48V-60VDC Input, 12V/250W Active Clamp Forward Reference Design

(ACTIVE) PMP9656

Description & Features

Technical Documents

Support & Training

Order Now


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


Description

This reference design generates a 12V/21A output from 54V DC input. The UCC2897A controls an active clamp forward converter power stage. The low gate charge and low RDSon of the CSD18532Q5B, implemented as self-driven synchronous rectifiers, allow this design to achieve a max load efficiency of nearly 96%.  The compact UCC27511 drivers simplify the gate drive circuitry for the synchronous rectifiers.

Features
  • Over 95% efficiency at max load
  • 89% efficiency at 10% load
  • Low output ripple
  • Self-driven synchronous rectifiers (using CSD18532Q5B MOSFETs) reduce drive complexity
  • Generates regulated 12V bus for telecom or server applications
  • Low profile, less than 14mm max component height

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


  




Parametrics
 PMP9656.1
(Output Voltage 1)
Vin (Min) (V)48
Vin (Max) (V)60
Vout (Nom) (V)12
Iout (Max) (A)21
Output Power (W)252
Isolated/Non-IsolatedIsolated
Input TypeDC
TopologyForward- Active Clamp
Forward- Synchronous

TI Devices (3)

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
CSD18532Q5B  60-V, N-Channel NexFET™ Power MOSFET  Power MOSFET  Sample & Buy View Design Kits & Evaluation Modules
UCC27511  4A/8A Single Channel High-speed Low-side Gate Driver  MOSFET and IGBT Gate Drivers  Sample & Buy Not Available
UCC2897A  Advanced Current-Mode Active Clamp PWM Controller  Offline and Isolated DC/DC Controllers and Converters  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 2540 16 Oct 2014 49
Design files (4)
Title Abstract Type Size (KB) Date Views
PDF 424 16 Oct 2014 41
PDF 89 16 Oct 2014 28
PDF 84 16 Oct 2014 49
PDF 159 16 Oct 2014 119

Support & Training

Try our support forums.
Search expert answers for this part Ask a new question

Content is provided 'AS IS' by the respective TI and Community contributors and does not constitute TI specifications.
See terms of use.

Blogs