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Chip shortage, domestic replacement of CAN transceivers accelerates!

Release on : Oct 15, 2021

Chip shortage, domestic replacement of CAN transceivers accelerates!
CAN domestic replacement
Electronic enthusiasts network reported (text / Li Cheng) Affected by the epidemic and other factors, chip supply is still tight this year, which is a rare development opportunity for domestic chip companies. Now domestic companies are also actively deploying in different fields to achieve new breakthroughs, and the same is true in the automotive field. According to public data, more than 90% of China's automotive-grade chips rely on foreign imports, and domestically-made automotive-grade chips account for a relatively low proportion. Take automotive CAN chips as an example. At present, the automotive CAN chip market is mainly dominated by well-known foreign chip companies such as TI, NXP, and Infineon. Compared with foreign chips, domestic substitute chips have the advantages of high cost performance and stable shipments, which will help to expand the market and seize market share.

Focusing on the field of domestic CAN transceivers, due to technical barriers, the domestic CAN transceiver market was monopolized by foreign products for a long time, unable to achieve automatic controllability, and automobile production capacity was constrained by others. In the past two years, Chuanshi Microelectronics, Xinlitech, and Zhiyuan Electronics have successively launched CAN transceiver chips to meet market demand.

ZHIYUAN Electronics CAN FD Transceiver

Zhiyuan Electronics is committed to the research and development of industrial Internet technology and has rich experience in bus technology. On September 13th, the SM series fully isolated CAN transceiver was released. This transceiver combines the bus isolation technology and SiP process that ZHIYUAN Electronics has cultivated for 20 years. It has the characteristics of excellent performance and high integration.


Source: Zhiyuan Electronics official website

SM1500 CAN transceiver is a fully isolated CAN transceiver that integrates CAN transceiver circuit, power supply isolation, and signal isolation newly launched by ZHIYUAN Electronics. SM1500 CAN transceiver supports CAN FD protocol, realizes the coverage of output rate of 40k~5Mbps, and can connect with 110 nodes at the same time to improve the bus coverage. This chip has the characteristics of strong voltage compatibility, can be directly connected to 3.3V or 5V MCU, and the isolation withstand voltage is as high as 3500V. When the CAN transceiver is in the working state, other nodes that are not powered on will not affect the bus, and it also has the characteristics of low electromagnetic radiation and increasing anti-electromagnetic interference. The temperature resistance of SM1500 is between -40℃~125℃, and it has a wide operating temperature range. It can be used in many fields such as automotive electronics, industrial control, and smart home. SM1500 adopts 12.45mm*9.85mm*3.00mm DFN20 package.

Sinlite CAN FD Transceiver

Xinlite is an enterprise focusing on chip development in the fields of automotive electronics and industrial IoT. At present, 16 CAN interface chips have been launched, covering products of both CAN and CAN FD protocols. The data transmission rate is between 1 Mbps and 5 Mbps. Among them, there are three models that support the CAN FD protocol.


Source: Xinlite official website

SIT1044 is a CAN interface chip that supports the CAN FD protocol with a maximum data transmission rate of 5Mbps. It mainly provides interfaces for CAN controllers and buses, and transmits differential signals. It can be used in automotive and industrial control fields. SIT1044 can be mixed with an MCU with an output voltage of 3.3V or 5V, with high voltage adaptability, and the bus fault protection voltage is 40V. It has good passive characteristics and EMI characteristics when it is not powered on, and has strong anti-interference ability. SIT1044 has two working modes. The switch between high-speed mode and standby mode can be realized by configuring the STB pin. The device integrates over-temperature protection and under-voltage protection functions to ensure the stability of the circuit. SIT1044 has a temperature resistance between -40°C and 150°C. It is packaged with HVSON8 / DFN3*3-8 built-in pins, which is beneficial to reduce the proportion of PCB space and facilitate device layout.

Chuanshi Microelectronics CAN FD Transceiver

Chuanshi Microelectronics is a technology company focusing on the design and development of analog chips. The company's products cover isolation devices, interface devices and high-performance analog devices, which are mainly used in industrial control, power supplies, instrumentation, communication networks, automotive electronics, etc. field.


Source: Chuanshi Microelectronics official website

According to the company's official website, on September 21, Chuanshi Microelectronics released the high-speed CAN FD transceiver CA-IF1051HS and CA-IF1051S that meet the ISO1189-2 standard. The difference between the two devices CA-IF1051HS and CA-IF1051S is the difference in fault protection voltage and packaging. CA-IF1051HS has a fault protection voltage of 70V, adopts SOIC-8 external pin package, and its specifications are 4.9mm×3.9mm. CA-IF1051S fault protection voltage is 58V, using NDF built-in pin package, the specification parameter is 3.0mmx3.0mm.

CA-IF1051HS is a high-speed CAN transceiver that supports CAN FD protocol. It supports both CAN and CAN FD protocols at the same time. The maximum transmission rate is 5Mbps. It can achieve faster data transmission rate in a loaded CAN network. When the device is not powered on, the bus and logic pins are in a high-impedance state. After power on, the bus and RXD output pulses are free of glitches. CA-IF1051HS can be applied to a 30V working power grid, with a temperature resistance of -55°C to 150°C, can easily cope with general working environment temperatures, and has a wide range of application scenarios. The device integrates protection functions such as bus fault protection, VCC Pin protection, and overheating protection.

Summarize

At present, global chip production capacity is tight, coupled with the US chip blockade, chip localization is an inevitable trend. CAN transceiver chips are now domestically produced, which can further alleviate the shortage of CAN transceiver chips and help the development of domestic cars