JTK30 Series
www.xppower.com
DC-DC Converter
12 April 16
Trim Up
Ru
Trim Down
Ru
JTK30
Bottom View
6
5
4
1
2
3
JTK30
Bottom View
6
5
4
1
2
3
Application Notes
Models 1% 2% 3% 4% 5% 6% 7% 8% 9% 10%
V
outx0.99
V
outx0.98
V
outx0.97
V
outx0.96
V
outx0.95
V
outx0.94
V
outx0.93
V
outx0.92
V
outx0.91
V
outx0.90
3V3 72.61 k 32.55 k 19.20 k 12.52 k 8.51 k 5.84 k 3.94 k 2.51 k 1.39 k 0.50 k
5V 138.88 k 62.41 k 36.92 k 24.18 k 16.53 k 11.44 k 7.79 k 5.06 k 2.94 k 1.24 k
12V 413.55 k 184.55 k 108.22 k 70.05 k 47.15 k 31.88 k 20.98 k 12.80 k 6.44 k 1.35 k
15V 530.73 k 238.61 k 141.24 k 92.56 k 63.35 k 43.87 k 29.96 k 19.53 k 11.41 k 4.92 k
External Output Trimming
Trim Down Resistor Values (Rd)
Models 1% 2% 3% 4% 5% 6% 7% 8% 9% 10%
Voutx1.01 Voutx1.02 Voutx1.03 Voutx1.04 Voutx1.05 Voutx1.06 Voutx1.07 Voutx1.08 Voutx1.09 Voutx1.10
3V3 60.84 k 27.40 k 16.25 k 10.68 k 7.34 k 5.11 k 3.51 k 2.32 k 1.39 k 0.65 k
5V 106.87 k 47.76 k 28.06 k 18.21 k 12.30 k 8.36 k 5.55 k 3.44 k 1.79 k 0.48 k
12V 351.00 k 157.50 k 93.00 k 60.75 k 41.40 k 28.50 k 19.29 k 12.37 k 7.00 k 2.70 k
15V 422.77 k 189.89 k 112.26 k 73.44 k 50.15 k 34.63 k 23.54 k 15.22 k 8.75 k 3.58 k
Models C1 L1
JTK3024 335 k / 50 V, X7R 1206 0.82 µH
JTK3048 105 k / 50 V, X7R 1206 2.2 µ/H
Trim Up Resistor Values (Ru)
External EMI FilterExternal Filter for Surge and EFT
JTK30
+ Vout
-Vout
+ Vin
-Vin
Load
C1
L1
JTK30
+ Vout
-Vout
+ Vin
-Vin
Load
C1
D1
C1 is 330 µF, 100 V electrolytic capacitor
D1 is 58 V, 3 kW TVS for 24 V input or 120 V, 3 kW TVS for 48 V input
