DC/DC Converters provide 75 watt triple output.

Press Release Summary:



HE Series converters are packaged in 1/2 brick case and provide 3 regulated DC outputs. Input ranges are 18 to 36 Vdc and 36 to 75 Vdc. Primary output voltages are 3.3 V at 20 A or 5 V at 15 A, and auxiliary outputs are +/-12 or +/-15 V at 2A. Units include isolation voltage of 1544 Vdc from input to output, switching frequency of 430 KHz, and thermal shutdown with auto restart for fail safe operation. Efficiencies run as high as 88%.



Original Press Release:


Triple Output DC/DC Converter


Calex Manufacturing Co. of Concord California announces the 75 Watt triple output HE DC/DC Converter Series. The HE Series is packaged in an industry standard 1/2 brick case. All models provide three precisely regulated DC outputs with low noise and high efficiency. Two input ranges are available, 18 to 36 VDC and 36 to 75 VDC. The primary output voltages are 3.3 Volts at 20 A or 5 Volts at 15A. The auxiliary outputs are ±12 or ±15 Volts at ±2 A. The user can load share on the outputs as long as the maximum power on all three outputs does not exceed 75 Watts.

The HE Series provides isolation input to output. Isolation voltage is 1544 VDC for all models. The switching frequency is 430 KHz. Efficiencies run as high as 88%. The HE Models provide excellent thermal performance with a metal baseplate for heat sinking in extended temperature applications. The case temperature operating range for the HE Series is -40° to 100°C. The converters feature thermal shutdown with auto restart for fail safe operation. The case size is 2.28" x 2.4" x 0.55"H.

The output noise is 66 mV peak to peak for the 3.3 Volt output and 100 mV peak to peak for the 5 Volt output. The auxiliary outputs offer noise levels of 150 mV peak to peak for the ±12 Volt outputs and 200 mV peak to peak for the ±15 Volt outputs. The temperature coefficient for the primary outputs is very low at 0.003%/°C typical. The auxiliary output temperature coefficient is 0.02%/°C typical. Line and load regulation is 0.01% and 0.05% respectively for the primary output. Line and load regulation for the auxiliary outputs are 0.5% and 2% respectively.

The HE Series features remote on-off for power conservation. The unit also provides voltage trim and sense for compensating for voltage drops due to long leads, temperature, etc. The trim range is ±10%. The HE Series also features pulse by pulse current limiting with short circuit frequency foldback, auto soft-start, and volt-seconds clamp. All Calex DC/DC Converters are backed by Calex's five year warranty.

List price for the HE Triple Series is $118. 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.

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