Automotive Cluster Wide Vin Power Supply Design


Design files


This TI reference design is an automotive cluster wide Vin power supply solution that includes a wide Vin buck converter with an integrated LDO.   Also includes a highly efficient synchronous step-down, dc-dc converter. Along with a linear regulator designed to meet JEDEC SSTL-2 and JEDEC SSTL-18 specifications for DDR termination. This cluster power solution is optimized for the mid-end cluster market with the entire solution supporting 6.0V-40V system capabilities that can withstand start stop, and load dump conditions. The front end buck converter (TPS65320-Q1) is capable of supporting  4.5V  cold crank conditions.

  • Wide input voltage range: 6.0V - 40V withstanding start/stop, and load dump conditions
  • Monolithic high-voltage switching regulator with an integrated switch of 40 V, a power MOSFET, and a low-standby-current LDO Switching frequency programmable 100kHz – 2.5MHz
  • 3-MHz 2-A Step-Down Converter in 2-mm x 2-mm SON Package
  • Sink/source voltage regulator that will provide the VTT termination voltage for DDR memory
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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.

TIDU663.PDF (1775 K)

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


Detailed schematic diagram for design layout and components


Detailed schematic diagram for design layout and components


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


Detailed overview of design layout for component placement

TIDC784.ZIP (540 K)

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


PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

Multi-channel ICs (PMICs)

LP2998-Q1DDR Termination Regulator for Automotive Applications

Data sheet: PDF | HTML
Multi-channel ICs (PMICs)

TPS65320D-Q1Automotive 3.6V to 36V, 3.2A buck converter with auto-sourced 280mA LDO regulator

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
Test report TIDA-00275 Test Results Nov. 26, 2014
Application brief TIDA-00275 Overview Nov. 26, 2014
User guide TIDA-00275 Design Considerations Nov. 26, 2014

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