DFC15 SERIES SINGLE OUTPUT DESCRIPTION The DFC15 Series of DC/DC converters are designed to provide a wide range of PCB power solutions. The converter features dual output filters for low noise. Trim and remote ON/OFF features give flexibility to designs. The output of the converter is electrically isolated, thereby allowing the output to be configured as a positive or negative output voltage. The ultra-wide input range, from 20 to 60 volts, allows use in many industrial and communication applications. FEATURES • Up to 15 Watts Output Power • Efficiencies to 83% • Very Low OFF Current • 700V Isolation • Dual Stage Output filter • -40°C to +90°C Operation • Ultra-Wide Range Input (3:1) • Remote ON/OFF and TRIM Selection Chart 60 60 60 5 12 15 3000 1250 1000 General Specifications (1) All Models ON/OFF Function (2) OFF Logic Level or Pin Open OFF Logic Level Input Resistance Converter Idle Current ON/OFF Pin Low Isolation (3) Isolation Voltage Input to Output 10 µA Leakage Input to Output Capacitance Output Trim Function Input Resistance Open Circuit Voltage Environmental Case Operating Range, Tc No Derating Storage Range Thermal Impedance (5) Units MIN 8.0 VDC MAX TYP 2.0 100 VDC Kohms TYP <1 mA MIN 70 0 VDC TYP 300 pF TYP MIN 20 ±5 Kohms % MIN MAX MIN MAX °C TYP -40 90 -55 105 10 ° C/Watt TYP TYP 800,000 2/57 HRS oz/gm 0.700 (17.78) 0.600 (15.24) 0.400 (10.16) 0.300 (7.62) 0.000 0.100 (2.54) 0.31 (7.9) SIDE VIEW 0.040 (1.02) DIA 6 PLACES 5 1 2 6 3 1.62 (41.15) 7 Mechanical tolerances unless otherwise noted: X.XX dimensions: ±0.020 inches X.XXX dimensions: ±0.005 inches Pin 1 2 3 4 5 6 7 °C Function +INPUT -INPUT ON/OFF NO PIN +OUT -OUT TRIM General MTBF (Calculated) Unit Weight Chassis Mounting Kit CM2A1 For the Most Up-To-Date Information NOTES (1) (2) (3) (4) www.power-one.com 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 ON/OFF pin is the Open Collector TTL, CMOS, and relay compatible. The input to this pin is referenced to Pin 2 (-Input) and is protected to +75VDC. The Case is tied to Pin 3, +Input pin. The case thermal impedance is specified as the case temperature rise over ambient per package watt dissipated. Rev. 04/2000 24 Hours/Day—7 Days/Week 1 0.55 (13.97) 20 20 20 BOTTOM VIEW 2.02 (51.31) 0.000 Max Output mA 0.3 (7.62) DFC15U48S5 DFC15U48S12 DFC15U48S15 Min Output VDC 1.800 (45.72) Model 0.11 (2.8) 0.000 Input Range VDC DFC15 SERIES – SINGLE OUTPUT Input Parameters (1) Model DFC15U48S5 Voltage Range Input Current Full Load No Load Efficiency Switching Frequency Maximum Input Overvoltage, 100ms No Damage Turn-on Time, 1% Output Error MIN TYP MAX TYP TYP TYP TYP DFC15U48S12 20.0 48.0 60.0 915 4 82 120 950 2 79 MAX TYP DFC15U48S15 VDC 905 4 83 75 5 Units mA % kHz VDC 10 ms Output Parameters (1) Model Output Voltage Load Regulation 25-100% Full Load Line Regulation Vin = Min-Max VDC Short Term Stability (4) MIN MAX MIN TYP MAX TYP MAX TYP MAX TYP Long Term Stability TYP Input Ripple Rejection (5) TYP Noise, 0-20MHz bw (2) RMS Noise TYP TYP TYP MAX Rated Load (3) Voltage Range 100% Load Temperature Coefficient DFC15U48S5 DFC15U48S12 DFC15U48S15 Units 5 0 3000 4.95 5.00 5.05 0.5 0.75 0.1 0.15 12 0 1250 11.90 12.00 12.10 0.1 0.2 0.01 0.1 < 0.02 15 0 1000 14.90 15.00 15.10 0.1 0.2 0.01 0.1 VDC Short Circuit Protection +OUT to -OUT (2) (3) (4) (5) % dB 60 2 mVPP mVrms ppm/°C Continuous Current Limit DFC15 SERIES APPLICATION NOTES: NOTES (1) % %/kHrs > 60 60 2 50 150 VDC %/24Hrs < 0.05 75 3 mA External Capacitance Requirements No external capacitance is required for operation of the DFC15 Series. However, for maximum performance, it is recommended that the DFC15 Series use a capacitor of sufficient ripple current capacity connected across the input pins if a capacitive input source is farther than 1” from the converter. To meet the reflected ripple requirements of the converter, an input impedance of less than 0.05 Ohms from DC to 200KHz is required. 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. 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. RMS noise is measured over a 0.01-1 MHz bandwidth. To simulate standard PCB decoupling practices, output noise is measured with a 1µF/35V tantalum capacitor located 1 inch away from the converter. Minimum load required for rated regulation only. Dynamic response may degrade if run at less than 25% full load. Short term stability is specified after a 30 minute warm-up at full load, and with constant line, load and ambient conditions. The input ripple rejection is specified for DC to 120Hz ripple with a modulation amplitude of 1% Vin. Negative Outputs A negative output voltage may be obtained by connecting the +OUT to circuit ground and connecting -OUT as the negative output. (continued) 2 DFC15 SERIES – SINGLE OUTPUT DFC15 SERIES BLOCK DIAGRAM OUTPUT POWER DERATING SHIELDED ISOLATION TRANSFORMER 15 5 2 + ISOLATED FEEDBACK FIVE SIDED SHIELDED COPPER CASE APPLICATION NOTES (cont’d): 7 TRIM 10 5 – LOW TC BANDGAP REFERENCE 0 40 60 70 80 50 AMBIENT TEMPERATURE 90 Typical Performance: (Tc=25°C, Vin=Nom VDC, Rated Load) 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. When the ON/OFF pin is pulled low with respect to the -INPUT, the converter is placed in a low power drain state. Do not drive this input from a logic gate directly; there is a 100K internal pull-up resistor to a 9 volt source. 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 5.2 volt outputs for ECL applications. Figure 1 shows the proper connections to use this function. A trimpot value of 10K should be used for 5 volt outputs. A trimpot value of 20K should be used for 12 and 15 volt outputs. If the TRIM function is not required the pin may be left floating. EFFICIENCY Vs. LOAD EFFICIENCY Vs. LINE INPUT VOLTAGE 90 85 50% FULL LOAD LINE = 20VDC 85 EFFICIENCY (%) 3 82 100% FULL LOAD 80 77 80 LINE = 48VDC 75 70 65 75 20 LINE = 60VDC 60 25 30 35 40 45 50 55 0 60 10 20 30 INPUT RIPPLE Vs. LINE INPUT 50 60 70 80 90 100 INPUT CURRENT Vs. INPUT VOLTAGE 1.00 1.2 100% FULL LOAD 0.80 75% FULL LOAD 0.60 50% FULL LOAD 0.40 0.20 20 40 LOAD (%) LINE INPUT (VOLTS) REFLECTED RMS RIPPLE (AMPS) ON/OFF POWER OUTPUT – INPUT 6 - OUTPUT CURRENT MODE PWM EFFICIENCY (%) 1 INPUT CURRENT (AMPS) + INPUT + OUTPUT + + 25 30 35 40 45 50 55 1.0 0.8 0.6 100% LOAD 0.4 0.2 50% LOAD 0.0 60 0 10 30 20 LINE INPUT (VOLTS) 40 50 60 LINE INPUT (VOLTS) OUTPUT VOLTAGE Vs. OUTPUT LOAD 120 +OUT 5 OUTPUT VOLTAGE (%) +OUT 5 TRIM DOWN TRIM 7 10K LOAD -OUT 6 USING TRIMPOT TRIM 7 LOAD TRIM UP -OUT 6 Figure 1. USING FIXED RESISTORS 100 80 60 40 20 0 0 20 40 60 80 100 120 140 160 180 OUTPUT LOAD (%) 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