Power Reduction Using Dynamic Switching Reference Design


Design files


The TIDA-00675 shows the power reduction benefits of dynamically switching a load on/off using a load switch. The design guide shows how frequency of switching, duty cycle, and the use of a discharge resistor can have an impact on power consumption.

  • Power consumption benefits when switching a load on/off dynamically
  • Effects of frequency, duty cycle, and load current on power consumption
  • Use of load switch with and without quick output discharge for dynamic switching
  • This design is tested and includes data for each use case
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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.

TIDUB18.PDF (1204 K)

Reference design overview and verified performance test data

TIDRJA9.PDF (1027 K)

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

TIDRJB3.ZIP (1828 K)

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


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

TIDRJB2.PDF (3703 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

Load switches

TPS229155.5-V, 2-A, 39-mΩ load switch with output discharge

Data sheet: PDF | HTML
Load switches

TPS22965-Q11-ch, 5.7-V, 4-A, 16-mΩ automotive load switch with adj. rise time and output discharge

Data sheet: PDF | HTML
Buck controllers (external switch)

LM25117-Q1Automotive Grade 4.5-42V Wide Vin, Current Mode Synchronous Buck Controller with Tracking

Data sheet: PDF | HTML
Buck converters (integrated switch)

TPS62090-Q1Automotive: 3A, 2.5 to 6V input, up to 97% efficiency, 3x3 QFN, Step-Down Converter

Data sheet: PDF | HTML
N-channel MOSFETs

CSD18563Q5A60-V, N channel NexFET™ power MOSFET, single SON 5 mm x 6 mm, 6.8 mOhm

Data sheet: PDF | HTML
Real-time clocks (RTCs) & timers

LMC555World’s smallest 555 timer with low power, high accuracy and a Fmax of 3MHz

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
* Design guide Power Reduction Using Dynamic Switching Design Guide Nov. 10, 2015

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