Description

The PMP10558 reference design is a low profile triple output isolated Fly-Buck power supply for industrial applications.  The power supply has a synchronous buck regulator: LM5017: and a low profile (6mm) transformer.  It generates three isolated outputs depending on the transformer selection.  The LM5017 is a 100V wide Vin: 600mA synchronous buck regulator.  The input voltage range of the design is 18V to 30V: making it suitable for 24V input industrial applications.  The Fly-Buck can regulate the secondary side outputs without an opto-coupler or auxillary winding and is capable of achieving good cross regulation within ±5%.  With LM5017's constant on-time control: no loop compensation is required: which simplifies the design and helps reduce the external part count and BOM cost.