DCDC 20 Watts JTM Series xppower.com • Wide 4:1 Input Range • Single & Dual Outputs • 40 °C to +105 °C Operating Temperature • Overvoltage & Overcurrent Protection • Remote On/Off • 1600 VDC Isolation • 3 Year Warranty Specification Input Input Voltage Range Input Current Undervoltage Lockout Input Surge General • 24 V (9-36 VDC) 48 V (18-75 VDC) • See table • 24 V models: ON 8.6 V, OFF 7.9 V typical 48 V models: ON 17.8 V, OFF 16 V typical • 24 V models 50 VDC for 100 ms 48 V models 100 VDC for 100 ms Output Output Voltage Output Voltage Trim Minimum Load Line Regulation Load Regulation • • • • • Cross Regulation Setpoint Accuracy Start Up Time Ripple & Noise • • • • Transient Response • See table ±10%, single outputs No minimum load required ±0.5% max Single output models: ±0.5% max Dual output models: ±1% max balanced outputs ±5% for dual outputs (see note 2) ±1% 20 ms typical 75 mV pk-pk at 20 MHz bandwidth, (see note 3) 3% max deviation, recovery to within 1% in <250 µs for a 25% load change 0.02%/°C Temperature • Coefficient Overvoltage Protection • 3.3 V models: 3.9 V typical 5 V models: 6.2 V typical 12 V models: 15 V typical 15 V models: 18 V typical ±5 V models: ±6.2 V typical ±12 V models: ±15 V typical ±15 V models: ±18 V typical Overload Protection • >120% of full load typical Short Circuit Protection • Trip & restart (hiccup mode), auto recovery Remote On/Off • On = Logic High (3.0-12.0 V) or Open Off = Logic Low (<1.2 V) or short pin 2 to 6 (see note 4) Efficiency Isolation Switching Frequency Power Density MTBF • See table • 1600 VDC Input to Output 1600 VDC Input to Case 1600 VDC Output to Case • 330 kHz typical • 25 W/in3 • 560 kHrs min to MIL-HDBK-217F at 25 °C, GB Environmental Operating Temperature Case Temperature Cooling Operating Humidity Storage Temperature • • • • • -40 °C to +105 °C, see derating curve +105 °C max Convection-cooled 5-95% RH, non-condensing -40 °C to +125 °C EMC & Safety Emissions ESD Immunity Radiated Immunity EFT/Burst Surge Conducted Immunity Magnetic Field • EN55022, class A conducted & radiated with external components - see application notes • EN61000-4-2, level 3 Perf Criteria A • EN61000-4-3 10 V/m, Perf Criteria A • EN61000-4-4 level 3, Perf Criteria B* • EN61000-4-5 level 2, Perf Criteria B* • EN61000-4-6 10 V/rms,Perf Criteria A • EN61000-4-8 1 A/m, Perf Criteria A *External input capacitor required 220 µF/100 V Input Voltage Output Voltage 9-36 VDC 18-75 VDC Input Current(1) No Load Full Load Output Current Maximum Capacitive Load Efficiency Model Number 3.3 VDC 5.500 A 50 mA 879 mA 10,000 µF 89% JTM2024S3V3 5.0 VDC 4.000 A 50 mA 957 mA 6,800 µF 91% JTM2024S05 12.0 VDC 1.670 A 22 mA 980 mA 1,000 µF 89% JTM2024S12 15.0 VDC 1.330 A 22 mA 968 mA 680 µF 89% JTM2024S15 ±5.0 VDC ±2.000 A 65 mA 969 mA ±2,200 µF 89% JTM2024D05 ±12.0 VDC ±0.835 A 25 mA 980 mA ±470 µF 88% JTM2024D12 ±15.0 VDC ±0.665 A 25 mA 980 mA ±330 µF 89% JTM2024D15 3.3 VDC 5.500 A 30 mA 440 mA 10,000 µF 89% JTM2048S3V3 5.0 VDC 4.000 A 30 mA 473 mA 6,800 µF 91% JTM2048S05 12.0 VDC 1.670 A 15 mA 484 mA 1,000 µF 89% JTM2048S12 15.0 VDC 1.330 A 15 mA 484 mA 680 µF 89% JTM2048S15 ±5.0 VDC ±2.000 A 40 mA 484 mA ±2,200 µF 89% JTM2048D05 ±12.0 VDC ±0.835 A 15 mA 490 mA ±470 µF 88% JTM2048D12 ±15.0 VDC ±0.665 A 15 mA 490 mA ±330 µF 89% JTM2048D15 Notes 1. 2. 3. 4. 5. Input current specified at nominal 24 V or 48 V input. Cross regulation is ±5% when one output is at 100% and the other is varied between 25% and 100%. Measured with 1 µF ceramic capacitor across output rails. Non-standard versions can have Remote On/Off function and pin removed. Contact sales for details. For heatsink option add ‘-HK’ to the end of the part number. Mechanical Details Optional heatsink (-HK) 1.00 (25.4) 0.40 (10.1) 0.10 (2.5) 0.10 (2.5) 0.40 (10.1) DIA. 0.04 (1.0) 0.60 (15.2) 3 2.00 (50.8) 0.40 (10.1) 0.80 (20.3) 4 0.64 (16.3) 0.02 (0.5) 5 2.00 (50.8) Bottom View 1 2 Pin Connections Single Dual +Vin +Vin -Vin -Vin +Vout +Vout Trim Com -Vout -Vout Remote On/Off Remote On/Off Pin 1 2 3 4 5 6 6 Notes 1. All dimensions are in inches (mm). 2. Weight: 0.07 lbs (30 g) 3. Pin diameter: 0.04 ±0.002 (1.0 ±0.05) 4. Pin pitch tolerance: ±0.014 (±0.35) 5. Case tolerance: ±0.02 (±0.5) 6. Stand-off tolerance: ±0.004 (±0.1) 0.60 (15.2) 0.40 (10.1) 0.20 (5.1) 0.20 (5.1) min 0.40 (10.1) Thermal Pad Application Notes Derating Curve External Output Trim 100 without heat-sink with heat-sink Load (%) 80 60 TRIM UP TRIM DOWN 5 20 0 -40 Output can be externally trimmed using this method. 3 Contact sales for details. S.O.A. 40 4 4 Input Filter 0 Ambient Temperature (ºC) 66 72 85 105 + +Vin Remote On/Off Control 2.2 µF Standard ROF logic is positive. Output On 3.0-12.0 VDC or open circuit Output Off <1.2 VDC or short circuit pins 2 & 6 - +Vout 12 µH 2.2 µF DC/DC Converter -Vin LOAD -Vout 18-Jul-13 DCDC JTM20 Models and Ratings