2.5W Bipolar Isolated Fly-Buck™ Ultra-Compact Reference Design
PMP15006
This product has been released to the market and is available for purchase. For some products, newer alternatives may be available.
This product has been released to the market and is available for purchase. For some products, newer alternatives may be available.
See the Important Notice and Disclaimer covering reference designs and other TI resources.
Key Document
- PMP15006 LM5017 Fly-Buck Test Results
(PDF 1671 KB)
01 Sep 2016
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 efficiency
- Compact and cost effective isolated solution with an off-the-shelf coupled inductor instead of a custom transformer
- Board size: 15 x 15 mm; max component height: 3.5 mm
- 3.5 mm max height of coupled inductor helps in height-constraint applications
See the Important Notice and Disclaimer covering reference designs and other TI resources.
