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Texas Instruments UCC28910D
UCC28910, UCC28911 High-Voltage Flyback Switcher with Primary-Side Regulation and Output Current Control
Details
| Topologie | Sperrwandler |
| Eingangsspannung | 85-265 V |
| Schaltfrequenz | 105-125 kHz |
| Ausgang 1 | 15 V / 0.33 A |
| IC-Revision | C |
Beschreibung
The UCC28910 and UCC28911 are high-voltage flyback switchers that provide output voltage and current regulation without the use of an optical coupler. Both devices incorporate a 700-V power FET and a controller that process operating information from the flyback auxiliary winding and power FET to provide a precise output voltage and current control. The integrated high-voltage current source for startup that is switched off during device operation, and the controller current consumption is dynamically adjusted with load. Both enable the very low stand-by power consumption.
Control algorithms in the UCC28910 and UCC28911, combining switching frequency and peak primary current modulation, allow operating efficiencies to meet or exceed applicable standards. Discontinuous conduction mode (DCM) with valley switching is used to reduce switching losses. Built-in protection features help to keep secondary and primary component stress levels in check across the operating range. The frequency jitter helps to reduce EMI filter cost.
Eigenschaften
- Constant-Voltage (CV) and Constant-Current (CC) Output Regulation Without Optical-Coupler
- ±5% Output Voltage Regulation Accuracy
- ±5% Output Current Regulation With AC Line and Primary Inductance Tolerance Compensation
- 700-V Start-Up and Smart Power Management Enables <30-mW Standby Power
- 115-kHz Maximum Switching Frequency Design for High-Power Density
- Valley Switching and Frequency Dithering to Ease EMI Compliance
- Thermal Shut Down
- Low Line and Output Over-Voltage Protection
Remarks:From main data sheetL1=L2=1mH both are considered as a input signals, due to single transformer T1 at the output signal
Typische Anwendungen
- Smart plug, IoT, MCU and WiFi Power
- Home and Building Automation
- Wall Adapters, Chargers for Mobile Phones
- LED Lighting
- Aux power for TV, Server, White Goods
- Power Metering Bias
- Bias Power for Smoke Alarm, Fire Alarm and Thermostat
Weiterführende Informationen
Artikeldaten
Artikel Nr. | Datenblatt | Simulation | Downloads | Status | Produktserie | L(µH) | IR(A) | ISAT,10%(A) | RDC max.(Ω) | fres(MHz) | Version | Vin | VOut1(V) | IOut1(A) | Vaux(V) | fswitch(kHz) | NPRI : NSEC : NAUX | ISAT(A) | VT(V (AC)) | Bauform | Montageart | L(mm) | B(mm) | H(mm) | Muster | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WE-TI Tonneninduktivität, 100 µH, 0.8 A | Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | ProduktserieWE-TI Tonneninduktivität | Induktivität100 µH | Nennstrom0.8 A | Sättigungsstrom 10.8 A | Gleichstromwiderstand0.65 Ω | Eigenresonanzfrequenz7.1 MHz | VersionSchrumpfschlauch | – | – | – | – | – | – | Sättigungsstrom0.8 A | – | Bauform5075 | MontageartTHT | Länge6 mm | Breite6 mm | Höhe8.5 mm | ||||
 | WE-OLTI Offline Flyback Transformers, 700 µH, – | Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | ProduktserieWE-OLTI Offline Flyback Transformers | Induktivität700 µH | – | – | – | – | – | Input Voltage 70 - 265 V (AC) | Ausgangsspannung 115 V | Ausgangsstrom 10.34 A | Hilfsspannung15 V | Switching Frequency 130 | Übersetzungsverhältnis6.6:1:1 | Sättigungsstrom0.575 A | Prüfspannung4000 V (AC) | BauformEE16/7/5 | MontageartTHT | Länge17.5 mm | Breite18.8 mm | Höhe17.5 mm |