Sunday, June 24, 2018
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DC/DC Input Power Conditioning Module from Calex
Input power conditioning module.
Concord, CA — Calex Mfg. Co. has introduced the PQ-28 DC input conditioning module. The made-in-U.S.A. product has an extremely wide (10:1) input range of 11 to 100VDC. The unit is rated up to 200 Watts and is housed in a compact 2.28 x 2.4 x 0.5-in. (57 x 61 x 13mm) package.

The PQ-28 is designed to interface with the MIL-STD-1275, 28VDC power bus and is designed to meet UL60950. It is optimized for use with the company's DC/DC converters and is especially suitable for an ultra-wide input range front end or alternatively as a module for MIL-STD-1275 compliance.

The module's efficiency 95 percent, and the switching frequency is 200kHz. Load regulation is typically 0.1 percent, and the temperature coefficient is 150 ppm/°C. The baseplate-to-pin isolation is 700VDC, and the case operating temperature range is -40 to +100°C.

The MTBF according to MIL-HDBK-217F is just over 170k hours. All units offer input reverse polarity protection as well as short circuit protection with auto restart.

Contact: Calex Mfg. Co., Inc., 2401 Stanwell Dr., Concord, CA 94520-4841 800-542-3355 or 925-687-4411 fax: 925-687-3333 E-mail: Web:

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