DCM12S0A0S12NFA - Delta Electronics

DCM12S0A0S12NFA
FEATURES
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Delphi DCM, Non-Isolated Point of Load
DC/DC Power Modules: 4.5~14Vin,
0.69-5.0V/12Aout
The Delphi Series DCM, 4.5-14V input, single output,
non-isolated Point of Load DC/DC converters are the latest
offering from a world leader in power systems technology
and manufacturing -- Delta Electronics, Inc. The DCM
series provides a programmable output voltage from 0.69
V to 5.0V using an external resistor and has flexible and
programmable tracking features to enable a variety of
startup voltages as well as tracking between power
modules. This product family is available in surface mount
and provides up to 12A of output current in an industry
standard footprint. With creative design technology and
optimization of component placement, these converters
possess outstanding electrical and thermal performance,
as well as extremely high reliability under highly stressful
operating conditions
DATASHEET
DS_ DCM12S0A0S12NFA _10022013
High efficiency:
95.4% @ 12Vin, 5.0V/12A out
93.3% @ 12Vin, 3.3V/12A out
91.6% @ 12Vin, 2.5V/12A out
89.2% @ 12Vin, 1.8V/12A out
85.6% @ 12Vin, 1.2V/12A out
80.2% @ 10Vin, 0.69V/12A out
Small size and low profile:
20.3x 11.4x 8.5mm (0.8”x 0.45”x 0.33”)
Surface mount packaging
Standard footprint
Voltage and resistor-based trim
Pre-bias startup
Output voltage tracking
No minimum load required
Output voltage programmable from
0.69Vdc to 5.0Vdc via external resistor
Fixed frequency operation
Input UVLO, output OCP
Remote on/off
ISO 9001, TL 9000, ISO 14001, QS9000,
OHSAS18001 certified manufacturing facility
UL/cUL 60950-1 (US & Canada)
CE mark meets 73/23/EEC and 93/68/EEC
directives
OPTIONS

Negative/Positive on/off logic

Tracking feature

Sequence feature
APPLICATIONS

Telecom / DataCom

Distributed power architectures

Servers and workstations

LAN / WAN applications

Data processing applications
E-mail: [email protected]
http://www.deltaww.com/dcdc
P1
TECHNICAL SPECIFICATIONS
PARAMETER
NOTES and CONDITIONS
DCM12S0A0S12P(N)FA
Min.
ABSOLUTE MAXIMUM RATINGS
Input Voltage (Continuous)
Sequencing Voltage
Operating Ambient Temperature
Storage Temperature
INPUT CHARACTERISTICS
Operating Input Voltage
Input Under-Voltage Lockout
Turn-On Voltage Threshold
Turn-Off Voltage Threshold
Lockout Hysteresis Voltage
Maximum Input Current
No-Load Input Current (VIN = 12.0Vdc, Io =
0, module enabled)
Off Converter Input Current (VIN = 12.0Vdc,
module disabled)
Inrush Transient
Input Reflected Ripple Current, peak-to-peak
Input Ripple Rejection(120Hz)
OUTPUT CHARACTERISTICS
Output Voltage Set Point
Output Voltage Adjustable Range
Output Voltage Regulation
Line(VIN=VIN, min to VIN, max)
Load(Io=Io, min to Io, max)
Temperature(Tref=TA, min to TA, max)
Total Output Voltage Range
Output Voltage Ripple and Noise
Peak-to-Peak
RMS
Output Current Range
Output Voltage Over-shoot at Start-up
Output DC Current-Limit Inception
Output Short-Circuit Current (Hiccup Mode)
DYNAMIC CHARACTERISTICS
Dynamic Load Response
Positive Step Change in Output Current
Negative Step Change in Output Current
Settling Time to 10% of Peak Deviation
Turn-On Transient
Delay Time, From On/Off Control
Delay Time, From Input
Output Voltage Rise Time
Output Capacitive Load
EFFICIENCY
Vo=5.0V
Vo=3.3V
Vo=2.5V
Vo=1.8V
Vo=1.2V
Vo=0.69V
FEATURE CHARACTERISTICS
Switching Frequency
Synchronization Frequency Range
ON/OFF Control, (Negative logic)
Logic Low Voltage
Logic High Voltage
Logic Low Current
Logic High Current
ON/OFF Control, (Positive Logic)
Logic High Voltage
Logic Low Voltage
Logic Low Current
Logic High Current
Tracking Slew Rate Capability
Tracking Delay Time
Tracking Accuracy
GENERAL SPECIFICATIONS
MTBF
Weight
Vo ≦ Vin –0.6
Typ.
Max.
Units
-0.3
-0.3
15
Vin max
V
V
-40
-55
85
125
℃
℃
4.5
14.0
V
11.5
V
V
V
A
mA
mA
mA
4.45
4.2
0.25
Vin=4.5V to14V, Io=Io,max
Vo,set = 0.69 Vdc
Vo,set = 3.3 Vdc
26
50
1.2
(5Hz to 20MHz, 1μH source impedance; Vin =0 to 14V,
Io= Iomax ;
with 0.5% tolerance for external resistor used to set
output voltage)
(selected by an external resistor)
For Vo>=2.5V
For Vo<2.5V
For Vo>=2.5V
For Vo<2.5V
For Vo>=2.5V
For Vo<2.5V
Over sample load, line and temperature
5Hz to 20MHz bandwidth
Full Load, 1µF+10uF+47uF ceramic
A2S
mAp-p
dB
+1.5
%Vo,set
0.69
-1.5
5.0
V
-2.5
0.4
10
10
5
0.5
5
+2.5
%Vo,set
mV
Vo,set
mV
mV
%Vo,set
mV
Vo,set
%Vo,set
Full Load, 1µF+10uF+47uF ceramic
Vo,set
65
80
mV
23
28
12
5
150
2
mV
A
% Vo,set
% Io
Adc
360
400
50
mV
mV
µs
4
3.5
5
ms
ms
ms
µF
0
Io,s/c
10µF Tan & 1µF Ceramic load cap, 1A/µs
0% Io, max to 50% Io, max
50% Io, max to 0% Io, max
Io=Io.max
Time for Von/off to Vo=10% of Vo,set
Time for Vin=Vin,min to Vo=10% of Vo,set
Time for Vo to rise from 10% to 90% of Vo,set
Full load; ESR ≧0.15mΩ
1
12.5
45
47
Vin=12V, 100% Load
Vin=12V, 100% Load
Vin=12V, 100% Load
Vin=12V, 100% Load
Vin=12V, 100% Load
Vin=10V, 100% Load
800
95.4
93.3
91.6
89.2
85.6
80.2
%
%
%
%
%
%
520
500
600
kHz
kHz
Module On, Von/off
Module Off, Von/off
Module On, Ion/off
Module Off, Ion/off
0
2.0
1
Vin,max
10
1
V
V
µA
mA
Module On, Von/off
Module Off, Von/off
Module On, Ion/off
Module Off, Ion/off
Vin-1
Vin,max
3.5
3
25
0.5
V
V
mA
µA
V/msec
ms
mV
mV
Delay from Vin.min to application of tracking voltage
Power-up
0.5V/mS
Power-down 0.5V/mS
10
Io=80% of Io, max; Ta=25°C
22
100
150
3.8
M hours
grams
(TA = 25°C, airflow rate = 300 LFM, Vin = 4.5Vdc and 14.0Vdc, nominal Vout unless otherwise noted.)
DS_DCM12S0A0S12NFA_10022013
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http://www.deltaww.com/dcdc
P2
ELECTRICAL CHARACTERISTICS CURVES
Figure 1: Converter efficiency vs. output current (0.69Vout)
Figure 2: Converter efficiency vs. output current (1.2Vout)
Figure 3: Converter efficiency vs. output current (1.8Vout)
Figure 4: Converter efficiency vs. output current (2.5Vout)
Figure 5: Converter efficiency vs. output current 3.3Vout)
Figure 6: Converter efficiency vs. output current (5.0Vout)
DS_DCM12S0A0S12NFA_10022013
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P3
ELECTRICAL CHARACTERISTICS CURVES(CON.)
Figure 7: Output ripple & noise at 7Vin, 0.69V/12A out
Figure 8: Output ripple & noise at 12Vin, 1.2V/12A out
CH1:VOUT, 20mV/div, 1uS/div
CH1:VOUT, 20mV/div, 1uS/div
Figure 9: Output ripple & noise at 12Vin, 1.8V/12A out
Figure 10: Output ripple & noise at 12Vin, 2.5V/12A out
CH1:VOUT, 20mV/div, 1uS/div
CH1:VOUT, 20mV/div, 1uS/div
Figure 11: Output ripple & noise at 12Vin, 3.3V/12A out
Figure 12: Output ripple & noise at 12Vin, 5.0V/12A out
CH1:VOUT, 20mV/div, 1uS/div
CH1:VOUT, 20mV/div, 1uS/div
DS_DCM12S0A0S12NFA_10022013
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P4
ELECTRICAL CHARACTERISTICS CURVES(CON.)
Figure 13: Turn on delay time at 7Vin, 0.69V/12A out.
Figure 14: Turn on delay time at 12Vin, 1.2V/12A out.
(Top: VOUT, 0.2V/div; Bottom: VIN, 5V/div; 2mS/div)
(Top: VOUT, 0.5V/div; Bottom: VIN, 5V/div; 2mS/div)
Figure 15: Turn on delay time at 12Vin, 1.8V/12A out.
Figure 16: Turn on delay time at 12Vin, 2.5V/12A out.
(Top: VOUT, 0.5V/div; Bottom: VIN, 5V/div; 2mS/div)
(Top: VOUT, 1V/div; Bottom: VIN, 5V/div; 2mS/div)
Figure 17: Turn on delay time at 12Vin, 3.3V/12A out.
Figure 18: Turn on delay time at 12Vin, 5.0V/12A out.
(Top: VOUT, 1V/div; Bottom: VIN, 5V/div; 2mS/div)
(Top: VOUT, 2V/div; Bottom: VIN, 5V/div; 2mS/div)
DS_DCM12S0A0S12NFA_10022013
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P5
ELECTRICAL CHARACTERISTICS CURVES(CON.)
Figure 19: Turn on delay time at remote on 7Vin, 0.69V/12A out.
Figure 20: Turn on delay time at remote on 12Vin, 1.2V/12A out.
(Top: VOUT, 0.2V/div; Bottom: ON/OFF, 2V/div; 2mS/div)
(Top: VOUT, 0.5V/div; Bottom: ON/OFF, 2V/div; 2mS/div)
Figure 21: Turn on delay time at remote on 12Vin, 1.8V/12A out.
Figure 22: Turn on delay time at remote on 12Vin, 2.5V/12A out.
(Top: VOUT, 1V/div; Bottom: ON/OFF, 2V/div; 2mS/div)
(Top: VOUT, 1V/div; Bottom: ON/OFF, 2V/div; 2mS/div)
Figure 23: Turn on delay time at remote on 12Vin, 3.3V/12A out.
Figure 24: Turn on delay time at remote on 12Vin, 5.0V/12A out.
(Top: VOUT, 2V/div; Bottom: ON/OFF, 2V/div; 2mS/div)
(Top: VOUT, 0.2V/div; Bottom: ON/OFF, 2V/div; 2mS/div)
DS_DCM12S0A0S12NFA_10022013
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P6
ELECTRICAL CHARACTERISTICS CURVES(CON.)
Figure 25: Tracking function, Vtracking=1V, Vout= 0.69V, full load
Figure 26: Tracking function, Vtracking=2V, Vout= 1.2V, full load
(Top: VOUT, 0.5V/div; Bottom: Tracking, 0.5V/div, 500uS/div)
(Top: VOUT, 0.5V/div; Bottom: Tracking, 0.5V/div, 500uS/div)
Figure 27: Tracking function, Vtracking=2.5V, Vout= 1.8V, full load
Figure 28: Tracking function, Vtracking=3V, Vout= 2.5V, full load
(Top: VOUT, 1V/div; Bottom: Tracking, 1V/div, 500uS/div)
(Top: VOUT, 1V/div; Bottom: Tracking, 1V/div, 500uS/div)
Figure 29: Tracking function, Vtracking=4V, Vout= 3.3V, full load
Figure 30: Tracking function, Vtracking=6V, Vout= 5.0V, full load
(Top: VOUT, 2V/div; Bottom: Tracking, 2V/div, 500uS/div)
(Top: VOUT, 2V/div; Bottom: Tracking, 2V/div, 500uS/div)
DS_DCM12S0A0S12NFA_10022013
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P7
ELECTRICAL CHARACTERISTICS CURVES(CON.)
Figure 31: Typical transient response to step load change at
Figure 32: Typical transient response to step load change at
1A/μS from 0%~ 50%~0% of Io, max at 7Vin, 0.69Vout
1A/μS from 0%~ 50%~0% of Io, max at 12Vin, 1.2Vout
(Cout = 1uF ceramic, 47uF+10μFceramic)
(Cout = 1uF ceramic, 47uF+10μFceramic)
CH1 : VOUT, 0.2V/div, 100uS/div
CH1 : VOUT, 0.2V/div, 100uS/div
Figure 33: Typical transient response to step load change at
Figure 34: Typical transient response to step load change at
1A/μS from 0%~ 50%~0% of Io, max at 12Vin, 1.8Vout
1A/μS from 0%~ 50%~0% of Io, max at 12Vin, 2.5Vout
(Cout = 1uF ceramic, 47uF+10μFceramic)
(Cout = 1uF ceramic, 47uF+10μFceramic)
CH1 : VOUT, 0.2V/div, 100uS/div
CH1: VOUT, 0.2V/div, 100uS/div
DS_DCM12S0A0S12NFA_10022013
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P8
ELECTRICAL CHARACTERISTICS CURVES(CON.)
Figure 35: Typical transient response to step load change at
Figure 36: Typical transient response to step load change at
1A/μS from 0%~ 50%~0% of Io, max at 12Vin, 3.3Vout
1A/μS from 0%~ 50%~0% of Io, max at 12Vin, 5.0Vout
(Cout = 1uF ceramic, 47uF+10μFceramic)
(Cout = 1uF ceramic, 47uF+10μFceramic)
CH1 : VOUT, 0.2V/div, 100uS/div
CH1 : VOUT, 0.2V/div, 100uS/div
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P9
TEST CONFIGURATIONS
DESIGN CONSIDERATIONS
Input Source Impedance
To maintain low noise and ripple at the input voltage, it is
critical to use low ESR capacitors at the input to the
module. A highly inductive source can affect the stability
of the module. An input capacitance must be placed close
to the modules input pins to filter ripple current and ensure
module stability in the presence of inductive traces that
supply the input voltage to the module.
Figure 37: Input reflected-ripple test setup
COPPER STRIP
Vo
1uF
10uF
SCOPE
tantalum ceramic
Resistive
Load
GND
Note: Use a 10μF tantalum and 1μF capacitor. Scope
measurement should be made using a BNC connector.
Figure 38: Peak-peak output noise and startup transient
measurement test setup.
CONTACT AND
DISTRIBUTION LOSSES
VI
Vo
II
Io
LOAD
SUPPLY
GND
CONTACT RESISTANCE
Figure 39: Output voltage and efficiency measurement test
setup
Note: All measurements are taken at the module terminals.
When the module is not soldered (via socket), place
Kelvin connections at module terminals to avoid
measurement errors due to contact resistance.
(
Vo  Io
)  100 %
Vi  Ii
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P10
DESIGN CONSIDERATIONS (CON.)
FEATURES DESCRIPTIONS
Safety Considerations
Remote On/Off
For safety-agency approval the power module must be
The DCM series power modules have an On/Off pin for
installed in compliance with the spacing and separation
remote On/Off operation. Both positive and negative
requirements of the end-use safety agency standards.
On/Off logic options are available in the DCM series
power modules.
For the converter output to be considered meeting the
requirements of safety extra-low voltage (SELV), the input
For positive logic module, connect an open collector
must meet SELV requirements. The power module has
(NPN) transistor or open drain (N channel) MOSFET
extra-low voltage (ELV) outputs when all inputs are ELV.
between the On/Off pin and the GND pin (see figure 40).
Positive logic On/Off signal turns the module ON during
The input to these units is to be provided with a fast acting
the logic high and turns the module OFF during the logic
fuse with a maximum rating of 15A in the positive input
low. When the positive On/Off function is not used, leave
lead.
the pin floating or tie to Vin (module will be On).
Input Under voltage Lockout
For negative logic module, the On/Off pin is pulled high
At input voltages below the input under voltage lockout
with an external pull-up 5kΩ resistor (see figure 41).
limit, the module operation is disabled. The module will
Negative logic On/Off signal turns the module OFF during
begin to operate at an input voltage above the under
logic high and turns the module ON during logic low. If the
voltage lockout turn-on threshold.
negative On/Off function is not used, leave the pin floating
or tie to GND. (module will be on)
Over-Current Protection
To provide protection in an output over load fault
Vo
V in
I O N /O F F
O n/O ff
condition, the unit is equipped with internal over-current
RL
protection. When the over-current protection is triggered,
the unit enters hiccup mode. The units operate normally
Q1
GND
once the fault condition is removed.
Figure 40: Positive remote On/Off implementation
Vo
V in
R pullup
I O N /O FF
O n/O ff
RL
Q1
GND
Figure 41: Negative remote On/Off implementation
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P11
FEATURES DESCRIPTIONS (CON.)
Vo
Remote Sense
RLoad
TRIM
Rtrim
The DCM provide Vo remote sensing to achieve proper
GND
regulation at the load points and reduce effects of
distribution losses on output line. In the event of an open
remote sense line, the module shall maintain local sense
regulation through an internal resistor. The module shall
correct for a total of 0.5V of loss. The remote sense line
impedance shall be < 10.
Distribution Losses
using an external resistor
Table 1 provides Rtrim values required for some common
output voltages, By using a 0.5% tolerance trim resistor, set
Distribution Losses
Vo
Vin
Figure 43: Circuit configuration for programming output voltage
point tolerance of ±1.5% can be achieved as specified in
the electrical specification.
Table 1
Sense
RL
GND
Distribution
Losses
Distribution
Losses
Figure 42: Effective circuit configuration for remote sense
operation
Output Voltage Programming
The output voltage of the DCM can be programmed to any
Certain restrictions apply on the output voltage set point
voltage between 0.69Vdc and 5.0Vdc by connecting one
depending on the input voltage. These are shown in the
resistor (shown as Rtrim in Figure 43) between the TRIM
Output Voltage vs. Input Voltage Set Point Area plot in
and GND pins of the module. Without this external resistor,
Figure 44. The Upper Limit curve shows that for output
the output voltage of the module is 0.69 Vdc. To calculate
voltages of
the value of the resistor Rtrim for a particular output
lower than the maximum of 14V. The Lower Limit curve
voltage Vo, please use the following equation:
shows that for output voltages of 3.3V and higher, the input
 6.9 
Rtrim  
K
Vo  0.69 
voltage needs to be larger than the minimum of 4.5V.
0.9V and lower, the input voltage must be
Rtrim is the external resistor in kΩ
Vo is the desired output voltage.
For example, to program the output voltage of the DCM
module to 5.0Vdc, Rtrim is calculated as follows:
 6.9 
Rtrim  
K  1.601K
 5.0  0.69 
Figure 44: Output Voltage vs. Input Voltage Set Point Area plot
showing limits where the output voltage can be set for different
input voltages.
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P12
FEATURE DESCRIPTIONS (CON.)
When an analog voltage is applied to the SEQ pin, the
output voltage tracks this voltage until the output reaches
Voltage Margining
the set-point voltage. The final value of the SEQ voltage
Output voltage margining can be implemented in the DCM
modules by connecting a resistor, R margin-up, from the
Trim pin to the ground pin for margining-up the output
voltage and by connecting a resistor, Rmargin-down, from
the Trim pin to the output pin for margining-down. Figure
45 shows the circuit configuration for output voltage
margining. If unused, leave the trim pin unconnected. A
calculation tool is available from the evaluation procedure
which computes the values of Rmargin-up and
Rmargin-down for a specific output voltage and margin
percentage.
must be set higher than the set-point voltage of the
module. The output voltage follows the voltage on the
SEQ pin on a one-to-one basis. By connecting multiple
modules together, multiple modules can track their output
voltages to the voltage applied on the SEQ pin.
For proper voltage sequencing, first, input voltage is
applied to the module. The On/Off pin of the module is
left unconnected (or tied to GND for negative logic
modules or tied to VIN for positive logic modules) so that
the module is ON by default. After applying input voltage
to the module, a minimum 10msec delay is required
before applying voltage on the SEQ pin. This delay gives
Vin
the module enough time to complete its internal power-up
Vo
Rmargin-down
Q1
On/Off Trim
Rmargin-up
Rtrim
Q2
GND
soft-start cycle. During the delay time, the SEQ pin
should be held close to ground (nominally 50mV ± 20
mV). This is required to keep the internal op-amp out of
saturation thus preventing output overshoot during the
start of the sequencing ramp. By selecting resistor R1
(see Figure 47) according to the following equation
Figure 45: Circuit configuration for output voltage margining
 24950 
R1  

Vin  0.05 
Output Voltage Sequencing
The DCM 12V 12A modules include a sequencing
feature, EZ-SEQUENCE that enables users to implement
various types of output voltage sequencing in their
applications. This is accomplished via an additional
sequencing pin. When not using the sequencing feature,
either tie the SEQ pin to VIN or leave it unconnected.
Figure 46: Sequential Start-up
The voltage at the sequencing pin will be 50mV when the
sequencing signal is at zero.
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P13
FEATURE DESCRIPTIONS (CON.)
Power Good
After the 10msec delay, an analog voltage is applied to
The DCM modules provide a Power Good (PGOOD)
the SEQ pin and the output voltage of the module will
signal that is implemented with an open-drain output to
track this voltage on a one-to-one volt bases until the
indicate that the output voltage is within the regulation
output reaches the set-point voltage. To initiate
limits of the power module. The PGOOD signal will be
simultaneous shutdown of the modules, the SEQ pin
de-asserted to a low state if any condition such as over
voltage is lowered in a controlled manner. The output
temperature, over current or loss of regulation occurs that
voltage of the modules tracks the voltages below their
would result in the output voltage going ±10% outside the
set-point voltages on a one-to-one basis. A valid input
set point value. The PGOOD terminal should be
voltage must be maintained until the tracking and output
connected through a pull up resistor (suggested value
voltages reach ground potential.
100KΩ) to a source of 5VDC or lower.
When using the EZ-SEQUENCETM feature to control
start-up of the module, pre-bias immunity during startup is
Monotonic Start-up and Shutdown
disabled. The pre-bias immunity feature of the module
relies on the module being in the diode-mode during
The DCM 12A modules have monotonic start-up and
start-up. When using the EZ-SEQUENCETM feature,
shutdown behavior for any combination of rated input
modules goes through an internal set-up time of 10msec,
voltage, output current and operating temperature range.
and will be in synchronous rectification mode when the
voltage at the SEQ pin is applied. This will result in the
Synchronization
module sinking current if a pre-bias voltage is present at
the output of the module.
The DCM 12A modules can be synchronized using an
external signal. Details of the SYNC signal are provided in
below table. If the synchronization function is not being
used, leave the SYNC pin floating.
Figure 47: Circuit showing connection of the sequencing signal to
the SEQ pin.
Simultaneous
DS_DCM12S0A0S12NFA_10022013
Simultaneous
tracking (Figure 41) is implemented by using the
TRACK pin. The objective is to minimize the voltage
difference between the power supply outputs during power up
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P14
THERMAL CONSIDERATIONS
THERMAL CURVES
Thermal management is an important part of the system
design. To ensure proper, reliable operation, sufficient
cooling of the power module is needed over the entire
temperature range of the module. Convection cooling is
usually the dominant mode of heat transfer.
Hence, the choice of equipment to characterize the
thermal performance of the power module is a wind
tunnel.
Thermal Testing Setup
Delta’s DC/DC power modules are characterized in
heated vertical wind tunnels that simulate the thermal
environments encountered in most electronics
equipment. This type of equipment commonly uses
vertically mounted circuit cards in cabinet racks in which
the power modules are mounted.
Figure 49: Temperature measurement location
The allowed maximum hot spot temperature is defined at 125℃
Output Current(A)
DCM12S0A0S12 Output Current vs. Ambient Temperature and Air Velocity
@Vin = 12V, Vout=5.0V (Either Orientation)
12
Natural
Convection
10
The following figure shows the wind tunnel
characterization setup. The power module is mounted
on a test PWB and is vertically positioned within the
wind tunnel.
100LFM
8
6
4
PWB
FANCING PWB
2
MODULE
0
25
30
35
40
45
50
55
60
65
70
75
80
85
Ambient Temperature (℃)
Figure 50: Output current vs. ambient temperature and air
[email protected]=12V, Vout=5.0V(Either Orientation)
AIR VELOCITY
AND AMBIENT
TEMPERATURE
SURED BELOW
THE MODULE
50.8(2.00")
Output Current(A)
AIR FLOW
DCM12S0A0S12 Output Current vs. Ambient Temperature and Air Velocity
@Vin = 12V, Vout=3.3V (Either Orientation)
12
Natural
Convection
10
8
6
Note: Wind Tunnel Test Setup Figure Dimensions are in millimeters and (Inches)
Figure 48: Wind tunnel test setup
4
2
Thermal Derating
0
25
Heat can be removed by increasing airflow over the
module. To enhance system reliability, the power
module should always be operated below the maximum
operating temperature. If the temperature exceeds the
maximum module temperature, reliability of the unit may
be affected.
DS_DCM12S0A0S12NFA_10022013
30
35
40
45
50
55
60
65
70
75
80
85
Ambient Temperature (℃)
Figure 51: Output current vs. ambient temperature and air
[email protected]=12V, Vout=3.3V(Either Orientation)
E-mail: [email protected]
http://www.deltaww.com/dcdc
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THERMAL CURVES
THERMAL CURVES
Output Current(A)
DCM12S0A0S12 Output Current vs. Ambient Temperature and Air Velocity
@Vin = 12V, Vout=2.5V (Either Orientation)
Output Current(A)
DCM12S0A0S12 Output Current vs. Ambient Temperature and Air Velocity
@Vin = 7V, Vout=0.7V (Either Orientation)
12
12
Natural
Convection
10
Natural
Convection
10
8
8
6
6
4
4
2
2
0
0
25
30
35
40
45
50
55
60
65
70
75
80
85
Ambient Temperature (℃)
Figure 52: Output current vs. ambient temperature and air
[email protected]=12V, Vout=2.5V(Either Orientation)
Output Current(A)
25
30
35
40
45
50
55
60
65
70
75
80
85
Ambient Temperature (℃)
Figure 55: Output current vs. ambient temperature and air
[email protected]=7V, Vout=0.7V(Either Orientation)
DCM12S0A0S12 Output Current vs. Ambient Temperature and Air Velocity
@Vin = 12V, Vout=1.8V (Either Orientation)
12
Natural
Convection
10
8
6
4
2
0
25
30
35
40
45
50
55
60
65
70
75
80
85
Ambient Temperature (℃)
Figure 53: Output current vs. ambient temperature and air
[email protected]=12V, Vout=1.8V(Either Orientation)
Output Current(A)
DCM12S0A0S12 Output Current vs. Ambient Temperature and Air Velocity
@Vin = 12V, Vout=1.2V (Either Orientation)
12
Natural
Convection
10
8
6
4
2
0
25
30
35
40
45
50
55
60
65
70
75
80
85
Ambient Temperature (℃)
Figure 54: Output current vs. ambient temperature and air
[email protected]=12V, Vout=1.2V(Either Orientation)
DS_DCM12S0A0S12NFA_10022013
E-mail: [email protected]
http://www.deltaww.com/dcdc
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PICK AND PLACE LOCATION
RECOMMENDED PAD LAYOUT
SURFACE-MOUNT TAPE & REEL
DS_DCM12S0A0S12NFA_10022013
E-mail: [email protected]
http://www.deltaww.com/dcdc
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LEAD (Sn/Pb) PROCESS RECOMMEND TEMP. PROFILE
Note: The temperature refers to the pin of DCM, measured on the pin Vout joint.
LEAD FREE (SAC) PROCESS RECOMMEND TEMP. PROFILE
Temp.
Peak Temp. 240 ~ 245 ℃
220℃
Ramp down
max. 4℃ /sec.
200℃
150℃
Preheat time
90~120 sec.
Time Limited 75 sec.
above 220℃
Ramp up
max. 3℃ /sec.
25℃
Time
Note: The temperature refers to the pin of DCM, measured on the pin Vout joint.
DS_DCM12S0A0S12NFA_10022013
E-mail: [email protected]
http://www.deltaww.com/dcdc
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MECHANICAL DRAWING
DS_DCM12S0A0S12NFA_10022013
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PART NUMBERING SYSTEM
DCM
12
S
0A0
S
12
N
Product
Series
Input
Voltage
Numbers
of Outputs
Output
Voltage
Package
Type
Output
Current
On/Off
logic
DCT - 3A
DCS - 6A
DCM - 12A
DCL - 20A
04 - 2.4~5.5V
12 – 4.5~14V
S - Single
0A0 S - SMD
Programmable
03 - 3A
06 - 6A
12 - 12A
20 - 20A
N- negative
P- positive
F
A
Option Code
F- RoHS 6/6
(Lead Free)
A - Standard Function
MODEL LIST
Model Name
Packaging
Input Voltage
Output Voltage
Output Current
Efficiency
12Vin, 5Vdc @ 12A
DCM12S0A0S12NFA
SMD
4.5V ~ 14Vdc
0.69V~ 5.0Vdc
12A
95.4%
CONTACT: www.deltaww.com/dcdc
USA:
Telephone:
East Coast: 978-656-3993
West Coast: 510-668-5100
Fax: (978) 656 3964
Email: [email protected]
Europe:
Telephone: +31-20-655-0967
Fax: +31-20-655-0999
Email: [email protected]
Asia & the rest of world:
Telephone: +886 3 4526107 x6220~6224
Fax: +886 3 4513485
Email: [email protected]
WARRANTY
Delta offers a two (2) year limited warranty. Complete warranty information is listed on our web site or is available
upon request from Delta.
Information furnished by Delta is believed to be accurate and reliable. However, no responsibility is assumed by
Delta for its use, nor for any infringements of patents or other rights of third parties, which may result from its use.
No license is granted by implication or otherwise under any patent or patent rights of Delta. Delta reserves the right
to revise these specifications at any time, without notice .
DS_DCM12S0A0S12NFA_10022013
E-mail: [email protected]
http://www.deltaww.com/dcdc
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