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Solutions Search - Offline Controllers/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, ...

Blog Post 

 

DC2104A - LT8312EMS Demo Board | Boost Controller with PFC, 90VAC ≤ VIN ≤ 265VAC; VOUT = 400Vdc @ 0.375A

Mar 16th 2015
Demonstration Circuit 2104A is an off-line boundary conduction mode power factor correction (PFC) boost converter featuring the LT®8312. Boundary conduction mode offers inherent MOSFET valley switching to reduce the switching loss and the boost diode zero current switching to remove the diode reverse-recovery loss. The demo ...

Demo Board LTspice 

 

Power Factor Correction Boost Controller

Feb 19th 2015
MILPITAS, CA - February 19, 2015 - Linear Technology Corporation announces the LT8312, a power factor correction (PFC) boost controller that can achieve a power factor of greater than 0.99 by actively modulating the input current, allowing compliance with most harmonic current emission requirements. This device operates with ...

Press Release 

 

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 ...

Blog Post Circuit LTspice 

 

LT1249 Active Power Factor Correction for 90VAC to 270VAC Universal Offline Power Systems

Aug 4th 2014
The LT1249 uses a multiplier containing a square gain function from the voltage amplifier to reduce the AC gain at light output load and thus maintains low line current distortion and high system stability. The LT1249 also provides filtering capability to reject line switching noise which can cause instability when fed into ...

Circuit LTspice 

 

DC1816B - LT3799EMSE-1 Demo Board I Offline Isolated Flyback LED Driver with PFC, 90VAC ≤ VIN ≤ 305VAC, Vout = 36V(nom) @ 3A

Jan 11th 2014
Demonstration circuit 1816B is an off-line isolated flyback LED driver featuring LT®3799-1. The demo board provides a single constant current output of 3A over an LED string voltage from 22V to 38V. It is optimized to operate over a wide AC input voltage range (90VAC to 305VAC, 47Hz to 63Hz). LED current typically stays ...

Demo Board LTspice 

 

DC1947A - LT3799EMSE-1 Demo Board | Offline Isolated Flyback LED Driver with PFC

Jan 29th 2013
DC1947A - Demo Board for:LT3799-1 - Offline Isolated Flyback LED Controller with Active PFC ...

Demo Board 

 

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 ...

Demo Board LTspice 

 

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, ...

Video 

 

DC1775A - LT3799 Demo Board - Offline Isolated Flyback Controller with PFC - Universal Input, VOUT(NOM) = 28V, I LED = 0.5A

Feb 8th 2012
DC1775A - Demo Board for:LT3799 - Offline Isolated Flyback LED Controller with Active PFC ...

Demo Board 

 

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 ...

Press Release 

 

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 ...

Circuit 

 

DC1744A - LT3799EMSE Demo Board u 90V VIN 270V, VOUT= 1A at ~ 4V

Jul 15th 2011
DC1744A - Demo Board for:LT3799 - Offline Isolated Flyback LED Controller with Active PFC ...

Demo Board 

 

DC1595A - LT3799 Demo Board - Offline Isolated Flyback Controller with PFC - Universal Input, VOUT(NOM) = 20V, I LED = 1A

Mar 30th 2011
DC1595A - Demo Board for:LT3799 - Offline Isolated Flyback LED Controller with Active PFC ...

Demo Board LTspice 

 

Isolated Active PFC Off-Line LED Controller Is TRIAC Dimmable & Needs No OPTO Isolator

Feb 7th 2011
MILPITAS, CA - February 07, 2011 - Linear Technology announces the LT3799, an isolated LED controller with active power factor correction (PFC), specifically designed for driving LEDs from a universal input range of 90VAC to 265VAC. The LT3799 is optimized for LED applications requiring 4W to over 100W of LED power and also ...

Press Release 

 

DC012A - LT1103CT7 | OFFLINE POWER SUPPLY EVALUATION BOX

May 26th 1992
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Demo Board