Lowest Power Micro-Battery Management Integrated Circuit (Energy Harvesting & Storage USA 2010)


Mr Joe Keating, Senior Applications Engineer
Infinite Power Solutions
United States
 
Nov 16, 2010.

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Presentation Summary

Continued advancements in the combined fields of micro-energy storage and energy harvesting have driven the development of a new integrated energy management solution for self-powered wireless nodes utilizing various methods of energy harvesting to provide continuous, maintenance-free operation. A new power management integrated circuit (PMIC) is being introduced that combines all of the critical elements for effective, low cost, practical energy harvesting and storage. Considerations that have been addressed by the PMIC include:
 
  • Battery management, including under-voltage and over-voltage protection, along with high efficiency charge management suitable for ultra-low power charge sources producing less than 1µA.
 
  • Multiple output voltage regulation levels that are required to obtain the most efficient usage of the various low power microcontrollers and radio sets currently available for wireless nodes.
 
  • An extremely low quiescent current output regulator that requires less than 75nA of quiescent current to supply a regulated output, needed for the ultra-low power microcontroller sleep states and real time clocks that are being produced by major IC manufacturers, currently advertised to be well below 100nA.
 
  • Input boost conversion that allows input sources down to 200mV to be boosted to levels suitable for charging a micro-battery, such as a THINERGY® Micro-Energy Cell (MEC), and operates only when input charge energy is available, eliminating unnecessary quiescent power normally required to maintain a functioning boost charging circuit.
 
  • Built-in "off-active" operation that allows nodes to operate only when input events meet activation criteria, resulting in a power management solution that requires less than 1nA of quiescent current.
 
  • Support for cold temperature operation utilizing an external capacitor to boost cold temperature output power performance which is often a limiting factor for battery powered systems.
 
All considerations above will be discussed in detail.

Speaker Biography (Joe Keating)

Joe Keating studied electrical and computer engineering at The University of Colorado, Boulder (BS, 1990), including graduate level studies in optical-electronics. Mr. Keating began his career as an embedded electronics design engineer. Joe has over ten years of experience in battery design development and applications support. Currently, he is the Sr. Director of Applications Engineering at Infinite Power Solutions, Inc., in Littleton, Colorado.

Company Profile (Infinite Power Solutions)

Infinite Power Solutions logo
Infinite Power Solutions, Inc. (IPS)—a U.S. clean-technology company—is a global leader in manufacturing solid-state, rechargeable, thin-film, micro-energy storage devices. Founded in 2001, IPS is privately held with corporate headquarters and volume manufacturing in Littleton, Colo. The company is the only ISO 9001 certified manufacturer of all-solid-state, thin-film batteries and its energy storage products provide unrivalled performance, size and service life to displace conventional coin cells, supercapacitors, and other printed and solid-state micro-batteries in a variety of applications. THINERGY® Micro-Energy Cell (MEC) products are paper-thin and provide unprecedented efficiency in micro-energy storage and uniquely enable embedded power and ambient energy-harvesting solutions to create miniature, autonomous, perpetual power supply solutions. THINERGY MECs uniquely serve battery powered applications such as Bluetooth® Smart devices and other wireless sensors, active RFID tags, real-time clocks, powered cards, medical devices, and consumer electronics.
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