SNOU195 july   2023 LDC5072-Q1

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1 Introduction
  5. 2 Gaining Access to the LDC5072 Sensor Design Tool
  6. 3 Installer Setup
  7. 4 Installing the Tool
  8. 5 Tool Overview
  9. 6 Using the Tool to Create a Design and Generate a Supporting SPICE Model and Gerber Files
  10. 7 Running Simulations in Pspice
  11. 8 Layout, Bill-of-Materials, and Schematic of the Test PC board
  12. 9 Troubleshooting
  13. 10Revision History

9 Troubleshooting

If the tool does not seem to be creating a design based on GUI input, then the tool state file located at folder application/L12_CB.mat is possibly corrupted. Try deleting this file and start again.

GUID-20230515-SS0I-VZQJ-KZV3-MT53LP4ZT6WF-low.png Figure 9-1 LDC5072 Sensor Designer State File

The time to complete the design process varies with size and complexity of the sensor – typical times are two to eight minutes. If the design time is longer than 30 minutes, then the optimizer is probably stuck or the meshing cannot satisfy the error tolerances. Close the tool and start again with a different set of parameters. Table 9-1 shows some examples of elapsed times to generate a design for different conditions. Note these times can vary depending on the user's hardware and operating system.

Table 9-1 Approxmate Sensor Tool Elapsed Times for a Given Set of Design Parameters
Design Diameter (mm) E/M Layers Turns/Layer Design Time (min:sec)
1 75 3 1 6 2:04
2 102 2 4 1 15:03
3 51 3 2 4 6:08
4 32 4 5 2 5:29
5 35.7 5 3 3 3:18
6 64.2 1 6 1 1:20
7 35 4 3 3 1:36

If the Gerber files show strange routing or shorts, then the trace width, spacing, or VIA dimensions are insufficient for the sensor size or electrical-to-mechanical ratio.

If you are having difficulty with the tool please feel free to post an inquiry on the Texas Instruments Sensing E2E Forum. As part of the inquiry, please attach the following to your E2E thread:

  1. The *.sns design file created by clicking the “Save Design" button on the front panel of the tool (see first figure below).
  2. A text file containing a copy of the text in the tool’s “log” window (second figure below).
  3. The “LDC5072_Sensor_Designer.log” data file in the application directory of the install folder.