DFC25 Triple-Output DC-DC Series Data Sheet Description Features The DFC25 Series dc-dc converter provides three output voltages from a single 12, • Up to 25 watts with triple outputs 24, or 48 volt nominal input for industrial and datacom equipment. Available output • +3.3V or +5V main outputs power ranges up to 25 watts. Excellent noise performance is attained via an • Remote On/Off aluminum case, toroidal magnetics, and double shielded transformers. Common • Common and differential mode input filters mode and differential mode input filtering is integral to the design. Selected models • Main output trim provides 1544 volts isolation from input to output. • Efficiencies to 81% • Operation from -25°C up to 85°C The input and output sections of the DFC25 Series are protected from overvoltage • 700/1544V isolation transients via internal circuitry. Same voltage single output units of the DFC25 • Two-year warranty family may be connected in parallel to achieve additional output current. • UL/CSA/TÜV pending Selection Chart - Up to 25 Watts Output Power BOTTOM VIEW SIDE VIEW Input Range Output Output 0.040 (1.02) DIA 2.50 Model VDC VDC mA MAX (63.5) 9 PLACES Min Max Nominal 9 8 7 6 5 2.75 DFC25E24T3.3/15 18 36 3.3, ±15 5000, ±800 (70.0) DFC25E24T5/12 18 36 5.0, ±12 5000, ±1000 DFC25E24T5/15 18 36 5.0, ±15 5000, ±800 DFC25E48T3.3/12 36 72 3.3, ±12 5000, ±1000 DFC25E48T5/12 36 72 5.0, ±12 5000, ±1000 DFC25E48T5/15 36 72 5.0, ±15 5000, ±800 3.00 (76.2) Model numbers highlighted in yellow or shaded are not recommended for new designs. General Specifications (1) All Models Units 2 1 4 0.25 Isolation (3) (6.3) 0.00 Isolation Voltage Input to Output 12V, 24V Input MIN 700 Volts 48V Input MIN 1544 10µA Leakage Input to Output Capacitance TYP 700 pF PIN CONNECTIONS Remote ON/OFF PIN NUMBER PIN OUT NOTE: All pins are 0.040" ON Logic Level or Pin Open MIN 2.5 Volts 1 -INPUT diameter brass with tin plating. Off Logic Level or Tie to -Input MAX 0.7 Volts 2 +INPUT 3 N/C Converter Idle Current TYP 10 mA Mechanical tolerances unless 4 ON/OFF otherwise noted: Output Trim Function 5 TRIM X.XX dimensions: ±0.020 inches Input Resistance TYP 40 k 6 +3.3V OR +5V X.XXX dimensions: ±0.005 inches Programming Range MIN ±10 % 7 COMMON 8 +12V OR +15V Environmental 9 -12V OR -15V MIN -25 Case Operating Range (2) °C MAX +60 NOTES MIN -40 Case Functional Range °C (1) All parameters measured at 25°C, nominal input voltage, MAX +105 and full rated load unless otherwise noted. Refer to the MIN -45 Technical Reference Section for the definition of Storage Range °C MAX +105 terms, measurement circuits, and other information. Thermal Impedance TYP 10 °C/Watt (2) Derate linearly to 0 Watts at 105°C ambient. Operation to General +70°C ambient with externally supplied forced air cooling, 100LFM. Consult the factory for -40°C operation. MTBF (Calculated) TYP 1,000,000 Hours (3) Case is tied to -Input, Pin 1. Unit Weight TYP 2.6/71 oz/gm REV. NOV 29, 2004 Page 1 of 3 www.power-one.com 0.00 0.45 (11.4) 0.85 (21.6) 1.25 (31.8) 1.65 (42.0) 2.05 (52.1) 0.38 (9.65) 0.000 0.43 (11.0) DFC25 Triple-Output DC-DC Series Data Sheet Input Parameters (1) Model DFC25E24T3.3/15 DFC25E24T5/12 DFC25E24T5/15 DFC25E48T3.3/12 DFC25E48T5/12 DFC25E48T5/15 Units Reflected Ripple (2) TYP 230 230 230 150 150 150 mAPP Input Current Full Load TYP 1780 1563 1563 890 781 781 mA No Load TYP 10 10 10 10 10 10 Inrush Current (5) MAX 50 50 50 50 50 50 APK Efficiency TYP 78 80 80 78 80 80 % Switching Frequency TYP 150 150 150 150 150 150 kHz Maximum Input Overvoltage, MAX 45 45 45 85 85 85 VDC 100ms Maximum Turn-on Time, TYP 10 10 10 10 10 10 mS 1% Output Error Output Parameters (1) Model DFC25EXXT3.3/XX DFC25EXXT5/XX DFC25EXXTX/12 DFC25EXXTX/15 Units Output (8) V1 V1 V2,V3 V2,V3 Output Voltage 3.3 5 12 15 VDC MIN 3.27 5.05 11.88 14.85 Output Voltage Accuracy TYP 3.30 5.10 12.00 15.00 VDC MAX 3.33 5.15 12.12 15.15 MIN 0.5 0.5 0.0 0.0 Rated Load Range A MAX 5.0 5.0 1.0 0.8 Load Regulation TYP 1.0 1.0 8.0 8.0 % 25% Load - Max Load Line Regulation TYP 0.2 0.2 3.0 3.0 % Vin = Min-Max VDC Cross Regulation TYP 3.0 3.0 8.0 8.0 % 25% Load - Max Load (6) Transient Response TYP 2 2 2 2 % 25% Load Step (7) Short Term Stability (3) TYP <0.05 <0.05 <0.05 <0.05 %/24Hrs Long Term Stability TYP <0.1 <0.1 <0.1 <0.1 %/kHrs Input Ripple Rejection (4) TYP >40 >40 >40 >40 dB Noise, Peak - Peak (2) TYP 75 75 120 150 mVPP Temperature Coefficient TYP 100 100 300 300 ppm/°C Short Circuit Protection Continuous, Current Limit Protection from +OUT to -OUT NOTES DFC25 SERIES APPLICATION NOTES: (1) All All parameters measured at Tc=25°C, nominal input voltage and full rated load unless otherwise External Capacitance Requirements noted. Refer to the Reference Section for the definition of terms, measurement circuits and other A low ESR external capacitance is required for operation of the DFC25 Series. For maximum information. performance, it is recommended that the DFC25 Series use a capacitor of sufficient ripple current (2) Noise is measured per the Technical Reference Section. Measurement bandwidth is 0-20 MHz for capacity connected across the input pins, especially if a capacitive input source is farther than 1" peak-peak measurements, 10 kHz to 1 MHz for RMS measurements. Output noise is measured with from the converter. To meet the reflected ripple requirements of the converter, an input impedance a 0.01µF/100V ceramic capacitor in parallel with a 1µF/35V Tantalum capacitor, 1 inch from the of less than 0.09 Ohms at 200 kHz is required. External output capacitance is not required for output pins to simulate standard PCB decoupling capacitance. operation, however it is recommended that 1µF to 10µF of Tantalum and 0.001 to 0.1µF ceramic (3) Short term stability is specified after a 30 minute warm-up at full load, constant line and recording capacitance be selected for each output to reduce system noise. Additional output capacitance may the drift over a 24 hour period. be added for increased filtering, but should not exceed 400µF. (4) The transient response is specified as the time required to settle from a 50 to 75% step load change (rise time of step = 2µSec) to a 1% error band. Remote ON/OFF Operation (5) Per ETSI-300-132 The remote ON/OFF pin may be left floating if this function is not used. It is recommended to drive (6) Change to main channel output for a 25% to 100% change on dual outputs or change on dual this pin with TTL compatible circuitry. When the ON/OFF pin is pulled low with respect to the channel outputs due to a 25% to 100% change on the main channel output. -INPUT, the converter is placed in a low power drain state. The input capacitors are kept fully (7) Recovery to within 1% in less than 1 millisecond after transient has been applied. charged in the OFF mode. For proper operation, this input may be driven from a logic gate directly. (8) V3 is defined as the minus, or negative output. Values in the chart are shown as positive for V2, and The ON/OFF pin should never be pulled more than 0.3 volts below -INPUT or have a voltage can be assumed negative for V3. greater than +6 volts applied. REV. NOV 29, 2004 Page 2 of 3 www.power-one.com DFC25 Triple-Output DC-DC Series Data Sheet 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. REV. NOV 29, 2004 Page 3 of 3 www.power-one.com