Low Profile Quad Output Isolated Fly-Buck Power Supply for Industrial Application Reference Design

(ACTIVE) PMP9478

Description & Features

Technical Documents

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Description

The PMP9478 reference design is a low profile quad output isolated Flybuck power supply for industrial applications. The power supply has a synchronous buck regulator, LM5017, and a low profile (6mm) transformer. It generates four isolated outputs of ±5V, ±15V, 50mA each.  The LM5017 is a 100V wide Vin, 600mA synchronous buck regulator. The input voltage range of the design is 20V to 32V, making it suitable for 24V input industrial application. The Flybuck can regulate the secondary side outputs without opto-coupler or aux 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.

Features
  • Multiple isolated bias power using Fly-Buck, ideal for PLC and industrial applications
  • 2W output power, +/-15V, +/-5V @ 50mA each, with LM5017 capable of 7.5V to 100V input
  • Primary Side Regulation without Opto, Good Cross Regulation, within +/-5%
  • Less than 6mm low profile transformer
  • Constant On Time Control, No Loop Compensation Required, and Fast Transient Response
  • This circuit board is tested, and the design files and test report are included

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.


  




Parametrics
 PMP9478.1
(Output Voltage 1)
PMP9478.2
(Output Voltage 2)
PMP9478.3
(Output Voltage 3)
PMP9478.4
(Output Voltage 4)
Vin (Min) (V)20202020
Vin (Max) (V)32323232
Vout (Nom) (V)-515-155
Iout (Max) (A).05.05.05.05
Output Power (W).25.75.75.25
Isolated/Non-IsolatedIsolatedIsolatedIsolatedIsolated
Input TypeDCDCDCDC
TopologyFlybuckFlybuckFlybuckFlybuck

TI Devices (1)

Order samples, get tools and find more information on the TI products in this reference design.

Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
LM5017  7.5-100V Wide Vin, 600mA Constant On-Time Synchronous Buck Regulator  Step-Down (Buck)  Sample & Buy View Design Kits & Evaluation Modules

Technical Documents

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.

User guides (1)
Title Abstract Type Size (KB) Date Views
PDF 585 28 Aug 2014 51
Design files (5)
Title Abstract Type Size (KB) Date Views
PDF 84 14 Oct 2014 15
ZIP 187 28 Aug 2014 11
ZIP 294 28 Aug 2014 9
PDF 475 28 Aug 2014 19
PDF 157 28 Aug 2014 55


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