PMBus Controlled Voltage Regulator for Enterprise Storage SSD ASIC Controller Reference Design


Design files


The PMP9703 reference design uses the TPS53915 12A PMBus SWIFT step down converter to provide complete voltage regulation, and system protection of an Enterprise Storage SSD Controller ASIC typically used to control and expand traffic flow in/out of SSDs. The output voltage can be dynamically adjusted in +/- 0.75% steps with a total range of +/-22% of the nominal output voltage (VOUT_ADJUST and VOUT_MARGIN used together) and with programmable step change durations of as little as 4us. The PMBus capability includes adjustment of the typical power supply parameters and monitoring of FAULTs through the STATUS_WORD PMBus command. This PMBus design is ideal for applications that require design flexibility, reduced component count, and Adaptive Voltage Scaling for enhanced performance and optimized power dissipation.

  • PMBus programming of power supply parameters including output voltage, Power On Delay, Power Good Delay, Soft Start, Switching Frequency and UVLO
  • Integrated 13.8 and 5.9 mΩ MOSFETs With 12-A Continuous Output Current
  • Optimized for ASICs with Adaptive Voltage Scaling (AVS) requirements
  • 335mm2 total power supply area
  • 1.2V output at 12A  nominal current
  • 81%  efficiency at 12V input, 1.2Vout at 12A
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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.

TIDU394.PDF (513 K)

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

TIDR733.PDF (91 K)

Detailed schematic diagram for design layout and components

TIDR734.PDF (92 K)

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

TIDR735.ZIP (245 K)

Files used for 3D models or 2D drawings of IC components


Includes TI products in the design and potential alternatives.

Buck converters (integrated switch)

TPS539151.5-V to 18-V, 12-A synchronous SWIFT™ buck converter with PMBus

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
Test report PMP9703 Test Results Jun. 16, 2014

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