Calex Mfg. Co. Inc., Concord CA, announces the addition of 28 and 48 V DC output models to the TH 200 W series. The TH Series features an ultra wide 9 to 36 V input range that accomodates 12 V battery, 24 V industrial and 28 V COTS military applications. The TH models provide a true 9 to 36 V input range with start-up down to 9 VDC. All models can be modified for start-up below 9 VDC 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, known for over 40 years to provide reliable cost-effective commercial solutions, is now 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. 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 200 us. 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 +100C. The storage temperature is -40 to +120C. The case thermal shutdown temperature is 105C. 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 six weeks. As with all Calex DC/DC converters, the TH is backed by Calex's five-year warranty.
For information, see Italian Representative CELTE SRL Via Piero Gobetti 2/A Milan tel: 0039 02 92108020 or visit Booth 906 at EuMW 2009 in Rome, Italy.