Linear Technology part of Analog Devices

LT3512

Monolithic High Voltage Isolated Flyback Converter

Topologie: Flyback
Eingangsspannung (min.): 36.00 V
Eingangsspannung (max.): 72.00 V
Schaltfrequenz (min.): 40.00 kHz
Schaltfrequenz (max.): 650.00 kHz
Ausgang 1: 24.00 V / 0.110 A
Ausgang 2: 3.30 V / 0.700 A
Ausgang 3: 15.00 V / 0.100 A
Ausgang 4: -15.00 V / 0.100 A
Ausgang 5: 15.00 V / 0.200 A
Ausgang 6: 12.00 V / 0.200 A
Ausgang 7: 5.00 V / 0.500 A

Erstveröffentlichung am 01.11.2011, Version B

Beschreibung

The LT3512 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 420mA, 150V power switch, high voltage circuitry, and control into a high voltage 16-lead MSOP package with four leads removed.The LT3512 operates from an input voltage range of 4.5V to 100V and delivers up to 4.5W 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 420mA, 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 page num 10 for more transformers.

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
750311839 PDF Flyback Transformer WE-FB
750311662 PDF Flyback Transformer WE-FB
750311559 PDF MID-FLYLT Flyback Transformers for Linear Technology 35 - 75 V (DC) 5 400 5 200 - 300 175 4:1:1 800 1875 9.78 9.14 10.54 SMT
750311573 PDF Flyback Transformer WE-FB

Weitere Anwendungen und Artikel von Würth Elektronik zu diesem IC

  • LT3512
    Topologie: Flyback, Eingangsspannung (min.): 4.50 V, Eingangsspannung (max.): 100.00 V, Schaltfrequenz (min.): 40.00 kHz, Schaltfrequenz (max.): 650.00 kHz
  • LT3512
    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 / 0.070 A
  • LT3512
    Topologie: Flyback, Eingangsspannung (min.): 10.00 V, Eingangsspannung (max.): 20.00 V, Schaltfrequenz (min.): 40.00 kHz, Schaltfrequenz (max.): 650.00 kHz, Ausgang 1: 70.00 V / 0.010 A