Active Clamp Forward Quarter Brick (18 to 60Vdc Input 3.3V/12A) Reference Design PMP8790 (ACTIVE)

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Description

This reference design generates a 3.3V/12A output from a wide 18V-60V telecom input. The UCC2897A controls an active clamp forward converter power stage. The low gate charge and low RDSon of the CSD17501Q5A and CSD18502Q5B, implemented as self-driven synchronous rectifiers, provide for an efficient design. This design is laid out in a standard quarter brick footprint and includes enable, positive rail remote sense, and output trimming features.

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Parametrics
 PMP8790.1
(Output Voltage 1)
Vin (Min) (V)18
Vin (Max) (V)60
Vout (Nom) (V)3.3
Iout (Max) (A)12
Output Power (W)39.6
Isolated/Non-IsolatedIsolated
Input TypeDC
TopologyForward- Active Clamp
Forward- Synchronous

TI Devices (4)

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
CSD17501Q5A  30V, N-Channel NexFET™ Power MOSFET with 20 Volt Vgs  MOSFETs  Not Available View Design Kits & Evaluation Modules
CSD18502Q5B  40-V, N-Channel NexFET™ Power MOSFET  MOSFETs  Sample & Buy Not Available
TLV431A  1% Accuracy Low-Voltage Adjustable Precision Shunt Regulator  Voltage references  Sample & Buy View Design Kits & Evaluation Modules
UCC2897A  Advanced Current-Mode Active Clamp PWM Controller  Offline & isolated DC/DC controllers & converters  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
CSD17501Q5A VSONP (DQJ)| 8 Download Download
TLV431A Download Download
Download Download
Download -
Download Download
Download -
Download Download
UCC2897A Download Download
Download Download

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Step 2: Download the Symbol and Footprint from the CAD.bxl file table.


Technical Documents

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User guides (1)
Title Type Size (KB) Date
PDF 2555 25 Feb 2013
Design files (4)
Title Type Size (KB) Date
ZIP 301 25 Feb 2013
PDF 250 25 Feb 2013
PDF 18 25 Feb 2013
PDF 73 25 Feb 2013

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