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FC100V5A Datasheet(PDF) 5 Page - Power-One |
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FC100V5A Datasheet(HTML) 5 Page - Power-One |
5 / 41 page MCD10059 Rev. 1.1, 21-Jan-10 Page 5 of 41 www.power-one.com F & FC Series DC-DC Converter Input Filters F4804A, 0-80V, 4 Amps, SMT Mount Thermal Considerations Because of low series internal DC resistance, the F4804A filter generally does not require airflow and/or derating to ambient temperatures up to 85 ˚C, if placed and interconnected as described below. Good thermal design includes the appropriate placement of the filter on the system board as to maximize heat exchange through the power pins. For high temperature operation in low airflow environments, use of 1-2 oz copper for the external connection pads and provision for some extra copper at all four I/O pins is encouraged. Good thermal connection to the power planes is important. To check filter thermal characteristic in an actual system environment, attach a thermocouple to the top of each inductor. The maximum temperature at these test points should not exceed 120 ˚C. A typical application schematic is shown in Fig. 5. The filter can be used to power one or more converters. For applications requiring filter current greater than 4 A divide the converters into smaller groups and use multiple filters or use a F4810 or F2410 filter which is capable of providing up to 10 A. Do not connect filters in parallel. Rload1 F4804A Input Filter Vin (+) Vin (-) ON/OFF Vout (+) Vout (-) TRIM SENSE (+) SENSE (-) (Top View) Converter DC-DC (Top View) C8 C2 C4 Vin- Vin+ F1 5 A CY2 CY1 + C1 C5 Rload2 Vin (+) Vin (-) ON/OFF Vout (+) Vout (-) TRIM SENSE (+) SENSE (-) (Top View) Converter DC-DC C9 C3 C6 C7 Fig. 5: F4804A - Typical application |
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