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Texas Instruments UCC28881
<125μA Standby High Efficiency Power Supply Reference Design for Neutral-less Wireless Lighting
Details
| Topologie | Sonstige Topologie |
| Schaltfrequenz | 52-75 kHz |
Beschreibung
Lighting control devices such as wired or wireless switches and dimmers may be used in retrofit environments or in new installations. New installations may have separate line, neutral, and earth wires where the lighting control unit can be powered by connecting it between the line and neutral, whereas in most of the retrofit installations only line and earth wires may be available. In such cases, the lighting control unit has to be powered by connecting it between line and earth terminals while ensuring that the current flowing to earth is limited to 0.5 mA. This necessitates the use of a very low standby consumption, high efficiency power supply.The TIDA-01097 TI Design is a wireless lighting control unit using a low quiescent current offline converter that enables excellent efficiency at low power levels, a low-noise, high-PSRR, low quiescent current, good line and load transient response LDO, and a very low standby and low active current specs wireless microcontroller.
Eigenschaften
- <125-μA quiescent current including wireless MCU and 69% efficiency @ 35mW load
- Off-line converter with integrated 700-V power MOSFET
- High side current limit circuit with inherent inrush current limiting, output overload and short circuit protections
- Low noise, high PSRR, low quiescent current, good load transient response LDO for wireless control
- Tested and characterized with SimpleLink Bluetooth® Low Energy Wireless MCU having 1-μA standby, low Rx, Tx, core and sensor controller currents enabling easy implementation of lighting controls
- Enables neutral less lighting control applications with earth as return that complies with UL773A
Typische Anwendungen
- AC-to-DC Power Supplies / E-Meter, Home Automation SMPS
- Appliances, White Goods and LED Drivers
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 | L(µH) | IR(A) | ISAT,10%(A) | RDC max.(Ω) | fres(MHz) | Version | Pins | Typ | Montageart | Arbeitsspannung(V (AC)) | Muster | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| WCAP-CSGP MLCCs 10 V(DC), 47 µF, ±20% | Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | ProduktserieWCAP-CSGP MLCCs 10 V(DC) | Kapazität47 µF | Kapazität±20% | Nennspannung10 V (DC) | Bauform1210 | Betriebstemperatur -55 °C up to +85 °C | Verlustfaktor10 % | Isolationswiderstand0.002 GΩ | KeramiktypX5R Klasse II | Länge3.2 mm | Breite2.5 mm | Höhe2.5 mm | Pad Dimension0.75 mm | Verpackung7" Tape & Reel | – | – | – | – | – | – | – | – | – | – | |||||
 | WE-TI Tonneninduktivität, –, – | Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | ProduktserieWE-TI Tonneninduktivität | – | – | – | Bauform5075 | Betriebstemperatur -40 °C up to +125 °C | – | – | – | Länge6 mm | Breite6 mm | Höhe8.5 mm | – | – | Induktivität470 µH | Nennstrom0.35 A | Sättigungsstrom 10.4 A | Gleichstromwiderstand2.4 Ω | Eigenresonanzfrequenz3.4 MHz | VersionSchrumpfschlauch | – | – | MontageartTHT | – | ||||
 | WR-PHD Stiftleisten - Einreihig, –, – | Simulation– | 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 | – | Nennstrom3 A | – | – | – | – | Pins4 | TypGerade | MontageartTHT | Arbeitsspannung250 V (AC) |