Our PCB designs.
TOBOR's PLC module uses its own printed circuit board designs. The module is engineered as a part of the charging equipment, with integration requirements reviewed against the proposed charger architecture.
TOBOR · In-house EV charging communication
ISO 15118 PLC module.
Designed in India.
TOBOR designs its own power line communication (PLC) module for CCS2 EV chargers in India. The PCB design and vehicle-communication software are developed in-house by TOBOR's engineering team in Gurugram, Haryana, and the module communicates directly with the vehicle using DIN SPEC 70121, ISO 15118-2 and ISO 15118-20, including Plug & Charge. TOBOR brings this capability together with EV chargers, charging management software and battery energy storage.
DIN SPEC 70121ISO 15118-2 & -20Plug & ChargeOwn PCB & software
Patent application pending for TOBOR's PLC technology.
TOBOR / COMMUNICATION ENGINEERING01 — 03
01 / VEHICLE
Electric vehicle
EV communication controller · EVCC
DIN 70121 · ISO 15118 · Vehicle ↔ charger
02 / CHARGING EQUIPMENT
Charger-side integration · SECCTOBOR PLC module
In-house PCB design + communication software
Charger controller · OCPP connection
03 / NETWORK MANAGEMENT
Operator CSMS
Charger status, sessions and network oversight
Specifications at a glance
Built for CCS2.
Fluent in ISO 15118.
The module sits inside the charger as its supply equipment communication controller and negotiates each charging session directly with the vehicle, using the protocol the vehicle supports.
- Role in the charger
- Supply equipment communication controller (SECC) for CCS2 EV chargers, communicating directly with the vehicle's EVCC
- Vehicle protocols
- DIN SPEC 70121 · ISO 15118-2 · ISO 15118-20
- Authentication
- Plug & Charge (ISO 15118 certificate-based authorisation)
- Physical link
- HomePlug Green PHY power line communication on the control pilot (ISO 15118-3), with SLAC matching
- Hardware and software
- PCB design and vehicle-communication software developed in-house by TOBOR in Gurugram, India
- Charger backend
- A separate interface: the charger's OCPP connection to a CSMS such as TOBOR CSMS
- IP status
- Patent application pending
Built into the charging system
Hardware and software.
Developed together.
The communication layer helps a vehicle and charger exchange the information needed for charging. TOBOR develops the board design and software together, bringing this capability into its wider EV charging platform.
Our communication software.
In-house vehicle-communication software works with the module hardware for ISO 15118-based communication. Hardware and software requirements can be discussed with the same engineering team.
A connected charging platform.
The vehicle interface sits alongside charger controls and operator software. Explore how TOBOR brings the charger, mobile app and CSMS together for drivers and charging operators.
Explore charging software →Understand the interfaces
One charging system.
Two conversations.
Vehicle communication and network management have different jobs. A clear view of both helps charger manufacturers and operators specify the right system.
PLC + ISO 15118
PLC provides the communication link in conductive CCS charging. ISO 15118 defines high-level communication between the vehicle's electric vehicle communication controller (EVCC) and the charger's supply equipment communication controller (SECC).
For this conductive interface, HomePlug Green PHY communication uses the pilot connection. TOBOR's module supports DIN SPEC 70121, ISO 15118-2 and ISO 15118-20, including Plug & Charge; interoperability with specific vehicles is confirmed for each charger configuration.
OCPP + CSMS
The Open Charge Point Protocol connects a charging station to its management system. This is the interface used for operator workflows such as charger status and charging session management.
TOBOR CSMS brings chargers, locations, energy and session insights into an operator workspace. Vehicle communication and this backend connection are reviewed as separate parts of an integrated system.
For charger manufacturers & integrators
Start with your
charging architecture.
Bring your charger design and intended vehicle use case. An integration discussion should establish the module configuration, the communication functions required and how they will be validated together.
Talk to the engineering team ↗- 01
Define the use case.
Target vehicle models, charger type, operating environment and deployment requirements.
- 02
Match the interfaces.
Required protocols (DIN SPEC 70121, ISO 15118-2 or ISO 15118-20), Plug & Charge, charger controls, electrical interfaces and software integration.
- 03
Agree the validation scope.
Applicable technical documentation, conformance requirements and vehicle interoperability checks for the proposed configuration.
PLC module and vehicle communication: your questions
Does TOBOR develop its own ISO 15118 PLC module in India?
Yes. TOBOR designs its power line communication (PLC) module in-house in India. The PCB design and vehicle-communication software are developed by TOBOR's engineering team in Gurugram, Haryana, rather than bought in as a finished module. Patent application pending for TOBOR's PLC technology.
Which protocols does TOBOR's PLC module support?
The module supports DIN SPEC 70121, ISO 15118-2 and ISO 15118-20, including Plug & Charge. Communication runs over HomePlug Green PHY power line communication on the control pilot, as specified for CCS charging in ISO 15118-3, and SLAC matching links the charger to the vehicle that is plugged in.
Can TOBOR's PLC module communicate directly with electric vehicles?
Yes. Fitted in the charger as its supply equipment communication controller (SECC), the module exchanges charging messages directly with the vehicle's electric vehicle communication controller (EVCC) through the charging cable. It uses DIN SPEC 70121 or ISO 15118, depending on what the vehicle supports. Interoperability with specific vehicle models is confirmed during integration testing.
Does TOBOR's PLC module support Plug & Charge?
Yes. Plug & Charge is the ISO 15118 function that lets a vehicle authenticate and authorise charging with digital certificates instead of an RFID card or app. Using it in service also requires a vehicle with Plug & Charge enabled, contract certificates and a charging backend connected to the relevant certificate infrastructure.
Does ISO 15118-20 support mean vehicle-to-grid (V2G)?
Not on its own. ISO 15118-20 includes message sets for bidirectional power transfer, but V2G also needs bidirectional charger power electronics, a compatible vehicle and grid or site integration. V2G requirements are therefore scoped for each project.
What does a PLC module do in an EV charger?
A power line communication module provides a communication link between a compatible electric vehicle and charging equipment. In conductive CCS charging, PLC uses HomePlug Green PHY communication on the pilot connection. ISO 15118 defines high-level communication between the vehicle's EVCC and the charging equipment's SECC.
How is ISO 15118 communication different from OCPP?
ISO 15118 concerns communication between the electric vehicle and charging equipment. OCPP concerns communication between the charging station and its charging station management system (CSMS). A charger can use both interfaces for different purposes: vehicle charging communication and operator network management.
What is the patent status of TOBOR's PLC technology?
TOBOR has filed a patent application for its PLC technology. The application is currently pending, as confirmed by the company on 9 November 2026.
Who should discuss PLC integration with TOBOR?
Charger manufacturers, charging system integrators and teams developing EV charging equipment can discuss the module with TOBOR. Charge point operators can also review how vehicle communication, charger controls and CSMS integration fit their proposed charging system.
What information is needed for an integration review?
Share the charger architecture, target vehicle models, required protocols (DIN SPEC 70121, ISO 15118-2 or ISO 15118-20) and functions such as Plug & Charge, electrical and software interfaces, and validation requirements. TOBOR can discuss the applicable module configuration and supporting technical information for that scope.
Tobor - Green Energy Solutions
Engineering across
the energy ecosystem.
Vehicle communication is one part of TOBOR's work across charging hardware, software and industrial battery energy storage.