40IMX7-05-8 Datasheet, PDF (3/14 Pages) Power-One – IMX7, IMS7 Series Data Sheet 7-Watt DC-DC Converters

IMX7, IMS7 Series Data Sheet
®
7-Watt DC-DC Converters
Part Number Description
Input voltage range V_i
8.4 – 36 V .............................................. 20
14 – 36 V ............................................... 24
16.8 – 75 V ............................................ 40
36 – 75 V ............................................... 48
40 – 121 V ............................................. 70
60 – 150 V ........................................... 110
Series .............................................................. IMX7, IMS7
Output voltage of output 1 ...................... 03, 05, 12, 15, 24
Output voltage of output 2 ............................ 05, 12, 15, 24
Operating ambient temperature T_A
–40 to 85 °C ............................................... -8
–40 to 71 °C ............................................... -9
Options:
Surface mount version¹ ........................................... M
Open frame¹ ..................................................................... Z
RoHS-compliant for all six substances ...... G
40 IMX7 - 05 - 05 -8 Z G
Obsolete option: C-pinout .............................................. C
1 _{Option M and Z exclude each other.}
Note: The sequence of options must follow the order above.
Example: 40IMX7-05-05-8ZG: DC-DC converter, input voltage range 16.8 – 75 V, 2 outputs providing each 5 V, 700 mA,
temperature range – 40 to 85 °C, open frame, RoHS compliant for all six substances.
Functional Description
The IMX7/IMS7 Series DC-DC converters are feedback-
controlled flyback converters using current mode PWM (Pulse
Width Modulation).
In the case of single-output models, the output is directly
sensed and fed back to the primary control circuit via a pulse
transformer, resulting in tight regulation of the output voltage.
The R input is referenced to the secondary side and allows for
programming the output voltages in the range 75 to 105% of
V_{o nom}, using either an external resistor or an external voltage
source.
For double-output models, the output voltage is sensed by a
separate transformer winding close to the secondary and fed
Vi+ 1
03025a
11 Vo+
PWM
i3
V i– 2
2 × 2200 pF
1500 V
n.c. 4
Fig. 1
Block diagram of single-output models
10
Vo–
12
13 R
14 n.c.
Vi+ 1
03042b
11 Vo1+
Trim 4
i3
PWM
10 Vo1–
13 Vo2+
Vi – 2
2 × 2200 pF
12 Vo2–
14 n.c.
Fig. 2
Block diagram of dual-output models
back to the primary control circuit. Close magnetic coupling is
provided by the planar construction, ensuring very good
regulation, and allowing for flexible load distribution. The Trim
input of double-output models is referenced to the primary
side, and allows for programming the output voltages in the
range of 100 to 105% of V_{o nom} by means of an external
resistor, or within 75 to 100% of V_{o nom}, using an external
voltage source.
Current limitation is provided by the primary circuit, thus
limiting the total output current (I_{o nom} for the single- and the
sum I_{o1 nom} + I_{o2 nom} for double-output models).
The inhibit input i allows remote control of the outputs; pin i
must be connected to Vi– to activate the converter.
BCD20007-G Rev AE, 14-May-2012
Page 3 of 14
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