40IMX7-05-8 Datasheet, PDF (4/14 Pages) Power-One – IMX7, IMS7 Series Data Sheet 7-Watt DC-DC Converters

IMX7, IMS7 Series Data Sheet
®
7-Watt DC-DC Converters
Electrical Input Data
General conditions:
– T_A = 25 °C, unless T_C is specified.
– Connector pin i connected with Vi–.
– Trim or R input not connected.
Table 2a: Input data of IMX7
Input
20IMX7
40IMX7
70IMX7
110IMX7
Characteristics
Conditions
min typ max min typ max min typ max min typ max Unit
V_i
Input voltage range¹
V_{i nom} Nominal input voltage
T_{C min} – T_{C max}
I_o = 0 – I_{o nom}
8.4
36 16.8 ⁶
75 40
121 60
150 V
20
40
70
110
V_{i sur} Repetitive surge voltage abs. max input (3 s)
50 ⁵
100
150
t_{start up} Converter ² switch on Worst case condition at
start-up time _{inh. release} V_{i min} and full load
0.25 0.5
0.1
0.25 0.5
0.1
0.25 0.5
0.1
0.25 0.5 s
0.1
t _rise
Rise time ²
V_{i nom}
resistive load
5
I_{o nom capacitive load}
12
5
5
5
ms
12
12
12
I_{i o}
No load input current
I_o = 0, V_{i min} – V_{i max}
15 30
8 15
8 15
8 15 mA
C_i
Input capacitance
(for surge calculation)
4.7
0.5
0.2
0.2
µF
V_inh Inhibit voltage
converter operating
–10
+0.8 –10
+0.8 –10
+0.8 –10
+0.8 V
converter inhibited
2.4
V_{i max} 2.4
V_{i max} 2.4
V_{i max} 2.4
V_{i max}
or open
or open
or open
or open
I_inh
Inhibit current
converter operating
– 0.5
– 0.5
– 0.5
– 0.5
mA
converter inhibited
1
1
1
1
I_{i inh} Input current when the
converter is inhibited
V_{i min} – V_{i max}
3
3
3
3
I_{inr p} Inrush peak current
V_i = V_{i nom} ⁴
3.8
3.7
4.2
5.6
A
f_s
Switching frequency
V_{i min} – V_{i max}, I_o = 0 – I_{o nom} approx. 400
approx. 400
approx. 400 approx. 300 kHz
I _{i rr}
V_{i RFI}
Reflected ripple current
Input RFI level conducted
I_o = 0 – I_{o nom}
EN 55022 ³
50
A
30
A
20
A
10 mA_pp
A
1 _{Vi min will not be as stated, if Vo is increased above Vo nom by use of the R or Trim input. If the output voltage is set to a higher value, Vi min}
will be proportionally increased.
2 _{Measured with a resistive and the max. admissible capacitive load.}
3 _{Measured with a lead length of 0.1 m, leads twisted. Double-output models with both outputs in parallel. 70/110 IMX7 models need an}
external capacitor at the input, e.g., 1 µF film or ceramic.
4 _{Source impedance according to ETS 300132-2, version 4.3, at Vi nom.}
5 _{The DC-DC converter shuts down automatically at approx. 38 V.}
6 _{Operation at lower input voltage possible: Po approx. 80% of Po nom at Vi min = 14.4 V.}
V_o
V_{o nom}
t_rise
04008a
t
t_{start up}
Fig. 3
Converter start-up and rise time
BCD20007-G Rev AE, 14-May-2012
Page 4 of 14
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