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Texas Instruments TLV76050DBZR | Demoboard TIDA-010085
24-VAC multi-channel solid state relay reference design using digital isolator
Details
| Topologie | Sonstige Topologie |
| IC-Revision | 001 |
Beschreibung
This reference design demonstrates a multi-channel solid state relay (SSR) using a single isolation. The design uses a multi-channel digital isolator with a single isolated power supply and common ground gate-drive circuit to control multiple SSRs independently. The design is rated for 24-VAC powered relays with current rating up to 2 A, but scalable up to 240 VAC and higher current rating. Each SSR channel consumes less than 75-mm2 space with a maximum height of the component around 3-mm, enabling considerable size saving compared to electromechanical relays. The use of single isolated power supply reduces board space and BOM cost
Eigenschaften
- Multiple solid-state relays using a single isolation with multichannel digital isolator, easily scalable to any number of SSR channels with minimum extra cost
- SSR drive voltage 24 VAC ±20%, drive current 2-A RMS (voltage and current rating, scalable by using appropriately rated components)
- SSR turn on and turn off time: 15–300 μs (adjustable), average current consumption per SSR drive (referred to primary) < 4 mA (adjustable down to 20 μA per channel)
- SSR size < 75 mm2 per channel. Height is around 3 mm.
- Functionally isolated open-loop flyback based power supply without the need of an MCU
- Surge and switching overvoltage protection
Typische Anwendungen
- Thermostat, HVAC Controller
Weiterführende Informationen
Artikeldaten
Artikel Nr. | Datenblatt | Simulation | Downloads | Status | Produktserie | λDom typ.(nm) | Emittierte Farbe | λPeak typ.(nm) | IV typ.(mcd) | VF typ.(V) | Chiptechnologie | 2θ50% typ.(°) | C | Tol. C | VR(V (DC)) | Bauform | Betriebstemperatur | DF(%) | RISO | Keramiktyp | L(mm) | B(mm) | H(mm) | Fl(mm) | Verpackung | L1(µH) | L2(µH) | n | IR 1(A) | ISAT 1(A) | RDC1 typ(mΩ) | RDC2 typ(mΩ) | RDC1 max(mΩ) | RDC2 max(mΩ) | fres 1(MHz) | Muster | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WL-SMCW SMT Mono-color Chip LED Waterclear, 625 nm, Rot | Downloads27 Dateien Strahldaten
| Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | ProduktserieWL-SMCW SMT Mono-color Chip LED Waterclear | dominante Wellenlänge [typ.]625 nm | Emittierte FarbeRot | Spitzen-Wellenlänge [typ.]630 nm | Lichtstärke [typ.]250 mcd | Durchlassspannung [typ.]2 V | ChiptechnologieAlInGaP | Abstrahlwinkel Phi 0° [typ.]140 ° | – | – | – | Bauform0603 | Betriebstemperatur -40 °C up to +85 °C | – | – | – | Länge1.6 mm | Breite0.8 mm | Höhe0.7 mm | – | VerpackungTape and Reel | – | – | – | – | – | – | – | – | – | – | |||
| WCAP-CSGP MLCCs 50 V(DC), –, – | Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | ProduktserieWCAP-CSGP MLCCs 50 V(DC) | – | – | – | – | – | – | – | Kapazität1 nF | Kapazität±10% | Nennspannung50 V (DC) | Bauform0402 | Betriebstemperatur -55 °C up to +125 °C | Verlustfaktor2.5 % | Isolationswiderstand10 GΩ | KeramiktypX7R Klasse II | Länge1 mm | Breite0.5 mm | Höhe0.5 mm | Pad Dimension0.25 mm | Verpackung7" Tape & Reel | – | – | – | – | – | – | – | – | – | – | |||||
 | WE-MTCI SMT Multi-Turn Ratio Doppeldrossel, –, – | Simulation– | Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | ProduktserieWE-MTCI SMT Multi-Turn Ratio Doppeldrossel | – | – | – | – | – | – | – | – | – | Nennspannung80 V (DC) | Bauform5030 | Betriebstemperatur -40 °C up to +125 °C | – | – | – | Länge5.2 mm | Breite5.2 mm | Höhe3.1 mm | – | – | Induktivität 133 µH | Induktivität 2297 µH | Übersetzungsverhältnis1:3 | Nennstrom [1]0.45 A | Sättigungsstrom [1]0.75 A | Gleichstromwiderstand 11466 mΩ | Gleichstromwiderstand 23758 mΩ | Gleichstromwiderstand 11900 mΩ | Gleichstromwiderstand 25200 mΩ | Eigenresonanzfrequenz [1]4 MHz |