NTC Probe Wiring for LTC2984

flux

2:11

Planning wiring modifications.

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Analyzing the schematic.

Formulating a high-level plan.

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Analyzing the schematic.

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Searching the project.

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Searching 4 domains.

Refining search for connections.

Searching 4 domains.

Searching for pin connections.

Searching 3 domains.

Searching 3 domains.

Analyzing wiring connections.

Search complete — 1266 results across 4 domains.

Creating a formal plan.

Working on your request.

Creating a high-level plan.

You’re wiring the isolated CAN channel around U14 and IC3.
  • Review the interface topology and isolation domains
  • Add required support parts: termination, biasing, and decoupling
  • Connect controller, isolator, bus, and power nets correctly
  • Verify completeness and ERC readiness
The plan is ready to execute - click Start on the plan bar.
11 days

Started implementing a plan

# Goal

- Wire the isolated CAN interface between Isolated CAN #1 connector, U14 (MCP2518FDT-H/SL), and IC3 (ISOW1044BDFMR), ensuring the inclusion of all required support components such as termination resistors, bias circuits, decoupling capacitors, and other associated passive elements.

# Implementation plan

1. **Review Interface Architecture**

1. Confirm the connection topology of the CAN interface among the Isolated CAN #1 connector, U14, and IC3.

2. Document the required signal paths, power, and ground isolations for the isolated domain.

2. **Identify and Add Supporting Passive Components**

1. Add termination resistors on the CAN bus, typically a 120 Ω resistor at one end, ensuring correct bus termination.

2. Include biasing resistors to maintain the CAN bus idle state as per design recommendations.

3. Select and add decoupling capacitors for both U14 and IC3 for proper power supply filtering.

4. Include any additional supporting resistors and capacitors for signal integrity and option for clock support or filtering if needed.

3. **Connect CAN Interface and Isolation Components**

1. Wire the CAN transceiver signals from U14 to the Isolated CAN #1 connector using proper net connections.

2. Route the isolated signals through IC3 ensuring correct isolation between the CAN bus sides.

3. Validate that the connection of power/ground respects the isolation boundaries as per IC3's datasheet and design guidelines.

4. **Review and Verify Design Integration**

1. Review the schematic for completeness, ensuring that all required supporting components are added.

2. Validate that the isolation domain is properly implemented and the bus signals are free of errors.

3. Perform an Electrical Rule Check (ERC) to verify correct connections and component ratings.

# Success criteria

- The CAN interface wiring correctly interconnects the Isolated CAN #1 connector, U14, and IC3 with all passive components properly added.

- The design includes the required termination, bias, decoupling, and support circuits as per CAN bus isolation guidelines.

- The schematic passes ERC and meets the design requirements for isolated CAN operation.

11 days

Task completed.

0:18

11 days

Execution stopped by user.

1:25

Analyzing the schematic.

Looking for "termination split termination standby enable fail-safe and CANH CANL external components" in isow1044.pdf

Looking for "VDD decoupling capacitor recommendations and TXCAN RXCAN connection guidance" in External-CAN-FD-Controller-with-SPI-Interface-DS20006027B.pdf

11 days

flux

0:00

Diagram



  
    
  
  
    
  








TXCAN RXCAN

CANH CANL






"U14 MCP2518FD CAN Controller"
"IC3 ISOW1044 Isolated CAN Transceiver"
"Isolated CAN 1 Connector"
"Logic Domain node_3V3 and GND"
"Isolated CAN Power and Ground"
"Bus Termination and Bias Network"
11 days

Set System Architecture to "flowchart TD U14["U14 MCP..."

0:10

Set System Architecture to "flowchart TD U14["U14 MCP2518FD CAN Controller"] -->|TXCAN RXCAN| IC3["IC3 ISOW1044 Isolated CAN Transceiver"] IC3 --..."

11 days
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    CM5 SD Card Support Update

    CM5 SD Card Support Update thumbnail
    CM5-based controller updated with SD card interface support: 47k pull-ups on CMD and DAT0-DAT3, local 100nF and 10uF decoupling on the SD 3.3V rail, and card-detect reserved as a future option because the current SD module symbol does not expose a detect pin.

    Properties

    flowchart TD U14["U14 MCP2518FD CAN Controller"] -->|TXCAN RXCAN| IC3["IC3 ISOW1044 Isolated CAN Transceiver"] IC3 -->|CANH CANL| CN1["Isolated CAN 1 Connector"] VIO["Logic Domain 3V3 and GND"] --> U14 VIO --> IC3 ISO["Isolated CAN Power and Ground"] --> IC3 TERM["Bus Termination and Bias Network"] --> CN1

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