CAN/CAN FD series

Application Market: 

Energy Storage BMS Control

The hardware components of a Battery Management System (BMS) include the main control board, subordinate boards, and communication interfaces. The main control board serves as the core of the entire BMS system, responsible for data processing, executing control strategies, and communicating with other devices. Subordinate boards typically consist of battery state monitoring modules, balancing management modules, thermal management modules, etc., each handling specific management tasks. The primary communication interface is often based on the CAN bus, facilitating information exchange between the BMS and other devices or systems. 

Application Overview: 

A gateway communicates with the battery management unit via a CAN FD (Flexible Data Rate) chip.

The battery management unit controls individual batteries through the CAN bus.

SIT1043Q is an interface chip designed for communication between CAN protocol controllers and the physical bus. It supports a 5 Mbps flexible data rate (Flexible Data-Rate) and enables differential signal transmission between the bus and CAN protocol controllers. The SIT1043Q bus port withstands voltages from -58V to +58V, while the receiver’s common-mode input voltage ranges from -30V to +30V. It is suitable for both 12V and 24V application systems. The SIT1043Q operates on multiple power supplies, offering various system protection and diagnostic features to enhance device and CAN stability. Additionally, the SIT1043Q provides five operating modes: normal, silent, standby, sleep-wait, and sleep. In low-power mode, it supports local and remote wake-up, significantly conserving power in CAN bus applications.

Key Features: 

• Fully compliant with the ISO 11898-2:2016 standard.

• AEC-Q100 certified.

• Low-power sleep and standby modes.

• Remote and local wake-up capabilities.

• Bus port withstands ±58V.

• Receiver common-mode input voltage: ±30V.

• IO ports compatible with 3.3V/5V MCUs.

• Driver (TXD) with dominant timeout function.

• Undervoltage protection on VBAT, VCC, and VIO power pins.

• High-speed CAN supporting 5Mbps CAN with Flexible DataRate.

• Sleep mode INH output pin with power disable function.

• Operating temperature range: -40°C to 150°C, with built-in over-temperature protection.

• Typical loop delay from TXD to RXD: approximately 100ns.

• High immunity to electromagnetic interference.

• Non-interference with the bus when nodes are not powered.

• Includes a stable common-mode output pin SPLIT.

• Available in SOP14 and DFN4.5×3.0-14 packages.

SIT1042AQ: An interface chip used between the CAN protocol controller and the physical bus, SIT1042AQ finds applications in fields such as in-vehicle and industrial control. It supports a 5 Mbps flexible data rate (CAN FD) and enables differential signal transmission between the bus and the CAN protocol controller. SIT1042AQ is an upgraded version of the SIT1042Q, with improved bus signal symmetry and lower electromagnetic radiation performance. Additionally, it is fully compatible with the SIT1042Q. 

Key Features: 

• Fully compliant with the ISO 11898 standard.

• AEC-Q100 certified.

• Built-in over-temperature protection.

• Bus port withstands voltages from ±58V.

• Driver (TXD) with dominant timeout function.

• Standby bus (BUS) with dominant timeout function.

• Low-power standby mode with wake-up capability.

• SIT1042AQT/3 I/O voltage range supports 3.3V and 5V MCUs.

• Undervoltage protection on VCC and VIO power pins.

• High-speed CAN, supporting 5Mbps CAN FD flexible data rate.

• Typical loop delay from TXD to RXD is less than 100ns.

• High immunity to electromagnetic interference.

• Non-interference with the bus when nodes are not powered.

• Available in DFN3*3-8 package, compact and pinless.

  

SIT1051AQ is an interface chip used between the CAN protocol controller and the physical bus. It finds applications in fields such as in-vehicle and industrial control. Supporting a 5 Mbps flexible data rate (CAN FD), it enables differential signal transmission between the bus and the CAN protocol controller. SIT1051AQ is an upgraded version of the SIT1051Q, improving bus signal symmetry and offering lower electromagnetic radiation performance. Additionally, it is fully compatible with the SIT1051Q. 

Key Features: 

• Fully compliant with the ISO 11898 standard.

• AEC-Q100 certified.

• Built-in over-temperature protection.

• Bus port withstands voltages from ±58V.

• Driver (TXD) with dominant timeout function.

• Silent receive mode.

• SIT1051AQT/E features low-power shutdown mode.

• SIT1051AQT/3 I/O voltage range supports 3.3V and 5V MCUs.

• Undervoltage protection on VCC and VIO power pins.

• High-speed CAN, supporting 5Mbps CAN FD flexible data rate.

• Typical loop delay from TXD to RXD is less than 100ns.

• High immunity to electromagnetic interference.

• Non-interference with the bus when nodes are not powered.

• Available in DFN3*3-8 package, compact and pinless.