Power Integrations RDK-874 Reference Design Kit

Power Integrations RDK-874 Reference Design Kit is a 0.48W non-isolated power supply with lossless AC zero-crossing detection using the LinkSwitch™-TNZ LNK3302D ICs. The LNK3302D is designed to generate a lossless zero-cross signal and support buck, buck-boost, and flyback topologies. These ICs offer more design flexibility than discrete implementations, which reduces component count by 40% or higher. This Power Integrations RDK-874 Reference Design is configured as a high-side buck topology. It provides a nominal output voltage of 6V at 80mA load from a wide input voltage range of 90VAC to 305VAC and a zero-crossing detection (ZCD) signal.

Features

Highly integrated solution with LNK3302D
Low-component count with integrated 725V power MOSFET, current sensing, and protection
Wide-range AC input
< 200µA standby input current across the AC line
Zero-crossing signal output synchronized to AC line

Meets EN550022 and CISPR-22 Class B conducted EMI
Compact solution 1″ x 1″, 10mm maximum height
< 20mW no-load input power
Load short-circuit protection

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Mechanical Drawing - Power Integrations RDK-874 Reference Design Kit

Power Integrations RDK-874 Reference Design Kit

Features

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Schematic

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