Choosing The Best Operating Mode In An Ultra-Low-IQ Buck Converter

Focus:

Through ultra-low-power techniques and ultra-low quiescent current, a stepdown converter IC extends the battery run time in portable devices such as earbuds, sensors and smart meters. But a buck converter must still meet the performance needs of the system, such as responding to load transients from a radio or limiting noise when powering a data converter. To do this, the TPS62840 buck converter IC employs five operating modes: shutdown, power-save, forced pulse- width modulation, 100% and stop mode. This article explains their impact on IQ, their system benefits, and how each mode supplies the required performance while drawing appropriately low currents.

What you’ll learn:

• How to understand the different levels of power savings enabled by the five operating modes of the TPS62840 buck converter IC
• How to extend battery run time in portable devices such as earbuds, sensors and smart meters

View the Source

Author & Publication:

Chris Glaser, Texas Instruments, Dallas, Texas, How2Power Today, Apr 15 2020

This article summary appears
in the HOW2POWER Design Guide.

The Design Guide offers
organized access to
hundreds of articles
on dozens of power conversion
and power management topics.

The Design Guide search results
include exclusive summaries
and accurate "how to" analysis
to help you make faster,
more informed decisions.

Search
for more articles