SLLA581 April   2022 TCAN1462-Q1 , TCAN1463-Q1

 

  1.   Trademarks
  2. 1What is SIC?
  3. 2The Limitations of Classical CAN and Regular CAN-FD
  4. 3How CAN SIC Reduces Bus Ringing
  5. 4Experimental Results on TI’s TCAN1462 Device
  6. 5TI’s CAN SIC Devices
  7. 6Benefits of CAN SIC

4 Experimental Results on TI’s TCAN1462 Device

To showcase the ringing-suppression functionality of the Texas Instruments (TI) eight-pin TCAN1462 CAN SIC transceiver, Texas Instruments conducted an experiment with the following setup:

  • Two-node point-to-point communication, where node 1 is the TCAN1462 and node 2 is the TCAN1044A, a regular CAN-FD transceiver, as shown in Figure 4-1. The ringing network (specified by CiA 601-4) emulating a complex star topology is connected across the CAN bus terminals. As the waveforms in Figure 4-2 and Figure 4-3 show, the CAN bus and RXD signals look clean when the TCAN1462 is driving. But when the TCAN1044A is driving, there is considerable ringing on the bus and RXD glitches.
Figure 4-1 Network with Two Node and Ringing Circuit
GUID-20220308-SS0I-GGW4-XJ8M-7ZKWJHJK5W5L-low.png Figure 4-2 Waveforms with CAN-FD Driving the Network
GUID-20220308-SS0I-QDQ6-QLKG-ZLNJJMCV7GR1-low.png Figure 4-3 Waveforms with CAN SIC Driving the Network

The hugely negative-going VOD is not a problem and there is no overshoot on VOD, resulting in clean RXD.