DFC10 SERIES SINGLE OUTPUT 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) SIDE VIEW 0.040 (1.02) DIA TYP 3 0.000 1 0.200 (5.08) 2 0.500 (12.70) 0.61 (15.5) 1.02 (25.91) 0.42 (10.67) 0.000 0.800 (20.32) 0.000 0.61 (15.5) 5 0.3 (7.62) 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. Mechanical tolerances unless otherwise noted: X.XX dimensions: ±0.020 inches X.XXX dimensions: ±0.005 inches NOTES (1) (2) (3) (4) Rev. 04/2000 1 All parameters measured at Tc = 25°C, 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. DFC10 SERIES – SINGLE OUTPUT NOTES (1) (2) (3) (4) 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. All parameters measured at Tc = 25°C, 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 0.01µF / 100V ceramic capacitor in parallel with a 1µf / 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. External output capacitance is not required for operation, however it is recommended that 1F to 10F of tantalum and 0.001 to 0.1F ceramic capacitance be selected for reduced system noise. Additional output capacitance may be added for increased filtering, but should not exceed 400F. 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 Negative Outputs A negative output voltage may be obtained by connecting the +OUT to circuit ground and connecting -OUT as the negative output. 2 DFC10 SERIES – SINGLE OUTPUT OUTPUT POWER DERATING DFC10 SERIES BLOCK DIAGRAM ISOLATION TRANSFORMER 10 3 + OUTPUT 8 + INPUT 1 – INPUT 2 LOW NOISE FILTER 5 CURRENT MODE PWM POWER OUTPUT + - OUTPUT + 6 4 – ISO AMP 2 LOW TC BANDGAP REFERENCE SHIELDED COPPER CASE 0 50 60 70 80 90 AMBIENT TEMPERATURE 100 Typical Performance: (Tc=25°C, Vin=Nom VDC, Rated Load) Data for 12 Volt Input Models 12 VOLT INPUT CURRENT Vs. LINE INPUT VOLTAGE 85 85 1.0 50% LOAD 0.5 50% FULL LOAD LINE = 9VDC 80 84 EFFICIENCY (%) 100% LOAD EFFICIENCY (%) INPUT CURRENT (AMPS) 12 VOLT EFFICIENCY Vs. LINE INPUT VOLTAGE 12 VOLT EFFICIENCY Vs. LOAD 1.5 75 LINE = 12VDC 70 4 6 8 10 12 14 16 80 65 18 100% FULL LOAD 82 81 LINE = 18VDC 0.0 83 0 10 20 30 LINE INPUT (VOLTS) 40 50 60 70 80 9 90 100 10 11 12 13 14 16 15 17 18 LINE INPUT (VOLTS) LOAD (%) Data for 24 Volt Input Models 24 VOLT INPUT CURRENT Vs. LINE INPUT VOLTAGE 88 90 85 100% LOAD 0.4 50% LOAD 0.2 75 70 65 0.0 4 8 12 16 20 24 28 32 LINE = 18VDC 80 LINE = 24VDC LINE = 36VDC 60 36 EFFICIENCY (%) 0.6 EFFICIENCY (%) INPUT CURRENT (AMPS) 24 VOLT EFFICIENCY Vs. LINE INPUT VOLTAGE 24 VOLT EFFICIENCY Vs. LOAD 0.8 0 10 20 30 LINE INPUT (VOLTS) 40 50 60 70 80 84 50% FULL LOAD 82 80 18 90 100 100% FULL LOAD 86 20 22 24 26 30 28 32 34 36 LINE INPUT (VOLTS) LOAD (%) Data for 48 Volt Input Models 48 VOLT EFFICIENCY Vs. LINE INPUT VOLTAGE 48 VOLT EFFICIENCY Vs. LOAD 0.4 85 0.3 75 85 80 0.2 50% LOAD 0.1 70 65 60 55 LINE = 48VDC 50 40 5 15 25 35 45 55 LINE INPUT (VOLTS) 65 75 80 50% FULL LOAD 75 LINE = 72VDC 45 0.0 100% FULL LOAD LINE = 36VDC EFFICIENCY (%) 100% LOAD EFFICIENCY (%) INPUT CURRENT (AMPS) 48 VOLT INPUT CURRENT Vs. LINE INPUT VOLTAGE 0 10 20 30 40 50 60 LOAD (%) 70 80 90 100 70 35 40 45 50 55 60 65 70 75 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