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Design and Implementation of Controller Area Network (CAN) Transceiver in High Voltage BCD 0.18μm Process

Araei, Soroush | 2018

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 51367 (05)
  4. University: Sharif University of Technology
  5. Department: Electrical Engineering
  6. Advisor(s): Medi, Ali
  7. Abstract:
  8. In this thesis, a transceiver chip compliant to Controller Area Network (CAN) protocol has been designed and implemented in High Voltage BCD 0.18um Technology.This RX/TX chip contains a transmitter, normal and low power receivers.In the transmitter, CAN bus common-mode voltage is sampled with a voltage sampler circuit and compared with a reference voltage. Receiving a control signal, the transmitter slop control circuit varies the speed turning output transistors on and off in order to keep transmitter Electromagnetic Emission (EME) as low as possible. In the receiver, a new method for bus common mode voltage rejection is introduced. By using a V-I converter block and a current subtractor circuit, the bus common mode voltage in eliminated in the input of the receiver block. This method eliminates the need for High-voltage transistors and due to negligible parasitic effects of low-voltage transistors, the receiver delay, typically, will be as low as 35ns. The low power receiver monitors the CAN Bus and wakes the RX/TX up to normal mode whenever it detects any signal on the bus while it only consumes 5 µA.The designed RX/TX is fully compliant to ISO 11898-2 and ISO 11898-5. Also, Electro-Magnetic Compatibility (EMC) standards are considered in the design procedure.Index Terms- CAN, High Voltage BCD 0.18µm, RX/TX, ISO 11898, EMC
  9. Keywords:
  10. Controller Area Network (CAN) ; Electromagnetic Compatibilty (EMC) ; Analog Front End (AFE)Cheap ; Low Power Receiver ; ISO 11898 Standard

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