Linear Technology part of Analog Devices

LT3511

Monolithic High Voltage Isolated Flyback Converter

Topologie: Flyback
Eingangsspannung (min.): 20.00 V
Eingangsspannung (max.): 30.00 V
Schaltfrequenz (min.): 40.00 kHz
Schaltfrequenz (max.): 650.00 kHz
Ausgang 1: 5.00 V / 0.250 A
Ausgang 2: 15.00 V / 0.090 A

Erstveröffentlichung am 01.12.2011, Version C

Beschreibung

The LT3511 is a high voltage monolithic switching regulator specifically designed for the isolated flyback topology. No third winding or opto-isolator is required for regulation as the part senses output voltage directly from the primary-side flyback waveform. The device integrates a 240mA, 150V power switch, high voltage circuitry, and control into a high voltage 16-lead MSOP package with four leads removed.The LT3511 operates from an input voltage range of 4.5V to 100V and delivers up to 2.5W of isolated output power. Two external resistors and the transformer turns ratio easily set the output voltage. Off-the-shelf transformers are available for several applications. The high level of integration and the use of boundary mode operation results in a simple, clean, tightly regulated application solution to the traditionally tough problem of isolated power delivery.

Merkmale

  • 4.5V to 100V Input Voltage Range
  • Internal 240mA, 150V Power Switch
  • Boundary Mode Operation
  • No Transformer Third Winding or
  • Opto-Isolator Required for Regulation
  • Improved Primary-Side Winding Feedback Load Regulation
  • VOUT Set with Two External Resistors
  • BIAS Pin for Internal Bias Supply and Power Switch Driver
  • No External Start-Up Resistor
  • 16-Lead MSOP PackageRemarks:-Refer Table 1.Predesigned Transformers page no.10

Artikel

  Artikel Nr. SPEC Produktserie Vin VOut1
(V)
IOut1
(mA)
Vaux
(V)
fswitch
(kHz)
L1
(µH)
NPRI : NSEC : NAUX ISAT1
(mA)
VT
(V (AC))
L
(mm)
W
(mm)
H
(mm)
Montageart Muster
750311660 PDF MID-FLYLT Flyback Transformers for Linear Technology 36 - 72 V (DC) 15 140 5 190 350 6:3:1 520 1875 9.78 9.14 10.54 SMT

Weitere Anwendungen und Artikel von Würth Elektronik zu diesem IC

  • LT3511
    Topologie: Flyback, Eingangsspannung (min.): 8.00 V, Eingangsspannung (max.): 20.00 V, Schaltfrequenz (min.): 40.00 kHz, Schaltfrequenz (max.): 650.00 kHz, Ausgang 1: 15.00 V / 0.040 A, Ausgang 2: 70.00 V / 0.000 A
  • LT3511
    Topologie: Flyback, Eingangsspannung (min.): 4.50 V, Eingangsspannung (max.): 100.00 V, Schaltfrequenz (min.): 40.00 kHz, Schaltfrequenz (max.): 650.00 kHz
  • LT3511
    Topologie: Flyback, Eingangsspannung (min.): 36.00 V, Eingangsspannung (max.): 72.00 V, Schaltfrequenz (min.): 40.00 kHz, Schaltfrequenz (max.): 650.00 kHz, Ausgang 1: 15.00 V / 0.050 A, Ausgang 2: 15.00 V / 0.100 A, Ausgang 3: 24.00 V / 0.060 A, Ausgang 4: 3.30 V / 0.400 A, Ausgang 5: 5.00 V / 0.300 A, Ausgang 6: 12.00 V / 0.100 A, Ausgang 7: -15.00 V / 0.050 A