Datasheet

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date
09/04/2012
page
1 of 5
SERIES: VASD2-DIP │ DESCRIPTION: DC-DC CONVERTER
2 W isolated output
industry standard 14 pin DIP package
dual unregulated outputs
1,000 V isolation
short circuit protection
wide temperature (-40~85°C)
efficiency up to 87%
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•
•
•
•
•
•
•
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FEATURES
input
voltage
MODEL
typ
(Vdc)
range
(Vdc)
(Vdc)
5
4.5~5.5
output
current
output
power
ripple
and noise1
efficiency
min
(mA)
max
(mA)
max
(W)
max
(mVp-p)
typ
(%)
±5
±20
±200
2
150
82
TI
VASD2-S5-D5-DIP
output
voltage
N
RoHS
VASD2-S5-D9-DIP
5
4.5~5.5
±9
±12
±111
2
150
83
VASD2-S5-D12-DIP
5
4.5~5.5
±12
±5
±83
2
150
85
5
4.5~5.5
±15
±7
±67
2
150
85
12
10.8~13.2
±5
±20
±200
2
150
83
N
VASD2-S5-D15-DIP
VASD2-S12-D5-DIP
VASD2-S12-D9-DIP
12
10.8~13.2
±9
±12
±111
2
150
84
VASD2-S12-D12-DIP
12
10.8~13.2
±12
±5
±83
2
150
86
12
10.8~13.2
±15
±7
±67
2
150
86
24
21.6~26.4
±5
±20
±200
2
150
84
VASD2-S24-D9-DIP
VASD2-S24-D12-DIP
VASD2-S24-D15-DIP
24
21.6~26.4
±9
±12
±111
2
150
85
24
21.6~26.4
±12
±5
±83
2
150
87
24
21.6~26.4
±15
±7
±67
2
150
87
1. ripple and noise are measured at 20 MHz BW
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Notes:
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VASD2-S12-D15-DIP
VASD2-S24-D5-DIP
D
PART NUMBER KEY
Base Number
VASD2 - SXX - DXX -DIP
Input Voltage
Output Voltage
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Packaging Style
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CUI Inc │ SERIES: VASD2-DIP │ DESCRIPTION: DC-DC CONVERTER
date 09/04/2012 │ page 2 of 5
INPUT
conditions/description
min
typ
max
units
operating input voltage
5 V model
12 V model
24 V model
4.5
10.8
21.6
5
12
24
5.5
13.2
26.4
Vdc
Vdc
Vdc
5
9
18
21
30
Vdc
Vdc
Vdc
Vdc
Vdc
0.4
A
max
units
surge voltage
3.3V model
5 V model
12 V model
15V model
24 V model
1 second max.
-0.7
-0.7
-0.7
-0.7
-0.7
reverse polarity input current1
input filter
1. If the product reverse did not seek to limit current, may result in injury or permanent damage, testing is not recommended
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Notes:
C filter
ED
parameter
OUTPUT
conditions/description
line regulation
for Vin change of 1%
min
N
parameter
3.3V model
5 V model
12 V model
15V model
24 V model
measured from 10%
load to full load
voltage accuracy
see derating curves
switching frequency
100% load, input voltage range
TI
load regulation
temperature coefficient
N
PROTECTIONS
parameter
conditions/description
short circuit protection
min
typ
12
12.8
8.3
6.8
6.3
1.2
%
20
15
15
15
15
%
%
%
%
%
75
kHz
±0.03
%/°C
typ
max
units
1
s
max
units
parameter
isolation voltage
isolation resistance
conditions/description
min
1,000
Vdc
at 500 Vdc
1,000
MΩ
3,500,000
hours
UL
MTBF
RoHS compliant
typ
for 1 minute at 1 mA max.
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safety approvals
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SAFETY AND COMPLIANCE
yes
ENVIRONMENTAL
parameter
conditions/description
min
operating temperature
storage temperature
non-condensing
temperature rise
at full load
lead temperature
1.5 mm from case for 10 seconds
D
storage humidity
max
units
-40
typ
85
°C
-55
125
°C
95
%
25
°C
300
°C
15
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CUI Inc │ SERIES: VASD2-DIP │ DESCRIPTION: DC-DC CONVERTER
date 09/04/2012 │ page 3 of 5
DERATING CURVES
2. output voltage vs. output current
ED
1. output power vs. ambient temperature
+10%
Output Voltate (%)
Load (%)
100
80
60
40
20
-20
0
20
40
60
85
105 120
-7.5%
N
parameter
conditions/description
dimensions
0.803 x 0.394 x 0.323 (20.40 x 10.00 x 8.20 mm)
case material
plastic (UL94-V0)
100%
min
typ
max
TI
2.8
g
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Side View
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PIN CONNECTIONS
PIN
FUNCTION
1
-Vin
7
NC
8
COM
9
+Vo
11
-Vo
14
+Vin
Bottom View
1
14
11
7
14
9 8
1
cui.com
units
inch
N
MECHANICAL DRAWING
D
50%
Output Current (%)
MECHANICAL
units: mm
tolerance: ±0.25mm
pin section tolerance: ±0.10mm
-2.5%
10%
Ambient Temperature (°C)
weight
+2.5%
Voltage
U
-40
+5%
Nominal
11
9 8
7
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CUI Inc │ SERIES: VASD2-DIP │ DESCRIPTION: DC-DC CONVERTER
date 09/04/2012 │ page 4 of 5
APPLICATION NOTES
5V
4.7 μF
12 V
2.2 μF
24 V
1.0 μF
L
L
+Vin
C
-Vin
DC DC
+Vout
C
L
C
COM
-Vout
Figure 1
Output filtering
An output capacitor is needed to meet output ripple requirements as shown in Table 2. Output capacitance may be increased for additional filtering, but should not exeed 10μF or expanded to an LC network as in Figure 1.
Output Voltage
Table 2
External Input
Capacitance
5V
4.7 μF
9V
2.2 μF
12 V
N
2.
External Input
Capacitance
U
Table 1
Input Voltage
ED
Input filtering
To reduce the reflected ripple current and minimize EMI, especially when the converter input is more than 2” away from the DC
source, it is recommended to connect a low ESR electrolytic capacitor between Vin and Gnd. The values suggested are as shown in
Table 1. If additional filtering is required, the capacitance may be increased, or expanded to an LC network as shown in Figure 1.
+Vin
+Vout
REG
REG
DC
DC DC
DC
COM
-Vin
TI
1.
-Vout
REG
REG
+Vin
1.0 μF
DC
DC DC
DC
-Vin
+Vout
COM
REG
REG
-Vout
Figure 2
Minimum loading
The converter needs a minimum of 10% loading to maintain output regulation. Operation under no-load conditions will not cause immediate damages but may reduce reliability, and cause performance not to meet specifications.
4.
Regulation
With a semi-regulated design, the converter’s output voltage varies with load current and will change proportionally to the input voltage. If regulated output is needed, an external regulator can be used as shown in Figure 2.
5.
Protection
The converter has minimal protection against input over-voltage or output over-load, and may be permanently damaged if exposed to
these conditions. An input clamping device can be used for input voltage limiting. An input fuse or an output fuse can also be used to
protect against over-loading.
6.
Dual outputs used as a single output
The +Vout and -Vout can be used to obtain a single output that is the sum of the two outputs. In this case, the COM pin shouldn’t be
used.
7.
External Regulator
An external 3-terminal regulator can be connected to the output of the converter to achieve full regulation. Make sure the converter’s
output voltage provides sufficient head room for the regulator. An additional benefit is that the built-in protection features in the regulator, such as OCP, OTP, etc, will protect the converter also. In a complimentory supply, a negative output regulator must be used to
achieve the negative regulated output.
D
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O
N
3.
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CUI Inc │ SERIES: VASD2-DIP │ DESCRIPTION: DC-DC CONVERTER
date 09/04/2012 │ page 5 of 5
REVISION HISTORY
description
date
12/11/2007
1.0
initial release
1.01
new template applied
1.02
new template applied, V-Infinity branding removed
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rev.
09/04/2009
09/04/2012
D
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TI
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The revision history provided is for informational purposes only and is believed to be accurate.
Headquarters
20050 SW 112th Ave.
Tualatin, OR 97062
800.275.4899
Fax 503.612.2383
cui.com
[email protected]
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
affect its safety or effectiveness.
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