Littleton, Mass.—XP Power says its single-output ECM100 AC/DC power supply, which delivers up to 100 watts, is at least one-third smaller than the industry's nearest competitor. These universal-input supplies, for industrial and medical applications, have a footprint of just 4.5-by-2.5 inches and are 1.2 inches high, thus setting claim on an industry-leading power density of 7.4 W/in3.
The supply's compact design owes to several techniques designed to drastically cut hardware. The flyback converter's continuous/discontinuous mode of operation enables a much smaller transformer. The high-efficiency supply includes just two heatsinks; half the number required in most alternative designs, according to the company.
The initial series offerings provide from 3.3 to 48 VDC in 10 models. These include 3.3 volts (maximum of 20 amps), and 5, 7, 9, 12, 15, 18, 24, 33, and 48 volts at up to the maximum specified power for 5 CFM cooling.
Features include a line regulation of ±5 percent, load regulation of ±1 percent, and ripple and noise of 1 percent p-p. Transient response is 500 microseconds for a 25 percent load change for a recovery of within 1 percent of set output voltage, with maximum deviation of 4 percent. Operating efficiency is
as high as 87 percent.
Outputs are adjustable by ±5 percent on the 3.3-and 5-volt models and by ±10 percent on the other models. There is no minimum load requirement. The power supplies have over-temperature, over-voltage, and overload protection built in. These supplies are rated for operation over 0 to +80°C. They are compliant to Class I and Class II medical specifications, all major safety specifications, EN61000-3-2,-3, and EN55022 Level B performance for conducted emissions. Leakage current is less than 100 microamps at 115 VAC and less than 200 microamps at 230VAC. Inrush current is 40 amps maximum at 230 VAC, with the input protected by 3 amp fuses in both line and neutral. Input to output isolation is 4 kVAC.
Dual-, triple-, and quadruple-output supplies are scheduled for the next round of development (for a total of 25 models in the family), with the second output providing up to 15 watts at 3.3 volts and progressing to 48 watts at 24 volts. The third and fourth outputs will be auxiliary sources delivering 500 to 800 mA at various voltages ( 5, -5, 12, -12, 15, or -15 at 800 mA for first auxiliary output, -5, -12, or -15 at 500 mA for second auxiliary output). The supplies are slated for announcement in 1Q 2006.
The preliminary product datasheet can be secured indirectly by going to the company website, clicking North America (lower right hand corner of screen) and performing a part search (upper right hand corner of screen) for the ECM100. The ECM100 is priced at $52 each in 1k units. Contact Duane Darrow.
XP Power, 1-978-287-7260, www.xppower.com