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| DFC10 SERIES SINGLE OUTPUT DESCRIPTION The DFC10 Series provides power converter solutions to meet commercial and industrial requirements. With power densities above 11 watts per cubic inch (0.67 watts per cm3), overcurrent protection, and five-sided shielded case, the DFC10 meets the most rigorous needs in an industry standard case size. The 220KHz operating frequency of the DFC10 Series allows an increased power density while including adequate heat sinking and input/output filtering. This eliminates the need for external components in most applications. Full overload protection is provided by pulse-by-pulse current limiting. FEATURES * High Power Density, up to 11 Watts per Cubic Inch (0.67 watts per cm3) * Efficiencies to 83% (Lower for 3.3V) * Low Input to Output Capacitance * 700V Isolation(1544V for 48V Converters) * Continuous Overcurrent Protection * 3.3Volt Output Available * Five-Side Shielded Copper Case * Extended Input Range (2:1) BOTTOM VIEW 2.02 (51.31) 0.300 (7.62) 0.000 0.200 (5.08) 0.500 (12.70) 0.61 (15.5) 0.61 (15.5) 0.000 1 2 5 3 SIDE VIEW 0.040 (1.02) DIA TYP 1.02 (25.91) 0.800 (20.32) Mechanical tolerances unless otherwise noted: X.XX dimensions: 0.020 inches X.XXX dimensions: 0.005 inches NOTES (1) All parameters measured at Tc = 25C, nominal input voltage and full rated load unless otherwise noted. Refer to the Technical Reference Section for the definition of terms, measurement circuits and other information. The Case is tied to the -Input pin. 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. The case thermal impedance is specified as the case temperature rise over ambient per package watt dissipated. (2) (3) (4) Rev. 04/2000 1 0.42 (10.67) 0.3 (7.62) 0.000 DFC10 SERIES - SINGLE OUTPUT NOTES (1) All parameters measured at Tc = 25C, nominal input voltage and full rated load unless otherwise noted. Refer to the Technical Reference Section for the definition of terms, measurement circuits and other information. Noise is measured per Technical Reference Section. Measurement bandwidth is 0-20 MHz for peak-peak measurements, 10 kHz to 1 MHz for RMS measurements. Output noise is measured with a 0.01F / 100V ceramic capacitor in parallel with a 1f / 35V Tantalum capacitor, 1 inch from the output pins to simulate standard PCB decoupling capacitance. Short term stability is specified after a 30 minute warmup at full load, constant line and recording the drift over a 24 hour period. The input ripple rejection is specified for DC to 120 Hz ripple with a modulation amplitude of 1% of Vin. greater than 0.25 ohms. Input capacitors with an ESR less than 0.25 ohms may cause peaking of the input filter and actually degrade circuit performance. External output capacitance is not required for operation, however it is recommended that 1 F to 10 F of tantalum and 0.001 to 0.1 F ceramic capacitance be selected for reduced system noise. Additional output capacitance may be added for increased filtering, but should not exceed 400 F. Negative Outputs A negative output voltage may be obtained by connecting the +OUT to circuit ground and connecting -OUT as the negative output. (2) (3) (4) DFC10 SERIES APPLICATION NOTES: External Capacitance Requirements No external capacitance is required for operation of the DFC10 Series. If a capacitive input source is farther than 1" from the converter, an additional capacitor may be required at the input pins for proper operation. This input capacitor should have an ESR 2 DFC10 SERIES - SINGLE OUTPUT DFC10 SERIES BLOCK DIAGRAM ISOLATION TRANSFORMER OUTPUT POWER DERATING 10 3 + + OUTPUT 8 POWER OUTPUT + INPUT 1 - INPUT 2 LOW NOISE FILTER CURRENT MODE PWM 5 - OUTPUT 6 + - ISO AMP 4 2 SHIELDED COPPER CASE LOW TC BANDGAP REFERENCE 0 50 60 70 80 90 AMBIENT TEMPERATURE 100 Typical Performance: (Tc=25C, Vin=Nom VDC, Rated Load) Data for 12 Volt Input Models 12 VOLT INPUT CURRENT Vs. LINE INPUT VOLTAGE 1.5 85 LINE = 9VDC 12 VOLT EFFICIENCY Vs. LOAD 12 VOLT EFFICIENCY Vs. LINE INPUT VOLTAGE 85 50% FULL LOAD 84 INPUT CURRENT (AMPS) 1.0 EFFICIENCY (%) EFFICIENCY (%) 100% LOAD 80 83 82 81 80 100% FULL LOAD 75 LINE = 12VDC 70 LINE = 18VDC 0.5 50% LOAD 0.0 4 6 8 10 12 14 16 18 65 0 10 20 30 40 50 60 70 80 90 100 9 10 11 12 13 14 15 16 17 18 LINE INPUT (VOLTS) LOAD (%) LINE INPUT (VOLTS) Data for 24 Volt Input Models 24 VOLT INPUT CURRENT Vs. LINE INPUT VOLTAGE 0.8 90 85 0.6 LINE = 18VDC 24 VOLT EFFICIENCY Vs. LOAD 24 VOLT EFFICIENCY Vs. LINE INPUT VOLTAGE 88 100% FULL LOAD INPUT CURRENT (AMPS) EFFICIENCY (%) 100% LOAD 80 75 70 65 0.4 50% LOAD 0.2 EFFICIENCY (%) 86 84 50% FULL LOAD 82 LINE = 24VDC LINE = 36VDC 0 10 20 30 40 50 60 70 80 90 100 0.0 4 8 12 16 20 24 28 32 36 60 80 18 20 22 24 26 28 30 32 34 36 LINE INPUT (VOLTS) LOAD (%) LINE INPUT (VOLTS) Data for 48 Volt Input Models 48 VOLT INPUT CURRENT Vs. LINE INPUT VOLTAGE 0.4 85 80 100% LOAD 0.2 50% LOAD 0.1 LINE = 36VDC 48 VOLT EFFICIENCY Vs. LOAD 48 VOLT EFFICIENCY Vs. LINE INPUT VOLTAGE 85 100% FULL LOAD INPUT CURRENT (AMPS) EFFICIENCY (%) EFFICIENCY (%) 0.3 75 70 65 60 80 50% FULL LOAD 75 55 LINE = 48VDC 50 45 LINE = 72VDC 0 10 20 30 40 50 60 70 80 90 100 0.0 5 15 25 35 45 55 65 75 40 70 35 40 45 50 55 60 65 70 75 LINE INPUT (VOLTS) LOAD (%) LINE INPUT (VOLTS) NUCLEAR AND MEDICAL APPLICATIONS Power-One products are not 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 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. 3 |
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