PMP8703

Dual Buck with 5V @ 7A and 3.3V @ 4A Reference Design

PMP8703

Design files

Overview

This design is a dual buck for 12V input voltage which provides 5.0V @ 7.0A and 3.3V @ 4.0A. TIs CSD86330Q3D Power Blocks enable a high efficiency even at high switching frequencies.

Output voltage options PMP8703.1 PMP8703.2
Vin (Min) (V) 12 18
Vin (Max) (V) 12 35
Vout (Nom) (V) 5 3.3
Iout (Max) (A) 7 4
Output Power (W) 35 13.2
Isolated/Non-Isolated Non-Isolated Non-Isolated
Input Type DC DC
Topology Buck- Synchronous Buck- Synchronous

A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

Download ready-to-use system files to speed your design process.

SLUUB07.PDF (805 K)

Test results for the reference design, including efficiency graphs, test prerequisites and more

SLURAS0.PDF (112 K)

Detailed schematic diagram for design layout and components

SLURAS1.PDF (20 K)

Complete listing of design components, reference designators, and manufacturers/part numbers

Products

Includes TI products in the design and potential alternatives.

Buck controllers (external switch)

TPS40322Dual Output or Two-phase Synchronous Buck Controller

Data sheet document-pdfAcrobat PDF open-in-new HTML
Power blocks

CSD86330Q3D25-V, N channel synchronous buck NexFET™ power MOSFET, SON 3 mm x 3 mm power block, 20 A

Data sheet document-pdfAcrobat PDF open-in-new HTML

Technical documentation

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Type Title Date
Test report PMP8703 Test Results Apr. 03, 2014

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