7 ? ericsson microelectronics, august 2000 pka 2000 series - eripower? 25-40 watt dc/dc power modules the 25-40 watts pka series dc/dc power modules are designed for decentralized 24/28 v dc systems with distributed on-board dc/dc converters. by using thick-film technology, which provides a high degree of integration as well as efficient thermal management, and by using a 300 khz switching frequency based on proprietary drive and control chips, these highly reliable products comply to demanding applications within e.g. cellular radio, medical, industrial and airborne industry. input to output isolation is 500 v dc on the pi versions, while the p versions outputs are non- isolated but floating, i.e. single output versions can efficiency 80-85% mtbf > 2,000,000 hours at +75 c case temperature single, dual and triple outputs no derating within ?45 c to + 85 c ambient and max. +115 c case temperature complete - no extra filters or heatsinks required be connected either positive or negative potential related to 0 v. mechanical ruggedness, in conformance with iec 68-2, is close to requirements for discrete components. extreme temperature conditions can be met since the converters can operate with full output power in ambient temperatures ranging from C 45 to +85 c or up to +115 c case temperature, making the products ideal also for applications in environments without temperature control. 76.0 x 76.0 x 17.8 mm (2.99 x 2.99 x 0.7 inch) non- isolated on-card v i v o /i o max isolated isolated o/p 1 o/p 2 o/p 3 on-card off-card 19?35 v dc 5v/5a 25 w pka 2212p pka 2211pi pka2211ci 19?35 v dc 5v/8a 40 w pka 2411pil 19?35 v dc 12v/2a 12v/2a 30 w pka 2323pi pka2323ci 19?35 v dc 15v/1.6a 15v/1.6a 30 w pka 2325pi pka2325ci 19?35 v dc +5v/5a +12v/1a -12v/1a 25 w PKA2231P PKA2231Pi pka2231ci 19?35 v dc +5v/5a +15v/1a -15v/0.8a 25 w pka2232p pka2232pi pka2232ci 19?35 v dc +5v/8a +15v/2a -15v/2a 40 w pka2432pil p o max
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