New Industry Products

Calex Adds Wide Input Range 200W DC-DC Converter

July 27, 2009 by Jeff Shepard

Calex Mfg. Co., Inc. announces the addition of 28 and 48Vdc output models to the TH 200W series. The TH series features an ultra wide 9 to 36V input range which accomodates 12V battery, 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. Calex states that it now is offering products such as the TH which bridge the gap between purely commercial solutions and the demanding requirements of automotive, industrial and COTS military applications.

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% 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%/C. According to Calex, the TH, 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% and 0.01% respectively. Load Transient Overshoot is 4% and Load Transient Recovery Time is 200us. 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 temperature operating range for the TH 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 units is designed to meet UL/cUL 60950 and IEC/EN 60950-1. The TH is available with RoHS and non-RoHS construction, depending on the application requirements.

The TH is priced at $115.50 (1000). Units are available from stock to 6 weeks.