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24IMS7-12-9C Datasheet(PDF) 9 Page - Power-One |
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24IMS7-12-9C Datasheet(HTML) 9 Page - Power-One |
9 / 15 page ® BCD20007-G Rev AD, 4-Nov-09 Page 9 of 15 www.power-one.com IMX7/IMS7 DC-DC Series Data Sheet 7-Watt DC-DC Converters Fig. 10 Flexible load distribution on double-outputs models (2 ×12 V) with load variation from 0 to 150% of Po1 nom on output 1. Output 2 loaded with 25% of Po2 nom. Vo1, Vo2 [V] Io1 Io1 nom 05059a 12.8 12.4 12 11.6 11.2 030 60 90 120 150 [%] Vo2 Vo1 Typical Performance Curves Fig. 9 Cross load regulation (typ.) of double-output models (2 ×12 V). The cross-load effect is negligible. 11 11.5 12 12.5 13 13.5 Vo1 [V] 0.10 0.15 0.20 0.25 0.3 Io1 [A] 0.05 05088a Io2 = 0.3 A Io2 = 0.03 A Auxiliary Functions Inhibit Function The output(s) of the converter may be enabled or disabled by means of a logic signal (TTL, CMOS, etc.) applied to the inhibit pin. No output voltage overshoot will occur, when the converter is turned on. If the inhibit function is not required, the inhibit pin Vi+ Vi – i 06070 Fig. 11 Efficiency versus input voltage and load. Typical values (40IMX7-12-12-8). 40 50 60 70 80 90 05052a 25 50 75 100 % Po Po nom Vi nom Vi max Vi min η [%] Fig. 12 If the inhibit is not used, the inhibit pin should be connected to Vi– should be connected to Vi– to enable the output (active low logic, fail safe). Converter operating: –10 V to 0.8 V Converter inhibited or inhibit pin i left open: 2.4 V to Vi max (20/40IMX7, 24/48IMS7) 2.4 V to 75 V (70/110IMX7) Adjustable Output Voltage As a standard feature, all IMX7 and IMS7 converters offer adjustable output voltage(s) by using a control pin. If this pin is left open-circuit, the output voltage is set to Vo nom. The output voltage is adjustable in the range of 75 to 105% of Vo nom.The circuit works for single- and double-output models in a different way. For output voltages Vo > Vo nom, the minimum input voltage Vi min (see Electrical Input Data) increases proportionally to Vo/Vo nom. |
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