CSD87351Q5D Synchronous Buck NexFET™ Power Block

1 Features

• Half-Bridge Power Block
• 90% System Efficiency at 20 A
• Up to 32-A Operation
• High-Frequency Operation (up to 1.5 MHz)
• High-Density SON 5-mm × 6-mm Footprint
• Optimized for 5-V Gate Drive
• Low-Switching Losses
• Ultra-Low-Inductance Package
• RoHS Compliant
• Halogen Free
• Lead-Free Terminal Plating

2 Applications

• Synchronous Buck Converters
  • High-Frequency Applications
  • High-Current, Low-Duty Cycle Applications
• Multiphase Synchronous Buck Converters
• POL DC-DC Converters
• IMVP, VRM, and VRD Applications

3 Description

The CSD87351Q5D NexFET™ power block is an optimized design for synchronous buck applications offering high-current, high-efficiency, and high-frequency capability in a small 5-mm × 6-mm outline. Optimized for 5-V gate drive applications, this product offers a flexible solution capable of offering a high-density power supply when paired with any 5-V gate drive from an external controller/driver.

Top View

1. For all available packages, see the orderable addendum at the end of the data sheet.

Typical Circuit

Typical Power Block Efficiency and Power Loss

4 Revision History

Changes from D Revision (January 2012) to E Revision

• Added note for I_DM in the Absolute Maximum Ratings tableGo
• Changed part number in Figure 32Go
• Added the Device and Documentation Support sectionGo

Changes from C Revision (October 2011) to D Revision

• Added Feature Bullet: Up to 32 A OperationGo

Changes from B Revision (September 2011) to C Revision

• Changed "DIM a" Millimeter Max value From: 1.55 To: 1.5 and Inches Max value From: 0.061 To: 0.059Go

Changes from A Revision (August 2011) to B Revision

• Remove Z_DS(on) MaxGo
• Remove Z_DS(on) MaxGo
• Added Electrical Performance bulletGo

Changes from * Revision (March 2011) to A Revision

• Replaced R_DS(on) with Z_DS(on)Go
• Added Equivalent System Performance sectionGo