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20IMX4-05-8 Datasheet, PDF (3/12 Pages) Power-One – IMX4 Series Data Sheet 4 Watt DC-DC Converters | |||
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IMX4 Series Data Sheet
®
4 Watt DC-DC Converters
Functional Description
The IMX4 Series converters are feedback-controlled flyback
converters using current mode PWM (Pulse Width
Modulation). The input is protected against transients by
means of a suppressor diode.
The output voltage is monitored by a separate transformer
winding close to the secondary windings and fed back to the
control circuit.
Current limitation is provided by the primary circuit, thus
limiting the total output current (Io nom for single- and the sum
Io1 nom + Io2 nom for dual-output models).
The close magnetic coupling provided by the planar
construction ensures very good regulation and allows for
flexible load distribution on dual-output models.
Vi+ 1
n.c. 2
Viâ 24
PWM
03046
13 Vo+
12 Voâ
Fig. 3
Block diagram for single-output models with alternative
pinout (option K).
Vi+ 22
23
2
Viâ 3
PWM
03044
14 Vo+
16 Voâ
10
Fig. 1
Block diagram for single-output models with standard
pinout.
Vi+ 22
23
PWM
03045
14 Vo+
16 Go
Vi+ 1
Viâ 24
PWM
03047
15 Vo+
10
Go
11
13 Voâ
Fig. 4
Block diagram for dual-output models with alternative
pinout (option K).
2
Viâ 3
11 Voâ
Fig. 2
Block diagram for dual-output models with standard
pinout.
BCD20006-G Rev AC, 06-Jul-2012
Page 3 of 12
www.power-one.com
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