DCDC 35150 Watts xppower.com MTC Series • 1040 VDC Input Range • Designed for Vetronic & Avionic Use • Magnetic Feedback Technology • 55 °C to +100 °C Operation • MILSTD 461 and DEFSTAN 59411 • MILSTD 1275 and DEFSTAN 615 • 3 Year Warranty Specification Input Input Voltage Range Transient Input Range Inrush Current Turn On Turn Off Input Reverse Voltage Protection Input Current General • • • • • • 10.0-40.0 VDC 50 VDC for 100 ms <40 A at 28 VDC >9.5 VDC <9.0 VDC None • See table Output • See table • -20%, +10% (±10% for 3.3 V version), see note 2 Minimum Load • No minimum load required on single output models, 5% load required on each output of dual output models Line Regulation • ±1% Vout nominal Load Regulation • Single Output: ±1% Vout nominal, Dual Output: ±2% Output Set Tolerance • ±1.5% max Ripple & Noise • ≤5 Vout: 50 mV pk-pk max, >5 Vout: 100 mV pk-pk, at max load and 20 MHz bandwidth Overvoltage Protection • 120-140% Vout max Overcurrent Protection • 110-140% at nominal Iout, constant power down to 40-50% of nominal output voltage Short Circuit Protection • Continuous trip and restart (hiccup mode) until the short is removed Output Voltage Output Voltage Trim Maximum Capacitive Load Thermal Warning Remote Sense Cross Regulation Transient Response • 300 µF x Iout max for startup within 100 ms • Active when internal temp is >105 ˚C • Compensates for 0.5 V total voltage drop • ±4% on dual outputs (see note 3) • ±4% max deviation recovery to within 1% in 500 µs for a 50% load change at 0.1 A/µs Start Up Time • <100 ms Start Up Rise Time • <20 ms Current Share • Parallel up to 4 modules, single output versions only (MTC75 & 150 only) Temperature Coefficient • 0.03%/˚C Remote On/Off • On: ≥3.5 V or open circuit, Off: ≤1.8 V Efficiency Isolation Isolation Capacitance Switching Frequency Frequency Synchronization Power Density MTBF • See table • 1500 VDC Input to Output 1000 VDC Input to Case 1000 VDC Output to Case • 2500 pF • Fixed, 400 kHz typical (MTC35 & 50) 450 kHz typical (MTC75 & 150) • 400-500 kHz (MTC35 & 50) 450-550 kHz (MTC75 & 150) • MTC35: 31.8 W/in3, MTC50: 30.2 W/in3, MTC75: 27.4 W/in3, MTC150: 54.8 W/in3, • >1 MHrs to MIL-HDBK-217F at 25 °C, GF Environmental Case Temperature Storage Temperature Cooling Operating Humidity • • • • Operating Altitude Shock Vibration • • • Bump • Salt Atmosphere • -40 °C to +100 °C (start up at -55 °C) -60 °C to +125 °C Conduction cooling through baseplate 95% Relative Humidity 240 hrs MIL-STD-810F Method 507.4 Tested to 70000 ft (21336 m) 75 g MIL-STD-810F Method 516.5 15 to 2000 Hz MIL-STD-810F Method 514.5, table 514.5-VIII 2000 Bumps in each axis 40 g MIL-STD-810F Method 516.5 48 hrs MIL-STD-810F Method 509.4 EMC Conducted Emissions Immunity Conducted Susceptibility • EN55022 Conducted Level B* MIL-STD 461F: CE102* DEF STAN 59-411 DCE01/DCE02* • MIL-STD-704 B-F, MIL-STD-1275A/B/C/D* • MIL-STD-461F CS101, CS114, CS115, CS116* DEF-STAN 61-5 part 6 issue 5* * When used in conjunction with standard EMI filter and surge protection modules, DSF and FSO series. Consult longform datasheet. Output Power 35 35 35 35 35 50 50 50 50 50 Output Voltage W W W W W W W W W W 3.3 5.0 12.0 15.0 28.0 3.3 5.0 12.0 15.0 28.0 Input Current(1) No Load Full Load 100 mA 1.49 A 100 mA 1.45 A 100 mA 1.41 A 100 mA 1.40 A 100 mA 1.48 A 100 mA 2.18 A 60 mA 2.15 A 70 mA 2.13 A 70 mA 2.13 A 120 mA 2.15 A Output Current VDC VDC VDC VDC VDC VDC VDC VDC VDC VDC 10.00 7.00 2.90 2.30 1.30 15.00 10.00 4.20 3.33 1.80 A A A A A A A A A A Efficiency(1) Model Number 84% 86% 88% 88% 88% 82% 83% 84% 84% 83% MTC3528S3V3 MTC3528S05 MTC3528S12 MTC3528S15 MTC3528S28 MTC5028S3V3 MTC5028S05 MTC5028S12 MTC5028S15 MTC5028S28 Notes 1. Typical and measured at 28 V input 2. Total of voltage trim and remote sense is +10% max. Mechanical Details MTC35 0.14 0.14 0.17 (3.56) (3.56) (4.50) 0.14 0.10 0.35 (2.54) (3.56) (8.89) 2 x Mounting holes ø 0.102 (2.60) 5 4 3 0.50 (12.7) 7 x ø 0.031 (0.80) 7 8 9 6 0.75 (18.9) ø 0.039 (1.00) pins 1, 2, 9 & 10 0.12 0.11 (3.05) (2.79) 0.10 0.28 (2.54) (7.11) Bottom View 1.10 (27.9) 10 11 2 0.11 (2.79) 1 0.10 (2.54) 0.17 (4.50) 0.12 (3.05) 1.65 (41.80) 1.76 (44.70) 2.00 (50.80) Pin Connections Notes 1. Dimensions are in inches (mm) 2. Tolerance: ±0.02 inches (±0.5 mm) 3. Weight: 0.07 lb (35 g) approx 4. Materials & Finish: Pin - Material: Copper Finish: Nickel plated 2.5 µm Ni and gold plated 0.3 µm Au. Mounting Hole Diameter - 0.10 (2.7) clearance hole Baseplate - Material: Aluminium Case - Material: Non-conductive plastic Pin 1 2 3 4 5 6 Single Output +Vin -Vin Thermal Warning (TW) Synchronization Remote On/Off Case Pin 7 8 9 10 11 Single Output Trim -Sense -Vout +Vout +Sense MTC50 2.28 (58.00) 0.30 (7.62) 0.06 (1.53) 1.45 (36.80) 1.03 (26.20) 0.60 (15.24) 0.50 (12.70) 1.86 (47.20) 4 x Mounting holes ø 0.122 (3.1) 11 10 9 Bottom View 8 7 2 x ø 0.059 (1.50) 0.12 (3.05) 1 2 3 4 5 6 0.14 0.48 (3.56) (12.19) 9 x ø 0.040 (1.02) 0.30 (7.62) 0.18 min. (4.60) 2.00 (50.80) Notes 1. Dimensions are in inches (mm) 2. Tolerance: ±0.02 inches (±0.5 mm) 3. Weight: 0.14 lb (62 g) approx Pin Connections 4. Materials & Finish: Pin - Material: Copper Finish: Nickel plated 2.5 µm Ni and gold plated 0.3 µm Au. Mounting Hole Diameter - 0.126 (3.2) clearance hole Baseplate - Material: Aluminium Case - Material: Non-conductive plastic Pin 1 2 3 4 5 6 Single Output +Vin Remote On/Off Synchronization Thermal Warning (TW) -Vin Case Pin 7 8 9 10 11 Single Output -Vout -Sense Trim +Sense +Vout DCDC MTC35/50 Models and Ratings DCDC MTC75/150 Models and Ratings Output Power Output Voltage Output Current Input Current(1) No Load Full Load Efficiency(1) Model Number 66 W 3.3 VDC 20.00 A 120 mA 2.87 A 82% MTC7528S3V3 75 W 5.0 VDC 15.00 A 130 mA 3.19 A 84% MTC7528S05 75 W 12.0 VDC 6.25 A 60 mA 3.19 A 84% MTC7528S12 75 W 15.0 VDC 5.00 A 40 mA 3.19 A 84% MTC7528S15 75 W 28.0 VDC 2.70 A 75 mA 3.23 A 83% MTC7528S28 75 W ±12.0 VDC ±3.13 A (4) 220 mA 3.23 A 83% MTC7528D12(3) 75 W ±15.0 VDC ±2.50 A (4) 230 mA 3.27 A 82% MTC7528D15(3) 132 W 3.3 VDC 40.00 A 120 mA 5.82 A 81% MTC15028S3V3 150 W 5.0 VDC 30.00 A 147 mA 6.38 A 84% MTC15028S05 150 W 12.0 VDC 12.50 A 70 mA 6.38 A 84% MTC15028S12 150 W 15.0 VDC 10.00 A 75 mA 6.30 A 86% MTC15028S15 150 W 28.0 VDC 5.35 A 170 mA 6.30 A 86% MTC15028S28 150 W ±12.0 VDC ±6.25 A (4) 250 mA 6.38 A 84% MTC15028D12(3) 150 W ±15.0 VDC ±5.00 A (4) 275 mA 6.31 A 85% MTC15028D15(3) Notes 1. Typical and measured at 28 V input 2. Total of voltage trim and remote sense is +10% max. 3. Minimum load of 5% required on one output for ±4% regulation on the other. 4. Each output can deliver 70% of the combined current when other output delivers between 5% and 30%. Mechanical Details 4 x Mounting holes ø 0.126 (3.2) 1.30 (33.0) 11 1.40 (35.56) 0.60 (15.24) 12 10 1 9 2 Bottom View 8* 2.00 (50.80) 3 7 4 6 5 2.40 (61.00) 8 x 0.04 (1.02) 1.90 (48.2) 4 x 0.08 (2.03) 2.28 (57.9) 4-Pl. 0.08 (2.03) 8-Pl. 0.04 (1.02) Notes 1. Dimensions are in inches (mm) 2. Tolerance: ±0.02 inches (±0.5 mm) 3. Weight: 0.28 lb (128 g) approx 4. Materials & Finish: Pin Material: Finish: Mounting Hole Diameter Baseplate Material: Case Material: *On dual output versions, Pin 8 is 0.08 (2.03) 0.50 (12.7) Copper Nickel plated 2.5 µm Ni and gold plated 0.3 µm Au. 0.126 (3.2) clearance hole Aluminium Non-conductive plastic 0.18 min (4.6) Pin 1 2 3 4 5 6 7 8* 9 10 11 12 Pin Connections Single Output Dual Output +Vin +Vin Remote On/Off Remote On/Off Thermal Warning (TW) Thermal Warning (TW) Case Case -Vin -Vin -Vout -Vout -Sense Trim Trim Common +Sense No Pin +Vout +Vout Share No Pin Synchronization Synchronization Remote On/Off This is an active low signal referenced to -Vin. If >3.5V (or open circuit) is applied, the output is on. If <1.8V (or short circuit) is applied, the output is off. If module inhibit is not required, leave the pin floating. Thermal Warning (Tw) This is an open collector signal with emitter connected to –Vin. Transistor is off under normal conditions and is turned on when trip threshold is exceeded (typically 105 ˚C). Thermal Shutdown The output of the module can be optionally turned off under a high temperature condition by connecting the Thermal Warning (TW) pin directly to the Remote On/Off pin. Auto resetting. Synchronization The internal switching frequency can be synchronized to an external source within the range 450 to 550 kHz (MTC75 & 150) or 400 to 500 kHz (MTC35 & 50). If two modules or more are synchronized, they will run at the highest frequency. Connect synchronization pins directly together. Share Up to four modules can be forced to share by connecting the share pins directly together, derate maximum output to 90% of total power. (MTC75 & 150 W only) Output Trim In order to trim the output voltage of the singles up or down, connect the trim resistor either between the trim pin and +sense for trimming-up or between trim pin and -sense for trimming-down. In order to trim the output voltage of the duals up or down, connect the trim resistor either between the trim pin and +Vout for trimming up or between trim pin and -Vout for trimming down. The trimming output voltage range is ±10% on 3V3 output voltage and -20% to +10% rated output voltage on others. See diagram & table below. +Vin +Vout +Vin +Vout +Sense 1 1 2 Com Trim Trim -Sense -Vout -Vin -Vin Trim up, single output +Vin 2 2 -Vout Trim up, dual output +Vin +Vout +Vout +Sense 2 Trim Com 2 3 Trim -Vin -Vin 1 = R Trim-up 2 = R-Load 3 = R Trim-down Trim up resistor= A B C S3V3 9.826 6 5.1 S05 15 5 5.1 Trim down resistor= A 1- MTC35 & 50 S12 43.814 5.1 5.1 -Vout Trim down, dual output Trim down, single output R trim-up = 2 3 -Sense -Vout Vnom -C R trim-down = kΩ Vrequired Vrequired S15 56.056 5.1 5.1 B Vnom S28 81.993 3.825 9.1 A B C S3V3 9.826 6 5.1 S05 15 5 5.1 -C kΩ -1 MTC75 & 150 S12 S15 21.907 28.028 2.55 2.55 5.1 5.1 S28 54.622 2.55 9.1 D12 46.446 2.55 9.1 D15 58.524 2.55 9.1 21-Nov-11 DCDC MTC Series Application Notes