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FSP Hydro X 650 Power Supply Review

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FSP are using a 120mm Power Logic fan model number PLA12025B12H-2. This is a high grade double ball bearing fan.

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The overall build is very clean and soldering quality is high throughout. The filtering stage is comprised of 4x Y caps, 1x X cap, 1x MOV and 2 CM chokes. The topology on the primary side is a Half Bridge with LLC Resonant Converter and the secondary side is Synchronous Rectification with DC-DC Converters.

Two small heatsinks deal with keeping the single bridge rectifier and primary FET’s cool.

Minor rails are regulated by two voltage regulators which are incorporated onto the same PCB.

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FSP are using a high grade Japanese, Nichicon branded 105c Capacitor in the primary stage – rated 420v 470uF. I did notice FSP are also using lower grade polymer capacitors by Teapo which isn’t such a big deal in this case, as polymer caps don’t contain liquid material and are less likely to fail.

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