DC to DC Power Supplies (Converters)
Half-Brick DC/DC Converters deliver 100 watts.
Press Release Summary:
Series HEW offers input ranges of 9-36 and 18-75 Vdc with output voltages of 3.3, 5, 12, 15, and 24 Vdc. Input range allows operation from 12 V battery, 24 V industrial bus power, and 48 V telecom sources. With switching frequency of 325 kHz and efficiencies as high as 88%, units feature undervoltage lockout and input reverse voltage protection. Output noise is as low as 20 mV rms, and line and load regulation is 0.01% and 0.02% respectively.
Original Press Release:
Wide Input Range 100 Watt Half Brick DC/DC Converter
Calex Mfg. Co., Inc. of Concord California announces the 100W HEW Single Output Series. These half brick DC/DC converters offer an ultra-wide input range of 9-36VDC and 18-75VDC. Output voltages available are 3.3, 5, 12, 15 and 24VDC. The input range allows operation from 12V battery, 24V industrial bus power and 48V telecom sources.
The Switching Frequency of the 100W HEW Series is 325 kHz. Efficiencies, even with the wide input range, run as high as 88%. The units feature undervoltage lockout and input reverse voltage protection. Turn-on Overshoot with the HEW Series is non-existent and shown on the data sheet as 0%. Output noise is as low as 20mV RMS. Line and Load regulation is 0.01% and 0.02% respectively. Short circuit protection is provided by pulse by pulse current limiting with frequency foldback and dead short shut down. Input to output isolation is 1544VDC for 48V nominal input models and 700VDC for 24V nominal input models.
Other features include ON/OFF, Remote Sense and Trim. OFF idle current is only 2mADC. The trim range is specified at ±10%. Line regulation under remote sensing is 0.02% and load regulation under remote sensing is 0.05%. The Half Brick case size measures 2.28" x 2.4" x 0.55"H. The unit offers an aluminum baseplate for improved thermal performance and is potted making the HEW ideal for still air or limited airflow applications. The baseplate operating temperature is -40°C to +100°C. The HEW features thermal shutdown. UL60950 and EN60950 approvals are pending.
Pricing is $55 (OEM qty). Units are available from stock. For more information contact Paul Cuff, CALEX Mfg. Co., Inc., 2401 Stanwell Dr., Concord, CA, 94520 web: www.calex.com email: sales@calex.com, ph: 800-542-3355 or 925-687-4411, fax: 925-687-3333.
