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MHP270 Datasheet(PDF) 1 Page - Interpoint Corporation Company |
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MHP270 Datasheet(HTML) 1 Page - Interpoint Corporation Company |
1 / 10 page description The MHP270 Series™ DC/DC converters provide up to 65 watts of output power over -55°C to +100°C temperature range. MHP270 models operate from a MIL-STD-704 nominal 270-volt DC power bus with 160 to 400 VDC continuous operation with surges to 450 volts. Isolated outputs include 5, 12, 15, and 28 VDC singles and ±5, ±12 and ±15 VDC duals. Parallel operation for all loading conditions is supported without any requirement for external components. The converters are available with standard screening or “ES” screening MHP270 DC/DC converters are constant frequency, pulse width modulated switching power supplies which use a quasi-square wave, two-switch single-ended forward converter design. Tight load regulation is achieved through a wide-bandwidth magnetic feedback circuit. Up to five single output MHP270 converters may be used in parallel to power a single load by simply connecting the share pins of all units. Units in this configuration have an 85% current sharing accuracy over 35% load to full load conditions. MHP270 Series of converters feature a flexible synchronization scheme in which units may be synchronized to an external clock or to one another by using Sync In and Sync Out pins provided on each unit. MHP270 converters have a nominal switching frequency of 525 kHz, but may be synchronized at any frequency from 475 to 575 kHz. MHP270 converters meet a wide variety of military/aerospace performance and environmental specifications. Their continuous operation input voltage (160 to 400) meets the normal operating limits of MIL-STD-704. The unit shuts down above approximately 425 volts, but it is rated to withstand a surge of up to 450 volts for 50 milliseconds. The units are built as fully hermetic thick film hybrids in our MIL-PRF-38534 certified facilities. Features Undervoltage lock-out – shuts down when the input line voltage falls below approximately 120 VDC to provide smooth initializa- tion. Continuous short circuit protection – current limit set at approxi- mately 125%. Soft-start – controlled start-up at turn-on, release from inhibit and recovery from load fault conditions. Remote sense – Sense lines increase the output voltage to compensate for IR drops in traces and wires. The voltage compensation can be up to a maximum of 10% of nominal output voltage to maintain tightly regulated voltage at the load. Output VOltage OptiOns The MHP270 Series converters are capable of providing other output voltage options in addition to those characterized on this datasheet. Contact your sales representative to discuss other output voltage options, www.interpoint.com/contacts. us patents Interpoint converters may use one or more of the following US patents 5,521,807, 5,694,303, and 5,631,822. MODELS VDC Output single 5 12 15 28 Dual ±5 ±12 ±15 Features parallel operation with current share, up to 5 units (up to 276 watts) Operating range -55° to +100°C • Input voltage 160 to 400 VDC • Transient protection 450 V for 50 ms • Fully isolated, magnetic feedback • Fixed high frequency switching • Remote sense on single models • Inhibit primary side and secondary side • Sync In and Sync Out • Indefinite short circuit protection • High power density, up to 85% efficiency • Crane Aerospace & Electronics Power Solutions MHp270 single and dual dc/dc converters Crane Aerospace & Electronics Electronics Group (Interpoint Brand) POBox97005•RedmondWA98073-9705 425.882.3100•power@crane-eg.com www.interpoint.com Page 1 of 10 270 Volt input – 65 Watt MHP270 Rev G - 20100517 |
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