40IMX7-05-8 Datasheet, PDF (9/14 Pages) Power-One – IMX7, IMS7 Series Data Sheet 7-Watt DC-DC Converters

IMX7, IMS7 Series Data Sheet
®
7-Watt DC-DC Converters
Typical Performance Curves
V_o1 [V]
13.5
05088a
13
12.5
I_o2 = 0.03 A
12
I_o2 = 0.3 A
11.5
11
0.05 0.10 0.15 0.20 0.25 0.3 I_o1 [A]
Fig. 9
Cross load regulation (typ.) of double-output models (2 ×12
V). The cross-load effect is negligible.
η [%]
90
80
70
60
50
40
25
50
05052a
V_{i nom}
V_{i max}
V_{i min}
P_o
75
100 % _{Po nom}
Fig. 11
Efficiency versus input voltage and load.
Typical values (40IMX7-12-12-8).
V_o1, V_o2 [V]
12.8
05059a
12.4
12
V_o2
V_o1
11.6
11.2
0
30
60
90
120
150
I_o1
I_{o1 nom}
[%]
Fig. 10
Flexible load distribution on double-outputs models (2 ×12
V) with load variation from 0 to 150% of P_{o1 nom} on output 1.
Output 2 loaded with 25 % of P_{o2 nom}.
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
should be connected to Vi– to enable the output (active low
logic, fail safe).
Converter operating:
Converter inhibited
or inhibit pin i left open:
–10 V to 0.8 V
2.4 V to V_{i max}
(20/40 IMX7,
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 V_{o nom}. The output
voltage is adjustable in the range of 75 to 105% of V_{o nom}.The
circuit works for single- and double-output models in a
different way. For output voltages V_o > V_{o nom}, the minimum
input voltage V_{i min} (see Electrical Input Data) increases
proportionally to V_o/V_{o nom}.
BCD20007-G Rev AE, 14-May-2012
Page 9 of 14
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