Datasheet

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date
03/30/2015
page
1 of 5
SERIES: VAT2-SMT │ DESCRIPTION: DC-DC CONVERTER
FEATURES
•
•
•
•
•
•
•
2 W isolated output
industry standard 14 pin SMT package
dual unregulated outputs
1,000 Vdc isolation
short circuit protection
wide temperature (-40~105°C)
efficiency up to 85%
RoHS
MODEL
input
voltage
output
voltage
output
current
output
power
ripple
and noise1
efficiency
typ
(Vdc)
range
(Vdc)
(Vdc)
min
(mA)
max
(mA)
max
(W)
max
(mVp-p)
typ
(%)
VAT2-S5-D5-SMT
5
4.5~5.5
±5
±20
±200
2
150
82
VAT2-S5-D9-SMT
5
4.5~5.5
±9
±12
±111
2
150
83
VAT2-S5-D12-SMT
5
4.5~5.5
±12
±9
±83
2
150
84
VAT2-S5-D15-SMT
5
4.5~5.5
±15
±7
±67
2
150
82
VAT2-S12-D5-SMT
12
10.8~13.2
±5
±20
±200
2
150
83
VAT2-S12-D9-SMT
12
10.8~13.2
±9
±12
±111
2
150
84
VAT2-S12-D12-SMT
12
10.8~13.2
±12
±9
±83
2
150
84
VAT2-S12-D15-SMT
12
10.8~13.2
±15
±7
±67
2
150
85
Notes:
1. Ripple and noise are measured at 20 MHz BW by “parallel cable” method with 1 μF ceramic and 10 μF electrolytic capacitors on the output.
PART NUMBER KEY
VAT2 - SXX - DXX -SMT - X
Output Voltage
Base Number
Input Voltage
Package Options
"blank" = standard
TR = Tape & Reel
Packaging Style
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CUI Inc │ SERIES: VAT2-SMT │ DESCRIPTION: DC-DC CONVERTER
date 03/30/2015 │ page 2 of 5
INPUT
parameter
conditions/description
min
typ
max
units
operating input voltage
5 Vdc model
12 Vdc model
4.5
10.8
5
12
5.5
13.2
Vdc
Vdc
parameter
conditions/description
min
typ
line regulation
for Vin change of 1%
load regulation
measured from 10%
load to full load
voltage accuracy
see derating curves
switching frequency
100% load
temperature coefficient
100% load
OUTPUT
5 Vdc models
9 Vdc models
12 Vdc models
15 Vdc models
12.8
8.3
6.8
6.3
max
units
±1.2
%
15
10
10
10
%
%
%
%
70
kHz
±0.03
%/°C
max
units
1
s
max
units
PROTECTIONS
parameter
conditions/description
min
typ
short circuit protection
SAFETY AND COMPLIANCE
parameter
conditions/description
min
typ
isolation voltage
input to output for 1 minute at 1 mA max.
1,000
Vdc
isolation resistance
input to output at 500 Vdc
1,000
MΩ
conducted emissions
CISPR22/EN55022, class A (external circuit required, see Figure 1)
ESD
IEC/EN 61000-4-2, class B, contact ±6kV
MTBF
as per MIL-HDFK-217 at 25 °C
RoHS
2011/65/EU
3,500,000
hours
ENVIRONMENTAL
parameter
conditions/description
min
max
units
operating temperature
see derating curve
-40
105
°C
-55
125
°C
95
%
25
°C
245
°C
storage temperature
storage humidity
non-condensing
temperature rise
at full load
reflow soldering
see reflow soldering profile
25 0
24 5
Peak .Temp 245˚C( Max.)
21 7
Tem peratur e (˚C )
20 0
60 Sec Max
( >217˚
C)
15 0
10 0
50
0
typ
Tim e (se c.)
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CUI Inc │ SERIES: VAT2-SMT │ DESCRIPTION: DC-DC CONVERTER
date 03/30/2015 │ page 3 of 5
MECHANICAL
parameter
conditions/description
dimensions
17.78 x 12.70 x 6.00 (0.700 x 0.500 x 0.236 inch)
min
case material
plastic (UL94-V0)
typ
max
units
mm
weight
2.1
g
MECHANICAL DRAWING
units: mm [inches]
tolerance: ±0.25 [±0.010]
pin section tolerance: ±0.10 [±0.004]
PIN CONNECTIONS
PIN
FUNCTION
1
GND
2
+Vin
5
-Vo
6
0V
7
+Vo
10
-Vo
others
NC
DERATING CURVES
1. output power vs. ambient temperature
2. output voltage vs. output current
+10%
Output Voltate (%)
Load (%)
100
80
60
40
20
-40
-20
0
20
40
60
85
105 120
+5%
+2.5%
Nominal
Voltage
-2.5%
-7.5%
50%
10%
Ambient Temperature (°C)
100%
Output Current (%)
EMC RECOMMENDED CIRCUIT
Figure 1
Vin
V in
C1
GND
Table 1
+Vo
DC/DC
GND
Recommended external circuit
components
C2
LOAD
-Vo
(0V)
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Vout
(Vdc)
C1
C2
5
2.2μF/50V
4.7μF
9
2.2μF/50V
2.2μF
12
2.2μF/50V
1μF
15
2.2μF/50V
0.47μF
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CUI Inc │ SERIES: VAT2-SMT │ DESCRIPTION: DC-DC CONVERTER
date 03/30/2015 │ page 4 of 5
APPLICATION NOTES
1. Output load requirement
To ensure this module can operate efficiently and reliably, the minimum output load may not be less than 10% of the full load during
operation. If the actual output power is low, connect a resistor at the output end in parallel to increase the load.
2. Overload Protection
Under normal operating conditions, the output circuit of this product has no protection against overload. The simplest method to add
this is to add a circuit breaker to the circuit.
3. Recommended circuit
If you want to further decrease the input/output ripple, you can increase the capacitance accordingly or choose capacitors with low
ESR (see Figure 2 & Table 2). However, the capacitance of the output filter capacitor must be appropriate. If the capacitance is too
high, a startup problem might arise. For every channel of the output, to ensure safe and reliable operation, the maximum capacitance
must be less than the maximum capacitive load (see Table 3).
Figure 2
Vin
DC
Cin
GND
Cout
DC
0V
Cout
Table 2
Note:
+Vo
-Vo
Table 3
Max. Capacitive Load1
(μF)
Vin
(Vdc)
Cin
(µF)
Dual Vo
(Vdc)
Cout
(µF)
Dual Vout
(Vdc)
±5
4.7
5
100
2.2
9
100
12
100
15
100
5
4.7
12
2.2
-
-
±12
1
-
-
±15
0.47
Vin ±9
GND
REG
REG
DC
DC
Note:
It’s not recommended to connect any external capacitors in
applications with less than 0.5 watt output.
Vin
1. For each output.
REG
Cout
+Vo
0V
-Vo
+Vo
4. Output Voltage Regulation and Over-voltage Protection Circuit
The device for output voltage regulation, over-voltage and over-current protection is a linear regulator and a capacitor filtering network with overheat protection which can be connected to the input or output end in series (see Figure 3). The recommended capacitance of its filter capacitor (see Table 3), and the linear regulator is based on the actual voltage and current required.
DC
Cin
GND
DC
Cout
Figure 3
Vin
GND
Note: 1.
2.
3.
4.
REG
REG
DC
DC
0V
-Vo
+Vo
0V
REG
-Vo
Operation under minimum load will not damage the converter; however, they may not meet all specifications listed.
Max. capacitive load tested at input voltage range and full load.
It is recommended to use either ceramic capacitors or electrolytic capacitors on the input and the output. Using tantalum capacitors may increase the risk of failure.
All specifications measured at: Ta=25°C, humidity<75%, nominal input voltage and rated output load, unless otherwise specified.
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CUI Inc │ SERIES: VAT2-SMT │ DESCRIPTION: DC-DC CONVERTER
date 03/30/2015 │ page 5 of 5
REVISION HISTORY
rev.
description
date
1.0
initial release
02/11/2008
1.01
new template applied
04/20/2012
1.02
V-Infinity branding removed
09/04/2012
1.03
added TR package option
11/01/2012
1.04
reflow solder profile changed
05/25/2014
1.05
updated datasheet
03/30/2015
The revision history provided is for informational purposes only and is believed to be accurate.
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20050 SW 112th Ave.
Tualatin, OR 97062
800.275.4899
Fax 503.612.2383
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[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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