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product page.
date
page
09/05/2012
1 of 6
SERIES:
VWRBS1
│
DESCRIPTION:
DC-DC CONVERTER
FEATURES
• 1 W isolated output
• wide input (2:1)
• industry standard 8 pin SIP package style
•
•
•
•
•
single unregulated outputs
1,500 V isolation
short circuit protection
wide temperature (-40~85°C)
efficiency up to 80%
RoHS
MODEL
VWRBS1-D5-S5-SIP
VWRBS1-D5-S9-SIP
VWRBS1-D5-S12-SIP
VWRBS1-D5-S15-SIP
VWRBS1-D12-S5-SIP
VWRBS1-D12-S9-SIP
VWRBS1-D12-S12-SIP
VWRBS1-D12-S15-SIP
VWRBS1-D15-S5-SIP
VWRBS1-D15-S9-SIP
VWRBS1-D15-S12-SIP
VWRBS1-D15-S15-SIP
VWRBS1-D24-S5-SIP
VWRBS1-D24-S9-SIP
VWRBS1-D24-S12-SIP
5
5
5
5
input
voltage
typ
(Vdc)
range
(Vdc)
output
voltage
(Vdc)
N
U
output
current
output
power
max
(W)
min
(mA)
max
(mA)
4.5~9
4.5~9
4.5~9
9~18
5
9
12
5
20
8
200
83
N
TI
11
7
111
67
4.5~9
9~18
15
9
20
8
200
83
11
7
111
67
9~18
12
5
9~18
15
9
9~18
20
8
7
20
11
8
7
20
11
8
7
200
83
67
200
111
83
67
200
111
83
67
9~18
11
111
9~18
12
15
5
9
12
15
5
9
12
15
9~18
18~36
18~36
18~36
18~36
36~72
36~72
36~72
36~72
12
12
12
12
15
15
15
O
15
24
IS
C
24
24
VWRBS1-D24-S15-SIP
24
VWRBS1-D48-S5-SIP
48
VWRBS1-D48-S9-SIP
48
VWRBS1-D48-S12-SIP
Notes:
48
VWRBS1-D48-S15-SIP
48
1. ripple and noise are measured at 20 MHz BW
PART NUMBER KEY
D
VWRBS1 - DXX - SXX -SIP
Base Number
Input Voltage
Output Voltage
cui.com
ED
ripple
and noise
1
typ
(mVp-p)
efficiency
typ
(%)
1
35
70
71
76
75
76
78
79
80
75
79
80
81
76
78
80
80
76
78
80
80
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
35
35
35
30
30
30
30
80
80
80
80
55
55
55
55
382
382
382
382
Packaging Style
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CUI Inc
│
SERIES:
VWRBS1
│
DESCRIPTION:
DC-DC CONVERTER
date
09/05/2012
│
page
2 of 6
INPUT
parameter
input surge voltage
internal power dissipation
short circuit input power
input
fi
lter
C
fi
lter
conditions/description
for 1,000 ms
5 Vdc model
12 Vdc model
24 Vdc model
48 Vdc model
min
-0.7
-0.7
-0.7
-0.7
typ
max
12
25
50
100
1.6
units
Vdc
Vdc
Vdc
Vdc
W
W
OUTPUT
parameter
voltage accuracy
line regulation
load regulation
transient recovery time
transient response deviation
ripple & noise
switching frequency
temperature coefficient
conditions/description
positive
negative
refer to recommended circuit
min
N
U
±1
±2
±0.2
8
±0.5
±3
25
80
300
min
typ
min
typ
1,500
1,000
35
1,000,000
min
-40
-50
typ
15
80
measured from low line to high line
25% load step change
25% load step change
all other models
15 V model
100% load, nominal input voltage
measured from 10% to 100% full load
N
TI
cui.com
PROTECTIONS
parameter
short circuit protection
conditions/description
continuous, automatic recovery
SAFETY AND COMPLIANCE
parameter
isolation voltage
insulation resistance
isolation capacitance
RoHS compliant
MTBF
conditions/description
O
tested for 1 minute at 1 mA max.
at 500 Vdc
input to output
yes
IS
C
MIL-HDBK-217F, 25°C
ENVIRONMENTAL
parameter
operating temperature
storage temperature
storage humidity
temperature rise
conditions/description
non-condensing
D
at full load, 25°C
all other models
15 V model
1.5 mm from case for 10 seconds
lead temperature
ED
1
typ
max
±3
±5
±0.5
±0.75
10
±5
75
150
±0.03
units
%
%
%
%
ms
%
mVp-p
mVp-p
kHz
%/°C
max
units
max
units
Vdc
MΩ
pF
hours
max
85
125
95
35
150
300
units
°C
°C
%
°C
°C
°C
For more information, please visit the
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CUI Inc
│
SERIES:
VWRBS1
│
DESCRIPTION:
DC-DC CONVERTER
date
09/05/2012
│
page
4 of 6
DERATING CURVES
1. output power vs. ambient temperature
2. efficiency vs. output power
3. efficiency vs. output current
85
83
81
79
100
Load (%)
80
60
40
20
77
75
73
71
69
-40
-20
0
20
40
60 71
85
100
120
9
10
11
12
13
N
U
14
15
16
17
18
20
30
40
Ambient Temperature (°C)
Input Voltage (Vac)
MECHANICAL
parameter
dimensions
case material
weight
conditions/description
UL94-V0 epoxy resin
min
0.866 x 0.472 x 0.374 (22.00 x 12.00 x 9.50 mm)
MECHANICAL DRAWING
units: mm [inches]
tolerance: ±0.25 [±0.010]
pin section tolerance: ±0.10 mm [±0.004]
N
TI
0 .30[0. 012 ]
1
2
3
5
6
5
6
7 8
2.54[0.100]
17.78[0.700]
PIN
1
2
22.00 [0.866]
O
9.50
[0.374]
1
2
3
IS
C
2.5 0
[0 .0 98]
0.50[0.020]
17.78[0.700]
PIN CONNECTIONS
FUNCTION
GND
Vin
CTRL
NC
+Vo
0V
CS
0.50[0.02 0]
3
5
6
7
8
D
1 2. 00
[0 .4 72]
(Side View)
4.10 [0.161]
2.54[0.100]
cui.com
2. 54 [0.1 00]
2 .50[0. 098]
(Bottom View)
ED
Vin=Vin-min
Vin=Vin-nom
90
80
70
60
50
40
30
Efficiency (%)
Efficiency (%)
20
10
50
60
70
80
90
100
Output Current (%)
typ
max
units
inch
g
5
∅0
.70 [0.028]
7 8
For more information, please visit the
product page.
CUI Inc
│
SERIES:
VWRBS1
│
DESCRIPTION:
DC-DC CONVERTER
date
09/05/2012
│
page
5 of 6
APPLICATION NOTES
1.
Requirement on Output Load
In order to ensure the product operates efficiently and reliably, make sure the specified range of input voltage is not exceeded and
the minimum output load is not less than 10% load. If the actual load is less than the specifi ed minimum load, the output ripple may
increase sharply while its effi ciency and reliability will reduce greatly. If the actual output power is very small, please add an
appropriate resistor as extra loading.
2.
Overload Protection
Under normal operating conditions, the output circuit of these products has no protection against overload. The simplest method is to
connect a self-recovery fuse in series at the end or add a circuit breaker to the circuit.
5 Vdc models
1,000 mA slow-blow type
12 Vdc models
500 mA slow-blow type
24 Vdc models
250 mA slow-blow type
48 Vdc models
3.
Recommended Circuit
All VWRBS1 converters have been tested according to the following recommended testing circuit before leaving the factory. This
series should be tested under load, never under no load (Figure 1).
Figure 1
Vc
Vi n
Cin
G ND
1
D1 Ic R
Li n 2
3
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).
General:
Cin
Cout
Lin
Lout
Cs
5, 12 V
N
TI
7
0V
100
μF
10
μF
24, 48 V
47
μF
typ.
4.7~120
μH
2.2~10
μH
10~22
μF
O
Input Current(A)
4.
IS
C
5.
General: Ip
≤1.4*Iin-max
6.
CTRL Terminal
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 should between 5~10 mA, exceeding the maximum 20 mA will cause permanence damage to the converter.
The value of R can be derived as follows:
R=
Input 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 Ip.
D
Ip
Input Voltage (V)
No parallel connection or plug and play
cui.com
N
U
6
+Vo
8
Cs
Co ut
Table 1
V
C
-V
D
-1.0
I
C
Inp ut Voltage
Ra nge
ED
120 mA slow-blow type
Vout
(Vdc)
3.3
5
9
12
15
Cout
(μF)
2,200
1,000
680
470
330
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