TBOX + VCU

KCU TBOX

An integrated telematics box and vehicle controller module for lightweight EVs and industrial mobility equipment, combining real-time control, connectivity, positioning, and OTA updates.

Positioning

An integrated telematics box and vehicle controller module for lightweight EVs and industrial mobility equipment, combining real-time control, connectivity, positioning, and OTA updates.

One board, two functional domains: TBOX connectivity and VCU control in a single unit.

Simplifies E/E architecture, shortens wiring, and lowers integration cost.

Designed for Taiwan launch with Japan market regulatory compatibility in mind.

Key Advantages

High Integration

Vehicle control, 4G LTE, Wi-Fi, BLE, GNSS, and CAN replace multi-box designs.

Automotive Design

Designed around ISO 16750, CISPR 25, and ISO 11452 environmental and EMC validation.

Real-Time Control

Automotive ARM Cortex-M7 MCU with ASIL-B ready architecture and diagnostic protection.

Remote Operations

MQTT / HTTP(S), GNSS positioning, offline buffering, and OTA for both TBOX and VCU.

System Architecture

VCU Domain

Automotive MCU, SBC power management, CAN, analog/digital/frequency inputs, and high/low-side drivers.

TBOX Domain

LTE Cat.1, Wi-Fi 2.4 GHz, Bluetooth LE, GNSS, Nano SIM, and antenna interfaces.

Power & Protection

8V-36V operating range, reverse polarity protection, transient protection, sleep mode, and load dump tolerance.

Specifications

VCU Core

Processor	Automotive 32-bit ARM Cortex-M7 MCU, 160 MHz, ASIL-B ready
Memory	4 MB Flash / 512 KB SRAM
Communication	CAN 2.0B / CAN-FD x 2 up to 5 Mbps; UART x 1
Software Architecture	AUTOSAR architecture

Vehicle I/O

Sensor Supply	5.0V ±2% x 2, 50 mA per channel, short/overcurrent protection
Analog Input	4 channels, 0-5V, 12-bit, ±1% FSR
Digital / Frequency Input	Digital x 4; Frequency x 2, 1 Hz-20 kHz, ±0.1%
Power Drivers	Low Side PWM x 4; High Side PWM x 2, 3A continuous, 100 Hz-25 kHz

Connectivity

LTE Cat.1	3GPP Release 11, 10 Mbps DL / 5 Mbps UL
Bands	Taiwan B1/B3/B7/B8/B28; Japan B1/B3/B8/B18/B19/B26/B28/B41
Wi-Fi	IEEE 802.11 b/g/n 2.4 GHz, STA + SoftAP, WPA2-PSK / WPA3-SAE
Bluetooth LE	Bluetooth 5.x, GATT Server/Client, Peripheral/Central
GNSS	GPS / GLONASS / QZSS, ≤ 2.5 m CEP, up to 10 Hz

Power, Mechanical & Environment

Input	12V DC nominal, 8V-36V operating range, 42V load dump
Sleep Current	≤ 2 mA @ 12V deep sleep
Housing	PC/ABS
Temperature	-40°C to +85°C
Connector / Weight	Automotive sealed connector, target weight < 300 g

Software Functions

VCU I/O scheduling for ADC, DI, frequency capture, PWM, and sensor supply monitoring.

CAN 2.0B / CAN-FD messaging and watchdog-based diagnostics.

LTE connection management with MQTT / HTTP(S) / TCP / UDP / CoAP.

BLE pairing, Wi-Fi setup interface, GNSS NMEA parsing, and position capture.

Dual OTA for TBOX + VCU, local logging, offline buffering, and resend.

Validation & Certification

ISO 16750-2 / -3 / -4 automotive electrical, mechanical, and climate validation.

CISPR 25 Class 3, ISO 11452-2 / -4, ISO 7637-2 / -3, and ISO 10605 EMC targets.

Wireless certification plan: NCC for Taiwan; TELEC / JATE for Japan.

Quality targets: 10 years / 150,000 km design life, MTBF ≥ 50,000 hours, AEC-Q100 / AEC-Q200 component strategy.

Applications

Fleet Management

Send location, speed, and battery status to the cloud and receive remote commands.

Shared Mobility

BLE unlocking, GNSS positioning, and OTA maintenance in one control and connectivity module.

EV Monitoring

Read BMS and motor controller data over CAN and upload it to a cloud dashboard.

Industrial Vehicles

Track operating hours, location, and remote diagnostics for field equipment.

Need sample evaluation or custom I/O?

The TBOX + VCU module can be tailored by vehicle type, bands, I/O configuration, and regulatory targets.