Datasheet

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date
11/01/2012
page
1 of 5
SERIES: VWRBT2 │ DESCRIPTION: DC-DC CONVERTER
2 W isolated output
wide input (2:1)
industry standard 16 pin SMT package style
single regulated outputs
1,500 V isolation
short circuit protection
wide temperature (-40~85°C)
efficiency up to 80%
U
•
•
•
•
•
•
•
•
ED
FEATURES
input
voltage
MODEL
output
voltage
N
RoHS
output
current
range
(Vdc)
(Vdc)
VWRBT2-D12-S3.3-SMT
12
9~18
3.3
VWRBT2-D12-S5-SMT
12
9~18
5
40
VWRBT2-D12-S9-SMT
12
9~18
9
22
ripple
and noise1
efficiency
min
(mA)
max
(mA)
max
(W)
typ
(mVp-p)
typ
(%)
50
500
2
35
70
400
2
35
74
222
2
35
76
TI
typ
(Vdc)
output
power
VWRBT2-D12-S12-SMT
12
9~18
12
16
167
2
35
78
VWRBT2-D12-S15-SMT
12
9~18
15
13
133
2
35
79
18~36
3.3
24
24
N
VWRBT2-D24-S3.3-SMT
VWRBT2-D24-S5-SMT
18~36
5
50
500
2
35
72
40
400
2
35
76
24
18~36
9
22
222
2
35
78
24
18~36
12
16
167
2
35
80
VWRBT2-D24-S15-SMT
24
18~36
15
13
133
2
35
80
Notes:
O
VWRBT2-D24-S9-SMT
VWRBT2-D24-S12-SMT
1. ripple and noise are measured at 20 MHz BW
D
IS
C
PART NUMBER KEY
VWRBT2 - DXX - SXX -SMT - X
Output Voltage
Base Number
Input Voltage
Package Options
"blank" = standard
TR = Tape & Reel
Packaging Style
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CUI Inc │ SERIES: VWRBT2 │ DESCRIPTION: DC-DC CONVERTER
date 11/01/2012 │ page 2 of 5
INPUT
conditions/description
operating input voltage
12 V input
24 V input
min
typ
max
units
9
18
12
24
18
36
Vdc
Vdc
OUTPUT
parameter
conditions/description
line regulation
measured from low line to high line
min
load regulation
measured from 10% to 100% full load
voltage accuracy
positive
negative
refer to recommended circuit
switching frequency
100% load, nominal input voltage
continuous, automatic recovery
SAFETY AND COMPLIANCE
N
conditions/description
short circuit protection
min
TI
parameter
conditions/description
isolation voltage
tested for 1 minute, at 1 mA max.
1,500
insulation resistance
at 500 Vdc
1,000
isolation capacitance
input to output
RoHS compliant
yes
parameter
operating temperature
storage temperature
units
%
±0.5
±1
%
±1
±3
±3
±5
%
%
35
150
mVp-p
at full load
%/°C
typ
max
units
typ
max
units
Vdc
MΩ
85
lead temperature
for 10 seconds
pF
1,000,000
min
hours
typ
max
units
-40
85
°C
-55
125
°C
95
15
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%
°C
300
D
temperature rise
kHz
±0.03
non-condensing
IS
C
storage humidity
conditions/description
O
ENVIRONMENTAL
min
N
parameter
MTBF
max
±0.5
300
temperature coefficient
PROTECTIONS
typ
±0.2
U
ripple & noise
ED
parameter
°C
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CUI Inc │ SERIES: VWRBT2 │ DESCRIPTION: DC-DC CONVERTER
date 11/01/2012 │ page 3 of 5
ED
DERATING CURVES
100
60
40
20
0
20
40
60 71
85
MECHANICAL
100
parameter
conditions/description
dimensions
0.939 x 0.713 x 0.315 (23.86 x 18.10 x 8.10 mm)
case material
UL94-V0 epoxy resin
MECHANICAL DRAWING
N
8 .00[0 .31 5]
(Side View)
1.02[0.040]
typ
max
5.2
g
10 9
16
0.50[0.020]
1
7
8
15.24[0.600]
2.54[0.100]
16
( Top View)
1
7
8
13.7 0[0 .539 ]
2.54[0.100]
10 9
1 8.10 [0.7 13]
IS
C
23.86[0.939]
3.04[0.120]
1.00[0.039]
PIN CONNECTIONS
18.10[0.713]
5e
0.25[0.010]
1.40±0.20
[0.055±0.008]
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units
inch
1 7.22 [0.6 78]
O
7 .50 [0.29 5]
units: mm [inches]
tolerance: ±0.25 [±0.010]
pin section tolerance: ±0.10 mm [±0.004]
D
min
TI
weight
120
N
Ambient Temperature (°C)
2.5 4[0 .100 ]
-20
U
-40
2.1 0[0. 083 ]
Load (%)
80
PIN
FUNCTION
1
GND
7
NC
8
NC
9
+Vo
10
0V
16
+Vin
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CUI Inc │ SERIES: VWRBT2 │ DESCRIPTION: DC-DC CONVERTER
date 11/01/2012 │ page 4 of 5
APPLICATION NOTES
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.
Recommended Circuit
All VWRBT2 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).
+Vin
Figure 1
+Vo
DC
DC
U
Cin
ED
1.
-Vin
-Vo
N
However, the capacitance of the output filter 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 filter capacitor sees
(Table 1).
General:
12 V
24, 48 V
Cout
10 μF / 100 mA
Table 1
Vout
(Vdc)
Cout
(μF)
3.3
2,200
5
1,000
9
680
12
470
15
330
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.
IS
C
O
Input Current(A)
General: Ip ≤1.4*Iin-max
N
3.
100 μF
10 ~ 47 μF
TI
Cin
No parallel connection or plug and play
5.
Solderability
reflow soldering, 240°C max.
Inp ut Voltage
Ra nge
Input Voltage (V)
D
4.
Ip
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CUI Inc │ SERIES: VWRBT2 │ DESCRIPTION: DC-DC CONVERTER
date 11/01/2012 │ page 5 of 5
REVISION HISTORY
description
date
05/12/2008
1.0
initial release
1.01
updated to new template
1.02
updated application notes
1.03
V-Infinity branding removed
1.04
added TR package option
ED
rev.
05/09/2012
06/19/2012
09/10/2012
11/01/2012
D
IS
C
O
N
TI
N
U
The revision history provided is for informational purposes only and is believed to be accurate.
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Fax 503.612.2383
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