DC-DC CONVERTERS F Class Non-isolated
1
NEW Product
File Name: smt12f_05.pdf Rev (03): 16 Dec 2005
2 YEAR WARRANTY
All specifications are typical at nominal input, full load at 25 C unless otherwise stated.
External output capacitance required (See Note 4)
SPECIFICATIONS
The SMT12F series is a new range of ultra-compact non-isolated point-of-load converters for
space-critical applications. The new SMT12F TyphoonTM family surface-mount converter has a
footprint of just 13.5 x 16 mm - and unlike competitive products on the market, requires only
the addition of a small number of ceramic output capacitors to realise a complete high-
performance point-of-load (POL) solution. The SMT12F is primarily intended for use on very
densely packed, high functionality boards and for powering advanced silicon including network
and communication processors, DSPs, FPGAs and ASICs. A key advantage of the SMT12F is
that it only needs the addition of five 22 F ceramic output capacitors to provide a complete
full-specification, high efficiency POL solution with transient response capabilities that extend
up to 300 A/s. The total board space required for the module and capacitors is a mere 300
mm
2
, facilitating easy co-location with the load.
Designed to meet ultra fast transient requirements
up to 300 A/s step load transients
12 A current rating
Input voltage range: 2.97 Vdc to 5.5 Vdc
Output voltage range: 0.9 Vdc to 3.3 Vdc
Extremely low internal power dissipation
Minimal thermal design concerns
Ideal solution where board space is at a premium
or tighter card pitch is required
Available RoHS compliant
SMT12F Series
3 . 3 V i n a n d 5 V i n s i n g l e o u t p u t
OUTPUT SPECIFICATIONS
Voltage adjustability
5.0 Vin
0.9-3.3 Vdc
Wide trim (See Note 6)
3.3 Vin
0.9-2.6 Vdc
Setpoint accuracy
0.5% typ.
Line regulation
1.0% typ.
Load regulation
1.0% typ.
Total error band
3.0% typ.
Minimum load
0 A
Overshoot/undershoot
None
Ripple and noise
5 Hz to 20 MHz
40 mV pk-pk
(See Note 5)
25 mV rms
Temperature co-efficient
0.01%/C
Transient response
di/dt 300 A/s
12 A load step
(Vout = 3.3 V)
100 mV deviation
<15 s settling time to
within 1.0%
Remote sense
10% Vo compensation
INPUT SPECIFICATIONS
Input voltage range
5 Vin
3.0-5.5 Vdc
(See Note 6)
3.3 Vin
2.97-3.63 Vdc
Input current
No load
100 mA
Input current (max.)
8.5 A max. @ Io max.
and Vout = 3.3 V
Input reflected ripple
100 mA rms
Remote ON/OFF
(See Note 1)
Start-up time
15 ms
EMC CHARACTERISTICS
Electrostatic discharge
EN61000-4-2, IEC801-2
Conducted immunity
EN61000-4-6
Radiated immunity
EN61000-4-3
GENERAL SPECIFICATIONS
Efficiency
5 Vin
95% typ.
3.3 Vin
92% typ.
Insulation voltage
Non-isolated
Switching frequency
600 kHz
Approvals and
EN60950
standards
UL/cUL60950
Material flammability
UL94V-0
Dimensions
(LxWxH)
16.00 x 13.46 x 7.93 mm
0.63 x 0.52 x 0.31 inches
Weight
3 g (0.11 oz)
Coplanarity
100 m
MTBF
Telcordia SR-332
10,000,000 hours
ENVIRONMENTAL SPECIFICATIONS
Thermal performance
Operating ambient,
-40 C to +85 C
(See Note 2)
temperature
Non-operating
-40 C to +125 C
PROTECTION
Short-circuit
Continuous
Thermal
Automatic recovery
File Name: smt12f_05.pdf Rev (03): 16 Dec 2005
For the most current data and application support visit www.artesyn.com/powergroup/products.htm
DC-DC CONVERTERS F Class Non-isolated
2
NEW Product
N
No
otte
es
s
1
The SMT12F features an `Active Low' Remote ON/OFF operation. If you
are not using the Remote ON/OFF pin, leave the pin open (the converter
will be on). The Remote ON/OFF pin is referenced to ground.
The following conditions apply for the SMT12F:
Configuration
Converter Operation
Remote pin open circuit
Unit is ON
Remote pin pulled low
Unit is ON
Remote pin pulled high
Unit is OFF
An `Active High' Remote ON/OFF version is also possible with this
converter. To order please place the suffix `R' towards the end of the part
number, e.g. SMT12F-05W3V3RJ.
2
See Figures 1 and 2 for sample derating curves. For the full set of
derating curves see Application Note 165.
S M T 1 2 F - 0 5 W 3 V 3 J
Part Number System with Options
Product Family
SMT = Surface Mount
Rated Output Current
12 = 12 Amps
Input Voltage
03 = 2.97 Vdc to 3.63 Vdc
05 = 3.0 Vdc to 5.5 Vdc
Type of Output
S = Single Fixed
W = Wide
Performance
F = Enhanced/Fast Transient
The ultra-wide output voltage trim range offers major advantages to users who select the
SMT12F. 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
2.6 Vdc or 0.9 Vdc to 3.3 Vdc. When the SMT12F-05W3V3J converter leaves the factory
the output has been adjusted to the default voltage of 3.3 V. When the SMT12F-03W2V6J
converter leaves the factory the output has been adjusted to the default voltage of 2.6 V.
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International Safety Standard Approvals
UL/cUL CAN/CSA 22.2 No. E174104
UL 60950 File No. E174104
TV Product Service (EN60950) Certificate No. B 04 04 38572 041.
CB Report and Certificate to IEC60950 DE3-52484
3
A 22 F ceramic input capacitor may be required for test purposes only.
See Application Note 165 for further details.
4
An external output capacitor is required for basic operation. Required
capacitance is a minimum of 110 F to meet the performance
parameters. This can be made up of any combination of 22 F or 44 F
multi-layer ceramic capacitors in the appropriate voltage rating.
5
Ripple and Noise is worst case measurement. Typical value is 26 mV pk-
pk.
6
When Vin <4.5 V, Vout max = 2.5 V for model SMT12F-03W2V6.
7
TSE RoHS 5/6 (non Pb-free) compliant versions may be available on
special request, please contact your local sales representative for details.
8
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.
V
in
V
out
Unit
4.5-5.5 Vdc
0.9-3.3 Vdc
05W3V3J
< 4.5 Vdc
0.9-2.0 Vdc
05W3V3J
2.97-3.63 Vdc 0.9-2.6 Vdc
03W2V6J
SMT12F Series
3 . 3 V i n a n d 5 V i n s i n g l e o u t p u t
OUTPUT
INPUT
OUTPUT
OUTPUT
OUTPUT
EFFICIENCY
REGULATION
MODEL
POWER
VOLTAGE
VOLTAGE
CURRENT
CURRENT
(TYP.)
LINE
LOAD
NUMBER
(7, 8)
(MAX.)
(MIN.)
(MAX.)
31.2 W
2.97-3.63 Vdc
0.9-2.6 Vdc
0 A
12 A
92%
1.0%
1.0%
SMT12F-03W2V6J
39.6 W
3.0-5.5 Vdc
0.9-3.3 Vdc
0 A
12 A
95%
1.0%
1.0%
SMT12F-05W3V3J
Output Voltage
2V6 = 0.9 Vdc to 2.6 Vdc
3V3 = 0.9 Vdc to 3.3 Vdc
Packaging Options
s
(7)
J = Pb-free (RoHS 6/6 compliant)
For the most current data and application support visit www.artesyn.com/powergroup/products.htm
DC-DC CONVERTERS F Class Non-isolated
3
NEW Product
File Name: smt12f_05.pdf Rev (03): 16 Dec 2005
0
10
20
30
40
50
70
0
6
8
10
OUTPUT CURRENT (A)
Nat conv
200 LFM
400 LFM
80
14
12
TEMPERATURE (C)
4
2
60
90
Figure 1 - Derating Curve
Vin = 5 V, Output Voltage = 1.8 V (See Note A)
OUTPUT CURRENT (A)
AMBIENT TEMPERATURE (C)
0
2
4
6
8
10
12
14
0
10
20
30
40
50
60
70
80
400 LFM
200 LFM
Nat conv
Figure 2 -
Derating Curve
Vin = 5 V, Output Voltage = 1.5 V (See Note A)
N
No
otte
es
s
A
Derating curves represent the conditions at which internal components
are within the Artesyn derating guidelines.
B
Vin = 5 V, Vout = 1.5 V.
Figure 3 - Typical Transient Response (source)
12 A load Step di/dt = 300 A/s
Channel 1: Deviation on unit = 2.3%, Settling Time = 16 s
Vin = 5 V, Vout = 1.5 V
8
9
10
5
4
3
6
7
2
1
SMT12F
Margin Down
Margin Up
Remote ON/OFF
V
in
GND
R
trim
(for trim
down)
C
out
= 110
F
(See note C)
R
L
O
A
D
Power Good
V
out
+V
sense
-V
sense
Figure 4 - Standard Application Drawing
SMT12F Series
3 . 3 V i n a n d 5 V i n s i n g l e o u t p u t
File Name: smt12f_05.pdf Rev (03): 16 Dec 2005
Please consult our website for the following items:
Application Note
www.artesyn.com
Datasheet Artesyn Technologies 2005
The information and specifications contained in this datasheet are believed to be correct at time of publication. However, Artesyn Technologies accepts no responsibility for consequences arising
from printing errors or inaccuracies. The information and specifications contained or described herein are subject to change in any manner at any time without notice. No rights under any patent
accompany the sale of any such product(s) or information contained herein.
For the most current data and application support visit www.artesyn.com/powergroup/products.htm
DC-DC CONVERTERS F Class Non-isolated
4
NEW Product
Figure 5 - Mechanical Drawing
SEATING
PLANE
0.630
0.010
[16.00
0.25]
0.312 [7.93] MAX.
INSTALLED HT.
0.520
0.010
[13.46
0.25]
0.000 [0.00]
0.103 [2.60]
0.188 [4.76]
0.273 [6.92]
0.358 [9.08]
0.443 [11.24]
0.528 [13.40]
0.050 [1.26]
Dimensions in Inches (mm)
Tolerances (unless otherwise specified)
0.005 (0.127)
6
3
5 4
2 1
8
7
9
10
0.470 [11.94]
BOTTOM VIEW
0.340 [8.64]
0.098 [2.48]
0.580 [14.73]
0.250 [6.35]
0.000 [0.00]
0.065 [1.65]
0.000 [0.00]
0.455 [11.56]
TOP VIEW
SIDE VIEW
P
Piin
n N
No
o.. P
Piin
n D
De
es
sc
crriip
pttiio
on
n
1
Trim:
A 1% 0.1 W resistor must be directly connected between
this pin and pin 8 (GND) to set the output voltage to a lower value
than 3.3 V. The temperature stability of the resistor should be 100
ppm/C or better. The set point range for the 3.3 V model is from
3.3 V to 0.9 V. The resistor required for a given output voltage may
be calculated from the following formula.
If left open circuit the output voltage will default to 3.3 V.
The set point range for the 2.6 V model is from 2.6-0.9 V. The
resistor required for a given output voltage may be calculated from
the following formula
If left open circuit the output voltage will default to 2.6 V.
For further information on output voltage adjustment consult the
Application Note 165.
2
Margin+:
When this input is asserted to High, the output voltage
is increased by 5%. This function is independant of trim and
sense.
P
Piin
n N
No
o.. P
Piin
n D
De
es
sc
crriip
pttiio
on
n
3
Remote ON/OFF:
Applying a high level signal to this input
disables the module's output and turns off the output voltage.
When the Remote ON/OFF control is active, the input current
drawn by the regulator is significantly reduced. If the Remote
ON/OFF pin is left open-circuit, the module will produce an output
whenever a valid input source is applied.
4
Margin-:
When this input is asserted high, the output voltage is
decreased by 5% from the nominal. This functions is independant
of trim and sense.
5
V sense +:
The sense input allows the regulation circuit to
compensate for voltage drop between the module and the load.
For optimal voltage accuracy Vo Sense should be connected to
Vout node of bypass capacitor. It can also be left disconnected.
6
V sense -:
The VSense should be connected to the ground of a
bypass capacitor near the load or left open circuit.
7
+Vout:
The regulated positive power output with respect to the
GND node.
8
Ground:
This is the common ground connection for the Vin and
Vout power connections. It is also the 0 Vdc reference for the
control inputs.
9
+Vin:
The positive input voltage power node to the module,which
is referenced to common GND.
10
Power Good:
This pin indicates the status of the output voltage.
Power Good is driven low if output voltage deviates outside of
specified limits.
SMT12F Series
3 . 3 V i n a n d 5 V i n s i n g l e o u t p u t
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