Isolated quad-output Fly-Buck Bias for PLC applications Reference Design (PMP9409)

The PMP9409 reference design is an 4-output isolated Fly-Buck power supply for PLC applications. It takes 24V nominal input and provides 4 isolated sets of (+15V) bias voltage, Each rail has a load of 30mA. Each set of rails is generated from one single transformer windings on the secondary side. A compact solution size is achieved (56x43mm). The design features the LM5017 synchronous buck converter configured as a Fly-Buck regulator. With the benefit of primary side regulation, the supply has the outputs regulated without the opto-coupler or additional transformer winding. The LM5017 has a wide Vin range which is up to 100V and 600mA output current capability with integrated switch FETs. The input voltage to the reference board can be loosely regulated with a range of 17V to 36V.


Four isolated outputs, 4x(+15V@30mA) Fly-Buck converter design, primary side regulation, compact solution for multiple isolated output supply Wide input voltage range of 17V to 36V 85% peak efficiency. LM5017 sync buck regulator, up to 100V wide Vin range, 600mA capability This circuit board is tested, and the design files and test report are included.


Схемы и диаграммы

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Тесты и симуляция

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Спецификация (BOM)

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Isolated quad-output Fly-Buck Bias for PLC applications Reference Design PMP9409

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