High efficiency, low-output ripple power supply reference design for imaging application


Design files


The point-of-load power-tree on video surveillance systems is optimized with this reference design. This reference design has a high performance on key parameters such as output voltage accuracy, voltage ripple, and thermal dissipation. This high performance is possible with a small board area and low BOM cost. This design operates from a 5-V supply commonly found in video doorbells, IP network cameras, and wireless cameras.

  • 1% typical output voltage accuracy
  • High system efficiency to 90% at full load
  • Voltage ripple < 60-μV, useful for noise-critical peripherals
  • Thermal hot spot is < 45°C at full load current
  • Power supply spur free dynamic resolution greater than 80dB
  • Small form factor
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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.

TIDUEC7.PDF (10732 K)

Reference design overview and verified performance test data

TIDRX89.PDF (416 K)

Detailed schematic diagram for design layout and components

TIDRX90.PDF (81 K)

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

TIDRX91.PDF (394 K)

Detailed overview of design layout for component placement

TIDRX93.ZIP (1091 K)

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


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

TIDRX92.PDF (1059 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

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Technical documentation

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Type Title Date
* Design guide High-Efficiency, Low-Output Ripple Power Supply Ref. Des. for Imaging Applicatio Oct. 12, 2018

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