DFA20E24S12

DFA20 Single-Output DC-DC Series Data Sheet Description The compact DFA20 Series provides power densities up to 11 watts per cubic inch (0.67 watts per cm3). Ideal for battery-operated, industrial, medical control, and remote data collection systems, this converter has fully-filtered inputs and outputs. Complete overload protection with independent pulse-by-pulse current limiting and an overtemperature shutdown ensures reliable system operation. The output of the converter is electrically isolated, thereby allowing the output to be configured as a positive or negative output voltage. Model Selection Input VDC Model Features • RoHS lead solder exemption compliant • Remote On/Off and trim • Overcurrent protection and thermal shutdown • Efficiencies to 83% • 700V isolation; up to 1544V on 48V converters • Power density up to 11 Watts per cubic inch • Five-sided, shielded case General Specifications (1) Output Output DFA20E12S3.3 DFA20E12S5 DFA20E12S12 DFA20E12S15 Min 9 9 9 9 Max 18 18 18 18 VDC 3.3 5 12 15 mA 4000 4000 1700 1400 DFA20E24S3.3 DFA20E24S5 DFA20E24S12 DFA20E24S15 18 18 18 18 36 36 36 36 3.3 5 12 15 4000 4000 1700 1400 DFA20E48S12 36 72 12 1700 Model numbers highlighted in yellow or shaded are not recommended for new designs. BOTTOM VIEW 2.02 (51.31) SIDE VIEW 0.040 (1.02) DIA 6 PLACES 4 0.700 (17.78) 0.600 (15.24) 0.400 (10.16) 0.300 (7.62) 0.000 0.100 (2.54) 5 1 2 6 2.02 (51.31) Al l Models ON/OFF Function ON Logic Level or Pin Open OFF Logic Level or Tie Pin to -Input Open Circuit Voltage Input Resistance Converter Idle Current ON/OFF Pin Lo w 12V Models 24V and 48V Models Isolation (2 ) Isolation Voltage Input to Output 12V, 24V Input to Output 48V 10μA Leakage Input-to-Output Capacitance Output Trim Function Tr im Range Input Resistance Open Circuit Voltage En vi ronmental Case Operating Range, Tc No Derating Case Functional Range (3) Storage Range 3 7 0.45 (11.43) 0.000 0.25 (6.35) 1.800 (45.72) 0.11 (2.8) 0.000 0.51 (13.0) Mechanical tolerances unless otherwise noted: X.XX dimensions: ±0.020 inches X.XXX dimensions: ±0.005 inches Pin Function 1 2 3 4 5 6 7 +Input -Input On/Off No Pin +Out -Out Trim MCD10079 Rev. 1.3, 15-Jun-10 Unit s MIN > 1.6 VD C MAX < 0.7 VD C T YP TYP 2. 5 20 VDC kOhms TYP TYP 3 5 mA mA MIN MIN 700 1544 VD C T YP 290 pF MIN MIN T YP ±5 10 2. 5 % kOhms V DC MIN MAX MIN MAX MIN MAX T YP -40 85 -50 100 -55 105 105 ˚C ˚C 9. 5 ˚C/Watt T hermal Shutdown Case Temperature T hermal Impedance (4) T YP General MT BF (Calculated) T YP Unit Weight TYP Chassis Mounting Kit 12V, 24V 48V ˚C ˚C 800,000 Hrs 2.3 / 65 oz / gm CM2B 1 CM2A 1 NOTES: (1) All parameters measured at Tc = 25°C, nominal input voltage and full-rated load unless otherwise noted. (2) The Case is tied to the -Input, Pin 2. (3) The functional temperature range is intended to give an additional data point for use in evaluating this power supply. At the low functional temperature the power supply will function with no side effects. However, sustained operation at the high functional temperature will reduce expected operational life. The data sheet specifications are not guaranteed beyond the case operating range. (4) The case thermal impedance is specified as the case temperature rise over ambient per package watt dissipated. Page 1 of 4 www.power-one.com DFA20 Single-Output DC-DC Series Data Sheet Input Parameters (1) Model Voltage Range Reflected Ripple (2) Input Current Full Load No Load Efficiency Switching Frequency Maximum Input Overvoltage, 100ms Maximum Turn-ON Time, 1% Output Error Model Voltage Range Reflected Ripple (2) Input Current Full Load No Load Efficiency Switching Frequency Maximum Input Overvoltage, 100ms Maximum Turn-ON Time, 1% Output Error DFA20E12S3.3 MIN MAX TYP TYP TYP TYP TYP TYP DFA20E12S5 DFA20E12S12 DFA20E12S15 DFA20E24S3.3 9 18 350 100 1.46 16 76 2.12 16 79 DFA20E24S5 18 36 140 40 2.15 16 79 2.21 16 79 0.70 10 80 1.01 10 83 220 MAX 24 45 TYP Units VDC mApp mArms A mA % kHz VDC ms 10 DFA20E24S12 MIN MAX TYP TYP TYP TYP TYP TYP DFA20E24S15 DFA20E48S12 10 1.02 86 36 72 90 25 8 0.51 84 18 36 140 40 10 1.00 85 Units VDC mApp mArms MA A % kHz 220 MAX 45 85 TYP VDC ms 10 Output Parameters (1) Model Output Voltage Output Voltage Accuracy Rated Load Range Load Regulation 25% Max-Max Load Line Regulation Vin = Min-Max VDC Short Term Stability (3) Input Ripple Rejection (4) Noise, 0-20 MHz BW (2) RMS Noise, 0.01 - 1 MHz Temperature Coefficient Short Circuit Protection to Common for all Outputs MIN TYP MAX MIN MAX TYP MAX TYP MAX TYP TYP TYP TYP TYP MAX DFA20E12S3.3 DFA20E24S3.3 3.33 3.30 3.33 3.36 0.0 4.0 DFA20E12S12 DFA20E24S12 DFA20E48S12 12 11.90 12.00 12.10 0.0 1.7 DFA20E12S5 DFA20E24S5 5 4.95 5.00 5.05 0.0 4.0 Units VDC VDC A % 1 0.5 1.0 DFA20E12S15 DFA20E24S15 15 14.90 15.00 15.10 0.0 1.4 0.01 0.1 < 0.05 > 40 75 15 50 150 Continuous, with Thermal Protection % %/24Hrs dB MVpp mVrms ppm/°C NOTES: (1) All parameters measured at Tc = 25°C, nominal input voltage and full-rated load unless otherwise noted. (2) Noise measurement bandwidth is 0-20 MHz for peak-to-peak measurements; 10 kHz to 1 MHz for RMS measurements. Output noise is measured with a 0.01μF ceramic capacitor in parallel with a 1μF, 35V Tantalum capacitor located 1” away from the converter to simulate your PCB’s standard decoupling. Input reflected ripple is measured into a 10μH source impedance. (3) Short-term stability is specified after a 30-minute warmup at full load, constant line and recording the drift over a 24-hour period. (4) The input ripple rejection is specified for DC to 120 Hz ripple with a modulation amplitude of 1% of Vin. MCD10079 Rev. 1.3, 15-Jun-10 Page 2 of 4 www.power-one.com DFA20 Single-Output DC-DC Series Data Sheet DFA20 SERIES APPLICATION NOTES: External Capacitance Requirements No external capacitance is required for operation of the DFA20 Series. The use of input capacitors with less than 0.5 Ohms ESR may cause peaking in the input filter and degrade filter performance. External output capacitance is not required for operation. However, it is recommended that 1μF to 10μF of tantalum and 0.001 to 0.1μF ceramic capacitance be selected for reduced system noise. Additional output capacitance may be added for increased filtering, but should not exceed 400μF. Negative Outputs A negative output voltage may be obtained by connecting the +OUT to circuit ground and connecting -OUT as the negative output. When the ON/OFF pin is pulled low with respect to the -INPUT, the converter is placed in a low power drain state. Output Trim The TRIM pin may be used to adjust the output ±5% from the nominal setting. This function allows adjustment for voltage drops in the system wiring, as well as the 5.2 volt outputs for ECL applications. Figure 1 shows the proper connections to use this function. A trimpot value of 10 kOhms should be used for 3.3 and 5 volt outputs. A trimpot value of 20 kOhms should be used for 12 and 15 volt outputs. If the TRIM function is not required, the pin may be left floating. +OUT 5 TRIM DOWN TRIM 7 Remote ON/OFF Operation The remote ON/OFF pin may be left floating if this function is not used. It is recommended to drive this pin with an open collector arrangement or a relay contact. +OUT 5 10K LOAD -OUT 6 TRIM 7 LOAD TRIM UP -OUT 6 USING TRIMPOT USING FIXED RESISTORS Figure 1. DFA20 SERIES BLOCK DIAGRAM OUTPUT POWER DERATING 20 ISOLATION TRANSFORMER 5 + OUTPUT 6 - OUT 7 TRIM + + INPUT 1 Ð INPUT 2 LC INPUT FILTER CURRENT MODE PWM + ON/OFF 3 ISOLATED FEEDBACK FIVE SIDED SHIELDED COPPER CASE MCD10079 Rev. 1.3, 15-Jun-10 15 POWER OUTPUT THERMAL SHUTDOWN 10 5 Ð LOW TC BANDGAP REFERENCE 0 50 Page 3 of 4 60 70 80 90 AMBIENT TEMPERATURE 100 www.power-one.com DFA20 Single-Output DC-DC Series Data Sheet Typical Performance: (Tc=25˚C, Vin=Nom VDC, Rated Load) 12 VOLT EFFICIENCY Vs. LOAD 4 85 80 LINE = 12VDC 75 LINE = 18VDC 70 80 100% FULL LOAD 75 70 65 0 10 20 30 40 50 60 70 80 90 100 9 10 11 LOAD (%) 24 VOLT EFFICIENCY Vs. LOAD 17 0 18 0 LINE = 24VDC 75 70 85 50% FULL LOAD 80 75 LINE = 36VDC 0 10 20 40 30 50 60 70 80 70 18 90 100 22 24 26 28 30 32 34 LINE = 48VDC 65 10 20 30 40 50 60 70 80 90 100 100% FULL LOAD 80 75 50% FULL LOAD 70 60 36 100% LOAD 1.0 50% LOAD 0.5 0 5 10 OUTPUT VOLTAGE Vs. OUTPUT LOAD 15 2 0 2 5 30 35 0.8 100% LOAD 0.6 0.4 50% LOAD 0.2 0.0 40 44 48 52 56 60 64 68 72 0 10 20 30 4 0 50 60 70 NOTES ON USING THE CURVES 100 1) The input currents are for 20 watts of output power. For ±5 volt output models the current is approximately 15% less. 2) The efficiency curves are for 12 volt output models. To use for other models, adjust as follows: ±5 volt models subtract approximately 3%. ±15volt models add approximately 1%. CURRENT LIMIT MODE > 60 40 80 LINE INPUT (VOLTS) 120 80 40 48 VOLT INPUT CURRENT Vs. LINE INPUT VOLTAGE LINE INPUT (VOLTS) LOAD (%) 18 LINE INPUT (VOLTS) 65 LINE = 72VDC 16 1.5 36 INPUT CURRENT (AMPS) EFFICIENCY (%) 75 14 12 1.0 85 LINE = 36VDC 10 0.0 20 48 VOLT EFFICIENCY Vs. LINE INPUT VOLTAGE 85 8 6 24 VOLT INPUT CURRENT Vs. LINE INPUT VOLTAGE 90 0 4 LINE INPUT (VOLTS) 48 VOLT EFFICIENCY Vs. LOAD 80 2 LINE INPUT (VOLTS) INPUT CURRENT (AMPS) EFFICIENCY (%) EFFICIENCY (%) 16 2.0 LINE = 18VDC 90 EFFICIENCY (%) 15 100% FULL LOAD LOAD (%) NORMALIZED OUTPUT (%) 14 50% LOAD 1 24 VOLT EFFICIENCY Vs. LINE INPUT VOLTAGE 80 60 13 100% LOAD 2 90 85 70 12 3 LINE INPUT (VOLTS) 90 65 INPUT CURRENT (AMPS) 50% FULL LOAD EFFICIENCY (%) EFFICIENCY (%) LINE = 9VDC 65 12 VOLT INPUT CURRENT Vs. LINE INPUT VOLTAGE 12 VOLT EFFICIENCY Vs. LINE INPUT VOLTAGE 85 20 0 0 20 40 60 80 100 120 140 OUTPUT LOAD (%) NUCLEAR AND MEDICAL APPLICATIONS - Power-One products are not designed, intended for use in, or authorized for use as critical components in life support systems, equipment used in hazardous environments, or nuclear control systems without the express written consent of the respective divisional president of Power-One, Inc. TECHNICAL REVISIONS - The appearance of products, including safety agency certifications pictured on labels, may change depending on the date manufactured. Specifications are subject to change without notice. MCD10079 Rev. 1.3, 15-Jun-10 Page 4 of 4 www.power-one.com