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PQ48018QNA25PKS Datasheet(PDF) 1 Page - SynQor Worldwide Headquarters |
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PQ48018QNA25PKS Datasheet(HTML) 1 Page - SynQor Worldwide Headquarters |
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1 / 13 page  Product # PQ48018QNA25 Phone 1-888-567-9596 Doc.# 005-2QN418D_B 9/04/01 Page 1 Technical Specification 48Vin 1.8Vout 25A Quarter Quarter Brick Brick The PQ48018QNA25 PowerQor™ quarter brick converter is a next-generation, board-mountable, isolated, fixed switching frequency dc/dc converter that uses synchronous rectification to achieve extremely high conversion efficiency. The power dissipated by the converter is so low that a heatsink is not required, which saves cost, weight, height, and application effort. All of the power and control components are mounted to the multi-layer PCB substrate with high-yield surface mount technology. Since the PowerQor converter has no explicit thermal connections, it is extremely reliable. High Efficiency, No Heatsink, Isolated DC/DC Converter PQ48018QNA25 Module Mechanical Features • Industry standard pin-out configuration (pin for pin compatible with Lucent QHW series) • Industry standard size: 1.45” x 2.3” • Total height less than 0.40”, permits better airflow and smaller card pitch • Total weight: 34 grams (1.2 oz.), lower mass great- ly reduces vibration and shock problems Safety Features • 2000V, 10 M Ω input-to-output isolation provides input/output ground separation • UL 1950 recognized (US & Canada), basic insula- tion rating • TUV certified to EN60950 Safety Features (cont.) • Meets 72/23/EEC and 93/68/EEC directives which facilitates CE Marking in user’s end product • Board and plastic components meet 94V-0 flamma- bility requirements Operational Features • Ultra-high efficiency, 84% at full rated load current • Delivers up to 25 amps of output current with mini- mal derating - no heatsink required • Wide input voltage range: 35V – 75V meets or exceeds all 48V bus standards • Fixed frequency switching provides predictable EMI performance • No minimum load requirement means no preload resistors required Protection Features • Input under-voltage lockout disables converter at low input voltage conditions • Output current limit and short circuit protection protects converter from excessive load current or short circuits • Output over-voltage protection protects load from damaging voltages • Thermal shutdown protects converter from abnor- mal environmental conditions Control Features • On/Off control referenced to input side (positive and negative logic options are available) • Remote sense for the output voltage compensates for output distribution drops • Output voltage trim: +10%/-20%, permits custom voltages and voltage margining |
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