HomeIndustry news 90% Efficient Energy Harvesting PMIC

90% Efficient Energy Harvesting PMIC

June 29, 2015 By admin Comments are Off

SiliconReef has announced its first product, the EH01, a complete power management solution for a variety of energy-harvesting applications, providing a small and simple solution combining power from different sources: a dc wall adapter, photovoltaic cells and a Li-Ion battery. This device enables a simple implementation of a 5V supply, like a USB charger compatible with the ITU standard for the Universal Charging Solution (L.1000). The chip is packaged in a 20 contact 5mm by 5mm QFN package.

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Using a high efficiency dc-dc converter the EH01 converts the voltage from the panel to a stable 5V output. In addition a Li-Ion Battery Charger (with numerous protection features) stores the excess energy from the panel in an external battery. This battery then complements the energy to the dc-dc converter when needed.

The EH01 also provides an interface for battery status monitoring. This can be done via a simple button making a LED pulse or via a microcontroller based serial communication. Features include: Complete all-in-one management of energy-harvesting process; Works with both solar panels or conventional wall adapters; Regulated 5V output power port withstanding currents up to 1.2A (see 1.2A Solar/Wall USB Charger application); Operation mode consumption below 5mW; Total conversion efficiency above 90%; Stand-by consumption less than 500μW; and Battery Monitoring via Led or Serial Interface.
 
source: http://www.powerpulse.net/story.php?storyID=32506

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