DTJ20 Series
20 Watts
• Regulated single & dual outputs from 3.3V to 30VDC
• Wide 4:1 input range
DC-DC Converter
xxx Series
• Chassis mount with optional DIN rail clip
• UL62368-1 safety approvals
• EN55032 class A with no external components
• Remote on/off & voltage trim function
• 3kVDC isolation
• -40 °C to +100°C operating temperature
• Full power to 70°C
• 3 year warranty
Dimensions:
DTJ20:
3.00 x 1.24 x 0.77” (76.2 x 31.4 x 19.4 mm)
The DTJ series of chassis mount DC-DC power supplies allows for easy and convenient integration into a variety of industrial and commercial
applications. The DC-DC power solution is constructed using lightweight materials and includes features such as short circuit protection, input
reverse polarity protection and soft start. The wide input range covers nominal voltages of 12V, 24V and 48V.
Models & Ratings
Input Current
(1,5)
Input Voltage
Output Voltage
3.3 V
5.0 V
12.0 V
15.0 V
±5.0 V
±12.0 V
±15.0 V
3.3 V
5.0 V
12.0 V
15.0 V
±5.0 V
±12.0 V
±15.0 V
Output Current
5.50
4.00
1.67
1.33
±2.00
±0.835
±0.665
5.50
4.00
1.67
1.33
±2.00
±0.835
±0.665
A
A
A
A
A
A
A
A
A
A
A
A
A
A
No Load
10 mA
10 mA
10 mA
15 mA
10 mA
15 mA
15 mA
8 mA
8 mA
8 mA
8 mA
8 mA
8 mA
10 mA
Full Load
859
947
954
955
980
954
950
427
468
469
462
485
469
464
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
Maximum
Capacitive Load
(6)
10000 µF
6800 µF
1000 µF
680 µF
±2200 µF
±470 µF
±330 µF
10000 µF
6800 µF
1000 µF
680 µF
±2200 µF
±470 µF
±330 µF
Efficiency
(2)
88%
88%
87%
87%
85%
87%
87%
88%
89%
89%
90%
86%
89%
89%
Model Number
(3,4)
DTJ2024S3V3
DTJ2024S05
DTJ2024S12
DTJ2024S15
DTJ2024D05
DTJ2024D12
DTJ2024D15
DTJ2048S3V3
DTJ2048S05
DTJ2048S12
DTJ2048S15
DTJ2048D05
DTJ2048D12
DTJ2048D15
24V
(9-36V)
48V
(18-75V)
Notes
1. Input current measured at nominal input voltage.
2. Typical values.
3. For optional version fitted with DIN Clip add suffix ‘-D’ e.g. DTJ2024S12-D.
4. For optional factory fitted heatsink add suffix ‘-HK’ e.g. DTJ2024S12-HK or
DTJ2024S12-HKD with DIN clip.
5. Input current is typically 2.0mA at nominal input voltage when output is remotely
turned off.
6. Per output.
1
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DTJ20 Series
Input
Characteristic
Input Voltage Range
Input Current
Inrush Current
Reflected Ripple Current
Input Filter
Undervoltage Lockout
Input Surge
Reverse Polarity
Remote On/Off
(positive logic)
Integrated protection
On: Logic High (3.0-12 V) or open circuit pin 1.
Off: Logic Low (<1.2 V) or short pin 2 to pin 1.
Idle Current: 2 mA, typical
Pi type
On at >8.8V Off <8.0 V
On at >17.5V Off <16.0 V
50
100
35/45
20
Minimum
9
18
Typical
Maximum
36
75
DC-DC Converter
Units
VDC
VDC
A
mAp-p
Notes & Conditions
12 V & 24 V nominal input voltage
24 V & 48 V nominal input voltage
See Models and Ratings table
DTJ2024 / DTJ2048 series
Measured with 12µH and 47µF source values
DTJ2024 series
DTJ2048 series
VDC
VDC
DTJ2024 series for 100 ms
DTJ2048 series for 100 ms
Output
Characteristic
Output Voltage
Output Voltage Trim
Initial Set Accuracy
Minimum Load
Start Up Delay
Line Regulation
Load Regulation
Cross Regulation
Transient Response
Ripple & Noise
Short Circuit Protection
Overload Protection
Overvoltage Protection
Temperature Coefficient
Minimum
3V3
Typical
Maximum
30
±10
±3
30
±0.5
±0.5/±1.0
±5
±8/±5
75
60
170
140
±0.02
Units
V
%
%
A
ms
%
%
%
% deviation
mV pk-pk
Notes & Conditions
See models and ratings table
See application notes
At full load
No minimum load required
At nominal input voltage
From minimum to maximum input voltage
0 - 100% load. single/dual with balanced load
On dual output models with one output at 25% load and the
other varied from 10% to 100% load.
3.3V single output / All other models. Recovery to within 1%
in <250 µs for a 25% load change
Single output. 20MHz bandwidth with 10µF/25V MLCC
Dual output. 20MHz bandwidth with 10µF/25V MLCC
Continuous. Trip (hiccup mode), auto recovery
Trip & restart (hiccup mode)
Internal voltage clamp
0
%
%Vout
%/ ˚C
General
Characteristic
Efficiency
Isolation
Isolation Resistance
Input to Output Capacitance
Switching Frequency
Mean Time Between Failure
Case Material
Weight
Minimum
3000
1000
Typical
88
Maximum
Units
Notes & Conditions
%
See Models and Ratings table
VDC
For 60 s functional
MΩ
2000
pF
270/330
kHz
3.3 & 5V single output / All other models
380
kHrs
MIL-HDBK-217F, +25 °C GB
Non conductive, black plastic UL94V-0. Power module copper case with epoxy potting UL94V-0
0.099 (45.0)
lb (g)
DIN rail option add 0.011lbs (5.0g)
Heatsink option add 0.014lbs (6.5g)
Environmental
Characteristic
Operating Temperature
Storage Temperature
Case Temperature
Thermal Impendance to Air
Humidity
Cooling
Altitude
5000
m
12
5
95
Minimum
-40
-55
Typical
Maximum
+100
+125
+105
Units
°C
°C
°C
°C/W
%RH
With heatsink 11°C/W
Non-condensing
Natural convection, 20 LFM
Operating
Notes & Conditions
See derating curves
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2
DTJ20 Series
EMC: Emissions
Phenomenon
Conducted
Radiated
Standard
EN55032
EN55032
DC-DC Converter
Test Level
Class A
Class A
Notes & Conditions
EMC: Immunity
Phenomenon
Immunity
ESD Immunity
Radiated Immunity
EFT/Burst
Surges
Conducted Immunity
Magnetic Fields
Standard
EN55035
EN61000-4-2
EN61000-4-3
EN61000-4-4
EN61000-4-5
EN61000-4-6
EN61000-4-8
±6 kV Contact, ±8 kV Air
10 V/m
±2 kV
±2 kV
10 Vrms
100 A/m
A
A
A
A
A
A
Requires additional 330µF, 100V capacitor across
input terminals
Test Level
Criteria
Notes & Conditions
Safety Approvals
Safety Agency
UL
Safety Standard
UL60950-1/62368-1
Notes & Conditions
Application Notes
Derating Curve for Convection Cooling
Without Heatsink
With Heatsink
100%
75%
50%
25%
-40
-20
0
20
40
60
61
100%
All other outputs
75%
50%
25%
-40
-20
0
20
40
60
80
All other outputs
Output Power
Ambient Temperature
66
80
100
120
Output Power
Dual 5V model
Ambient Temperature
67
72
100
120
Dual 5V model
External Output Trimming
4
5
Rtrim-up
5
6
Rtrim-down
Output can be externally trimmed by using the method as below, (single output models only)
Trim Down Resistor Values
Model
3V3
5V
12V
15V
1%
309.0 k
119.9 k
345.0 k
174.4 k
2%
3%
165.4 k 105.6 k
77.70 k 50.50 k
138.1 k 79.90 k
91.10 k 56.60 k
4%
72.9 k
35.2 k
51.5 k
37.7 k
5%
52.3 k
25.3 k
34.6 k
25.8 k
6%
38.0 k
18.4 k
23.4 k
17.6 k
7%
27.6 k
13.4 k
15.5 k
11.6 k
8%
19.7 k
9.50 k
9.50 k
7.00 k
9%
13.5 k
6.40 k
4.90 k
3.50 k
10%
8.40 k
3.90 k
1.26 k
0.55 k
Trim Up Resistor Values
Model
3V3
5V
12V
15V
1%
537.7 k
635.2 k
367.4 k
661.5 k
2%
177.1 k
170.0 k
179.6 k
231.3 k
3%
96.40 k
92.80 k
113.6 k
134.0 k
4%
60.8 k
61.1 k
79.9 k
91.0 k
5%
40.8 k
43.8 k
59.5 k
66.8 k
6%
27.9 k
32.9 k
45.8 k
51.3 k
7%
19.0 k
25.4 k
35.9 k
40.4 k
8%
12.4 k
20.0 k
28.5 k
32.5 k
9%
7.30 k
15.8 k
22.7 k
26.4 k
10%
3.40 k
12.5 k
18.1 k
21.5 k
3
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DTJ20 Series
Mechanical Details
Chassis Mount
1.24
(31.4)
3 . 3
DC-DC Converter
LED
(output indicator)
Mounting holes
0.129 (3.3) 4 places
4
5
6
3 . 3
0.92
1
(23.4)
2
3
2.68 (68.2)
3.00 (76.2)
Ctrl
-Input +Input
+Output
Trim
-Output
0.77
(19.4)
76.2 (3.00)
0.32
(8.1)
Chassis Mount with Heatsink -HK
Ctrl
-Input +Input
0.94
(24.0)
0.32
(8.1)
3.00 (76.2)
+Output
Trim
-Output
LED
(output indicator)
DIN Rail -D
0.69
2
(17.5)
3
1
4
5
1.24
6
(31.4)
0.10 (2.5)
3.00 (76.2)
Ctrl
-Input +Input
+Output
-Output
Trim
1.00
(25.4)
DIN Rail with Heatsink -HKD
0.10
(2.5)
0.06 (1.5)
0.24
(6.0)
Ctrl
-Input +Input
1.18
(30)
+Output
Trim
-Output
0.10
(2.5)
0.06 (1.5)
0.24
(6.0)
6. Case tolerance: ±0.02 (±0.5)
7. Mounting rail: TS35
8. Heatsink is aluminium black anodic
9. Heatsink weight 0.014 (6.5g)
Pin
1
2
3
4
5
6
Pin Connections
Single Output
Dual Output
Remote On/Off
Remote On/Off
-Vin
-Vin
+Vin
+Vin
-Vout
-Vout
Trim
Common
+Vout
+Vout
Notes
1. All dimensions are in inches (mm)
2. Weight: 0.099 lbs (45 g) approx
3. Weight for -D version: 0.121 lbs (55 g) approx
4. Terminal wire size 24 ~12 AWG
5. Screw terminal torque 7 lb-in (0.79 Nm)
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06 Feb 20
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