15W Isolated Self-Driven Synchronous Inverting Fly-Buckboost Using LM5160 Regulator Reference Design

(ACTIVE) PMP10571

Description & Features

Technical Documents

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Key Document

Description

PMP10571 is a sync isolated Flybuck-boost converter with a negative primary voltage. The power supply has a synchronous buck regulator, LM5160, and a versa pack transformer. The synchronous rectifier on the secondary improves efficiency and regulation under heavy load. The design accepts an input voltage of 18V to 30V, and outputs 5V, capable of providing 3A of current to the load, making it suitable for 24V input industrial application. The Fly-Buck topology can regulate the secondary side outputs without opto-coupler or aux winding, and is capable of achieving good regulation within ±5%. With LM5160's Constan On-Time control, no loop compensation is required, which  simplifies the design and helps reducing the external part count and BOM cost.

Features
  • Versa pack transformer increase design versatility
  • +5V/3A with LM5160 capable of 4.5V to 65V input
  • Primary Side Regulation without Opto, Good Regulation, within +/-5%
  • Synchronous rectifier on the secondary winding improves efficiency and regulation.
  • Constant On Time Control, No Loop Compensation Required, and Fast Transient Response
  • No primary winding snubber is required

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


  




Parametrics
 PMP10571.1
(Output Voltage 1)
Vin (Min) (V)18
Vin (Max) (V)30
Vout (Nom) (V)5
Iout (Max) (A)3
Output Power (W)15
Isolated/Non-IsolatedIsolated
Input TypeDC
TopologyFlybuck

TI Devices (2)

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
CSD18534Q5A  60V N-Channel NexFET Power™ MOSFET  Power MOSFET  Sample & Buy Not Available
LM5160  LM5160 Wide Input 65V, 2A Synchronous Buck / Fly-Buck™ Converter  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 TI Recommends
PDF 1790 10 Apr 2015 44
Design files (5)
Title Abstract Type Size (KB) Date Views
ZIP 95 10 Apr 2015 6
ZIP 432 10 Apr 2015 4
PDF 610 10 Apr 2015 7
PDF 105 10 Apr 2015 9
PDF 158 10 Apr 2015 78


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