The SMT40C Series is a new high density open frame non-isolated
converter for space-sensitive applications. Each model has a wide
input range of 10.2 Vdc to 13.8 Vdc and offers a wide 0.9 Vdc to
5.0 Vdc output voltage range with a 40 A load. An external
resistor adjusts the output voltage from its pre-set value of 0.9 V
to any value up to 5 V. Typical efficiencies are 92% at full load
conditions. The SMT40C series offers remote ON/OFF and
overcurrent protection as standard. With full international safety
approval including EN60950 and UL/cUL60950, the SMT40C
reduces compliance costs and time to market.
Embedded Power for
Business-Critical Continuity
SMT40C Series
12 Vin single output
Special Features
• 40 A current rating
• Input voltage range:
10.2 Vdc - 13.8 Vdc
• Output voltage range:
0.9 Vdc - 5.0 Vdc
• Industry leading value
• Cost optimized design
• Excellent transient response
• Output voltage adjustability
• Pathway for future
upgrades
• Supports silicon voltage
migration
• Resulting in reduced
design-in and qualification
time
• Designed in reliability:
MTBF of >4 million hours
per Telcordia SR-332
• Current share
• Available RoHS compliant
• 2 year warranty
Total Power: 200W
Input Voltage: 10.2-13.8 Vdc
# of Outputs: Single
Safety
UL/cUL : UL/cUL CAN/CSA 22.2
No. 60950
UL 60950 File No. E139421
TÜV Product Service
(EN60950:2000)
Certificate No. B 04 08 19870 228
CB report and certificate to
IEC60950-US/6415C/UL
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Embedded Power for
Business-Critical Continuity
All specifications are typical at nominal input Vin = 12V, full load at 25°C unless otherwise stated.
Specifications
OUTPUT SPECIFICATIONS
Voltage adjustability (See Note 5) 0.9-5.0 Vdc
Output setpoint accuracy 1.0% trim resistors ±3.0%
Line regulation Low line to high line ±0.2% max.
Load regulation Full load to min. load ±1.5% max.
Min/max load 0 A/40 A
Overshoot At turn-on 1.0% max.
Undershoot At turn-off 100 mV max.
Ripple and noise (See Note 1) 50 mV pk-pk
5 Hz to 20 MHz 15 mV rms
Transient response 75 mV max. deviation
(See Note 2) 50 μs recovery to
within regulation band
Current share Full load ±10%
INPUT SPECIFICATIONS
Input voltage range 10.2-13.8 Vdc
Input current Minimum load 290 mA
Remote OFF 30 mA
Input current (max.) 22 A max @ lo max
and Vin = 10.2 V
Input reflected ripple (See Note 4) 150 mA pk-pk
Remote ON/OFF
Logic compatibility Positive logic
ON >2.4 Vdc
OFF <0.8 Vdc
Start-up time Power up <30 ms
(See Note 8) Remote ON/OFF <30 ms
Turn ON threshold 9.0 Vdc typ.
Turn OFF threshold 7.6 Vdc typ.
GENERAL SPECIFICATIONS
Efficiency 92% typ.
Switching frequency Fixed 300 kHz typ.
Approvals and (See Note 7) TÜV Product Services
standards IEC60950, UL/cUL60950
Material flammability UL94V-0
Weight 28.3 g (1.0 oz)
Coplanarity 150 μm
MTBF Telcordia SR-332, 4,585,991 hours
method II @ 40 ºC
ENVIRONMENTAL SPECIFICATIONS
Thermal performance Operating ambient, 0 °C to +80 °C
(See Note 9) temperature
Non-operating -40 °C to +125 °C
PROTECTION
Short-circuit Foldback, non-latching
Over-temperature Hiccup, non-latching
RECOMMENDED SYSTEM CAPACITANCE
Input capacitance (See Note 10)
2 x 270 μF/20 mWESR max.
Output capacitance (See Note 10)
3 x 680 μF/10 m
W
ESR max.
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Embedded Power for
Business-Critical Continuity
All specifications are typical at nominal input, full load at 25°C unless otherwise stated.
Specifications
Notes
1 Measured as per recommended set-up. 2 x Cin = 270 μF (20 mW ESR max, 3 x
Cout = 680 μF (10 mW ESR max).
2 di/dt = 10 A/μs, Vin = Nom, Tc = 25 °C, load change = 0.50 lo max. to 0.75 lo
max. and 0.75 lo max. to 0.50 lo max.
3 External input fusing is recommended.
4 Measured with external filter. See Application Note 170 for details.
5 Uses external resistor from trim pin to output ground. See Application Note
170 for details.
6 Signal line assumed <3 m in length.
7 This product is only for inclusion by professional installers within other
equipment and must not be operated as a stand alone product.
8 Power-up is the time from application of dc input to Power Good enabled.
Remote ON/OFF is from ON/OFF asserted high to power good enabled.
9 See Application Note 170 for operation above 50 °C.
10 See Application Note 170 for ripple current requirements.
11 These models have a wide trim output. The unit has an output of 0.9Vdc to 5
Vdc. An external resistor adjusts the output voltage.
12 For redundant current sharing applications that use ORing diodes to separate
the outputs, please add the suffix ‘-S’ to the part number, e.g. SMT40C-
12SADJ-SJ. Please refer to Application Note 170 for further details.
13 TSE RoHS 5/6 (non Pb-free) compliant versions may be available on special
request, please contact your local sales representative for details.
14 NOTICE: Some models do not support all options. Please contact your local
Artesyn representative or use the on-line model number search tool at
http://www.artesyn.com/powergroup/products.htm to find a suitable
alternative.
OUTPUT INPUT OVP OUTPUT OUTPUT OUTPUT
EFFICIENCY REGULATION MODEL
POWER VOLTAGE VOLTAGE (11) CURRENT CURRENT
LINE LOAD NUMBER (13,14)
(MAX.) (MIN.) (MAX.)
200 W 10.2-13.8 Vdc N/A 0.9-5.0 Vdc 0 A 40 A 92% ±0.2% ±1.5% SMT40C-12SADJJ
SMT40C-12SADJ-SJ
Part Number System with Options
Rated Output Current
40 = 40Amps
Number of Outputs
SADJ = Single Adjustable Output
Product Family
SMT = Surface Mount
Performance
C = Cost Optimized
Input Voltage
12 = 10.2 Vdc to 13.8 Vdc
The ultra-wide output voltage trim range offers major advantages to users who
select the SMT40C series. It is no longer necessary to purchase a variety of
modules in order to cover different output voltages. The output voltage can be
trimmed in a range of 0.9 Vdc to 5.0 Vdc. When the SMT40C series converter
leaves the factory the output has been adjusted to the default voltage of 0.9 V.
Output Voltage Adjustment of the SMT40C Series
Current Sharing (12)
No Suffix = Non-isolated
Suffix ‘-S’ = Isolated
Packaging Options(13)
J = Pb-free (RoHS 6/6 compliant)
Embedded Power for
Business-Critical Continuity
Rev.06.25.07
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service marks of Emerson Electric Co.
©2007 Emerson Electric Co.
Emerson Network Power.
The global leader in enabling
business-critical continuity.
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Telephone: +1 760 930 4600
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Network Power assumes no responsibility, and disclaims
all liability for damages resulting from use of this
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All dimensions in inches (mm)
All tolerance ±0.010in (±0.25mm)
unless otherwise stated
2.280
(57.91)
1.450
(36.83)
PCB REF
0.062
(1.57)
0.43
(10.8)
0.105
(2.67)
0.011
(0.27) Typ
0.140
(3.56)
15 x
0.090
(2.29)
2.100
(53.34)
0.045
(1.13)
0.485
(12.33) 1.140
(28.96)
PIN 1 PIN 16
PIN 17
PIN 18
1.345
(3417)
2 x
SMT Pin Size (18 PL)
0.102 (2.59) x 0.062 (1.57)
PIN CONNECTIONS
PIN NO. FUNCTION PIN NO. FUNCTION
1 Current Share 10 Vin
2Trim 11 Vin
3 GND 12 Vout
4 GND 13 Vout
5 GND 14 GND
6 Sense- 15 Vout
7Sense+ 16 GND
8 Remote ON/OFF 17 Mechanical Support
9 Power Good 18 Mechanical Support
