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Load switches: Applications and selection

Posted: 06 Nov 2014     Print Version  Bookmark and Share

Keywords:power dissipation  system on chip  SoC  adaptive voltage scaling  PMIC 

To turn on and turn off power supply rails in systems, we typically employ electronic relays, particularly integrated load switches. Load switches offer many other benefits to the system and can include protection features that are often difficult to implement with discrete components. There are many different applications where load switches can be used including, but not limited to:
 • Power Distribution
 • Power Sequencing and Power State Transition
 • Reduced Leakage Current in Standby Mode
 • Inrush Current Control
 • Controlled Power down

This application note will provide the fundamental basics of what load switches are, when they should be used, and how they can be implemented in a system.

View the PDF document for more information.

Originally published by Texas Instruments Inc. at as "Load Switches: What Are They, Why Do You Need Them And How Do You Choose The Right One?".

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