex Processor

10” LCD Display (1000 NITS)

OCPP 1.6 and ISO15118 Support

Support of up to 2 Charging Guns

CCS1 / CCS2 Charging Communication Standards

RFID/NFC Support (ISO14443/ ISO15693)

Isolated CAN Communication with Power Unit

LED Indications (Power, Fault, Charging)

DC+ & DC- Charging Contacts Temperature Sensing Support

SECC At-a-Glance

Technical Specifications

Specifications
Description
Application Processor
NXP i.Mx93 SOM (EIC-i.MX93-210)
Charger and Vehicle communication
Power Line Communication (PLC) with Home Plug GreenPHY
LCD Display
TFT LCD display, 10” 1000nits
Charger and CSMS Communication
OCPP 1.6J
Charger and Vehicle Communication Compliance
ISO15118, IEC 61851-23, -24
Charging Interface
CCS1 / CCS2
Charger Network connectivity
Wi-Fi (802.11 a/b/n/ac), BT/BLE5, 4G/LTE, 1X Gigabit Ethernet RJ45 Port
NFC
Yes (ISO14443/ ISO15693)
Firmware over the Air Update (FOTA)
Yes
CAN Bus
2X CAN Ports (Isolated Daisy chain)
Front Panel Status LEDs
Mains available, Charging Status and System Error
Audio
Dual 3W Speakers
Emergency Stop
Yes
Input Supply
90-240VAC and 12VDC inputs
Operating Temperature*
-30°C to +60°C
Target Certification*
CE, FCC, UL, IEC, RoHS, REACH
Target Ingress Protection*
IP54 Indoor/Outdoor Usage
Relative Humidity
<95%, non-condensing
Dimensions (LxWxH)
520x270x130mm
Weight
2.5 kg
* Targeted

IP / Frameworks

eInfochips DC Fast Charger Reference Design

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