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Texas Instruments UCC28910D

UCC28910, UCC28911 High-Voltage Flyback Switcher with Primary-Side Regulation and Output Current Control

Details

TopologieSperrwandler
Eingangsspannung85-265 V
Schaltfrequenz105-125 kHz
Ausgang 115 V / 0.33 A
IC-RevisionC

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
  • Bias Power for Smoke Alarm, Fire Alarm and Thermostat
  • Power Metering Bias

Weiterführende Informationen

Artikeldaten

Artikel Nr. Daten­blatt Simu­lation Downloads Status ProduktserieVinVOut1
(V)
IOut1
(mA)
Vaux
(V)
fswitch
(kHz)
L
(µH)
NPRI : NSEC : NAUXISAT
(mA)
VT
(V (AC))
L
(mm)
W
(mm)
H
(mm)
MontageartBauformIR
(A)
RDC max.
(Ω)
fres
(MHz)
Version Muster
7508110329
5 Dateien Aktiv i| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre.MID-OLTI Offline Flyback Transformers for Texas Instruments 70 - 265 V (AC) 15 340 15 130 700 5.5:1:1 575 4000 16.9 18.8 13.31 THT EE16/7/5
7447462101SPEC
8 Dateien Aktiv i| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre.WE-TI Tonneninduktivität 100 800 6 6 8.5 THT 5075 0.8 0.65 7.1 Schrumpfschlauch
Artikel Nr. Daten­blatt Simu­lation
7508110329
7447462101SPEC
Muster
Artikel Nr. Daten­blatt Simu­lation Downloads Status ProduktserieVinVOut1
(V)
IOut1
(mA)
Vaux
(V)
fswitch
(kHz)
L
(µH)
NPRI : NSEC : NAUXISAT
(mA)
VT
(V (AC))
L
(mm)
W
(mm)
H
(mm)
MontageartBauformIR
(A)
RDC max.
(Ω)
fres
(MHz)
Version Muster