Solutions Search - LT3798 - Isolated No Opto-Coupler Flyback Controller with Active PFC

No-Opto Isolated Flyback Converters

Jun 10th 2016
The no-opto isolated flyback parts from Linear need no opto-coupler or LT1431 shunt regulator for regulation. They sense the isolated output voltage directly from the primary-side waveform. This simplifies the design, allows for a smaller solution size and only requires one component crossing the isolation barrier. The load, ...

LT3798/LT8309 5V, 2A Energy Star Compliant Isolated Converter

Jesus Rosales - Applications Engineer
Gabino Alonso - Strategic Marketing Engineer Feb 10th 2015
The focus of this circuirt was to take a design based on the LT®3798 and make it Energy Star Compliant; reduce no load, standby power to less than 300mW. That was achieved by adding the components highlighted in the dotted line box in the schematic inside the primary side. This circuit is simply a switch that removes ...

DC1817B - LT3798EMSE Isolated Demo Board VIN = 90VAC to 265VAC, VOUT = 24V @ 2A High Voltage

Jan 10th 2013
DC1817B - Demo Board for:LT3798 - Isolated No Opto-Coupler Flyback Controller with Active PFC ...

LTspice: Evaluating Electrical Quantities

Gabino Alonso - Strategic Marketing Engineer Apr 19th 2012
  Utilizing LTspice waveform viewer to analyze a circuit and perform basic measurements is very useful. However there are times where you need to evaluate a circuit with a numerical analysis. For these circumstances .MEASURE statements can be very powerful in evaluating user-defined electrical quantities. .MEASURE statements ...

LT3798 Isolated No Opto-Coupler Flyback Controller with Active PFC - Video Product Brief

Bruce Haug - Product Marketing Engineer Mar 6th 2012
The LT®3798 is a constant-voltage/constant-current isolated flyback controller that combines active power factor correction (PFC) with no opto-coupler required for output voltage feedback into a single-stage converter. A LT3798 based design can achieve a power factor of greater than 0.97 by actively modulating the input current, ...

Isolated Power Factor Corrected Offline Regulator Needs No Opto

Dec 5th 2011
MILPITAS, CA – December 5, 2011 – Linear Technology Corporation announces the LT3798, an isolated flyback controller with single stage active power factor correction (PFC). A power factor of greater than 0.97 is accomplished by actively modulating the input current, eliminating the need for an extra switching power stage ...

LT3798 Universal Input 48W PFC Application

Dec 1st 2011
The LT3798 is a constant voltage/constant current isolated flyback controller that combines active power factor correction (PFC) with no opto-coupler required for output voltage feedback into a single-stage converter. A LT3798 based design can achieve a power factor of greater than 0.97 by actively modulating the input current, ...

LT3798 112W Wide DC Input Industrial Power Supply

Dec 1st 2011
The LT®3798 is a constant-voltage/constant-current isolated flyback controller that combines active power factor correction (PFC) with no opto-coupler required for output voltage feedback into a single-stage converter. A LT3798 based design can achieve a power factor of greater than 0.97 by actively modulating the input ...

Isolated Flyback Controller with PFC Controls Voltage or Current

Jesus Rosales - Applications Engineer Oct 27th 2011
Linear Technology’s LT®3798 isolated controller with active power factor correction (PFC) is specifically designed for regulating bus voltages or driving constant current applications over a wide input range of 10V to 480V. It is ideal for constant voltage/current applications requiring 4W to over 100W power. The LT3798’s ...