DCL12S0A0S20NFA FEATURES High efficiency: 93% @ 12Vin, 5V/20A out 92% @ 12Vin, 3.3V/20A out 90% @ 12Vin, 2.5V/20A out 89% @ 12Vin, 1.8V/20A out 83% @ 12Vin, 1.2V/20A out 79% @ 10Vin, 0.69V/20A out Small size and low profile: 33.02x 13.46x 8.5mm (1.3”x 0.53”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 Vdc via external resistor Fixed frequency operation and ablity to Synchronize with external clock 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 Delphi DCL, Non-Isolated Point of Load DC/DC Power Modules: 4.5~14Vin, 0.69V-5V/20Aout The Delphi Series DCL, 4.5-14V input, single output, OPTIONS Negative/Positive on/off logic Vo Tracking feature 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 DCL series provides a programmable output voltage from 0.69 V to 5 V 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 APPLICATIONS Telecom / DataCom Distributed power architectures optimization of component placement, these converters possess Servers and workstations outstanding electrical and thermal performance, as well as LAN / WAN applications extremely high reliability under highly stressful operating Data processing applications surface mount and provides up to 20A of output current in an industry standard footprint. With creative design technology and conditions. DS_DCL12S0A0S20NFA_11152012 E-mail: [email protected] http://www.deltaww.com/dcdc P1 TECHNICAL SPECIFICATIONS PARAMETER NOTES and CONDITIONS DCL12S0A0S20NFA 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 (Io = 0, module enabled) Off Converter Input Current (VIN = 12.0Vdc, module disabled) Inrush Transient Input Reflected Ripple Current, peak-to-peak Vo ≦ Vin –0.6 Max. Units -0.3 -0.3 15 Vin max V V -40 -55 85 125 ℃ ℃ 4.5 14 V 20 V V V A mA mA mA 4.45 4.2 0.25 Vin=4.5V to14V, Io=Io,max Vin= 10V, Vo,set = 0.69 Vdc Vin= 12V, Vo,set = 3.3 Vdc 60 74 3 1 (5Hz to 20MHz, 1μH source impedance; Vin =0 to 14V, Io=Iomax ; 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 Start-Up Time, From On/Off Control Start-Up 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 Typ. 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 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, -1.5 mAp-p 45 dB +1.5 %Vo,set 0.69 Vo,set 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 80 mV 28 mV 20 5 140 2.6 A % Vo,set % Io Adc 380 380 30 mV mV µs 2 2 5 ms ms ms µF 0 Io,s/c 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 A2S 43 94 Vin=12V, 100% Load Vin=12V, 100% Load Vin=12V, 100% Load Vin=12V, 100% Load Vin=12V, 100% Load Vin=10V, 100% Load 1000 93 92 90 89 83 79 % % % % % % 520 500 600 kHz kHz Module On, Von/off Module Off, Von/off Module On, Ion/off Module Off, Ion/off 0 2 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 100 150 32.51 5.5 M hours grams (TA = 25°C, airflow rate = 300 LFM, Vin = 4.5Vdc and 14.0Vdc, nominal Vout unless otherwise noted.) DS_DCL12S0A0S20NFA_11152012 E-mail: [email protected] http://www.deltaww.com/dcdc P2 ELECTRICAL CHARACTERISTICS CURVES Figure 1: Converter efficiency vs. output current (Vout= 0.69V) 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) Figure 6: Converter efficiency vs. output current (5.0V out) DS_DCL12S0A0S20NFA_11152012 E-mail: [email protected] http://www.deltaww.com/dcdc P3 ELECTRICAL CHARACTERISTICS CURVES (CON.) Figure 7: Output ripple & noise at 7Vin, 0.69V/20A out Figure 8: Output ripple & noise at 12Vin, 1.8V/20A out CH1:VOUT, 20mV/div, 1uS/div CH1:VOUT, 20mV/div, 1uS/div Figure 9: Output ripple & noise at 12Vin, 3.3V/20A out Figure 10: Output ripple & noise at 12Vin, 5.0V/20A out CH1:VOUT, 20mV/div, 1uS/div CH1:VOUT, 20mV/div, 1uS/div DS_DCL12S0A0S20NFA_11152012 E-mail: [email protected] http://www.deltaww.com/dcdc P4 ELECTRICAL CHARACTERISTICS CURVES (CON.) Figure 11: Turn on delay time at 7Vin, 0.69V/20A out. Figure 12: Turn on delay time at 12Vin, 1.8V/20A out. (Green : VOUT, 0.5V/div, Yellow: VIN, 2V/div. 2mS/div) (Green : VOUT, 0.5V/div, Yellow: VIN, 5V/div. 2mS/div) (Yellow : VOUT, 0.2V/div, Green: VIN, 5V/div. 2mS/div) Figure 13: Turn on delay time at 12Vin, 3.3V/20A out. Figure 14: Turn on delay time at 12Vin, 5.0V/20A out. (Green : VOUT, 1V/div, Yellow: VIN, 5V/div. 2mS/div) (Green : VOUT, 2V/div, Yellow: VIN, 5V/div. 2mS/div) DS_DCL12S0A0S20NFA_11152012 E-mail: [email protected] http://www.deltaww.com/dcdc P5 ELECTRICAL CHARACTERISTICS CURVES (CON.) Figure 15: Turn on delay time at remote on 7Vin, 0.69V/20A out. Figure16: Turn on delay time at remote on 12Vin, 1.8V/20A out. (Yellow: VOUT, 0.5V/div, Green: ON/OFF, 2V/div, 2mS/div) (Yellow: VOUT, 0.5V/div, Green: ON/OFF, 2V/div, 2mS/div) Figure 17: Turn on delay time at remote on 12Vin, 3.3V/20A out. Figure 18: Turn on delay time at remote on 12Vin, 5.0V/20A out. (Yellow: VOUT, 1V/div, Green: ON/OFF, 2V/div, 2mS/div) (Yellow: VOUT, 2V/div, Green: ON/OFF, 2V/div, 2mS/div) DS_DCL12S0A0S20NFA_11152012 E-mail: [email protected] http://www.deltaww.com/dcdc P6 ELECTRICAL CHARACTERISTICS CURVES Figure 19: Transient response to dynamic load change at Figure 20: Transient response to dynamic load change at 2.5A/μS from 50%~ 100%~50% of Io, max at 7Vin, 0.69Vout 2.5A/μS from 50%~ 100%~50% of Io, max at 12Vin, 1.8Vout (Cout = 1uF ceramic, 47uF*2 +10μFceramic) (Cout = 1uF ceramic, 47uF*2 +10μFceramic) Yellow : VOUT, 0.2V/div, 100uS/div Yellow : VOUT, 0.2V/div, 100uS/div Figure 21: Transient response to dynamic load change at Figure 22: Transient response to dynamic load change at 2.5A/μS from 50%~ 100%~50% of Io, max at 12Vin, 3.3Vout 2.5A/μS from 50%~ 100%~50% of Io, max at 12Vin, 5Vout (Cout = 1uF ceramic, 47uF*2 +10μFceramic) (Cout = 1uF ceramic, 47uF*2 +10μFceramic) Yellow : VOUT, 0.2V/div, 100uS/div Yellow : VOUT, 0.2V/div, 100uS/div DS_DCL12S0A0S20NFA_11152012 E-mail: [email protected] http://www.deltaww.com/dcdc P7 ELECTRICAL CHARACTERISTICS CURVES (CON.) Figure 23: Tracking function, Vtracking=6V, Vout= 5.0V, full load Figure 24:Tracking function, Vtracking=6V, Vout= 5.0V, full load Yellow : VOUT, (1V/div), Green: Tracking, (1V/div), 500uS/div Yellow : VOUT, (1V/div), Green: Tracking, (1V/div), 10mS/div Figure 25: Tracking function, Vtracking=0.8V, Vout=0.69V, full load Figure 26:Tracking function, Vtracking=0.8V, Vout= 0.69V, full load Yellow: VOUT, 0.2V/div, Green : Tracking, 0.2V/div, 1mS/div Yellow: VOUT, 0.2V/div, Green : Tracking, 0.2V/div, 5mS/div DS_DCL12S0A0S20NFA_11152012 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 Figure 27: Input reflected-ripple current test setup For safety-agency approval the power module must be 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. Note: Use a 10μF and 1μF capacitor. Scope measurement should be made using a BNC connector. The input to these units is to be provided with a fast acting fuse with a maximum rating of 30A in the positive input lead. Figure 28: Peak-peak output noise and startup transient measurement test setup. VI Vo GND Figure 29: 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_DCL12S0A0S20NFA_11152012 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 DCL 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 options are available in the DCL series power modules. Over-Current Protection 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 30). 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 DCL provide Vo remote sensing to achieve proper regulation will be On). at the load points and reduce effects of distribution losses on For negative logic module, the On/Off pin is pulled high with an output line. In the event of an open remote sense line, the module external pull-up 5kΩ resistor (see figure 31). Negative logic shall maintain local sense regulation through an internal resistor. On/Off signal turns the module OFF during logic high and turns The module shall correct for a total of 0.5V of loss. The remote the module ON during logic low. If the negative On/Off function 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 30: Positive remote On/Off implementation Distribution Losses Figure 32: Effective circuit configuration for remote sense operation Vo Vin Rpullup I O N /O FF On/Off RL Q1 GND Figure 31: Negative remote On/Off implementation DS_DCL12S0A0S20NFA_11152012 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 The output voltage of the DCL can be programmed to any specified in the electrical specification. voltage between 0.69Vdc and 5.5Vdc by connecting one resistor (shown as Rtrim in Figure 33) between the TRIM and GND pins of the module. Without this external resistor, the output voltage of the module is 0.69 Vdc. To calculate the value of the resistor Rtrim for a particular output voltage Vo, please use the following equation: 6.9 Rtrim K Vo 0.69 Rtrim is the external resistor in kΩ Vo is the desired output voltage. Certain restrictions apply on the output voltage set point For example, to program the output voltage of the DCL module to depending on the input voltage. These are shown in the Output 5.0Vdc, Rtrim is calculated as follows: Voltage vs. Input Voltage Set Point Area plot in Fig. 34. 6.9 Rtrim K 1.601K 5.0 0.69 The Upper Limit curve shows that for output voltages of 0.9V and lower, the input voltage must be lower than the maximum of 14V. The Lower Limit curve shows that for output voltages of 3.3V and higher, the input voltage needs to be larger than the minimum of 4.5V Figure 33: Circuit configulation for programming output voltage using an external resister. Figure 34: Output voltage vs input voltage setpoint area plot showing limits were the output can be set for different.input voltage. DS_DCL12S0A0S20NFA_11152012 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 DCL 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 35 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. 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 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. 37) according to the following equation 24950 R1 Vin 0.05 Figure 35: Circuit configuration for output voltage margining Output Voltage Sequencing The DCL 12V 20A modules include a sequencing feature, EZ-SEQUENCE that enables users to implement various types of output voltage sequencing in their applications. This is Figure 36: Sequential Start-up accomplished via an additional sequencing pin. When not using the sequencing feature, either tie the SEQ pin to VIN or leave it The voltage at the sequencing pin will be 50mV when the unconnected. sequencing signal is at zero. DS_DCL12S0A0S20NFA_11152012 E-mail: [email protected] http://www.deltaww.com/dcdc P12 FEATURE DESCRIPTIONS (CON.) Power Good The DCL modules provide a Power Good (PGOOD) signal After the 10msec delay, an analog voltage is applied to the SEQ that is implemented with an open-drain output to indicate that pin and the output voltage of the module will track this voltage on the output voltage is within the regulation limits of the power a one-to-one volt bases until the output reaches the set-point module. The PGOOD signal will be de-asserted to a low state voltage. To initiate simultaneous shutdown of the modules, the if any condition such as over temperature, over current or loss SEQ pin voltage is lowered in a controlled manner. The output of regulation occurs that would result in the output voltage voltage of the modules tracks the voltages below their set-point going ±10% outside the set point value. The PGOOD terminal voltages on a one-to-one basis. A valid input voltage must be should be connected through a pull up resistor (suggested maintained until the tracking and output voltages reach ground value 100KΩ) to a source of 5VDC or lower. potential. When using the EZ-SEQUENCETM feature to control start-up of the module, pre-bias immunity during startup is disabled. The Monotonic Start-up and Shutdown pre-bias immunity feature of the module relies on the module being in the diode-mode during start-up. When using the The DCL 20A modules have monotonic start-up and shutdown EZ-SEQUENCETM feature, modules goes through an internal behavior for any combination of rated input voltage, output set-up time of 10msec, and will be in synchronous rectification current and operating temperature range. mode when the voltage at the SEQ pin is applied. This will result in the module sinking current if a pre-bias voltage is present at the output of the module. Synchronization The DCL 20A 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 37: Circuit showing connection of the sequencing signal to the SEQ pin. Simultaneous DS_DCL12S0A0S20NFA_11152012 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 P13 THERMAL CONSIDERATIONS Thermal management is an important part of the system design. To ensure proper, reliable operation, sufficient cooling THERMAL CURVES AIRFLOW 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. Figure 39: Temperature measurement location The allowed maximum hot spot temperature is defined at 117℃ Thermal Testing Setup Delta’s DC/DC power modules are characterized in heated vertical wind tunnels that simulate the thermal environments Output Current(A) encountered in most electronics equipment. This type of DCL12S0A0S20NFA Output Current vs. Ambient Temperature and Air Velocity @Vin = 12V, Vo=5.0V (Airflow From Pin10 To Pin8) 20 equipment commonly uses vertically mounted circuit cards in cabinet racks in which the power modules are mounted. Natural Convection 16 100LFM The following figure shows the wind tunnel characterization 12 200LFM setup. The power module is mounted on a test PWB and is vertically positioned within the wind tunnel. 300LFM 8 400LFM Thermal Derating 4 Heat can be removed by increasing airflow over the module. 0 25 To enhance system reliability, the power module should always be operated below the maximum operating temperature. If the temperature exceeds the maximum module 30 35 40 45 50 55 60 65 70 75 80 85 Ambient Temperature (℃) Figure 40: Output current vs. ambient temperature and air velocity@Vin=12V, Vout=5.0V(Either Orientation) temperature, reliability of the unit may be affected. Output Current(A) PWB FANCING PWB DCL12S0A0S20NFA Output Current vs. Ambient Temperature and Air Velocity @Vin = 12V, Vo=3.3V (Airflow From Pin10 To Pin8) 20 MODULE Natural Convection 16 100LFM 200LFM 12 300LFM 50.8(2.00") AIR VELOCITY AND AMBIENT TEMPERATURE SURED BELOW THE MODULE 400LFM 8 4 AIR FLOW 0 25 Note: Wind Tunnel Test Setup Figure Dimensions are in millimeters and (Inches) 30 35 40 45 50 55 60 65 70 75 80 85 Ambient Temperature (℃) Figure 41: Output current vs. ambient temperature and air velocity@Vin=12V, Vout=3.3V(Either Orientation) Figure 38: Wind tunnel test setup DS_DCL12S0A0S20NFA_11152012 E-mail: [email protected] http://www.deltaww.com/dcdc P14 THERMAL CURVES Output Current(A) THERMAL CURVES DCL12S0A0S20NFA Output Current vs. Ambient Temperature and Air Velocity @Vin = 12V, Vo=2.5V (Airflow From Pin10 To Pin8) 20 Output Current(A) DCL12S0A0S20NFA Output Current vs. Ambient Temperature and Air Velocity @Vin = 7V, Vo=0.69V (Airflow From Pin10 To Pin8) 20 Natural Convection Natural Convection 16 16 100LFM 100LFM 12 12 200LFM 300LFM 8 8 400LFM 4 4 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=2.5V(Either Orientation) Output Current(A) 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=7V, Vout=0.69V(Either Orientation) DCL12S0A0S20NFA Output Current vs. Ambient Temperature and Air Velocity @Vin = 12V, Vo=1.8V (Airflow From Pin10 To Pin8) 20 16 Natural Convection 12 100LFM 200LFM 300LFM 8 4 0 25 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=1.8V(Either Orientation) Output Current(A) DCL12S0A0S20NFA Output Current vs. Ambient Temperature and Air Velocity @Vin = 12V, Vo=1.2V (Airflow From Pin10 To Pin8) 20 Natural Convection 16 100LFM 12 200LFM 8 4 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=1.2V(Either Orientation) DS_DCL12S0A0S20NFA_11152012 E-mail: [email protected] http://www.deltaww.com/dcdc P15 PICK AND PLACE LOCATION RECOMMENDED PAD LAYOUT SURFACE-MOUNT TAPE & REEL DS_DCL12S0A0S20NFA_11152012 E-mail: [email protected] http://www.deltaww.com/dcdc P16 LEAD (Sn/Pb) PROCESS RECOMMEND TEMP. PROFILE Note: The temperature refers to the pin of DCL, 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 DCL, measured on the pin Vout joint.. DS_DCL12S0A0S20NFA_11152012 E-mail: [email protected] http://www.deltaww.com/dcdc P17 MECHANICAL DRAWING DS_DCL12S0A0S20NFA_11152012 E-mail: [email protected] http://www.deltaww.com/dcdc P18 PART NUMBERING SYSTEM DCL 12 S 0A0 S 20 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 F N- negative P- positive 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 @ 20A DCL12S0A0S20NFA SMD 4.5V ~ 14Vdc 0.69V~ 5.0Vdc 20A 93.0% 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_DCL12S0A0S20NFA_11152012 E-mail: [email protected] http://www.deltaww.com/dcdc P19