IMX7, IMS7 Series Data Sheet
7-Watt DC-DC Converters
®
Part Number Description
Input voltage range Vi
40 IMX7 - 05 - 05 -8 Z G
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 TA
–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
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.
03042b
Functional Description
1
11
Vi+
Vo1+
The IMX7/IMS7 Series DC-DC converters are feedback-
controlled flyback converters using current mode PWM (Pulse
Width Modulation).
4
3
Trim
i
10
13
Vo1–
Vo2+
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
Vo nom, using either an external resistor or an external voltage
source.
PWM
2
12
14
Vo2–
n.c.
Vi–
2 × 2200 pF
For double-output models, the output voltage is sensed by a
separate transformer winding close to the secondary and fed
Fig. 2
03025a
Block diagram of dual-output models
1
3
11
Vi+
Vo+
Vo–
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 Vo nom by means of an external
resistor, or within 75 to 100% of Vo nom, using an external
voltage source.
PWM
i
10
12
2 × 2200 pF
1500 V
2
4
Vi–
Current limitation is provided by the primary circuit, thus
limiting the total output current (Io nom for the single- and the
sum Io1 nom + Io2 nom for double-output models).
13
14
R
n.c.
n.c.
The inhibit input i allows remote control of the outputs; pin i
must be connected to Vi– to activate the converter.
Fig. 1
Block diagram of single-output models
BCD20007-G Rev AE, 14-May-2012
Page 3 of 14
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