Tuesday, May 22, 2018
Publication Date: 09/1/2009
Archive >  September 2009 Issue >  New Products > 

Calex DC/DC Converter Has Wide Input Range
DC/DC converter.
Concord, CA — Calex Mfg. Co., Inc. has added 28 and 48VDC output models to the TH 200 Watt series of DC/DC converters. The TH Series has an ultra-wide 9 to 36V input range which accommodates 12V batteries, 24V industrial and 28V COTS military applications.

The TH models provide a true 9 to 36V input range with start-up down to 9VDC. All models can be modified for start-up below 9VDC for particularly demanding applications. The TH is housed in a cast case and potted with a thermally conductive potting compound providing an innovative ruggedized solution at competitive commercial pricing. In addition to the 4:1 input range, the TH offers pulse by pulse current limiting, over-temperature protection, and auto softstart. The output voltage of the TH also has a very wide trim range, from -35 to +10 percent of the nominal Vout. The TH also provides remote sense for voltage regulation directly at the load. The TH has zero turn-on overshoot and a temperature coefficient of only 0.005 percent/C.

The converter, unlike many half-brick solutions on the market, will fully regulate the output down to a no-load condition. Load Regulation and Line Regulation is 0.02 percent and 0.01 percent respectively. Load Transient Overshoot is 4 percent and Load Transient Recovery Time is 200µs. The TH includes Remote ON/OFF which is particularly useful for battery applications. The idle current in the OFF state is only 40mA.

The case operating temperature range is -40 to +100°C. The storage temperature is -40 to +120°C. The case thermal shutdown temperature is 105°C. The cast case is designed with threaded through holes to allow easy mounting or the addition of a heatsink for extended temperature operation. The MTBF of the TH is over 1M hours. The unit is designed to meet UL/cUL 60950 and IEC/EN 60950-1. It is available with RoHS and non-RoHS construction, depending on the application requirements.

Contact: Calex Mfg. Co. Inc., 2401 Stanwell Drive, Concord, CA 800-542-3355 or 925-687-4411 fax: 925-687-3333 E-mail: calex@calex.com www.calex.com Web:

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