The market for sub-watt (up to 500-mW) thermoelectric energy harvesting is predicted to grow at a compounded annual growth rate of over 30% between 2013 and 2019 to exceed 20 million units by 2020, according to a recent report by research firm Infinergia. Most of that growth is expected to take place in four key market segments: Industrial, transportation, infrastructure/buildings, and consumer.
The report on thermoelectric energy harvesting analyzes key market segments - including infrastructure/building, industrial, transportation, and consumer - through 15 applications drawing up to 500 mW, such as sensors and other low-power devices.
Most of the units sold are expected to be in the infrastructure/buildings segment, where thermoelectric generators -- like solar and vibrational energy harvesters -- are already being used and the technology is relatively mature. The consumer and transportation segments offer the potential for the fastest growth, with many applications and TEG technologies only just beginning to emerge. For more, see "Sub-watt thermoelectric energy harvesting: industry and market analysis."
In product news, Integrated Device Technology has introduced a compact 2-W wireless power receiver and battery charger. The IDTP9026 has a solution size requirement of less than 30 square millimeters and is fully compliant with WPC-1.1 standards.
A family of digital power monitor ICs from Intersil supports a common-mode input voltage range of 0 to 60V. The ISL2802x devices provide bidirectional high-side and low-side digital current sensing and voltage monitoring using an integrated 16-bit ADC.
Linear Technology has announced a 60-V synchronous boost controller that replaces the boost diode with a high-efficiency N-channel MOSFET. The LTC3769 delivers 24 V at up to 5-A output from a 12-V input with up to 98% efficiency.
ON Semiconductor has introduced an integrated lithium-ion battery protection controller for smartphones and tablets. The LC05111CMT features an integrated power MOSFET and an RSSon of 11 mΩ.
Spansion has expanded its family of MB39C031 DC/DC buck-converter, programmable PMICs. The S6AP412A devices supply three channels of power on a single chip to SoC products to enable flexible and precise power supply sequence control.
Power Sources Unlimited has unveiled new-generation AC/DC power supplies in low-profile metal enclosures offering from 15 to 320 W. The TXM Series features a universal input and single outputs from 3.3 to 48 VDC ±10 adjustable output voltages in nine power ranges.
Finally, Pulse Electronics has introduced new gate drive transformers for high-efficiency DC/DC converters. The 8.25 x 6.9 x 3-mm surface-mount PG1427 series features a HIPOT of 2700 VDC and functional insulation between the gate and the drive windings.