Power: dc supplies, UPS, dc/dc research

Recent developments in the power area include new dc output power supplies with variable ac input, new uninterruptible power supplies, and market research showing solid growth in dc/dc devices.

05/05/2005


Recent developments in the power area include new dc output power supplies with variable ac input, new uninterruptible power supplies, and market research showing solid growth in dc/dc devices. Companies involved include ASI Inc. , Falcon Electric , Tripp Lite , and VDC .


New CSF power supplies from ASI Inc. are UL listed.

ASI Inc. released new CSF Series 5, 12, 24 and 48 V dc output power supplies (8; 6 and 8; 3 and 5; and 2.5 amps respectively). They feature pluggable terminal-block connections for easy installation and replacement; auto-ranging 90-264 V ac input for international applications; short circuit, overload, and over-temperature protection for long-term reliable operation; and a high efficiency design to reduce heat and increase life. CSF3 and the CSF5 are also offered in a P or parallel version for use in redundant applications without the need for additional components. Parallel versions also feature an alarm contact to provide a signal in the event of a failure. Pricing and specifications can be found at the ASI website. Online orders save 20-50% over other methods of purchase, ASI says.


SG Series 5 and kVA UPS Plus options include frequency and voltage conversion; a make-before-break maintenance bypass, and extended battery packs and charger options.

Falcon Electric unveils new on-line sinewave uninterruptible power supplies (UPSs). SG Series 5 and 6 kVA UPS Plus feature a galvanically isolated input of either 120 V ac or 230 V ac and an output of 208/220/230/240 V ac. The input galvanic isolation gives an extra layer of protection for sensitive equipment, helping protect against localized, high level power pollution problems, fast high-voltage transients, lightning, grounding problems, and common mode noise. Falcon says such galvanic isolation is not found in most other 5 and 6 kVA UPSs. Remote management and monitoring functions are available through a standard RS-232 port, or an optional TCP-IP addressable SNMP/HTTP board through a standard 10BaseT Ethernet port.

Tripp Lite UPS System Selector has been upgraded to more quickly help customers locate the best Tripp Lite uninterruptible power system to match power-protection requirements. Editable side-by-side feature comparison charts are included, along with ability to limit preferences to reduce number of matches, improved backward navigation, and ability to save and send results.

2004 global merchant market for dc/dc devices (dc/dc converters, dc/dc regulators, and PWM/PFM controllers) was $5.5 billion in 2004 and is expected to be $7.8 billion in 2008, according to a new market study by Venture Development Corp . VDC gives several reasons for growth. Proliferation of lower voltages at higher current levels has fueled increased use of distributed power architecture with point of loads across more applications. The semiconductor industry had a substantial recovery in 2004, achieving the peak historic levels of year 2000; steady growth is expected to build on the 2004 shipments. Original equipment manufacturers are building systems that require more current, lower voltages, and additional voltages. These needs will drive more expensive feature sets, VDC says.

—Mark T. Hoske, editor-in-chief, Control Engineering, MHoske@cfemedia.com





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