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Texas Instruments TPS65381-Q1 | Demoboard TIDA-00548
4- to 20-mA Analog Input Module Reference Design for Safety Applications
Overview
| Topology | Buck Converter |
| Input voltage | 7.3-8.1 V |
| Switching frequency | 2250 kHz |
| Output 1 | 3.3 V |
| Output 2 | 5 V |
| IC revision | E2 |
Description
The TIDA-00548 design is an isolated dual-channel4- to 20-mA analog input reference design, whichcan be used as a sub-part for functional safetyprogrammable logic controllers (PLCs). This referencedesign delivers digitized input values using a 32-bithigh-performance analog-to-digital converter (ADC).The RM4x dual-core ARM® Cortex®-R4 based CPUwith lockstep technology and built-in self-tests (BIST)compares the converted values of up to nineselectable analog input signal chain paths. The dualinput approach with two separate burden resistorsallows redundant measurement of either a single 4- to20-mA loop or two independent loops. Hercules™ RMARM Cortex-R based MCUs for functional safetyapplications (part of the SafeTI designs packages)help to develop systems according to IEC 61508SIL 3.
Features
- Two-Channel, 4- to 20-mA Current Measurementfor Redundancy
- Two ADC References (External and Internal)
- Small Burden Resistor (24.9 Ω)
- ADC Built-in Features, such as Test DAC,Secondary ADC, Analog Signal Level Alarm
- Isolator Shutdown Upon Failure Provides ReliableNotification to Back End
- All Integrated Circuits: MTBF Greater 4×108
- Designed in BeagleBone Cape Form Factor
Typical applications
- Programmable Logic Controllers (PLCs)
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | λDom typ.(nm) | Emitting Color | λPeak typ.(nm) | IV typ.(mcd) | VF typ.(V) | Chip Technology | 2θ50% typ.(°) | L(µH) | IR(A) | ISAT(A) | fres(MHz) | Mount | VIN | VOut1(V (DC)) | IOut1(A) | Type of Insulation | fswitch(kHz) | ∫Udt(Vµs) | NPRI : NSEC | VT(V (AC)) | W(mm) | H(mm) | Pins | Color | Gender | Packaging | Poles | L(mm) | Vaporphase process | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WL-SMCW SMT Mono-color Chip LED Waterclear, 570 nm, Bright Green | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWL-SMCW SMT Mono-color Chip LED Waterclear | Dominant Wavelength [typ.]570 nm | Emitting ColorBright Green | Peak Wavelength [typ.]572 nm | Luminous Intensity [typ.]40 mcd | Forward Voltage [typ.]2 V | Chip TechnologyAlInGaP | Viewing Angle Phi 0° [typ.]140 ° | – | – | – | – | MountSMT | – | – | – | – | – | – | – | – | Width0.8 mm | Height0.7 mm | – | – | – | PackagingTape and Reel | – | Length1.6 mm | – | ||||
| WL-SMCW SMT Mono-color Chip LED Waterclear, 625 nm, Red | Downloads27 files RAY files
| Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWL-SMCW SMT Mono-color Chip LED Waterclear | Dominant Wavelength [typ.]625 nm | Emitting ColorRed | Peak Wavelength [typ.]630 nm | Luminous Intensity [typ.]250 mcd | Forward Voltage [typ.]2 V | Chip TechnologyAlInGaP | Viewing Angle Phi 0° [typ.]140 ° | – | – | – | – | MountSMT | – | – | – | – | – | – | – | – | Width0.8 mm | Height0.7 mm | – | – | – | PackagingTape and Reel | – | Length1.6 mm | – | |||
 | WE-TPC SMT Tiny Power Inductor, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-TPC SMT Tiny Power Inductor | – | – | – | – | – | – | – | Inductance3.3 µH | Rated Current1 A | Saturation Current0.85 A | Self Resonant Frequency80 MHz | MountSMT | – | – | – | – | – | – | – | – | Width2.8 mm | Height1.1 mm | Pins2 | – | – | – | – | Length2.78 mm | – | ||||
 | WE-TPC SMT Tiny Power Inductor, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-TPC SMT Tiny Power Inductor | – | – | – | – | – | – | – | Inductance22 µH | Rated Current0.5 A | Saturation Current0.75 A | Self Resonant Frequency23 MHz | MountSMT | – | – | – | – | – | – | – | – | Width2.8 mm | Height2.8 mm | Pins2 | – | – | – | – | Length2.8 mm | – | ||||
 | WS-DISV Small Compact SMT Flat Actuator with Top Tape 1.27 mm, –, – | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Pins2 | – | – | PackagingTape and Reel | Poles2 | Length3.71 mm | Vaporphase processYes | ||||
 | WE-PPTI Push-Pull Transformers, –, – | 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 (DC) | Output Current 10.5 A | Type of InsulationFunctional | Switching Frequency 250 - 550 | Voltage-µSecond11 Vµs | Turns Ratio1:1.7 | Insulation Test Voltage2500 V (AC) | Width10.2 mm | Height4.19 mm | – | – | – | PackagingTray | – | Length6.73 mm | – | |||
 | WR-PHD Jumper, –, – | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-PHD Jumper | – | – | – | – | – | – | – | – | Rated Current3 A | – | – | – | – | – | – | – | – | – | – | – | – | – | Pins1 | ColorBlack | GenderJumper | PackagingBag | – | Length2.44 mm | – |