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SMS SERIES - 12 WATT
DESCRIPTION
SMS surface-mountable DC/DC converters feature up to
12 Watts of output power. The SMS is a fully isolated
converter with 1500 VDC isolation, short circuit, and
undervoltage lockout protection. The SMS is available
with remote shutdown, as well as an optional active
current share, to allow for high power distributed
operation. Available in 24 or 48 VDC input versions,
the SMS is well suited to telecom and networking
applications.
FEATURES
•
•
•
•
•
Industry Standard Package
Industry Standard Pinout
85°C Case Operation
Short Circuit Protection
6-Sided Shielding
• 24V and 48V Input
Versions
• Input Pi Filter
• Regulated Outputs
• 1500V Isolation
Efficiency vs. Load (24V Input)
90
85
EFFICIENCY %
80
75
SMS012YE
SMS012YG
TECHNICAL SPECIFICATIONS
Input
Voltage Range
24 VDC Nominal
48 VDC Nominal
Reflected Ripple
Input Reverse Voltage Protection
Output
Setpoint Accuracy
Line Regulation V
in
Min. - V
in
Max., I
out
Rated
Load Regulation I
out
Min. - I
out
Max., V
in
Nom
±1%
±0.1% V
out
±0.2% V
out
18 - 36 VDC
36 - 72 VDC
25 mA
Shunt Diode
70
65
10
20
30
40
50
60
70
80
90
100
LOAD %
Efficiency vs. Load (48V Input)
90
85
80
75
EFFICIENCY %
Minimum Output Current
Dynamic Regulation, Loadstep
Pk Deviation
Settling Time
Short Circuit / Overcurrent Protection
Current Limit Threshold Range, % of I
out
Rated
General
Turn-On Time
Remote Shutdown
Switching Frequency
Isolation
Input - Output
Temperature Coefficient
Operating Temperature
Ambient Operating Range 100 LFM
Ambient Operating Range Convection
Storage Range
Humidity Max., Non-Condensing
Vibration, 3 Axes, 5 Min Each
MTBF
†
(Bellcore TR-NWT-000332)
Safety
Weight (approx.)
10 % I
out
Rated
25% I
out
4% V
out
500
µs
Shutdown / Hiccup
110 - 130%
70
65
60
55
50
45
SMS012ZE
SMS012ZG
10 ms
Positive Logic
400 kHz
1500 VDC
±0.03%/°C
-40 To +85°C
-40 To +70°C
-40 To +100°C
95%
5 g, 10 - 55 Hz
Consult Factory
Consult Factory
0.4 oz
†
10
20
30
40
50
60
70
80
90
100
LOAD %
Notes
MTBF predictions may vary slightly from model to model.
Specifications typically at 25°C, normal line, and full load, unless otherwise stated.
Soldering Conditions: I/O pins, 260
°
C, ten seconds; fully compatible with
commercial wave-soldering equipment.
Safety: Agency approvals may vary from model to model. Please consult factory
for specific model information.
Units are water-washable and fully compatible with commercial spray or immersion
post wave-solder washing equipment.
C-12
SMS SERIES - 12 WATT
MODELS - (See the last page of this file for options.)
Vin
(Volts)
24
24
24
24
48
48
48
48
Vin Range
(Volts)
18 - 36
18 - 36
18 - 36
18 - 36
36 - 72
36 - 72
36 - 72
36 - 72
Iin Max.*
(Amps)
0.52
0.64
0.82
0.82
0.26
0.32
0.41
0.41
Vout
(Volts)
2.1
2.5
3.3
5.0
2.1
2.5
3.3
5.0
Iout Rated
(Amps)
3.3
3.6
3.6
2.4
3.3
3.6
3.6
2.4
Ripple & Noise
Pk-Pk (mV)
50
50
50
50
50
50
50
50
Efficiency
Typ. **
84%
86%
86%
88%
82%
85%
87%
88%
Model
SMS007YC
SMS009YD
SMS012YE
SMS012YG
SMS007ZC
SMS009ZD
SMS012ZE
SMS012ZG
* Maximum input current at minimum input voltage, maximum rated output power.
** At nominal Vin, rated output.
MECHANICAL DRAWING
2.00"
(50.8mm)
0.875"(22.2mm)
8
7
6
5
1.00"
0.85"
0.98"
TOP VIEW
1
2
3
4
(25.4mm)
(21.6mm) (24.9mm)
LAND PATTERN
0
-0.06"(-1.5mm)
-0.40"
(-10.2mm)
0
0.400"
(10.2mm)
0.800"
1.200"
(30.5mm)
0.375"
(9.5mm)
0.025" TYP.
(0.6mm)
(20.3mm)
Thermal Impedance
Natural Convection
100 LFM
200 LFM
300 LFM
400 LFM
21.1
10.4
6.8
5.6
4.3
°C/W
°C/W
°C/W
°C/W
°C/W
Pin
1
2
3
4
5
6
7
Function
- V
in
S/D
+ V
out
- V
out
- V
out
+ V
out
OPTION
+V
in
Tolerances
Inches:
.XX ± 0.020
.XXX ± 0.010
Pin:
± 0.002
(Millimeters)
.X ± 0.5
.XX ± 0.25
± 0.05
Note:
Thermal impedance data is dependent on
many environmental factors. The exact
thermal performance should be validated for
specific application.
( Dimensions as listed unless otherwise specified.)
8
C-13
OPTIONS
When ordering equipment options, use the following suffix information. Select the option(s) that
you prefer and add them to the model number. Example ordering options are located below the
options table.
OPTION
Negative Logic
Lucent Compatible Trim
Terminal Strip
Trim
Enable
Trim and Enable
Current Share
Headerless
SUFFIX
N
T
TS
1
2
3
4
Y
APPLICABLE SERIES
HAS, HBD, HBS, HES, LES, QBS,
QES, TES, TQD
HAS, HBD, HBS, HES, QBS, QES
XWS
IAS, LES
IAD, IAS, LES, SMS
IAS, LES
SMS
Encapsulated EWS, IWS, OWS
REMARKS
TTL “Low” Turns Module ON
TTL “High” Turns Module OFF
PIN LENGTH AND HEATSINK
OPTIONS
0.110” (2.8mm) Pin Length
0.150” (3.8mm) Pin Length
0.24” (6.1mm) Horizontal Heatsink
0.24” (6.1mm) Vertical Heatsink
0.45” (11.4mm) Horizontal
Heatsink
0.45” (11.4mm) Vertical Heatsink
0.95” (24.1mm) Horizontal
Heatsink
0.95” (24.1mm) Vertical Heatsink
8
9
1H
1V
2H
2V
3H
3V
All Units (Except SMS)
All Units (Except SMS)
All Units (Except DIP, SIP, and SM
Packages)
All Units (Except DIP, SIP, and SM
Packages)
All Units (Except DIP, SIP, and SM
Packages)
All Units (Except DIP, SIP, and SM
Packages)
All Units (Except DIP, SIP, and SM
Packages)
All Units (Except DIP, SIP, and SM
Packages)
Standard Pin Length is 0.180”
(4.6mm)
Includes Thermal Pad
Includes Thermal Pad
Includes Thermal Pad
Includes Thermal Pad
Includes Thermal Pad
Includes Thermal Pad
Example Options:HBS050ZG-ANT3V = HBS050ZG-A with negative logic, Lucent compatible trim, and
0.95” vertical heatsink.
LES015YJ-3N = LES015YJ with optional trim and enable, negative logic.
QBS066ZG-AT8 = QBS066ZG-A with Lucent compatible trim and 0.110” pin length.
NUCLEAR AND MEDICAL APPLICATIONS
Power-One products are not authorized for use as critical components in life support systems,
equipment used in hazardous environments, or nuclear control systems without the express written consent of the President of Power-One, Inc.
TECHNICAL REVISIONS
The appearance of products, including safety agency certifications pictured on labels, may change depending on the
date manufactured. Specifications are subject to change without notice.
C105
Electronics Design Contest
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