110IMY15-15-15-8 Power-One, 110IMY15-15-15-8 Datasheet - Page 4

• Manufacturer Part Number: 110IMY15-15-15-8
• Description: Imx15/ims15/ Imy15 Dc-dc Series
• Manufacturer: Power-One

Functional Description
The IMX15/IMS15/IMY15 Series DC-DC converters are
magnetic feedback-controlled flyback converters using current
mode PWM (Pulse Width Modulation). The -05- and -0503-
output voltage models, as well as all double-output models
fitted with option R, exhibit an active magnetic feedback loop
via a pulse transformer, which results in very tight regulation of
the output voltage (see the block diagrams). The output
voltages of these models can be adjusted via the R input. The
R input is referenced to the secondary side and allows for
programming of the output voltages in the range of
approximately 80 to 105% of V
resistor or an external voltage source.
The voltage regulation on the double-output models without
option R is achieved with a passive transformer feedback from
the main transformer (see fig. 3). The output voltages can be
adjusted via the Trim input. The Trim input is referenced to the
primary side and allows for programming the output voltage in
the range 100 to 105% of V
within 75 to 105% using an external voltage source. The load
regulation output characteristic allows for paralleling of one or
more double-output models with equal output voltage.
Current limitation is provided by the primary circuit, thus
limiting the total output power of double-output models. The
shut-down input allows remote converter on/off.
Overtemperature protection will disable the converter under
excessive overload conditions with automatic restart.
Fig. 1
Block diagram of single-output models
BCD20008-G Rev AA
Vi–
Vi+
SD
4
2
1
PWM
2 x 2200 pF
®
1500 V
o nom
o nom
via an external resistor or
using either an external
03039
15
13
17
IMX15/IMS15/ IMY15 DC-DC Series Data Sheet
Vo+
Vo–
R
Page 4 of 20
Fig. 2
Block diagram of -0503-models
Fig. 3
Block diagram of double-output models
n.c.
Vi –
Vi+
Trim
SD
Vi –
Vi+
SD
4
1
3
2
4
1
3
2
PWM
PWM
2 x 2200 pF
15 -Watt DC-DC Converters
2 x 2200 pF
www.power-one.com
03089
03090
12
13
15
17
15
11
12
11
13
17
Vo1+
Vo1–
Vo2+
Vo2–
n.c.
Vo1+
Go
Vo2+
Go
R