2.5W Bipolar Isolated Fly-Buck™ Ultra-Compact Reference Design
Description
PMP15006 is a miniature (15 mm X 15 mm) Fly-Buck™ reference design using the LM5017. The primary and secondary outputs are set at +/-5V nominal. This ultra-compact design accommodates an input voltage range from 18V to 30V: and a nominal input voltage of 24V. The primary side is set at 5.3V using feedback resistors and the secondary isolated side will supply -5V. The transformer used is a 33 uH: LPD8035V coupled inductor from Coilcraft: with a turns-ratio of 1:1 and a maximum operating current on both the primary and secondary rails set at 250 mA each. The switching frequency is set at 475 kHz.
Features
- 18V to 30Vin: 5V @250 mA (dual) output: 2.5W (one non-isolated primary and one isolated secondary)~82% peak efficiencyCompact and cost effective isolated solution with an off-the-shelf coupled inductor instead of a custom transformerBoard size: 15 x 15 mm; max component height: 3.5 mm3.5 mm max height of coupled inductor helps in height-constraint applications
Applications
- Processor module
- Wired communication modules
Product Categories
- Power management