High-Efficiency Small Form Factor 112W Sync Buck Reference Design
PMP10691
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Description & Features

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Description

PMP10691 is a single-phase synchronous switching regulator rated for 3.3V, 35A output from an input voltage of 12V. This design uses the LM27403 synchronous buck controller and two CSD87350Q5D power block MOSFETs to provide maximum efficiency when combined with a 250nH ferrite output inductor. This design solution uses all ceramic capacitors to fit into a minimum board area.

Features
  • High Power Density
  • Self contained - does not need external capacitors
  • 9.4mm max component height
  • Small solution size

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Schematic/Block Diagram

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Test Data

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Design Files

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Parametrics
 PMP10691.1
(Output Voltage 1)
Vin (Min) (V)12
Vin (Max) (V)12
Vout (Nom) (V)3.3
Iout (Max) (A)35
Output Power (W)115.5
Isolated/Non-IsolatedNon-Isolated
Input TypeDC
TopologyBuck- Synchronous

TI Devices (2)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
CSD87350Q5D  30V, Nch synchronous buck NexFET MOSFET™, SON5x6 PowerBlock, 40A  MOSFETs  Sample & Buy View Design Kits & Evaluation Modules
LM27403  3-20V, Voltage Mode Synchronous Buck Controller with Temperature-Compensated DCR Current Sensing  Step-down (buck)  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
CSD87350Q5D LSON-CLIP (DQY)| 8 Download Download
LM27403 Download Download

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Technical Documents

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User guides (1)
Title Type Size (KB) Date
PDF 1220 10 Jun 2015
Design files (5)
Title Type Size (KB) Date
ZIP 192 10 Jun 2015
ZIP 566 10 Jun 2015
PDF 435 10 Jun 2015
PDF 128 10 Jun 2015
PDF 428 10 Jun 2015

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