FEATURES High efficiency : 91.5% @ 12Vin, 1.8V/40A out Small size and low profile: 1.00” x 0.62” x 0.50” (25.4mm x 15.7mm x 12.7mm) Surface mount No minimum load required Input: UVLO, Output OCP/SCP, OVP, OTP Parallel Units ISO 9000, TL 9000, ISO 14001 certified manufacturing facility UL/cUL 60950-1 (US & Canada) Recognized. D12S72, Non-Isolated, Power Block DC/DC Power Modules: 7.0~13.2Vin, 0.8V~1.8V/40Aout The Delphi D12S72, surface mounted, power block is the latest offering from a world leader in power systems technology and manufacturing — Delta Electronics, Inc. The D12S72 is the latest offering in the DXP30 family which was developed to address the ever-growing demands of increased current and power densities in networking applications while providing maximum flexibility for system configuration, its benefits can easily be applied to other applications transcending various market segments. The DXP family, containing all necessary power components and boasting of a USABLE 2 (55˚C, 200LFM) current density of 64.5A/in and a power density of up to 3 232W/in , is a building block for a new open Digital Power Architecture developed to work with either digital or analog controllers. Measured at 0.62”Wx1.00”Lx0.50”H and rated at 40A of output current, the D12S72 is designed to operate with an input voltage from 7V to 13.2V and provide an output voltage adjustable from 0.8V to 1.8V in digitally defined step resolution of 1.62mV. Multiple D12S72 can be used in parallel to serve applications where output currents are in excess of 40A with limitation imposed only by the control circuit, analog or digital. Designed for superior price/performance, the D12S72 can provide 1.8V and 40A full load in ambient temperature up to 55˚C with 200LFM airflow. APPLICATIONS Telecom / DataCom Distributed power architectures Servers and workstations LAN / WAN applications Data processing applications DATASHEET DS_D12S72C_03182011 Delta Electronics, Inc. TECHNICAL SPECIFICATIONS TA = 25°C, airflow rate = 200 LFM, Vin = 12Vdc, nominal Vout unless otherwise noted. PARAMETER NOTES and CONDITIONS D12S72 Min. ABSOLUTE MAXIMUM RATINGS Input Voltage (Continuous) Operating Temperature Storage Temperature Gate Voltage INPUT CHARACTERISTICS Operating Input Voltage Maximum Input Current PWM PWMH, PWML logic low PWMH, PWML logic high Gate Voltage OUTPUT CHARACTERISTICS Output Voltage Adjustable Range Total Output Voltage Regulation Output Voltage Ripple and Noise Output Voltage Overshoot Output Current Range Transient Response Positive Step Change in Output Current Negative Step Change in Output Current Setting Time to 10% of Peak Devitation Temperature sense EFFICIENCY Refer to Figure 21 for the measuring point Vin=7V, Vout=1.8V, Iout=40A Pin 4 and 5 PWMH or PWML PWMH or PWML Pin 3 (reference to ground), 6.4V recommended operating voltage Total Regulation over load, line and temperature 6x 560µF OSCON and 388µF ceramic capacitor, BW=20MHz @ turn on Typ. Max. Units 0 0 -40 0 15 113 125 7 Vdc °C °C Vdc 7.0 13.2 11.4 5.5 2 5.5 7 V A V V V Vdc 1.8 +1 Vdc %V mVpp % A 4.5 0 3 4.5 5.0 0.8 -1 1.0 3.5 6.4 20 0.5 0 40 6x 560µF OSCON and 388µF ceramic capacitor, 10A/µs, 1.8Vout 75% Io,max to 100% Io,max 100% Io,max to 75% Io,max FEATURE CHARACTERISTICS Operating Frequency GENERAL SPECIFICATIONS MTBF Weight 25°C, 100µA bias current 20 0.6 mV mV µs V Vin=7V, Vo=1.8V, Io=40A Vin=12V, Vo=1.8V, Io=40A Vin=13.2V, Vo=1.8V, Io=40A 92.0 91.5 91.0 % % % 400 kHz 25.18 9.8 M hours grams Vo=1.8V, Io=32A, Ta=25℃,400LFM 100 100 VGATE VIN L PWMH PWML GND GND TEMP+ TEMPCS+ CS- Block diagram of D12S72C 2 ELECTRICAL CHARACTERISTICS CURVES Figure 1: Converter Efficiency vs. Output Current (1V output voltage) Figure 2: Converter Efficiency vs. Output Current (1.8V output voltage) Figure 3: Output Ripple & Noise at 7Vin, 1.8V/40A out, 20mV/div 2uS/div Figure 4: Output Ripple & Noise at 12Vin, 1.8V/40A out, 20mV/div 2uS/div Figure 5: Output Ripple & Noise at 13.2Vin, 1.8V/40A out, 20mV/div 2uS/div Figure 6: Typical transient response to step load change at 10A/µS from 75% to 100% of Io, 7Vin, 1.8V out Top: 20mV/div 5uS/div, Bottom: 5A/div 5uS/div 3 Figure 7: Typical transient response to step load change at 10A/µS from 100% to 75% of Io, 7Vin, 1.8V out Top: 20mV/div 5uS/div, Bottom: 5A/div 5uS/div Figure 8: Typical transient response to step load change at 10A/µS from 75% to 100% of Io, 12Vin, 1.8V out Top: 20mV/div 5uS/div, Bottom: 5A/div 5uS/div Figure 9: Typical transient response to step load change at 10A/µS from 100% to 75% of Io, 12Vin, 1.8V out Top: 20mV/div 5uS/div, Bottom: 5A/div 5uS/div Figure 10: Typical transient response to step load change at 10A/µS from 75% to 100% of Io, 13.2Vin, 1.8V out Top: 20mV/div 5uS/div, Bottom: 5A/div 5uS/div Figure 11: Typical transient response to step load change at 10A/µS from 100% to 75% of Io, 13.2Vin, 1.8V out Top:20mV/div 5uS/div, Bottom:5A/div 5uS/div Figure 12: Turn on waveform at 7vin, 1.8V/40A out 1V/div 2ms/div 4 ELECTRICAL CHARACTERISTICS CURVES Figure 13: Turn on waveform at 7vin, 1.8V/40A out 1V/div 2ms/div Figure 14: Turn on waveform at 7vin, 1.8V/40A out 1V/div 2ms/div Figure 15: Turn off waveform at 7vin, 1.8V/40A out 1V/div 2ms/div Figure 16: Turn off waveform at 7vin, 1.8V/40A out 1V/div 2ms/div Figure 17: Turn off waveform at 7vin, 1.8V/40A out 1V/div 2ms/div 5 TEST CONFIGURATIONS DESIGN CONSIDERATIONS The power module should be connected to a low ac-impedance input source. Highly inductive source impedances 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 17: Peak-peak output ripple & noise and startup transient measurement test setup Note: 6pcs 560µF OSCON, 4pcs 47µF 1210 MLCC and 20pcs 10uF 1206 MLCC capacitor in the module output. Scope measurement should be made by using a BNC connector. DISTRIBUTION LOSSES VI Vo II Io LOAD SUPPLY GND Safety Considerations 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. The input to these units is to be provided with a maximum 15A time-delay fuse in the ungrounded lead. FEATURES DESCRIPTIONS CONTACT RESISTANCE Figure 18: 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. η =( Vo × Io ) × 100 % Vi × Ii Cin 1500uF/16V * 2pcs Aluminum Input To provide protection in an output over load fault condition, the unit is equipped with internal over-current protection. When the over-current protection is triggered, the unit will be shutdown and restart by input or OUTEN on/off. The units operate normally once the fault condition is removed. Over-Temperature Protection Cout Vo SCOPE Over-Current Protection 10uF/16V * 2pcs MLCC To provide additional over-temperature protection in a fault condition, the unit is equipped with a thermal shutdown circuit. The shutdown circuit engages when the temperature of monitored component exceeds approximately 121℃. It can be set with latching mode or auto-restart mode by the external digital IC. The shutdown unit will restart by input or OUTEN on/off while the temperature lower than 113℃ (latching mode), or will auto-restart while the temperature lower than 113℃ (auto-restart mode). Figure 19: Peak-peak Input ripple & noise measurement test setup Note: 2pcs 1,500µF Aluminum and 2pcs 10µF MLCC in the module input. Scope measurement should be made by using a BNC connector. 6 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. D12S72 C Output Current vs. Ambient Temperature and Air Velocity @Vin = 7V, Vo=1.8V (Either Orientation) Output Current(A) 40 35 Natural Convection 30 100LFM 25 Hence, the choice of equipment to characterize the thermal performance of the power module is a wind tunnel. 20 15 10 Thermal Testing Setup 5 0 Delta’s DC/DC power modules are characterized in heated wind tunnels that simulate the thermal environments encountered in most electronics equipment. The following figures show the wind tunnel characterization setup. The power module is mounted on Primarion test board and is horizontally positioned within the wind tunnel. 25 30 35 40 45 50 55 60 65 70 75 80 85 Ambient Temperature (℃) Figure 22: Output current vs. ambient temperature and air velocity@ Vin=7V, Vout=1.8V (Either Orientation) D12S72 C Output Current vs. Ambient Temperature and Air Velocity @Vin = 11V, Vo=1.8V (Either Orientation) Output Current(A) 40 35 Natural Convection 30 100LFM 25 Airflow 20 15 TOP VIEW 10 Airflow 5 0 SIDE VIEW FRONT VIEW Figure 20: Wind Tunnel Test Setup 25 30 35 40 45 50 55 60 65 70 75 80 85 Ambient Temperature (℃) Figure 23: Output current vs. ambient temperature and air velocity@ Vin=11V, Vout=1.8V (Either Orientation) Thermal De-rating The module’s maximum hot spot temperature is +113°C. 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. D12S72 C Output Current vs. Ambient Temperature and Air Velocity @Vin =13.2V, Vo=1.8V (Either Orientation) Output Current(A) 40 35 Natural Convection 30 100LFM 25 20 15 10 5 0 25 30 35 40 45 50 55 60 65 70 75 80 85 Ambient Temperature (℃) Figure 24: Output current vs. ambient temperature and air velocity@ Vin=13.2V, Vout=1.8V (Either Orientation) Figure 21: Temperature measurement location The allowed maximum hot spot temperature is defined at 113℃ 7 D12S72 C Output Current vs. Ambient Temperature and Air Velocity @Vin = 7V, Vo=1.0V (Either Orientation) Output Current(A) 40 Natural Convection 35 30 25 20 15 10 5 0 25 30 35 40 45 50 55 60 65 70 75 80 85 Ambient Temperature (℃) Figure 25: Output current vs. ambient temperature and air velocity@ Vin=7V, Vout=1.0V (Either Orientation) D12S72 C Output Current vs. Ambient Temperature and Air Velocity @Vin = 11V, Vo=1.0V (Either Orientation) Output Current(A) 40 Natural Convection 35 30 100LFM 25 20 15 10 5 0 25 30 35 40 45 50 55 60 65 70 75 80 85 Ambient Temperature (℃) Figure 26: Output current vs. ambient temperature and air velocity@ Vin=11V, Vout=1.0V (Either Orientation) D12S72 C Output Current vs. Ambient Temperature and Air Velocity @Vin =13.2V, Vo=1.0V (Either Orientation) Output Current(A) 40 35 Natural Convection 30 100LFM 25 20 15 10 5 0 25 30 35 40 45 50 55 60 65 70 75 80 85 Ambient Temperature (℃) Figure 27: Output current vs. ambient temperature and air velocity@ Vin=13.2V, Vout=1.0V (Either Orientation) 8 LEADED (Sn/Pb) PROCESS RECOMMEND TEMP. PROFILE Temperature (°C ) 250 200 150 Ramp-up temp. 0.5~3.0°C /sec. 2nd Ramp-up temp. Peak temp. 1.0~3.0°C /sec. 210~230°C 5sec. Pre-heat temp. 140~180°C 60~120 sec. Cooling down rate <3°C /sec. 100 Over 200°C 40~50sec. 50 0 60 120 Time ( sec. ) 180 240 300 Note: The temperature refers to the pin of D12S72C, measured on the pin +Vout joint. LEAD FREE (SAC) PROCESS RECOMMEND TEMP. PROFILE Temp. Peak Temp. 240 ~ 245 ℃ 217℃ Ramp down max. 4℃/sec. 200℃ 150℃ Preheat time 100~140 sec. Time Limited 90 sec. above 217℃ Ramp up max. 3℃/sec. 25℃ Time Note: The temperature refers to the pin of D12S72C, measured on the pin +Vout joint. 9 MECHANICAL CONSIDERATIONS SURFACE-MOUNT TAPE & REEL RECOMMEND LAYOUT 10 MECHANICAL DRAWING 11 Pin No. Name 1 Vin Function Power Input, Voltage range from 7V to 13.2V 2 GND Power Ground 3 +7Vin Voltage range from 4.5V to 7V 4 PWML Separator PWM signal for high efficiency 5 PWMH Separator PWM signal for high efficiency 6 GND 7 Vin Power Input, Voltage range from 7V to 13.2V 8 Cs+ Choke Current Sense Power Ground 9 GND 10 Cs- Choke Current Sense Power Ground 11 Vout Power Output 12 Vout Power Output 13 GND Power Ground 14 Temp- Support Temperature Sense 15 Temp+ Support Temperature Sense PART NUMBERING SYSTEM D 12 S 72 Type of Product Input Voltage Number of Outputs D - DC/DC modules 12 - 7 ~13.2V S - Single C Product Series Option Code 72 - 72W (1.8V/40A) max C- Standard P block, RoHS 6/6 MODEL LIST Model Name D12S72C Input Voltage Output Voltage 7.0 ~ 13.2Vdc 0.8V ~ 1.8V Output Current RoHS Total Height Efficiency 12Vin, 1.8Vout @ 100% load 40A RoHS 6/6 0.5" 91.5% CONTACT: www.delta.com.tw/dcdc USA: Telephone: East Coast: (888) 335 8201 West Coast: (888) 335 8208 Fax: (978) 656 3964 Email: [email protected] Europe: Phone: +41 31 998 53 11 Fax: +41 31 998 53 53 Email: [email protected] Asia & the rest of world: Telephone: +886 3 4526107 Ext 6220~6224 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. 12