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Texas Instruments LM20242MH/NOPB | Demoboard TIDA-00123
PLC I/O Module Front-End Controller Using a Tiva C Series ARM Cortex-M4 MCU
Overview
| Topology | Flyback Converter |
| Input voltage | 24 V |
| Output 1 | 24 V / 0.1 A |
| IC revision | E1 |
Description
This TI Design implements the Tiva™ C Series MCU as a front-end controller for TI's suite of Programmable Logic Controller (PLC) analog and digital I/O module reference design boards. The design includes sockets for interfacing and simultaneously controlling two TI Designs I/O reference design boards. It allows maximum versatility whereby the I/O boards can be any combination of analog or digital, input or output modules. The controller system automatically identifies and configures each I/O board appropriately, setting any required compensation of the analog circuitry. On-board power supplies are included to power the controller board as well as providing isolated power to both I/O boards, eliminating the need for multiple external power supplies. Additional circuitry is provided that optimizes the I/O signal aquisition and data throughput, enabling full 1-MSPS data acqusition and 20-MHz SPI bus performance. This design also performs as an evaluation platform for each of the I/O boards, analyzing the performance of several key parameters and relaying the results to a PC via an onboard USB 2.0 connector. Included in the design is an easy-to-use Graphical User Interface that runs a LabView™-based analysis program facilitating comprehensive evaluation of the I/O reference designs. The GUI provides many options for configuration of the test parameters as well as filtering and set up options that allow for comprehensive analysis of the individual I/O module boards. Full documentation and design files of the platform are provided.
Features
- 32-bit, 80MHz Tiva™ C Series ARM® Cortex™-M4 MCU
- Modular plug-in design: two identical interface sockets for simultaneously controlling and analyzing TI's suite of PLC I/O module reference design boards
- Circuitry for enhanced throughput enabling full 1-MSPS data acquisition and 20-MHz SPI performance
- EMC-compliant isolated RS485 interface for fieldbus connectivity and EMC-compliant USB 2.0 interface for PC connectivity
- High-efficiency, isolated power supply for both I/O boards using LM5017 Flybuck™ topology
- Power supply protection circtry for safeguarding against reverse polarity, transient/surge, and in-rush current
- LabView™-based GUI for functional testing and performance analysis
Typical applications
- Digital Output Module
- Analog Input Module
- Analog Output Module
- Other PLC
- Digital Input Module
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | L(µH) | IRP,40K(A) | ISAT,30%(A) | RDC typ.(mΩ) | fres(MHz) | VOP(V) | Mount | VIN | VOut1(V) | IOut1(mA) | Type of Insulation | fswitch(kHz) | ∫Udt(Vµs) | NPRI : NSEC | VT(V (AC)) | L(mm) | W(mm) | H(mm) | VOut2(V) | IOut2(mA) | ISAT(A) | LS(µH) | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WE-MAPI SMT Power Inductor, 3.3 µH, 1.85 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-MAPI SMT Power Inductor | Inductance3.3 µH | Performance Rated Current1.85 A | Saturation Current @ 30%3.7 A | DC Resistance232 mΩ | Self Resonant Frequency38 MHz | Operating Voltage80 V | MountSMT | – | – | – | – | – | – | – | – | Length3 mm | Width3 mm | Height1 mm | – | – | Saturation Current2.95 A | – | ||||
 | WE-IBTI Isolated Buck Transformers, 66 µH, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-IBTI Isolated Buck Transformers | Inductance66 µH | – | – | – | – | – | MountSMT | Input Voltage 15 - 40 V (DC) | Output Voltage 112.7 V | Output Current 1600 mA | – | Switching Frequency 600 | – | Turns Ratio1:1 | Insulation Test Voltage1500 V (AC) | Length13.34 mm | Width15.24 mm | Height11.43 mm | Output Voltage 212.7 V | Output Current 2600 mA | Saturation Current1.2 A | Leakage Inductance1.5 µH | ||||
 | WE-PPTI Push-Pull Transformers, 475 µH, – | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-PPTI Push-Pull Transformers | Inductance475 µH | – | – | – | – | – | MountSMT | Input Voltage 3.3 V (DC) | Output Voltage 15 V | Output Current 1450 mA | Type of InsulationFunctional | Switching Frequency 250 - 550 | Voltage-µSecond11 Vµs | Turns Ratio1:2 | Insulation Test Voltage2500 V (AC) | Length6.73 mm | Width10.2 mm | Height4.19 mm | – | – | – | – |