FEATURES High Efficiency: 94% @ 12Vin, 5.1V/30A out Wide input range: 10.8V~13.2V Output voltage programmable from 0.9Vdc to 5.1Vdc via external resistors No minimum load required Fixed frequency operation Input UVLO, output OCP, OVP. Remote On/Off (Positive logic) Power Good Function ISO 9001, TL 9000, ISO 14001, QS 9000, OHSAS 18001 certified manufacturing facility D12S05030-2 Non-Isolated Point of Load DC/DC Power Modules: 10.8~13.2Vin, 0.9V-3.3V, 40A & 5.1V, 30A out OPTIONS The D12S05030-2 series, 10.8~13.2V 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 D12S05030-2 series product provides up to 40A (3.3V and below) and the output can be resistor trimmed from 0.9Vdc to 5.1Vdc. It provides a very cost effective point of load solution. 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. APPLICATIONS DATASHEET DS_D12S05030-2_12122008 Telecom/DataCom Distributed power architectures Servers and workstations LAN/WAN applications Data processing applications TECHNICAL SPECIFICATIONS (TA=25C, airflow rate=400LFM, Vin=12Vdc, nominal Vout unless otherwise noted.) PARAMETER NOTES and CONDITIONS D12S05030-2 Min. ABSOLUTE MAXIMUM RATINGS Input Voltage Operating Temperature Storage Temperature Output Power INPUT CHARACTERISTICS Operating Input Voltage Input Current No-Load Input Current Turn on threshold Turn off threshold OUTPUT CHARACTERISTICS Output Voltage Adjustment Range Output Current Output Regulation Output Ripple Transient Response Rise Time Turn-on Delay (from input power) Turn-on Delay (remote on/off) Power Good Delay External Output Capacitance PROTECTION Short Circuit Protection Over Voltage Protection EFFICIENCY Vo=0.9V Vo=1.25V Vo=1.5V Vo=1.8V Vo=2.5V Vo=3.3V Vo=5.1V FEATURE CHARACTERISTICS Switching Frequency Enable Signal GENERAL SPECIFICATIONS MTBF Weight Refer to Figures 36 and 41 for the measuring point Typ. 0 0 -40 Max. Units 14 85 125 Vdc C C W 13.2 18 300 10.4 9.6 V A mA Vdc Vdc 5.1 40 30 +3 50 150 150 150 150 160 160 160 5 50 10 100 5000 V A A % of Vo mVpk-pk mVpk mVpk mVpk mVpk mVpk mVpk mVpk mS mS mS mS uF 250 150 10.8 Vin=12V, Vo=5.1V, Io=30A Vin=12V, Vo=5.1V, Io=0A 9.6 9.2 Vo=0.9~3.3V Vo=5.1V Measured at remote sense pin at 0.5* maximum load 20MHz bandwidth A step load change of 10A at 1A/s 0.9Vo A step load change of 10A at 1A/s 1.25Vo A step load change of 10A at 1A/s 1.5Vo A step load change of 10A at 1A/s 1.8Vo A step load change of 10A at 1A/s 2.5Vo A step load change of 10A at 1A/s 3.3Vo A step load change of 10A at 1A/s 5.1Vo From 10% to 90% of Vo Vin=12V, Io=min-max. (within 90% of Vo) Vin=12V, Io=min-max. (within 90% of Vo) All conditions (within 10% of Vo) 200 10.0 9.4 0.9 0 0 -3 20 90 90 90 100 100 100 110 1.6 26 2 91 All conditions (Hiccup mode) All conditions 115 % % Vin=12V, Io=40A Vin=12V, Io=40A Vin=12V, Io=40A Vin=12V, Io=40A Vin=12V, Io=40A Vin=12V, Io=40A Vin=12V, Io=30A 77.5 82.3 84.0 86.1 88.9 91.1 94.0 % % % % % % % 500 KHz V V Fixed, Per phase High level (output on) Low level (output off) 3.0 0 0.6 8.46 21.5 M hours grams DS_D12S05030-2_12122008 2 90 100 85 95 Efficiency (%) Efficiency (%) ELECTRICAL CHARACTERISTICS CURVES 80 75 70 65 90 85 80 75 60 0 5 10 15 20 25 30 35 70 40 0 5 10 Output Current, Io (A) Figure 1: Converter efficiency vs. output current (12V input, 0.9V output) 20 25 30 35 40 35 40 Figure 2: Converter efficiency vs. output current (12V input, 1.5V output) 100 100 95 95 90 Efficiency (%) Efficiency (%) 15 Output Current, Io (A) 85 80 75 90 85 80 75 70 0 5 10 15 20 25 30 35 70 40 0 Output Current, Io (A) 5 10 15 20 25 30 Output Current, Io (A) Figure 4: Converter efficiency vs. output current (12V input, 2.5V output) 100 100 95 95 Efficiency (%) Efficiency (%) Figure 3: Converter efficiency vs. output current (12V input, 1.8V output) 90 85 80 75 90 85 80 75 70 70 0 5 10 15 20 25 30 Output Current, Io (A) Figure 5: Converter efficiency vs. output current (12V input, 3.3V output) 35 40 0 5 10 15 20 25 30 Output Current, Io (A) Figure 6: Converter efficiency vs. output current (12V input, 5.1V output) DS_D12S05030-2_12122008 3 ELECTRICAL CHARACTERISTICS CURVES (CONTINUED) Figure 7: Output ripple & noise at 12Vin, 0.9V output Figure 8: Output ripple & noise at 12Vin, 1.5V output Figure 9: Output ripple & noise at 12Vin, 1.8V output Figure 10: Output ripple & noise at 12Vin, 2.5V output Figure 11: Output ripple & noise at 12Vin, 3.3V output Figure 12: Output ripple & noise at 12Vin, 5.1V output DS_D12S05030-2_12122008 4 ELECTRICAL CHARACTERISTICS CURVES (CONTINUED) Figure 13: Control Turn-on at 12Vin, 0.9V output (Ch2: Enable, Ch3: PG, Ch4: Vo) Figure 14: Control Turn-on at 12Vin, 1.5V output (Ch2: Enable, Ch3: PG, Ch4: Vo) Figure 15: Control Turn-on at 12Vin, 1.8V output (Ch2: Enable, Ch3: PG, Ch4: Vo) Figure 16: Control Turn-on at 12Vin, 2.5V output (Ch2: Enable, Ch3: PG, Ch4: Vo) Figure 17: Control Turn-on at 12Vin, 3.3V output (Ch2: Enable, Ch3: PG, Ch4: Vo) Figure 18: Control Turn-on at 12Vin, 5.1V output\ (Ch2: Enable, Ch3: PG, Ch4: Vo) DS_D12S05030-2_12122008 5 ELECTRICAL CHARACTERISTICS CURVES (CONTINUED) Figure 19: Transient Response, 12Vin, 0.9V output Load: 0~10A, Offset: 930mV Figure 20: Transient Response, 12Vin, 0.9V output Load: 30~40A, Offset: 866mV Figure 21: Transient Response, 12Vin, 1.5V output Load: 0~10A, Offset: 1.54V Figure 22: Transient Response, 12Vin, 1.5V output Load: 30~40A, Offset: 1.4V Figure 23: Transient Response, 12Vin, 1.8V output Load: 0~10A, Offset: 1.85V Figure 24: Transient Response, 12Vin, 1.8V output Load: 30~40A, Offset: 1.71V DS_D12S05030-2_12122008 6 ELECTRICAL CHARACTERISTICS CURVES (CONTINUED) Figure 25: Transient Response, 12Vin, 2.5V output Load: 0~10A, Offset: 2.54V Figure 26: Transient Response, 12Vin, 2.5V output Load: 30~40A, Offset: 2.4V Figure 27: Transient Response, 12Vin, 3.3V output Load: 0~10A, Offset: 3.34V Figure 28: Transient Response, 12Vin, 3.3V output Load: 30~40A, Offset: 3.19V Figure 29: Transient Response, 12Vin, 5.1V output Load: 0~10A, Offset: 5.19V Figure 30: Transient Response, 12Vin, 5.1V output Load: 20~30A, Offset: 5.03V DS_D12S05030-2_12122008 7 DESIGN CONSIDERATIONS The D12S05030-2 series uses a voltage mode controlled buck topology. The output can be trimmed in the range of 0.9Vdc to 5.1Vdc by an external resistor from Trim(+) pin to GND. The converter can be turned ON/OFF by remote control with positive on/off (ENABLE pin) logic. The converter DC output is disabled when the signal is driven low. When this pin is floating the module will turn on. The converter can protect itself by entering hiccup mode against over current and short circuit condition. Also, the converter will shut down when an over voltage protection is detected. FEATURES DESCRIPTIONS ENABLE (On/Off) D12S05030-2 series uses Positive Enable logic, pulling the pin low will turn off the unit. With the active high function, the output is guaranteed to turn on if the ENABLE pin is driven above 3.0V. The output will turn off if the ENABLE pin voltage is pulled below 0.6V. The D12S05030-2 series is turned on if the ENABLE pin is floating. The ENABLE input can be driven in a variety of way as shown in Figures 31. Short-Circuit Protection The D12S05030-2 series has non-latching short-circuit protection circuitry. When short circuit condition occurs, the module goes into the non-latching hiccup mode. When the short circuit condition is removed, the module will resume normal operation. An over current condition is detected by measuring the voltage drop across the Rds(on) of Low side MOSFET. Rds(on) is affected by temperature, therefore ambient temperature will affect the current limit inception point. Output Over Voltage Protection (OVP) The converter will shut down when an output over voltage protection is detected. Once the OVP condition is detected, controller will stop all PWM outputs and turn on low-side MOSFET to prevent any damage to load. The OV_Set resistor equation for the D12S05030-2 series is: ROV_Set = 408.8/(Vo - 0.8) Vin Unit Vout Trim(+) Unit Enable OVset R_OVset Vin Vout Enable Trim GND GND GND GND Figure 32: OVP setting resistor The resistor shall be 0.2% or better tolerance part. Figure 31: Enable Input drive circuit Input Under-Voltage Lockout The input under-voltage lockout prevents the converter from being damaged while operating when the input voltage is too low. Default lockout range is between 10.0V and 9.5V. OUTPUT OV_Set resistor 0.90V 4.02k 1.25V 909R 1.50V 576R 1.80V 402R 2.50V 237R 3.30V 162R 5.10V 95.3R Table 1: Typical OV_set resistor values DS_D12S05030-2_12122008 8 FEATURES DESCRIPTIONS (CONT.) Output Voltage Programming Output Voltage Droop The output voltage of the D12S05030-2 series is adjustable by connecting an external resistor between the trim (+) pin and GND pin as shown Figure 33 and the typical trim resistor values are shown in Table 2. Floating the DROOP_SET pin (Pin 26) will disable the Droop function. Unit Vo = 0.8264*(1+ (5360/Rtrim) - (83.333*10-9*Io*R Droop_set) Vin Vout Enable Trim(+) The resistor shall be 0.2% or better tolerance part. Rtrim GND The Droop_Set resistor equation for the D12S05030-2 series is: GND Figure 33: Trimming Output Voltage The D12S05030-2 series module has a trim range of 0.9V to 5.1V. The V_Set resistor equation for the D12S05030-2 series is: OUTPUT Droop_Set Droop Voltage 0.90V 1.25V 18.2k 18.2k 30mV 30mV 1.50V 30.1k 50mV 1.80V 30.1k 50mV 2.50V 30.1k 50mV 3.30V 41.2k 70mV 5.10V 84.5k 100mV Table 3: Typical Droop_Set resistor values Vo = 0.8264*(1+ (5360/Rtrim) - (83.333*10-9*Io*RDroop_set) Power Good The resistor shall be 0.1% or better tolerance part. The converter provides an open collector signal called Power Good. This output pin uses positive logic and is open-drain. OUTPUT V_Set resistor 0.90V 1.25V 42.2k 9.76k 1.50V 6.12k 1.80V 4.32k 2.50V 2.58k 3.30V 1.74k 5.10V 1.01k The power good signal is pulled low when an input under voltage, output over voltage or output over current conditions is detected or when the converter is disabled by ENABLE. Output Capacitance There is output capacitor on the D12S05030-2 series. And the host external output capacitance (>91uF) is required for stable operation. Table 2: Typical V_Set resistor values DS_D12S05030-2_12122008 9 THERMAL CONSIDERATIONS 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. THERMAL CURVES Horizontal Module (D12S05030-2 B) Hence, the choice of equipment to characterize the thermal performance of the power module is a wind tunnel. Transverse 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. 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. Pin 1 Longitudinal Figure 35: Hot spot temperature measured point The allowed maximum hot spot temperature is defined at 95. 35 Output Current(A) D12S05030-2 B Output Current vs. Ambient Temperature and Air Velocity @ Vin = 12V, Vout = 5.1V (Horizontal module, Longitudinal orientation) PWB Facing plank 30 Wind tunnel wall Wind tunnel wall 25 100LFM 20 Module 200LFM 7 62mm (0 3") 300LFM 15 400LFM 500LFM 10 600LFM 5 Air velocity and ambient 50.8mm measured location Airflow (2.0") Height of module 0 25 30 35 40 45 50 55 60 65 70 75 80 85 Ambient Temperature () Figure 36: Output current vs. ambient temperature and air velocity @Vin = 12V, Vout=5.1V (Longitudinal, Worst Orientation) Figure 34: Wind tunnel test setup Thermal Derating Heat can be removed by increasing airflow over the module. The module's maximum hot spot temperature is defined at 95 for horizontal module and 100 for vertical 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_D12S05030-2_12122008 10 45 Output Current(A) D12S05030-2 B Output Current vs. Ambient Temperature and Air Velocity @ Vin = 12V, Vout = 3.3V (Horizontal module, Longitudinal orientation) Vertical Module (D12S05030-2 A) 40 35 30 25 100LFM 200LFM 20 300LFM 400LFM 15 500LFM 10 600LFM 5 0 25 30 35 40 45 50 55 60 65 70 75 80 85 Ambient Temperature () Figure 37: Output current vs. ambient temperature and air velocity @Vin = 12V, Vout=3.3V (Longitudinal, Worst Orientation) 35 Output Current(A) D12S05030-2 B Output Current vs. Ambient Temperature and Air Velocity @ Vin = 12V, Vout = 5.1V (Horizontal module, Transverse orientation) Figure 40: Hot spot temperature measured point The allowed maximum hot spot temperature is defined at 100. 30 25 D12S05030-2 A Output Current vs. Ambient Temperature and Air Velocity @ Vin = 12V, Vout = 5.1V (Vertical module, Worse orientation) Output Current(A) 35 100LFM 20 200LFM 300LFM 15 30 400LFM 500LFM 25 10 100LFM 600LFM 20 200LFM 5 300LFM 15 400LFM 0 25 30 35 40 45 50 55 60 65 70 75 80 85 Ambient Temperature () 500LFM 10 Figure 38: Output current vs. ambient temperature and air velocity @Vin = 12V, Vout=5.1V (Transverse, Worst Orientation) 45 Output Current(A) 600LFM 5 D12S05030-2 B Output Current vs. Ambient Temperature and Air Velocity @ Vin = 12V, Vout = 3.3V (Horizontal module, Transverse orientation) 0 25 30 35 40 45 50 55 60 65 70 40 75 80 85 Ambient Temperature () Figure 41: Output current vs. ambient temperature and air velocity @Vin = 12V, Vout=5.1V (Worst Orientation) 35 30 Output Current(A) 45 D12S05030-2 A Output Current vs. Ambient Temperature and Air Velocity @ Vin = 12V, Vout = 5.1V (Vertical module, Worse orientation) 25 100LFM 40 200LFM 20 35 300LFM 400LFM 15 30 500LFM 10 600LFM 100LFM 25 5 200LFM 20 300LFM 0 25 30 35 40 45 50 55 60 65 70 75 80 85 Ambient Temperature () Figure 39: Output current vs. ambient temperature and air velocity @Vin = 12V, Vout=3.3V (Transverse, Worst Orientation) 15 400LFM 500LFM 10 600LFM 5 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=3.3V (Worst Orientation) DS_D12S05030-2_12122008 11 MECHANICAL DRAWING (Vertical : D12S05030-2 A) DS_D12S05030-2_12122008 12 MECHANICAL DRAWING (Horizontal : D12S05030-2 B) DS_D12S05030-2_12122008 13 D12S05030 SERIES MODEL LIST Model Name Input Voltage Output Voltage Output Current Lead Free Package D12S05030-2 A 10.8V ~ 13.2V 0.9V ~ 5.1V 40A/30A RoHS 6 Vertical D12S05030-2 B 10.8V ~ 13.2V 0.9V ~ 5.1V 40A/30A RoHS 6 Horizontal CONTACT: www.delta.com.tw/dcdc USA: Telephone: East Coast: (888) 335 8201 West Coast: (888) 335 8208 Fax: (978) 656 3964 Email: DCDC@delta-corp.com Europe: Telephone: +41 31 998 53 11 Fax: +41 31 998 53 53 Email: DCDC@delta-es.tw Asia & the rest of world: Telephone: +886 3 4526107 Ext.6220~6224 Fax: +886 3 4513485 Email: DCDC@delta.com.tw 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_D12S05030-2_12122008 14