Device for CAN BUS
The device addresses signal oscillation and impedance issues in CAN FD SIC buses by using diodes and transistors with controlled impedance to stabilize signal transitions, reducing oscillations and ensuring compliance with CAN FD SIC constraints.
FR3148099B1Active Publication Date: 2025-08-29STMICROELECTRONICS INT NV
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Patent Information
- Application Number
- FR2023003890
- Authority / Receiving Office
- FR · FR
- Patent Type
- Patents
- Current Assignee / Owner
- Filing Date
- 2023-04-19
- Publication Date
- 2025-08-29
- Estimated Expiration
- 2043-04-19
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Abstract
Device for CAN BUS The present description relates to a device (SIC-DEV) comprising first and second terminals connected to a bus, and third and fourth terminals to supply and reference potentials (VDD, GND). A first transistor (T1) and a first resistor (R1) are in series between the first terminal (302) and a first diode connected to the third terminal (304). A second resistor (R2), a second transistor (T2) and a second diode (D2) are in series between the first and fourth terminals (302, 306). A third transistor (T3) and a third resistor (R3) are in series between the first diode and the second terminal (300). A fourth resistor (R4), a fourth transistor (T4) and a third diode (D4) are in series between the second and fourth terminals (300, 306). Each time a dominant bit and a recessive bit are transmitted, a circuit (CMD) turns the transistors on for a duration starting with the recessive bit.Figure for abstract: Fig. 3.
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