Document
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.
Selection Chart
Model DFC15U48S5 DFC15U48S12 DFC15U48S15 Input Range VDC Min 20 20 20 Max 60 60 60 Output VDC 5 12 15 Output mA 3000 1250 1000
BOTTOM VIEW 2.02 (51.31) SIDE VIEW 0.040 (1.02) DIA 6 PLACES
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
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) General MTBF (Calculated) Unit Weight Chassis Mounting Kit
NOTES
(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 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.
Units
MIN MAX TYP TYP
8.0 2.0 100 <1
VDC VDC Kohms mA
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) 0.11 (2.8) 0.000
5 1 2 6 1.62 (41.15)
3
7
0.3 (7.62)
1.800 (45.72)
MIN TYP
70 0 300
VDC pF
Mechanical tolerances unless otherwise noted: X.XX dimensions: ±0.020 inches X.XXX dimensions: ±0.005 inches
TYP MIN MIN MAX MIN MAX TYP TYP TYP
20 ±5 -40 90 -55 105 10 800,000 2/57 CM2A1
Kohms % °C °C ° C/Watt HRS oz/gm
Pin 1 2 3 4 5 6 7
Function +INPUT -INPUT ON/OFF NO PIN +OUT -OUT TRIM
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(2) (3) (4)
Rev. 04/2000
1
0.55 (13.97)
0.000
DFC15 SERIES – SINGLE OUTPUT
Input Parameters (1)
Model Voltage Range Input Current Full Load No Load MIN TYP MAX TYP TYP TYP TYP MAX TYP 5 DFC15U48S5 DFC15U48S12 20.0 48.0 60.0 915 4 82 120 75 10 DFC15U48S15 Units VDC 905 4 83 mA % kHz VDC ms
Efficiency Switching Frequency Maximum Input Overvoltage, 100ms No Damage Turn-on Time, 1% Output Error
950 2 79
Output Parameters (1)
Model Output Voltage Rated Load (3) Voltage Range 100% Load Load Regulation 25-100% Full Load Line Regulation Vin = Min-Max VDC Short Term Stability (4) Long Term Stability Input Ripple Rejection (5) Noise, 0-20MHz bw (2) RMS Noise Temperature Coefficient Short Circuit Protection +OUT to -OUT NOTES
(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. 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.
DFC15U48S5 MIN MAX MIN TYP MAX TYP MAX TYP MAX TYP TYP TYP TYP TYP TYP MAX 75 3 5 0 3000 4.95 5.00 5.05 0.5 0.75 0.1 0.15
DFC15U48S12 12 0 1250 11.90 12.00 12.10 0.1 0.2 0.01 0.1 < 0.02 < 0.05 > 60 60 2 50 150 Continuous Current Limit
DFC15U48S15 15 0 1000 14.90 15.00 15.10 0.1 0.2 0.01 0.1
Units VDC mA VDC % % %/24Hrs %/kHrs dB
60 2
mVPP mVrms ppm/°C
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 200KHz is required. External output capacitance is no.