Solutions Search - LT3573 - Isolated Flyback Converter without an Opto-Coupler

Micropower Isolated Flyback Converter with Input Voltage Range from 6V to 100V

Zhongming Ye - Applications Engineer Dec 1st 2012
Introduction Flyback converters are widely used in isolated DC/DC applications because of their relative simplicity and low cost compared to alternative isolated topologies. Even so, designing a traditional flyback is not easy—the transformer requires careful design, and loop compensation is complicated by the well known ...

How To Design a Simple Isolated Flyback Converter - LT3573

Mike Negrete - Design Eng. Section Leader Mar 15th 2009
Isolated power supplies are needed in a wide variety of applications. Galvanic isolation is achieved by isolating two or more circuits using a transformer or optocoupler, and is desirable for many reasons: safety, noise immunity, circuit protection, etc. Traditionally, isolated power supplies use an optocoupler to transfer ...

Isolated Monolithic Flyback Simplifies Design & Eliminates Optocoupler

Nov 11th 2008
MILPITAS, CA - November 11, 2008 - Linear Technology Corporation announces the LT3573, an isolated monolithic flyback switching regulator with an integrated 1.25A NPN power switch. The LT3573 significantly simplifies the design of a flyback converter since it does not require a third winding or optoisolator and can sense the output ...

LT3573 9V-30Vin to ±5Vout @ 350mA Monolithic Isolated Flyback Converter (No Opto or Third Winding)

Oct 29th 2008
The LT3573 is a monolithic switching regulator specifically designed for the isolated flyback topology. No third winding or opto-isolator is required for regulation. The part senses the isolated output voltage directly from the primary-side flyback waveform. A 1.25A, 60V NPN power switch is integrated along with all control ...

LT3573 24Vin to 5Vout @ 0.7A Monolithic Isolated Flyback Converter (No Opto or Third Winding)

Oct 29th 2008
The LT3573 is a monolithic switching regulator specifically designed for the isolated flyback topology. No third winding or opto-isolator is required for regulation. The part senses the isolated output voltage directly from the primary-side flyback waveform. A 1.25A, 60V NPN power switch is integrated along with all control ...

DC1228A - LT3573EMSE | 10V to 30VIN, 5Vout at 1A Isolated Monolithic Flyback Converter

Oct 29th 2008
Demonstration circuit 1228A is an isolated flyback converter featuring the LT®3573. This demo circuit is designed for a 5.0V output from a 10V to 30V input. The maximum output current is 1A when the input voltage is higher than 20V. No third winding or opto-isolator is required for regulation. The part senses the isolated ...