No-Opto Isolated Flyback Converters

The No-Opto isolated flyback devices from Linear Technology (now part of Analog Devices) need no opto-coupler or LT1431 for regulation. The devices sense the reflected isolated output voltage from the primary-side waveform, resulting in better than ±1% load and line regulation. This simplifies the design, enables a smaller solution size, and only requires one component crossing the isolation barrier. Several off-the-shelf transformers are shown in the data sheets, making it easy to complete the design.

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