MHP270 Datasheet | Crane Aerospace - Electronics

Crane Aerospace & Electronics Power Solutions .. MHP270 Single and Dual DC/DC Converters 270 Volt input - 65 Watt Features Parallel operation with current share, up to 5 units (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 - Sync In and Sync Out - Inhibit primary side and secondary side VDC Output single models - Indefinite short circuit protection - High power density, up to 85% efficiency 5 12 15 28 dual ±5 ±12 ±15 description The MHP270 Series™ DC/DC converters provide up to 65 watts of output power over the full - 55°C to 100°C temperature range. MHP270 models operate from a MIL-STD-704 nominal 270-volt DC power bus - from 160 to 400 VDC continuous ­ operation with surges to 450 volts - and provide isolated outputs at 5, 12, 15, and 28 VDC. Parallel operation for all loading ­ conditions is supported without any requirement for external ponents. 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 k Hz, but may be synchronized at any frequency from 475 to 575 k Hz. MHP270...