Telematics and Connected Vehicle
Connect radio paths, host compute, and vehicle-network interfaces in the telematics unit.
Telematics Connectivity and Vehicle Interfaces
A telematics control unit combines wireless communication with vehicle data and embedded processing. Depending on the design, its component path can include cellular or Wi-Fi connectivity, GNSS reception, antenna interfaces, a host processor, vehicle-network links, and backup or always-on power.
Separate the radio and antenna paths from the vehicle-network and power paths when defining the BOM. Check supported bands and interfaces, antenna and receive-chain needs, modem peak and standby loads, wake sources, and backup-power requirements specified for the vehicle program.
Component Requirements
Typical functions, devices, and parameters in Telematics & Connected Vehicle.
| System function | Typical devices | Key parameters | Browse |
|---|---|---|---|
| Cellular and GNSS paths Provides wide-area communication and positioning through separate radio functions. | Cellular modems, GNSS receivers, RF front-end devices | Band support, antenna path, receive-chain needs | View category |
| Host compute and gateway Processes modem, positioning, diagnostic, and vehicle-network data. | Automotive processors, MCUs, Ethernet PHYs | Vehicle interfaces, memory, wake sources | View category |
| Module power and backup Supplies radio, processor, always-on, and program-required backup rails. | PMICs, buck-boost converters, supervisors, chargers | Input profile, peak load, standby current | View category |
Design & Selection Considerations
Radio and antenna path
Match cellular bands, GNSS reception, antenna interfaces, filters, and any coexistence constraints in the module design.
Vehicle and cloud interfaces
Trace the path from the host processor to CAN or Ethernet and to the wireless subsystem, including required wake sources.
Active, standby, and backup power
Budget radio peaks and parked-state loads separately; include backup power only where the vehicle requirements call for it.
Frequently Asked Questions
They serve different radio functions and may use separate antennas, filtering, and receive or transmit chains. Map the supported bands, antenna connections, coexistence needs, and host interfaces for the actual modem and GNSS devices.
Include modem activity and transmit peaks, GNSS and host processing, always-on wake circuits, and backup power if the vehicle design requires it. Check startup and transient conditions as well as parked-state current against the module's specified behavior.