TIDA-00510

High Power Density 12Vin, 100W Synchronous DC/DC Step-Down Buck Converter with Inductor-On-Top

TIDA-00510

Design files

Overview

The TPS53355 Inductor-On-Top step-down buck converter design enables high power density through reduction of X-Y PCB area by placing the output inductor on top of the IC and results in 92% minimum efficiency for 66W and 100W output power designs (3.3V and 5V output)  requiring only 4x100µF ceramic output caps.

Features
  • 94% Efficiency at 12VIN, 5Vout,20A output current, 650KHz
  • 6W power loss at 100W Output Power
  • 14mV Output Voltage Ripple at 20A output current
  • Only 4x100µF output ceramic capacitors
  • 27mV Output Voltage Overrshoot in response to 5A to a 10A load increase, 2.5A/µs
  • 58.7°C IC case temperature at 5Vout and 20A output current (100W Output Power)
Output voltage options TIDA-00510.1 TIDA-00510.2
Vin (Min) (V) 10.8 10.8
Vin (Max) (V) 13.2 13.2
Vout (Nom) (V) 5 3.3
Iout (Max) (A) 20 20
Output Power (W) 100 66
Isolated/Non-Isolated Non-Isolated Non-Isolated
Input Type DC DC
Topology Buck- Integrated Switch Buck- Integrated Switch

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.

TIDU936.PDF (1993 K)

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

TIDU937.PDF (1934 K)

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

TIDREE6.PDF (1878 K)

Detailed schematic diagram for design layout and components

TIDREE7.PDF (1434 K)

Detailed schematic diagram for design layout and components

TIDREE8.PDF (113 K)

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

TIDCA64.ZIP (256 K)

Design file that contains information on physical board layer of design PCB

Products

Includes TI products in the design and potential alternatives.

Buck converters (integrated switch)

TPS53355High-efficiency 1.5-V to 15-V, 30-A synchronous SWIFT™ buck converter with eco-mode

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

Technical documentation

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Type Title Date
Test report TIDA-00510 Test Results (3.3-V Output) Apr. 15, 2015
User guide TIDA-00510 FLIR Inspection Report Apr. 15, 2015
Test report TIDA-00510 Test Results (5-V Output) Apr. 15, 2015

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