Power Reduction Using Dynamic Switching Reference Design
TIDA-00675
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Key Document

Description

This design 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.

Features
  • 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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Schematic/Block Diagram

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Design Guide

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Design Files

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TI Devices (6)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
CSD18563Q5A  60V, N ch NexFET MOSFET™, single SON5x6, 6.8mOhm  MOSFETs  Sample & Buy View Design Kits & Evaluation Modules
LM25117-Q1  Automotive Grade 4.5-42V Wide Vin, Current Mode Synchronous Buck Controller with Tracking  Step-down (buck)  Sample & Buy View Design Kits & Evaluation Modules
LMC555  World’s smallest 555 timer with low power, high accuracy and a Fmax of 3MHz  Clock & timing  Sample & Buy View Design Kits & Evaluation Modules
TPS22915  5.5V, 2A, 38mΩ Load Switch With Quick Output Discharge  Power switches  Sample & Buy View Design Kits & Evaluation Modules
TPS22965-Q1  5.5V, 4A, 16mΩ Automotive High-Side Load Switch With Adjustable Rise Time & Quick Output Discharge  Power switches  Sample & Buy View Design Kits & Evaluation Modules
TPS62090-Q1  Automotive: 3A, 2.5 to 6V input, up to 97% efficiency, 3x3 QFN, Step-Down Converter  Step-down (buck)  Sample & Buy Not Available

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
CSD18563Q5A VSONP (DQJ)| 8 Download
LM25117-Q1 Download Download
Download
LMC555 Download Download
Download
Download
TPS22915 Download -
TPS22965-Q1 Download Download
TPS62090-Q1 Download Download

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Technical Documents

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User guides (1)
Title Type Size (KB) Date
PDF 1204 10 Nov 2015
Design files (6)
Title Type Size (KB) Date
ZIP 584 09 Dec 2015
ZIP 1828 09 Dec 2015
PDF 3703 09 Dec 2015
PDF 445 09 Dec 2015
PDF 92 09 Dec 2015
PDF 1027 09 Dec 2015

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