48ims7-24-24-9 Power-One, 48ims7-24-24-9 Datasheet - Page 9

• Manufacturer Part Number: 48ims7-24-24-9
• Description: Imx7/ Ims7 Dc-dc Series Data Sheet 7-watt Dc-dc Converters
• Manufacturer: Power-One

BCD20007 Rev AB
Fig. 10
Flexible load distribution on double-outputs models (2 12 V)
with load variation from 0 to 150% of P
Output 2 loaded with 25% of P
Auxiliary Functions
Inhibit Function
The output(s) of the converter may be enabled or disabled by
means of a logic signal (TTL, CMOS, etc.) applied to the inhibit
pin. No output voltage overshoot will occur, when the converter
is turned on. If the inhibit function is not required, the inhibit pin
should be connected to Vi– to enable the output (active low
logic, fail safe).
Fig. 12
If the inhibit is not used, the inhibit pin should be connected
to Vi–
11.6
11.2
12.8
12.4
V
12
Converter operating:
Converter inhibited
or inhibit pin i left open:
o1
0
, V
o2
[V]
30
60
®
i
Vi+
Vi –
90
–10 V to 0.8 V
2.4 V to V
2.4 V to 75 V
o2 nom
.
120
o1 nom
i max
06070
150
on output 1.
05059a
(20/40IMX7,
24/48IMS7)
(70/110IMX7)
I
o1 nom
V
V
I
o2
o1
o1
[%]
Page 9 of 15
Adjustable Output Voltage
As a standard feature, all IMX7 and IMS7 converters offer
adjustable output voltage(s) by using a control pin. If this pin is
left open-circuit, the output voltage is set to V
voltage is adjustable in the range of 75 to 105% of V
circuit works for single- and double-output models in a different
way. For output voltages V
V
V
Single-output models with R-input:
The R input (pin 13) is referenced to the secondary side of the
converter. Adjustment of the output voltage is possible by
means of either an external resistor or a voltage source.
Fig. 11
Efficiency versus input voltage and load.
Typical values (40IMX7-12-12-8).
Fig. 13
Output voltage control with external resistor
o
a) Adjustment by means of an external resistor:
i min
/V
90
70
40
80
60
50
o nom
[%]
IMX7/IMS7 DC-DC Series Data Sheet
Depending upon the value of the required output voltage,
a resistor R
figure below:
25
(see Electrical Input Data) increases proportionally to
.
Vi+
Vi–
ext1
50
or R
7-Watt DC-DC Converters
ext2
o
shall be connected as shown in the
> V
o nom
06131
75
, the minimum input voltage
Vo+
Vo–
R
05052a
www.power-one.com
100 %
R
R
o nom
ext1
ext2
V
V
V
i nom
i max
i min
. The output
P
P
o nom
o
o nom
.The