5W-20W MODULAR DC-DC CONVERTERS WITH NON-ISOLATED I/O ✔ Wide Input Voltage Ranges ✔ Pi Input Filters—Built-in EMI Suppression ✔ 20W Model Includes Remote Shutdown Remote Load Sensing Remote Output Voltage Adjustment ✔ Short-Circuit/Over-Voltage Protection ✔ Compact Packages ✔ Six-Sided Shielding ✔ High Efficiency Ratings ✔ 2-Year Warranty ✔ 200,000-Hour Minimum MTBF CHARACTERISTICS Input Current Max. EMI Suppression.......................Pi input filter, standard. Input Voltage No Full Output Output Reflected Ripple Current...........DCU1-5, 50 mA , max. pp Min. Nom.Max. Load Load Voltage Current Line Load Effi- DCU1-20, 75 mA , max. pp Model (V) (V) (V) (A) (A) (V) (A) Reg. Reg. ciency Continuous Output Power.........See output voltage/current ratings. Output Voltage Tolerance..........DCU1-5, ±2%. DC-DC 5W Single Output DCU1-20WR/5, ±2%. DCU1-5-WR/5 7.0 12 32 0.025 0.600 5.10 1.0 0.5% 0.5% 74% All other DCU1-20 models, ±1%. DC-DC 20W Single Output External Output Trim.................DCU1-20-WR/5, +5%; other DCU1- DCU1-20-WR/5 8.0 24 36 0.015 1.020 5.05 4.0 0.5% 1.0% 82% 20 models, ±5%. Output Noise and Ripple...........DCU1-5, 75 mV , max. pp Notes DCU1-20, 50 mV , max. (Note 2). pp 1. Use of an external input line fuse is recommended: Short-Circuit Protection.............DCU1-5, pulsed overload type. DCU1-5, use a 1.0A/125V slow-blow fuse. DCU1-20, cycle-by-cycle current DCU1-20, use a 5A/125V slow-blow fuse. limiting; internal thermal shutdown. 2. Peak-to-peak and RMS metering equipment must have a 20 MHz frequency Over-Voltage Protection............130% of rated output voltage, typ. response with probes and cables that maintain a frequency response of 20 Reverse Voltage Protection ......Internal shunt diode. Hz to 20 MHz. Output ripple and spikes are measured directly at the output Transient Response..................DCU1-5, 500 µs recovery to within terminals of the converter with a 0.1 µF ceramic capacitor. The probe ground band must make direct contact with the output return or the common 1% of the regulation band after terminal of the converter to prevent erroneous noise measurements. 25% step load change with no more 3. All measurements are at nominal input, full load, and +25°C unless other- than 200 mV deviation. wise specified. DCU1-20, 200 µs recovery to within 4. MTBF is calculated using the parts stress method in MIL-HDBK 217F 1% of the regulation band after (ground benign, T = +25°C). A 50% step load change with no more than 5% deviation. Frequency of Operation ............DCU1-5, 125 kHz. DCU1-20, 72 kHz. Remote Shutdown ....................DCU1-20, ON = 0.5V to VIN(MAX) or open circuit; OFF = 0.25V or less. Standby Mode Current Drain....DCU1-20 series, less than 1.0 mA at VIN = 24V. Temperature Range ..................-25°C to +70°C, no de-rating. Temperature Coefficient............±0.02%/°C over the entire operating temperature range. Relative Humidity......................0 to 95%, non-condensing. Altitude ......................................0 to 10,000 feet. Cooling......................................Convection cooling is adequate. Moving air is recommended for operation in a confined area. Storage Temperature ................-40°C to +100°C. Storage Humidity ......................0 to 95%, non-condensing. Mean Time Between Failures ...DCU1-5, >250,000 hours. DCU1-20, >200,000 hours. (Note 4.) POWER 152 Will Drive · Canton, MA 02021 USA · Phone 781-828-6216 · Fax 781-830-1155 · Email power@nidecpg.com · http://www.nidec.com GENERAL 43 5W-20W MODULAR DC-DC CONVERTERS WITH NON-ISOLATED I/O DCU1-5 SERIES A. Dimensions shown are in inches. B. Tolerances = 0.00 ±0.02 inch. 0.000 ±0.005 inch. C. Module weight = 1.5 oz. (42.5g). DCU1-20 SERIES A. Dimensions shown are in inches. B. Tolerances = 0.00 ±0.02 inch. 0.000 ±0.005 inch. C. Module weight = 7.5 oz. (213g). OUTPUT TRIM Pin-Out Model Selection Guide Pin DCU1-5 Series DCU1-20 Series 1+VIN +VIN DCU1 -5 - WR / 5 2-VIN - VIN DC Output Voltage (V) Series 3+VOUT +Sense 4 N/A Output Trim Number of Outputs DC Input Voltage (WR=Wide Range) 5-VOUT - Sense Output Power (W) 6 N/A +VOUT 7 N/A - VOUT 8 N/A Remote On/Off POWER 152 Will Drive · Canton, MA 02021 USA · Phone 781-828-6216 · Fax 781-830-1155 · Email power@nidecpg.com · http://www.nidec.com GENERAL 44