DCK12S0A0S30NFA FEATURES High efficiency: 92.8% @ 12Vin, 3.3V/30A out 89.5% @ 12Vin, 1.8V/30A out 85.5% @ 12Vin, 1.2V/30A out 80.5% @ 12Vin, 0.8V/30A out Small size and low profile: 33.0mm x 13.5mm x 10.0mm Surface mount packaging Standard footprint Voltage and resistor-based trim Pre-bias startup Output voltage tracking No minimum load required Output voltage programmable from 0.8Vdc to 3.3 Vdc via external resistor Fixed frequency operation Input UVLO, Output OCP Remote on/off Remote sense Option- Parallel operation 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 Delphi DCL, Non-Isolated Point of Load DC/DC Power Modules: 6~14Vin, 0.8V-3.3V/30Aout The Delphi Series DCK, 6-14V input, single output, non-isolated Point OPTIONS Negative/Positive on/off logic Vo Tracking feature of Load DC/DC converters are the latest offering from a world leader in power systems technology and manufacturing -- Delta Electronics, Inc. The DCK series provides a programmable output voltage from 0.8 V to 3.3 V using an external resistor and has flexible and programmable tracking features to enable a variety of startup voltages as well as APPLICATIONS Telecom / DataCom surface mount and provides up to 30A of output current in an industry Distributed power architectures standard footprint. With creative design technology and optimization of Servers and workstations component placement, these converters possess outstanding electrical LAN / WAN applications and thermal performance, as well as extremely high reliability under Data processing applications tracking between power modules. This product family is available in highly stressful operating conditions. DATASHEET DS_DCK12S0A0S30NFA_03312016 E-mail: [email protected] http://www.deltaww.com/dcdc P1 TECHNICAL SPECIFICATIONS (TA = 25°C, airflow rate = 300 LFM, Vin = 6Vdc and 14.0Vdc, nominal Vout unless otherwise noted.) PARAMETER NOTES and CONDITIONS DCK12S0A0S30NFA Min. ABSOLUTE MAXIMUM RATINGS Input Voltage (Continuous) Sequencing Voltage Operating Ambient Temperature Storage Temperature INPUT CHARACTERISTICS Operating Input Voltage 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 (Io = 0, module enabled) Off Converter Input Current Inrush Transient Input Reflected Ripple Current, peak-to-peak Output Voltage is 0.8V~2.0V Output Voltage is 2.0V~3.3V Max. Units -0.3 -0.3 15 Vin max V V -40 -55 85 125 ℃ ℃ 14 14 V 6 10 Typ. 12 12 5.4 5.0 0.4 Vin=6V to14V, Io=Io,max Vin= 12V, Vo,set = 0.8 Vdc Vin= 12V, Vo,set = 3.3 Vdc (VIN = 12.0Vdc, module disabled) 180 280 19 (5Hz to 20MHz, 1μH source impedance; Vin = 0 to 14V, Io=Iomax ; 100 30 1 V V V A mA mA mA A2S mAp-p 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 DYNAMIC CHARACTERISTICS Dynamic Load Response Positive Step Change in Output Current Negative Step Change in Output Current Settling Time(within 1.5%Vout normal) Turn-On Transient Start-Up Time, From On/Off Control Start-Up Time, From Input Output Voltage Rise Time Output Capacitive Load EFFICIENCY Vo=3.3V Vo=1.8V Vo=1.2V Vo=0.8V FEATURE CHARACTERISTICS Switching Frequency ON/OFF Control, (Logic High, Module off) Input High Current Input High Voltage ON/OFF Control, (Logic Low, Module on) Input Low Current Input Low Voltage Tracking Slew Rate Capability Tracking Delay Time Tracking Accuracy Forced Load Share Accuracy Number of units in Parallel GENERAL SPECIFICATIONS MTBF Weight DS_DCK12S0A0S30NFA_03312016 with 0.5% tolerance for external resistor used to set output voltage) (selected by an external resistor) -1.5 +1.5 %Vo,set 0.8 Vo,set 3.3 V -2.5 +/-10 +/-10 1 +2.5 mV mV %Vo,set %Vo,set Vo,set 0.5 Over sample load, line and temperature 5Hz to 20MHz bandwidth Vin= Vin nominal, Io=Io,min to Io,max, Co= 1µF+10uF ceramic, Vin= Vin nominal, Io=Io,min to Io,max, Co= 1µF+10uF ceramic, 75 mV 25 mV 30 5 200 A % Vo,set % Io 300 300 50 mV mV µs 2 2 1 ms ms ms µF 0 10µF Tan & 1µF Ceramic load cap, 2.5A/µs 50% Io, max to 100% Io, max 100% Io, max to 50% 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 1000 Vin=12V, 100% Load Vin=12V, 100% Load Vin=12V, 100% Load Vin=12V, 100% Load 92.8 89.5 85.5 80.5 % % % % 370 kHz 3 -0.3 Delay from Vin.min to application of tracking voltage Power-up 2V/mS Power-down 1V/mS *Option for code B (current sharing) *Option for code B (current sharing) 10 Io=80% of Io, max; Ta=25°C 2 - 100 200 10 300 Vin,max uA V 20 0.7 0.5 uA V V/msec ms mV mV % Io unit 200 400 2 M hours 6.9 grams E-mail: [email protected] http://www.deltaww.com/dcdc P2 ELECTRICAL CHARACTERISTICS CURVES Figure 1: Converter efficiency vs. output current (Vout= 0.8V) Figure 2: Converter efficiency vs. output current (1.2V out) Figure 3: Converter efficiency vs. output current (1.8V out) Figure 4: Converter efficiency vs. output current (2.5V out) Figure 5: Converter efficiency vs. output current 3.3V out) DS_DCK12S0A0S30NFA_03312016 E-mail: [email protected] http://www.deltaww.com/dcdc P3 ELECTRICAL CHARACTERISTICS CURVES (CON.) Figure 6: Output ripple & noise at 12Vin, 0.8V/30A out CH1:VOUT, 20mV/div, 2uS/div Figure 7: Output ripple & noise at 12Vin, 1.2V/30A out CH1:VOUT, 20mV/div, 2uS/div Figure 8: Output ripple & noise at 12Vin, 1.8V/30A out CH1:VOUT, 20mV/div, 2uS/div Figure 9: Output ripple & noise at 12Vin, 2.5V/30A out CH1:VOUT, 20mV/div, 2uS/div Figure 10: Output ripple & noise at 12Vin, 3.3V/30A out CH1:VOUT, 20mV/div, 2uS/div DS_DCK12S0A0S30NFA_03312016 E-mail: [email protected] http://www.deltaww.com/dcdc P4 ELECTRICAL CHARACTERISTICS CURVES (CON.) Figure 11: Turn on delay time at 12Vin, 0.8V/30A out. (Green : VOUT, 0.5V/div, Yellow: VIN, 5V/div. 1mS/div) Figure 12: Turn on delay time at 12Vin, 1.2V/30A out. (Green : VOUT, 0.5V/div, Yellow: VIN, 5V/div. 1mS/div) Figure 13: Turn on delay time at 12Vin, 1.8V/30A out. (Green : VOUT, 0.5V/div, Yellow: VIN, 5V/div. 1mS/div) Figure 14: Turn on delay time at 12Vin, 2.5V/30A out. (Green : VOUT, 0.5V/div, Yellow: VIN, 5V/div. 1mS/div) (Yellow : VOUT, 0.2V/div, Green: VIN, 5V/div. 2mS/div) Figure 15: Turn on delay time at 12Vin, 3.3V/30A out. (Green : VOUT, 1V/div, Yellow: VIN, 5V/div. 2mS/div) DS_DCK12S0A0S30NFA_03312016 E-mail: [email protected] http://www.deltaww.com/dcdc P5 ELECTRICAL CHARACTERISTICS CURVES (CON.) Figure 16: Turn on delay time at remote on 12Vin, 0.8V/30A out. (Green: VOUT, 0.5V/div, Yellow: ON/OFF, 2V/div, 1mS/div) Figure17: Turn on delay time at remote on 12Vin, 1.2V/30A out. (Green: VOUT, 0.5V/div, Yellow: ON/OFF, 2V/div, 1mS/div) Figure 18: Turn on delay time at remote on 12Vin, 1.8V/30A out. (Green: VOUT, 0.5V/div, Yellow: ON/OFF, 2V/div, 1mS/div) Figure 19: Turn on delay time at remote on 12Vin, 2.5V/30A out. (Green: VOUT, 1V/div, Yellow: ON/OFF, 2V/div, 1mS/div) Figure 20: Turn on delay time at remote on 12Vin, 3.3V/30A out. (Green: VOUT, 1V/div, Yellow: ON/OFF, 2V/div, 1mS/div) DS_DCK12S0A0S30NFA_03312016 E-mail: [email protected] http://www.deltaww.com/dcdc P6 ELECTRICAL CHARACTERISTICS CURVES Figure 21: Transient response to dynamic load change at 2.5A/μS from 50%~ 100%~50% of Io, max at 12Vin, 0.8Vout (Cout = 1uF ceramic, 47uF*2 +10μF ceramic) Yellow : VOUT, 0.2V/div, 100uS/div Figure 22: Transient response to dynamic load change at 2.5A/μS from 50%~ 100%~50% of Io, max at 12Vin, 1.2Vout (Cout = 1uF ceramic, 47uF*2 +10μF ceramic) Yellow : VOUT, 0.2V/div, 100uS/div Figure 23: Transient response to dynamic load change at 2.5A/μS from 50%~ 100%~50% of Io, max at 12Vin, 1.8Vout (Cout = 1uF ceramic, 47uF*2 +10μF ceramic) Yellow : VOUT, 0.1V/div, 100uS/div Figure 24: Transient response to dynamic load change at 2.5A/μS from 50%~ 100%~50% of Io, max at 12Vin, 2.5Vout (Cout = 1uF ceramic, 47uF*2 +10μF ceramic) Yellow : VOUT, 0.1V/div, 100uS/div Figure 25: Transient response to dynamic load change at 2.5A/μS from 50%~ 100%~50% of Io, max at 12Vin, 3.3Vout (Cout = 1uF ceramic, 47uF*2 +10μF ceramic) Yellow : VOUT, 0.1V/div, 100uS/div DS_DCK12S0A0S30NFA_03312016 E-mail: [email protected] http://www.deltaww.com/dcdc P7 ELECTRICAL CHARACTERISTICS CURVES (CON.) Figure 26:Tracking function, Vtracking=1V, Vout= 0.8V, full load Yellow : VOUT, (0.2V/div), Green: Tracking, (0.2V/div), 2mS/div Figure 27:Tracking function, Vtracking=1V, Vout= 0.8V, full load Yellow : VOUT, (0.2V/div), Green: Tracking, (0.2V/div), 20mS/div Figure 28:Tracking function, Vtracking=4V, Vout= 3.3V, full load Yellow: VOUT, 1V/div, Green : Tracking, 1V/div, 20mS/div Figure 29:Tracking function, Vtracking=4V, Vout= 3.3V, full load Yellow: VOUT, 1V/div, Green : Tracking, 1V/div, 20mS/div DS_DCK12S0A0S30NFA_03312016 E-mail: [email protected] http://www.deltaww.com/dcdc P8 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. Safety Considerations For safety-agency approval the power module must be Figure 30: Input reflected-ripple current test setup installed in compliance with the spacing and separation requirements of the end-use safety agency standards. For the converter output to be considered meeting the requirements of safety extra-low voltage (SELV), the input must meet SELV requirements. The power module has extra-low voltage (ELV) outputs when all inputs are ELV. The input to these units is to be provided with a fast acting fuse Note: Use a 10μF and 1μF capacitor. Scope measurement should be made using a BNC connector. with a maximum rating of 30A in the positive input lead. Figure 31: Peak-peak output noise and startup transient measurement test setup. CONTACT AND DISTRIBUTION LOSSES VI Vo II Io LOAD SUPPLY GND CONTACT RESISTANCE Figure 32: 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_DCK12S0A0S30NFA_03312016 E-mail: [email protected] http://www.deltaww.com/dcdc P9 FEATURES DESCRIPTIONS Input Under voltage Lockout At input voltages below the input under voltage lockout limit, the Remote On/Off module operation is disabled. The module will begin to operate at The DCK series power modules have an On/Off pin for remote an input voltage above the under voltage lockout turn-on threshold. On/Off operation. Both positive and negative On/Off logic Over-Current Protection options are available in the DCK series power modules. To provide protection in an output over load fault condition, the unit For positive logic module, connect an open collector (NPN) transistor or open drain (N channel) MOSFET between the On/Off pin and the GND pin (see figure 33). Positive logic On/Off is equipped with internal over-current protection. When the over-current protection is triggered, the unit enters hiccup mode. The units operate normally once the fault condition is removed. signal turns the module ON during the logic high and turns the module OFF during the logic low. When the positive On/Off Remote Sense function is not used, leave the pin floating or tie to Vin (module The DCK series provide Vo remote sensing to achieve proper will be On). regulation at the load points and reduce effects of distribution For negative logic module, the On/Off pin is pulled high with an losses on output line. In the event of an open remote sense line, external pull-up 5kΩ resistor (see figure 34). Negative logic the module shall maintain local sense regulation through an On/Off signal turns the module OFF during logic high and turns internal resistor. The module shall correct for a total of 0.5V of loss. the module ON during logic low. If the negative On/Off function The remote sense line impedance shall be < 10. is not used, leave the pin floating or tie to GND. (module will be Distribution Losses on) Vo Vin Vo V in Distribution Losses Sense RL I O N /O F F O n/O ff RL Q1 GND GND Distribution Losses Figure 33: Positive remote On/Off implementation Distribution Losses Figure 35: Effective circuit configuration for remote sense operation Vo V in R pullup I O N /O FF O n/O ff RL Q1 GND Figure 34: Negative remote On/Off implementation DS_DCK12S0A0S30NFA_03312016 E-mail: [email protected] http://www.deltaww.com/dcdc P10 FEATURES DESCRIPTIONS (CON.) Table 1 provides Rtrim values required for some common output voltages. By using a ±0.5% tolerance trim resistor with a Output Voltage Programming TC of ±100ppm, a set point tolerance of ±1.5% can be achieved as specified in the electrical specification. The output voltage of the DCK can be programmed to any voltage between 0.8Vdc and 3.3Vdc by connecting one resistor (shown as Rtrim in Figure 36) between the TRIM and GND pins of the module. Without this external resistor, the output voltage of the module is 0.8 Vdc. To calculate the value of the resistor Rtrim for a particular output voltage Vo, please use the following equation: 8000 Rtrim Vo 0.8 Rtrim is the external resistor in Ω Vo is the desired output voltage. For example, to program the output voltage of the DCK module to 3.3Vdc, Rtrim is calculated as follows: 8000 Rtrim 3,200 3.3 0.8 Figure 36: Circuit configulation for programming output voltage using an external resister. DS_DCK12S0A0S30NFA_03312016 E-mail: [email protected] http://www.deltaww.com/dcdc P11 FEATURE DESCRIPTIONS (CON.) Voltage Margining When an analog voltage is applied to the SEQ pin, the output voltage tracks this voltage until the output reaches the set-point voltage. The final value of the SEQ voltage must be Output voltage margining can be implemented in the DCK set higher than the set-point voltage of the module. The output modules by connecting a resistor, R margin-up, from the Trim pin voltage follows the voltage on the SEQ pin on a one-to-one to the ground pin for margining-up the output voltage and by basis. By connecting multiple modules together, multiple connecting a resistor, Rmargin-down, from the Trim pin to the modules can track their output voltages to the voltage applied output pin for margining-down. Figure 37 shows the circuit on the SEQ pin. configuration for output voltage margining. If unused, leave the For proper voltage sequencing, first, input voltage is applied to trim pin unconnected. A calculation tool is available from the the module. The On/Off pin of the module is left unconnected evaluation procedure which computes the values of Rmargin-up (or tied to GND for negative logic modules or tied to VIN for and Rmargin-down for a specific output voltage and margin positive logic modules) so that the module is ON by default. percentage. After applying input voltage to the module, a minimum 10msec delay is required before applying voltage on the SEQ pin. This delay gives the module enough time to complete its internal power-up 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. 39) according to the following equation 24950 R1 Vin 0.05 Figure 37: Circuit configuration for output voltage margining Output Voltage Sequencing The DCK 12V 30A modules include a sequencing feature 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 Figure 38: Sequential Start-up feature, either tie the SEQ pin to VIN or leave it unconnected. The voltage at the sequencing pin will be 50mV when the sequencing signal is at zero. DS_DCK12S0A0S30NFA_03312016 E-mail: [email protected] http://www.deltaww.com/dcdc P12 FEATURE DESCRIPTIONS (CON.) Monotonic Start-up and Shutdown After the 10msec delay, an analog voltage is applied to the SEQ The DCK 30A modules have monotonic start-up and shutdown pin and the output voltage of the module will track this voltage on behavior for any combination of rated input voltage, output a one-to-one volt bases until the output reaches the set-point current and operating temperature range. voltage. To initiate simultaneous shutdomwn of the odules, the SEQ pin voltage is lowered in a controlled manner. The output Active Load Sharing (-P Option) voltage of the modules tracks the voltages below their set-point For additional power requirements, The DCK 12V 30A voltages on a one-to-one basis. A valid input voltage must be modules is also available with a parallel option. Up to two maintained until the tracking and output voltages reach ground modules can be configured, in parallel, with active load potential. sharing. When using the sequencing feature to control start-up of the Good layout techniques should be observed when using module, pre-bias immunity during startup is disabled. The multiple units in parallel. To implement forced load sharing, the pre-bias immunity feature of the module relies on the module following connections should be made: being in the diode-mode during start-up. When using the • The share pins of all units in parallel must be connected sequencing feature, modules goes through an internal set-up together. The path of these connections should be as direct as time of 10msec, and will be in synchronous rectification mode possible. when the voltage at the SEQ pin is applied. This will result in the • All remote-sense pins should be connected to the power module sinking current if a pre-bias voltage is present at the bus at the same point, i.e., connect all the SENSE(+) pins to output of the module. the (+) side of the bus. Close proximity and directness are necessary for good noise immunity Some special considerations apply for design of converters in parallel operation: • When sizing the number of modules required for parallel operation, take note of the fact that current sharing has some tolerance. In addition, under transient condtions such as a dynamic load change and during startup, all converter output currents will not be equal. To allow for such variation and avoid the likelihood of a converter shutting off due to a current overload,we suggest that the total capacity of the paralleled system should be no more than 50% of the sum of the Figure 39: Circuit showing connection of the sequencing signal individual converters during startup. And we suggest the to the SEQ pin. total capacity of the paralleled system should be no more than 90% of the sum of the individual converters after startup. As an example, for a system of two DCK 30A modules in parallel, the total current drawn should be less than 30A during startup.And the total current drawn should be less than 54A Simultaneous DS_DCK12S0A0S30NFA_03312016 Simultaneous tracking (Figure 41) is implemented by using the TRACK pin. The objective is to minimize the voltage difference between the power supply outputs after startup. E-mail: [email protected] http://www.deltaww.com/dcdc P13 • All modules should be turned on and off together. This is so that all modules come up at the same time avoiding the problem of one converter sourcing current into the other leading to an overcurrent trip condition. To ensure that all modules come up simultaneously, the on/off pins of all paralleled converters should be tied together and the converters enabled and disabled using the on/off pin. • The share bus is not designed for redundant operation and the system will be non-functional upon failure of one of the unit when multiple units are in parallel. In particular, if one of the converters shuts down during operation, the other converters may also shut down due to their outputs hitting current limit. In such a situation, unless a coordinated restart is ensured, the system may never properly restart since different converters will try to restart at different times causing an overload condition and subsequent shutdown. This situation can be avoided by having an external output voltage monitor circuit that detects a shutdown condition and forces all converters to shut down and restart together. • When not using the active load sharing feature, share pins should be left unconnected. DS_DCK12S0A0S30NFA_03312016 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 AIRFLOW 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 41: Temperature measurement location The allowed maximum hot spot temperature is defined at 110℃ Output Current(A) The following figure 40 shows the wind tunnel characterization DCK12S0A0S30NFA Output Current vs. Ambient Temperature and Air Velocity @Vin = 12V, Vout=0.8V (Airflow From Pin2 To Pin3) 30 setup. The power module is mounted on a test PWB and is Natural Convection 25 vertically positioned within the wind tunnel. 100LFM 20 200LFM Thermal Derating 15 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 10 5 temperature. If the temperature exceeds the maximum module temperature, reliability of the unit may be affected. PWB FANCING PWB 0 25 30 35 40 45 50 55 60 65 70 75 80 85 Ambient Temperature (℃) Figure 42: Output current vs. ambient temperature and air velocity@Vin=12V, Vout=0.8V(Airflow direction refer to figure 41) MODULE Output Current(A) DCK12S0A0S30NFA Output Current vs. Ambient Temperature and Air Velocity @Vin = 12V, Vout=1.2V (Airflow From Pin2 To Pin3) 30 Natural Convection 25 AIR VELOCITY AND AMBIENT TEMPERATURE SURED BELOW THE MODULE 20 50.8(2.00") 100LFM AIR FLOW 15 200LFM 10 5 Note: Wind Tunnel Test Setup Figure Dimensions are in millimeters and (Inches) 0 25 Figure 40: Wind tunnel test setup DS_DCK12S0A0S30NFA_03312016 30 35 40 45 50 55 60 65 70 75 80 85 Ambient Temperature (℃) Figure 43: Output current vs. ambient temperature and air velocity@Vin=12V, Vout=1.2V(Airflow direction refer to figure 41) E-mail: [email protected] http://www.deltaww.com/dcdc P15 THERMAL CURVES Output Current(A) DCK12S0A0S30NFA Output Current vs. Ambient Temperature and Air Velocity @Vin = 12V, Vout=1.8V (Airflow From Pin2 To Pin3) 30 25 Natural Convection 20 100LFM 15 200LFM 10 300LFM 400LFM 5 0 25 30 35 40 45 50 55 60 65 70 75 80 85 Ambient Temperature (℃) Figure 44: Output current vs. ambient temperature and air velocity@Vin=12V, Vout=1.8V(Airflow direction refer to figure 41) Output Current(A) DCK12S0A0S30NFA Output Current vs. Ambient Temperature and Air Velocity @Vin = 12V, Vout=2.5V (Airflow From Pin2To Pin3) 30 25 Natural Convection 100LFM 20 200LFM 15 300LFM 400LFM 10 500LFM 600LFM 5 0 25 30 35 40 45 50 55 60 65 70 75 80 85 Ambient Temperature (℃) Figure 45: Output current vs. ambient temperature and air velocity@Vin=12V, Vout=2.5V(Airflow direction refer to figure 41) Output Current(A) DCK12S0A0S30NFA Output Current vs. Ambient Temperature and Air Velocity @Vin = 12V, Vout=3.3V (Airflow From Pin2 To Pin3) 30 Natural Convection 25 100LFM 20 200LFM 300LFM 15 400LFM 10 500LFM 600LFM 5 0 25 30 35 40 45 50 55 60 65 70 75 80 85 Ambient Temperature (℃) Figure 46: Output current vs. ambient temperature and air velocity@Vin=12V, Vout=3.3V(Airflow direction refer to figure 41) DS_DCK12S0A0S30NFA_03312016 E-mail: [email protected] http://www.deltaww.com/dcdc P16 PICK AND PLACE LOCATION RECOMMENDED PAD LAYOUT SURFACE-MOUNT TAPE & REEL DS_DCK12S0A0S30NFA_03312016 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 DCK, 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 DCK, measured on the pin Vout joint. DS_DCK12S0A0S30NFA_03312016 E-mail: [email protected] http://www.deltaww.com/dcdc P18 MECHANICAL DRAWING All pins are copper alloy with matte-tin(Pb free) plated over Nickel underplating. DS_DCK12S0A0S30NFA_03312016 E-mail: [email protected] http://www.deltaww.com/dcdc P19 PART NUMBERING SYSTEM DCK 12 S 0A0 S 30 N F Product Series Input Voltage Numbers of Outputs Output Voltage Package Type Output Current On/Off logic DCK – 30A 12 – 6V~14V S - Single 0A0 Programmabl e S - SMD 30 – 30A N- negative P- positive A Option Code F- RoHS 6/6 (Lead Free) A = extra ground pin, without current sharing (without pin9) C = extra ground pin, without current sharing (without pin9) D = extra ground pin, with current sharing(with all pins) MODEL LIST Model Name Packaging Input Voltage Output Voltage Output Current Efficiency 12Vin, 3.3Vdc @ 30A DCK12S0A0S30NFA SMD 6V ~ 14Vdc 0.8V~ 3.3Vdc 30A 92.8% CONTACT: www.deltaww.com/dcdc Email: [email protected] USA: Telephone: East Coast: 978-656-3993 West Coast: 510-668-5100 Fax: (978) 656 3964 Europe: Telephone: +31-20-655-0967 Fax: +31-20-655-0999 Asia & the rest of world: Telephone: +886 3 4526107 x6220~6224 Fax: +886 3 4513485 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_DCK12S0A0S30NFA_03312016 E-mail: [email protected] http://www.deltaww.com/dcdc P20