DFC15U48S5

DFC15 Single-Output DC-DC Series Data Sheet Description The DFC15 Series of DC-DC converters is designed to provide a wide range of PCB power solutions. The converters feature 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 ultrawide input range, from 20 to 60 volts, allows use in many industrial and communication applications. Features • RoHS lead solder exemption compliant • Up to 15 watts output power • Efficiencies to 83% • Very low Off current • 700 V isolation • Dual-stage output filter • -40 °C to +90 °C operation • Ultra-wide range input (3:1) • Remote On/Off and Trim Model Selection 60 60 60 5 12 15 3000 1250 1000 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 60 Noise, 0-20MHz bw (2) RMS Noise TYP TYP TYP MAX Temperature Coefficient 75 3 60 2 50 150 Short Circuit Protection +OUT to -OUT mA VDC % % %/24Hrs %/kHrs dB 60 2 m VP P mVrms ppm/°C Continuous Current Limit 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. 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. (3) Minimum load required for rated regulation only. Dynamic response may degrade if run at less than 25% full load. (4) Short term stability is specified after a 30-minute warmup at full load, and with constant line, load and ambient conditions. (5) The input ripple rejection is specified for DC to 120 Hz ripple with a modulation amplitude of 1% Vin. MCD10177 Rev. 1.0, 16-Jun-10 Page 2 of 4 www.power-one.com DFC15 Single-Output DC-DC Series Data Sheet DFC15 SERIES BLOCK DIAGRAM OUTPUT POWER DERATING SHIELDED ISOLATION TRANSFORMER 15 + + INPUT 1 – INPUT 2 6 - OUTPUT CURRENT MODE PWM + ON/OFF 3 + OUTPUT ISOLATED FEEDBACK FIVE SIDED SHIELDED COPPER CASE 7 TRIM POWER OUTPUT 5 + 10 5 – LOW TC BANDGAP REFERENCE 0 40 60 70 80 50 AMBIENT TEMPERATURE 90 DFC15 Series Application Notes: 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 200 kHz is required. External output capacitance is not required for operation, however it is recommended that 1 μF to 10 μF of tantalum and 0.001 to 0.1 μF ceramic capacitance be selected for reduced system noise. Additional output capacitance may be added for increased filtering, but should not exceed 400 μF. Negative Outputs A negative output voltage may be obtained by connecting the +OUT to circuit ground and connecting -OUT as the negative output. 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 100 kV 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 10 kV should be used for 5 volt outputs. A trimpot value of 20 kV should be used for 12 and 15 volt outputs. If the TRIM function is not required, the pin may be left floating. MCD10177 Rev. 1.0, 16-Jun-10 Page 3 of 4 www.power-one.com DFC15 Single-Output DC-DC Series Data Sheet Typical Performance: (Tc=25°C, Vin=Nom VDC, Rated Load) EFFICIENCY Vs. LOAD EFFICIENCY Vs. LINE INPUT VOLTAGE 90 85 50% FULL LOAD LINE = 20VDC EFFICIENCY (%) EFFICIENCY (%) 85 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 60 70 80 90 100 1.2 100% FULL LOAD INPUT CURRENT (AMPS) REFLECTED RMS RIPPLE (AMPS) 50 INPUT CURRENT Vs. INPUT VOLTAGE INPUT RIPPLE Vs. LINE INPUT 1.00 0.80 75% FULL LOAD 0.60 50% FULL LOAD 0.40 0.20 20 40 LOAD (%) LINE INPUT (VOLTS) 25 30 35 40 45 50 55 60 1.0 0.8 0.6 100% LOAD 0.4 0.2 50% LOAD 0.0 LINE INPUT (VOLTS) 0 10 30 20 40 50 60 LINE INPUT (VOLTS) OUTPUT VOLTAGE Vs. OUTPUT LOAD +OUT 5 +OUT 5 TRIM DOWN TRIM 7 10K LOAD -OUT 6 TRIM 7 LOAD TRIM UP -OUT 6 USING TRIMPOT USING FIXED RESISTORS Figure 1. OUTPUT VOLTAGE (%) 120 100 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 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. MCD10177 Rev. 1.0, 16-Jun-10 Page 4 of 4 www.power-one.com