SMT30E-12
Series |
30A
DC/DC Converters
SMT30E-12
SERIES
0V8 TO 3V63
output
•
•
•
•
•
•
•
•
Current rating of 30A
Outputs of between 0.8V – 3.63V, fixed and flexible
Applications for 12V input POL converters
High Power density (430W/in
3
)
High efficiency – typically 91% for 12V in and 3.3V out
POL converter that saves board space
Industry standard footprint
Remote sense and remote ON/OFF
2 YEAR WARRANTY ]
The SMT30E-12 series are non-isolated DC/DC converters
packaged in a single-in-line footprint giving designers a cost
effective solution for conversion from a 8V to 14V input to
output voltages of 0V8 to 3V63. The SMT30E-12 offers both
fixed outputs and wide outputs trim range, which allows
maximum design flexibility and a pathway for future upgrades.
The SMT30E-12 is designed for applications that include
distributed power, workstations, optical network and wireless
applications. Implemented using state of the art surface
mount technology and automated manufacturing techniques,
the SMT30E-12 offers compact size and efficiencies of up to
91%
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Title
B
A
1B
1A
Rev.
10034491
10034247
10033477
10031936
Chg. ORDER
EA
EA
HW
HW
DWG
D.DOBBYN
D.DOBBYN
D. DOBBYN
D. DOBBYN
RESP DESIGNER
A.CRONIN
A.CRONIN
A.CRONIN
A. CRONIN
06/01/05
17/12/04
04-11-04
05-08-04
DATE
SMT30E-12 SERIES
PRODUCT SPECIFICATION
Dwg. No.
Scale
Rev.
Size
Sheet
CHECKED
9701210-0000
NTS
B
A4
1 of
6
SMT30E-12
Series |
30A
DC/DC Converters
Stresses in excess of the maximum ratings can cause permanent damage to the device. Operation of the device is not implied at
these or any other conditions in excess of those given in the specification. Exposure to absolute maximum ratings can adversely
affect device reliability.
Absolute Maximum Ratings
Characteristic
Symbol
Input voltage - continuous
V
Input voltage - peak/surge
Operating temperature
Storage temperature
Output power (3V3W)
V
surge
T
op
T
storage
P
out
(max)
in (cont)
Min
-0.3
-0.3
-40
-40
0
Typ
Max
14
14.5
85
125
86
Units
VDC
VDC
ºC
ºC
W
Notes and Conditions
V
in(+)
- V
in(-)
2s max, non-repetitive
Measured at thermal reference
points, see Note 1 for thermal derating.
Output load current must not exceed
30Amps. Output setpoint default is 0V8.
Place external resistor between trim pin &
ground to trim up to the required setpoint.
See App. Note
175
for trim details.
All specifications are typical at nominal input V
in
=
12
V, Vout=1v5, full load under any resistive load combination at 25°C unless
otherwise stated.
Input Characteristics
Characteristic
Input voltage - operating
Input current - no load
Input current - quiescent
Inrush current (i /t)
Input ripple current
Input fuse
2
Symbol
V
in (oper)
l
in
l
in (off)
l
inrush
Min
8
Typ
12
200
20
0.1
0.2
Max
14
250
Units
V DC
mA DC
mA DC
A
2
s
Arms
A
Notes and Conditions
V
out
= 1V5, enabled
Converter disabled, Remote pin set to 0V8.
Complies with ETS300 132 Part 4.7, with
recommended LISN
Fast blow fuse recommended,
20
Turn On/Off
Characteristic
Input voltage (turn-on)
Turn-on delay – enabled,
then power applied
Symbol
V
in (on)
T
delay
(power
)
Min
Typ
10
Max
8
Units
V DC
msec
Notes and Conditions
With the enable signal asserted, this is the
time from when the input voltage reaches the
minimum specified operating voltage until the
output voltage is within the total regulation
band
V
in
= V
in (nom)
, then enabled. This is the
time taken until the output voltage is within
the total error band
From 10% to 90%; full resistive load, no
external capacitance
Turn-on delay – power
applied, then enabled
Rise time
T
delay
(enable)
2
msec
T
rise
2
msec
Signal Electrical Interface
Characteristic – Signal
Symbol
name
At remote/control
ON/OFF pin
High level input current
I
ih
Acceptable high level
leakage current
Low level input voltage
I
ih
(leakage)
Min
Typ
Max
Units
Notes and Conditions
1
-10
mA
µA
Current flowing into control pin when pin is
pulled high (max. at V
ih
= 14V)
Acceptable leakage current from signal pin
into the open collector driver (neg = from
converter)
Converter is guaranteed on when control Pin
is equal or greater than Vil(min) Volts, or
open cct.
Converter is guaranteed off when control pin
is equal or less than Vil
V
iI
Vil
2.8
V
Remote off
0.8
V
Drawing No.
Rev.
Scale
Size
9701210-0000
B
NTS
A4
Sheet
2
of
6
SMT30E-12 Series | 30A
DC/DC Converters
Reliability and Service Life
Characteristic
Symbol
Mean time between failure MTBF
Min
Typ
TBA
Max
Units
Hours
Mean time between failure
Mean time between failure
MTBF
MTBF
TBA
TBA
Hours
Hours
Notes and Conditions
MIL-HDBK-217F, +N2
V
in
= V
in (nom)
; I
out
= I
out (max)
; ambient
25ºC; ground benign environment
Telecordia SR-332
Demonstrated. This entry will be periodically
updated as the number of test hours
increase
Other Specifications
Characteristic
Switching frequency
Weight
Symbol
F
sw
Min
Typ
650
7
Max
Units
kHz
g
Notes and Conditions
Fixed frequency per phase
Environmental Specifications
Characteristic
Symbol
Thermal performance
Min
-40
Typ
Max
85
Units
ºC
Notes and Conditions
See Note 1 and individual derating curves on
App. Note 175
Referenced ETSI standards:
ETS 300 019: Environmental conditions and environmental tests for telecommunications equipment
ETS 300 019: Part 1-3 (1997) Classification of environmental conditions stationary use at weather protected locations
ETS 300 019: Part 2-3 (1997) Specification of environmental tests stationary use at weather protected locations
EMC
Electromagnetic Compatibility
Phenomenon
Port
Immunity:
Radiated Immunity
ESD
Enclosure
Standard
EN61000-4-3
EN61000-4-2
Test level
Criteria
NP
NP
Notes and Conditions
6kV contact
8kV air
As per ETS 300 386-1 table 5
Performance criteria:
NP: Normal Performance: EUT shall withstand applied test and operate within relevant limits as specified without damage.
RP: Reduced Performance: EUT shall withstand applied test. Reduced performance is permitted within specified limits, resumption
to normal performance shall occur at the cessation of the test.
LFS: Loss of Function (self recovery): EUT shall withstand applied test without damage, temporary loss of function permitted during
test. Unit will self recover to normal performance after test.
Referenced ETSI standards:
ETS 300 386-1 table 5 (1997): Public telecommunication network equipment, EMC requirements
ETS 300 132-2 (1996): Power supply interface at the input to telecommunication equipment: Part 2 operated by direct current (DC)
ETR 283 (1997): Transient voltages at interface A on telecommunication direct current (DC) power distributions
Standards Compliance List
Standard
IEC 60950
EN 60950
UL/cUL 60950
Safety Agency Approvals
Characteristic
cURus
TüV
E174104
TBA
Material Ratings
Drawing No.
Rev.
Scale
Size
9701210-0000
B
NTS
A4
Sheet
3
of
6
SMT30E-12
Series |
30A
DC/DC Converters
Characteristic - Signal
Name
Flammability rating
Model Numbers
Model
Number
SMT30E-12W3V3
Notes and Conditions
UL94V-0
Output
Voltage
0V8 To 3V63
Output Current
(Max.)
30A
Typical
Efficiency
91%
@
Full Load
Max. Load
Regulation
1.5%
Note
Trimmable from 0V8
to 3V63 with an
externally placed
resistor. Ref: App
note 175 for detail
Input
Voltage
8V TO 14VDC
Notes:
1.
See App. Note
175
for a detailed Thermal Derating.
Drawing No.
Rev.
Scale
Size
9701210-0000
B
NTS
A4
Sheet
4
of
6
SMT30E-12 Series | 30A
DC/DC Converters
3V3W
Model
Input Characteristics
Characteristic
Input current - operating
Reflected ripple current
Input capacitance –
internal filter
Input capacitance –
external bypass
Symbol
I
in
I
in (ripple)
C
input
C
bypass
Min
Typ
9.0
0.2
28
Max
9.2
Units
A DC
mA
RMS
µF
µF
Notes and Conditions
V
in =Vin (nom)
; I
out = I out (max.)
;
V
o
= 3V3
I
out
= I
out (max.)
,
Optional customer added capacitance
47
3V3W
Model
Electrical Characteristics - O/P
Characteristic
Symbol
Nominal set-point voltage
V
Total regulation band
Line regulation
Load regulation
Output current continuous
Output current - short
circuit
Output voltage - noise
V
o
o (nom)
Min
0.787
Typ
0V8
3%
Max
0.808
Units
V DC
V DC
Notes and Conditions
V
in
= V
in (nom)
; I
out
= I
out (max)
For all line, static load and temperature
until end of life.
I
out
= I
out (nom)
; V
in (min)
to V
in (max)
Vout
=3V3
V
in
= V
in (nom)
;
I
out (min
) to I
out (max) Vout =
3V3
0.2
1.5
0
4
60
20
30
6.5
%
%
I
out
I
sc
V
pk-pk
V
rms
A DC
A
rms
mV
pk-pk
mV
rms
Continuous, unit auto recovers from short,
V
o
< 50mV
Measurement bandwidth 20MHz
See Application Note
175
for
measurement set-up details
3V3W
Model
Electrical Characteristics - O/P
Characteristic
Symbol
Load transient response -
V
dynamic
peak deviation
Load transient respons e -
T
recovery
recovery
External load capacitance
C
ext
Min
Typ
100
20
Max
Units
mV
µsec
Notes and Conditions
Peak deviation for 50% to 75% step load,
di/dt = 0.5A/µsec
Settling time to within 1% of output set point
voltage for 50% to 75% step load
0
100
10000
µF
3V3W
Model
Protection and Control Features
Characteristic
Symbol
Output voltage trim range
Min
0V8
Typ
-
Max
3V63
Units
Volts
Notes and Conditions
Trim up. Note that the maximum output
power is still
86
W. Derate the maximum
output current accordingly
Open sense voltage
3V3W
Model
Efficiency
Characteristic
Efficiency
Efficiency
10
%
Symbol
η
η
Min
90
84
Typ
91
85
Max
Units
%
%
Notes and Conditions
I
out
= 100% I
out (max)
, V
in
= 12V Vout = 3V3
I
out
= 100% I
out (max)
, V
in
= 12V Vout = 1V5
Drawing No.
Rev.
Scale
Size
9701210-0000
B
NTS
A4
Sheet
5
of
6
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