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Texas Instruments TCAN245x-Q1 SIC CAN FD System Basis Chip (SBC)

Texas Instruments TCAN245x-Q1 Signal Improvement Capable (SIC) CAN FD System Basis Chip (SBC) provides a control area network flexible data rate capable (CAN FD) transceiver that meets the physical layer requirements of ISO-11898:2-2024, including the SIC specification. The CAN FD transceiver supports data rates up to 8Mbps. The TCAN245x-Q1 integrates a buck regulator (VCC1) that can output either 3.3V or 5V, and provides up to 1A output current. The buck regulator integrates spread spectrum modulation to improve EMC performance. VCC2 LDO provides 5V output for loads up to 200mA. TCAN2451-Q1 supports partial networking by recognizing a selective wakeup frame (WUF).

The Texas Instruments TCAN245x-Q1 includes LIMP, four local wake inputs, and four high-side switches. The high side switch can be on/off, 10-bit PWM, or timer-controlled. Using the GFO pin, controlling an external CAN FD, LIN transceiver, CAN SBC, or LIN SBC is possible. The WAKE pins can be configured for static and cyclic sensing (with HSS4 pin), and pulse-based for waking up. These devices provide EEPROM to store specific device configuration information, thus avoiding extensive reprogramming after power fluctuations.

Features

  • AEC-Q100 qualified for automotive applications
  • Meets the requirements of ISO 11898-2:2024 for CAN-FD and CAN-FD Signal Improvement Capability (SIC)
  • Integrated 3.3V or 5V buck regulator (VCC1) with 1A output capability
    • Pin-selectable output (3.3V or 5V) based on VSEL pin connection
    • Switching frequency options from 1.8MHz to 2.4MHz to enable a smaller on-board inductor
    • Integrated spread spectrum modulation to improve EMC performance
  • Multiple methods to wake up from sleep mode
    • CAN bus wakeup pattern (WUP)
    • Local wake up (LWU) via four WAKE pins
      • Cyclic sensing wakeup using a high-side switch (HSS4)
    • Selective wake/partial networking capability, TCAN2451-Q1 only
    • Digital wakeup using SW pin
  • 5V LDO regulator (VCC2) supporting up to 200mA with off-board capability and short-to-battery protection
  • WAKE pins configurable as ID pins to identify the ECU location in the vehicle
  • Four high-side switches to support multiple loads and allow for cyclic sensing wake
  • Fail-safe output pin (LIMP) that can be optionally used as a low-side switch
  • ±58V bus fault protection
  • Advanced CAN bus fault diagnostics
  • Timeout, window, and Q&A watchdog support
  • Access to EEPROM to save device configuration
  • Available in a 32-pin leadless package with a wettable flank for improved automated optical inspection (AOI) capability

Applications

  • Body electronics and lighting
  • Car access and security
  • Hybrid, electric, and powertrain systems
  • Industrial transportation

Typical Application Diagram

Application Circuit Diagram - Texas Instruments TCAN245x-Q1 SIC CAN FD System Basis Chip (SBC)
Publicado: 2025-08-20 | Actualizado: 2025-08-26