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V048K015T80 Datasheet(PDF) 11 Page - Vicor Corporation |
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V048K015T80 Datasheet(HTML) 11 Page - Vicor Corporation |
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11 / 20 page  Vicor Corporation Tel: 800-735-6200 vicorpower.com V•I Chip Voltage Transformation Module Rev. 1.6 Page 11 of 20 45 PRELIMINARY Configuration Options (Cont.) with 0.25'' Pin Fins (V•I Chip recessed into PCB) IN–BOARD MOUNT 11.7 0.46 21.5 0.85 32.0 1.26 Figure 22— In-board with Pin Fins – package L ON–BOARD MOUNT with 0.25'' Pin Fins 22.0 0.87 32.0 1.26 14.0 0.56 Figure 23— On-board with Pin Fins – package G mm in mm in Figure 24—VTM test circuit F1 +In PC SG TM –In Temperature Monitor +Out –Out Load + – 100 µF C3 7 A Fuse C1 100 µF Al electrolytic VTM R2 2K Ω D1 Notes: C3 should be placed close to the load. D1 power good indicator will dim when a module fault is detected. TM should always be referenced to SG. SW1 Enable/Disable Switch + – Input reflected ripple measurement point C2 0.47 µF ceramic Application Note Parallel Operation In applications requiring higher current or redundancy, VTMs can be operated in parallel without adding control circuitry or signal lines. To maximize current sharing accuracy, it is imperative that the source and load impedance on each VTM in a parallel array be equal. To achieve matched impedances, dedicated power planes within the PC board should be used for the output and output return paths to the array of paralleled VTMs. This technique is preferable to using traces of varying size and length. The VTM power train and control architecture allow bi-directional power transfer when the VTM is operating within its specified ranges. Bi-directional power processing improves transient response in the event of an output load dump. The VTM may operate in reverse, returning output power back to the input source. It does so efficiently. |
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