When open or high impedance,the converter work well; When this pin is ‘high’; the converter shutdown; It should be note that the
input current (Ic) should between 5-10mA, exceeding the maximum 20mA will cause permanence damage to the converter. The value
of R Can be derived as follows :
R=
2.
V
C
-V
D
-1.0
I
C
Recommended Circuit
If you want to further decrease the input/output ripple, an “LC”
fi
ltering network may be connected to the input and output ends of
the DC/DC converter, see (Figure 1).
Figure 1
Li n 2
Cin
G ND
1
Vi n
However, the capacitance of the output
fi
lter capacitor must be proper. If the capacitance is too big, a startup problem might arise.
For every channel of output, provided the safe and reliable operation is ensured, the greatest capacitance of its
fi
lter capacitor sees
(Table 1).
Cin
Lin
Cout
Lout
Cs
5, 12 V
24, 48 V
--
--
--
--
100
μF
10 ~ 22
μF
Vin
(Vdc)
3.3
5
9
Cout
(μF)
N
TI
4.7 ~ 120
μH
100
μF
(typ)
2.2 ~ 10
μH
10 ~ 22
μF
Current
While using unstable power source, please ensure the output voltage and ripple voltage do not excced indexes of the converter. The
preceding power source must be able to provide for converter sufficient starting current Ipy.
Input Current(A)
3.
General: Ip
≤1.4*Iin-max
O
Ip
IS
C
4.
Input Voltage (V)
No parallel connection or plug and play
D
cui.com
N
U
6
+V o
8
Cs
Co ut
7
0V
Vc
D1 Ic R
3
Table 1
12
15
24
Input
Inp ut Voltage
Ra nge
ED
2,200
1,000
820
680
560
470
For more information, please visit the
product page.
CUI Inc
│
SERIES:
VWRBS2
│
DESCRIPTION:
DC-DC CONVERTER
date
09/10/2012
│
page
5 of 5
REVISION HISTORY
rev.
1.0
1.01
description
initial release
V-Infinity branding removed
date
The revision history provided is for informational purposes only and is believed to be accurate.
D
IS
C
O
Headquarters
20050 SW 112th Ave.
Tualatin, OR 97062
800.275.4899
Fax 503.612.2383
cui.com
techsupport@cui.com
CUI offers a two (2) year limited warranty. Complete warranty information is listed on our website.
CUI reserves the right to make changes to the product at any time without notice. Information provided by CUI is believed to be accurate and reliable. However, no responsibility is
assumed by CUI for its use, nor for any infringements of patents or other rights of third parties which may result from its use.
CUI products are not authorized or warranted for use as critical components in equipment that requires an extremely high level of reliability. A critical
component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to
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