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Texas Instruments SN6505BDBVR | Demoboard TIDA-010065
High-efficiency, low-emission, isolated DC/DC converter-based analog input module reference design
Details
| Topologie | Gegentaktflusswandler |
| Eingangsspannung | 5 V |
| Schaltfrequenz | 100-1600 kHz |
| Ausgang 1 | 6 V |
| IC-Revision | E2 |
Beschreibung
This reference design is a simplified architecture for generating an isolated power supply for isolated amplifiers for measuring isolated voltages and currents. A fully integrated DC/DC converter with reinforced isolation operating from a 5-V input with configurable 5-V or 5.4-V output (headroom for low dropout regulator (LDO)) generates the isolated power. Shunts that are interfaced to ±50-mV input range isolation amplifiers configured as channel isolated inputs measure the current. Potential divider output interfaced to ±250-mV or ±12-V input range isolation amplifiers configured as group isolated inputs measure the voltage. The outputs of the isolation amplifiers interface directly to 24-bit delta sigma analog-to-digital converter (ADC) or are scaled to ±10 V using gain amplifiers and interfaced to 16-bit SAR ADC for performance evaluation. On-board digital diagnostics improves reliability and enhances system performance.
Eigenschaften
- Generation of high efficiency isolated supply of 5 or 5.4V (LDO head room) from 4.5 to 5.5 V input providing reinforced isolation
- Measures three group isolated voltage inputs with a range of 3-350V providing pin compatible basic or reinforced isolation and three isolated current inputs from 40mA-12.5A providing reinforced isolation
- ISO224 with input range of ±12V input range connects directly to low power current transformer output as per IEC 60044-8
- Measurement of DC voltage and current with 1us fast fault detection comparator path
- Gain scaling of isolation amplifier output to ADS8588H input range of ±10V using instrumentation, precision or general purpose amplifiers
- Achieves ±0.2% accuracy for both voltage and current using 16-bit SAR or 24-bit delta-sigma ADC
Typische Anwendungen
- Process control / Precision instruments / Low-noise filament supplies
- Isolated power supply for CAN, RS-485, RS-422, RS-232, SPI, I2C, low-power LAN / Low-noise isolated USB supplies / Distributed supplies
- Telecom supplies / Radio supplies
- Medical instruments
Weiterführende Informationen
Artikeldaten
Artikel Nr. | Datenblatt | Simulation | Downloads | Status | Produktserie | C | Tol. C | VR(V (DC)) | Bauform | Betriebstemperatur | DF(%) | RISO | Keramiktyp | L(mm) | B(mm) | H(mm) | Fl(mm) | Verpackung | Vin | VOut1(V (DC)) | IOut1(A) | Isolierungstyp | fswitch(kHz) | ∫Udt(Vµs) | NPRI : NSEC | L(µH) | VT(V (RMS)) | Montageart | Pins | Typ | IR(A) | Arbeitsspannung(V (AC)) | MusterVerfügbarkeit & Muster | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
SPECWCAP-CSGP MLCCs 50 V(DC), 100 nF, ±10% | Verfügbarkeit – | Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | ProduktserieWCAP-CSGP MLCCs 50 V(DC) | Kapazität100 nF | Kapazität±10% | Nennspannung50 V (DC) | Bauform0603 | Betriebstemperatur -55 °C up to +125 °C | Verlustfaktor3 % | Isolationswiderstand5 GΩ | KeramiktypX7R Klasse II | Länge1.6 mm | Breite0.8 mm | Höhe0.8 mm | Pad Dimension0.4 mm | Verpackung7" Tape & Reel | – | – | – | – | – | – | – | – | – | – | – | – | – | – | –Verfügbarkeit prüfen | ||||
 | SPECWR-PHD Stiftleisten - Einreihig, –, – Anstehende PCNAufgrund einer anstehenden PCN wird in Kürze eine Änderung am Bauteil durchgeführt. Anbei finden Sie die entsprechende PCN. Bei weiteren Fragen wenden Sie sich bitte an Ihren Vertriebsmitarbeiter. | Simulation– | Verfügbarkeit – | Downloads7 Dateien | Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | ProduktserieWR-PHD Stiftleisten - Einreihig | – | – | – | – | Betriebstemperatur -40 °C up to +105 °C | – | Isolationswiderstand1000 MΩ | – | Länge10.16 mm | – | – | – | VerpackungBeutel | – | – | – | – | – | – | – | – | – | MontageartTHT | Pins4 | TypAbgewinkelt | Nennstrom3 A | Arbeitsspannung250 V (AC) | –Verfügbarkeit prüfen | |
 | SPECWE-PPTI Push-Pull Transformers, –, – | Simulation– | Verfügbarkeit – | Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | ProduktserieWE-PPTI Push-Pull Transformers | – | – | – | Bauform1209 | Betriebstemperatur -40 °C up to +125 °C | – | – | – | Länge9.14 mm | Breite12.7 mm | Höhe7.62 mm | – | VerpackungTape and Reel | Input Voltage 5 V (DC) | Ausgangsspannung 15 V (DC) | Ausgangsstrom 10.65 A | IsolierungstypVerstärkt | Switching Frequency 300 - 620 | Spannung-µSekunde10 Vµs | Übersetzungsverhältnis1:1.3 | Induktivität340 µH | Prüfspannung5000 V (RMS) | MontageartSMT | – | – | – | – | –Verfügbarkeit prüfen |
Verfügbarkeitsprognose
WE Artikelnummer VerpackungseinheitenWiederbeschaffungszeit
––– Wochen
| Erwartete Verfügbarkeit | Eingehender Bestand | Menge |
|---|---|---|
| Aktuelle Verfügbarkeit | – | – |
Für diese Mengenanfrage gibt es keine Prognose.
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