DC-DC
Specification
15/20 Watts
• Very High Power Density
• Wide 4:1 Input Range
• Operating Temperature -40 °C to +100 °C
• Single & Dual Outputs
• 1600 VDC Isolation
• High Efficiency - up to 89%
• 3 Year Warranty
JTK Series
Input
Input Voltage Range • 24 V (9-36 VDC)
48 V (18-75 VDC)
Input Current • See table
Input Filter • Pi network
Input Reflected • JTK15: 20 mA pk-pk
Ripple Current JTK20: 30 mA pk-pk through 12 µH
inductor and 47 µF capacitor,
5 Hz to 20 MHz
Input Surge • 24 V models: 50 VDC for 100 ms
• 48 V models: 100 VDC for 100 ms
Output
Output Voltage • See table
Output Trim • ±10% max on single output
Minimum Load • No minimum load required
Initial Set Accuracy • ±1% max
Start Up Delay • 20 ms typical
Line Regulation • JTK15: ±0.2% max, JTK20: ±0.5% max
Load Regulation • ±0.5% max single, ±1.0% max dual
Cross Regulation • ±5% on dual output models, (see note 2)
Transient Response • <3% max deviation, recovery to within 1%
in 250 µs for a 25% load change
Ripple & Noise • 100 mV pk-pk, 20 MHz bandwidth,
(see note 3)
Overload Protection • JTK15: 170% of full load typical,
JTK20: 150% of full load typical
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
Short Circuit Protection • Trip & restart (hiccup) with auto recovery
Maximum Capacitive • See table
Load
Temperature • ±0.02%/°C max
Coefficient
Remote On/Off • On >3.0 VDC or open circuit
Off <1.2 VDC or short circuit pins 2 & 3
xppower.com
General
Efficiency • See table
Isolation • 1600 VDC Input to Output
1600 VDC Input to Case
1600 VDC Output to Case
Isolation Capacitance • JTK15: 1200 pF max
JTK20: 1000 pF max
Switching Frequency • JTK15: 375 kHz typical
JTK20: 330 kHz typical
Power Density • JTK15: 38.4 W/in
3
,
JTK20: 51.3 W/in
3
MTBF • >560 KHrs to MIL-STD-217F at 25 °C, GB
Environmental
Operating Temperature • -40 °C to +100 °C, JTK15: derate
from 100% load at +65 °C to no load at
+100 °C, JTK20: derate from 100% load at
+55 °C to no load at +100 °C
Case Temperature • +105 °C max
Storage Temperature • -40 °C to +125 °C
Humidity • Up to 90%, non-condensing
Cooling • Natural convection
EMC
Emissions • EN55022, Level A conducted & radiated
with external components -
see applications note
ESD Immunity • EN61000-4-2, Level 2 Perf Criteria A
Radiated Immunity • EN61000-4-3, 3 V/m Perf Criteria A
EFT/Burst • EN61000-4-4, Level 3 Perf Criteria A*
Conducted Immunity • EN61000-4-6, 3 V rms Perf Criteria A
Magnetic Fields • EN61000-4-8, 1 A/m Perf Criteria A
*External input capacitor required 220 µF / 100 V.
