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How to Design a Simple Isolated Flyback Converter using the LT3573

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.

2/28/2013 6:11:09 PM

How to design a simple isolated flyback converter using the LT3573 from Linear Technology

ImageManufacturer Part NumberDescriptionAvailable QuantityPriceView Details
IC REG FLYBACK 1.25A 16MSOPLT3573EMSE#PBFIC REG FLYBACK 1.25A 16MSOP0 - Immediate$76.48View Details
IC REG FLYBACK 1.25A 16MSOPLT3573EMSE#TRPBFIC REG FLYBACK 1.25A 16MSOP4733 - Immediate$76.48View Details
IC REG FLYBACK 1.25A 16MSOPLT3573IMSE#PBFIC REG FLYBACK 1.25A 16MSOP636 - Immediate$83.51View Details
IC REG FLYBACK 1.25A 16MSOPLT3573IMSE#TRPBFIC REG FLYBACK 1.25A 16MSOP1566 - Immediate$83.72View Details

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Flyback Regulators as a First Choice for Isolated Power Supplies Flyback converters are rarely the first thought for the engineer looking for a suitable switching DC/DC converter ("regulator") because they can be troublesome to design in.

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LT3573 - Isolated Flyback Converter Without an Opto-Coupler LT3573 design significantly simplifies flyback converters by sensing the output voltage directly from the primary side flyback waveform.