SMS SERIES
12 WATT
Powering Communications and Technology
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.
Efficiency vs. Load (24V Input)
90
FEATURES
• Industry Standard
• 24V and 48V Input
Versions
85
80
Package
• Industry Standard Pinout
• 85°C Case Operation
• Short Circuit Protection
• 6-Sided Shielding
• Input Pi Filter
• Regulated Outputs
• 1500V Isolation
75
SMS012YE
SMS012YG
70
TECHNICAL SPECIFICATIONS
65
10
20
30
40
50
LOAD %
60
70
80
90
100
Input
Voltage Range
24 VDC Nominal
48 VDC Nominal
Reflected Ripple
18 - 36 VDC
36 - 72 VDC
25 mA
Efficiency vs. Load (48V Input)
90
85
80
75
70
65
60
55
50
45
Input Reverse Voltage Protection
Shunt Diode
Output
Setpoint Accuracy
±1%
Line Regulation V Min. - V Max., I
Rated
±0.1% V
out
in
out
in
Min. - I
out
Max., V Nom
SMS012ZE
SMS012ZG
Load Regulation I
±0.2% V
out
in
out
Rated
Minimum Output Current
10 % I
out
25% I
Dynamic Regulation, Loadstep
Pk Deviation
Settling Time
out
out
4% V
500 ms
10
20
30
40
50
60
70
80
90
100
LOAD %
Short Circuit / Overcurrent Protection
Current Limit Threshold Range, % of I
Shutdown / Hiccup
110 - 130%
Rated
out
General
Turn-On Time
10 ms
Remote Shutdown
Switching Frequency
Isolation
Positive Logic
400 kHz
Notes
Input - Output
Temperature Coefficient
Operating Temperature
1500 VDC
±0.03%/°C
†
MTBF predictions may vary slightly from model to model.
Specifications typically at 25°C, normal line, and full load, unless
otherwise stated.
Ambient Operating Range 100 LFM
Ambient Operating Range Convection
Storage Range
-40 To +85°C
-40 To +70°C
-40 To +100°C
95%
Soldering Conditions: I/O pins, 260°C, ten seconds; fully compat-
ible with commercial wave-soldering equipment.
Humidity Max., Non-Condensing
Vibration, 3 Axes, 5 Min Each
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.
5 g, 10 - 55 Hz
†
MTBF (Bellcore TR-NWT-000332)
Consult Factory
Consult Factory
0.4 oz
Safety
Weight (approx.)
1