DCM12S0A0S12NFA FEATURES 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 E-mail: [email protected] 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 E-mail: [email protected] http://www.deltaww.com/dcdc 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 E-mail: [email protected] http://www.deltaww.com/dcdc 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 E-mail: [email protected] http://www.deltaww.com/dcdc 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 E-mail: [email protected] http://www.deltaww.com/dcdc 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 E-mail: [email protected] http://www.deltaww.com/dcdc 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 E-mail: [email protected] http://www.deltaww.com/dcdc 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 DS_DCM12S0A0S12NFA_10022013 E-mail: [email protected] http://www.deltaww.com/dcdc 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 DS_DCM12S0A0S12NFA_10022013 E-mail: [email protected] http://www.deltaww.com/dcdc 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 DS_DCM12S0A0S12NFA_10022013 E-mail: [email protected] http://www.deltaww.com/dcdc 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. DS_DCM12S0A0S12NFA_10022013 E-mail: [email protected] http://www.deltaww.com/dcdc 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. DS_DCM12S0A0S12NFA_10022013 E-mail: [email protected] http://www.deltaww.com/dcdc 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 E-mail: [email protected] http://www.deltaww.com/dcdc 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 velocity@Vin=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 velocity@Vin=12V, Vout=3.3V(Either Orientation) E-mail: [email protected] http://www.deltaww.com/dcdc P15 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 velocity@Vin=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 velocity@Vin=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 velocity@Vin=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 velocity@Vin=12V, Vout=1.2V(Either Orientation) DS_DCM12S0A0S12NFA_10022013 E-mail: [email protected] http://www.deltaww.com/dcdc P16 PICK AND PLACE LOCATION RECOMMENDED PAD LAYOUT SURFACE-MOUNT TAPE & REEL DS_DCM12S0A0S12NFA_10022013 E-mail: [email protected] http://www.deltaww.com/dcdc P17 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 P18 MECHANICAL DRAWING DS_DCM12S0A0S12NFA_10022013 E-mail: [email protected] http://www.deltaww.com/dcdc P19 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 P20