7 to 12Vin 1.2Vout 8A Step-down Conv for Powering Rails in Altera Arria V FPGA Reference Design


Design files


The PMP8824 uses the TPS53318 DCAP Mode 8A step-down converter to power the VCCR_GXB, VCCL_GXB, VCCT_GXB rails in Altera Arria® V FPGAs enabling tight load regulation, low total component count, high efficiency, high power density, and excellent thermal performance. The complete design fits in 0.29 square inches and comes with a complete test report including power up and ENABLE into Short Circuit, Over-Current Thermal Stress, and demonstration of the Redundant OVP feature when the Feedback Node is shorted to GND.

  • 90% peak efficiency
  • Less than 20degC Temperature Rise on XAL5030 output inductor (Tamb=24degC, 12VIN, 1.2V/6Aout)
  • 36 total power supply components (including IC)
  • 0.29 square inches total power supply area
  • Control Loop Phase Margin greater than 74 degrees
  • 32mV overshoot/27mV undershoot of output voltage in response to 50% load transient
Output voltage options PMP8824.1
Vin (Min) (V) 8
Vin (Max) (V) 16
Vout (Nom) (V) 1.2
Iout (Max) (A) 6
Output Power (W) 7.2
Isolated/Non-Isolated Non-Isolated
Input Type DC
Topology Buck- Synchronous
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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.

SLUUAU5.PDF (3593 K)

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


Detailed schematic diagram for design layout and components


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

SLUC514.ZIP (405 K)

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


Includes TI products in the design and potential alternatives.

Buck converters (integrated switch)

TPS533181.5-V to 22-V, 8-A synchronous buck converter with eco-mode

Data sheet: PDF

Technical documentation

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Type Title Date
Technical article Power Tips: How to measure Bode plots with DCAP regulators PDF | HTML May 05, 2015
Test report PMP8824 Test Results Oct. 23, 2013

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