PTK25 Series DC/DC Converters
A CUI INC COMPANY
ISOLATED, 25W, SINGLE, DUAL & TRIPLE OUTPUT
Key Features
Industry standard pin out
Wide 2 : 1 input range
Fully isolated
Output voltage trimmable
Output On/Off control
Over-current protection
Over-voltage protection
Six-sided EMI shielding
Constant switching frequency
High efficiency
Compact size 2.0" x 2.0" x 0.5"
3 year warranty
Model Configurations
Output
Power
(Max.)
20.0W
25.0W
24.0W
24.0W
25.0W
24.0W
24.0W
20.0W
26.0W
20.0W
25.0W
20.0W
25.0W
24.0W
24.0W
25.0W
24.0W
24.0W
20.0W
26.0W
20.0W
25.0W
Input
Voltage
18-36V
18-36V
18-36V
18-36V
18-36V
18-36V
18-36V
18-36V
18-36V
18-36V
18-36V
36-72V
36-72V
36-72V
36-72V
36-72V
36-72V
36-72V
36-72V
36-72V
36-72V
36-72V
Output
Voltage
3.3V
5V
12V
15V
±5V
±12V
±15V
3.3V/±12V
5V/±12V
3.3V/±15V
5V/±15V
3.3V
5V
12V
15V
±5V
±12V
±15V
3.3V/±12V
5V/±12V
3.3V/±15V
5V/±15V
Output
Current
(Min.)
0A
0A
0A
0A
0A
0A
0A
0A
0A
0A
0A
0A
0A
0A
0A
0A
0A
0A
0A
0A
0A
0A
Output
Current
(Max.)
6.0A
5.0A
2.0A
1.6A
2.5A
1.0A
0.8A
3.5A/0.35A
3.5A/0.35A
3.5A/0.28A
3.5A/0.25A
6.0A
5.0A
2.0A
1.6A
2.5A
1.0A
0.8A
3.5A/0.35A
3.5A/0.35A
3.5A/0.28A
3.5A/0.25A
Efficiency
(Typ.)
78%
79%
81%
81%
79%
81%
81%
77%
77%
77%
78%
78%
79%
83%
83%
80%
82%
82%
77%
78%
77%
79%
Line
Reg.
±0.25%
±0.25%
±0.25%
±0.25%
±0.25%
±0.25%
±0.25%
±0.25%
±0.25%
±0.25%
±0.25%
±0.25%
±0.25%
±0.25%
±0.25%
±0.25%
±0.25%
±0.25%
±0.25%
±0.25%
±0.25%
±0.25%
Load
Reg.
±0.25%
±0.25%
±0.25%
±0.25%
±0.25%
±0.25%
±0.25%
±0.25%
±0.25%
±0.25%
±0.25%
±0.25%
±0.25%
±0.25%
±0.25%
±0.25%
±0.25%
±0.25%
±0.25%
±0.25%
±0.25%
±0.25%
Model Number
1
PTK25-D24-S3
PTK25-D24-S5
PTK25-D24-S12
PTK25-D24-S15
PTK25-D24-D5
PTK25-D24-D12
PTK25-D24-D15
PTK25-D24-T312
PTK25-D24-T512
PTK25-D24-T315
PTK25-D24-T515
PTK25-D48-S3
PTK25-D48-S5
PTK25-D48-S12
PTK25-D48-S15
PTK25-D48-D5
PTK25-D48-D12
PTK25-D48-D15
PTK25-D48-T312
PTK25-D48-T512
PTK25-D48-T315
PTK25-D48-T515
Note 1.
All models are also available in an extended temperature range of
-40º ~ 85º C. For these models,
append "M" to the model number,
e.g. PTK25-D48-S5M.
V-INFINITY LLC, 9615 SW Allen Blvd., Suite 103, Beaverton, OR 97005
1-866-372-1258
www.v-infinity.com
PTK25 Series DC/DC Converters
A CUI INC COMPANY
ISOLATED, 25W, SINGLE, DUAL & TRIPLE OUTPUT
Input
Parameter
Input voltage range
Remote On/Off control
Switching frequency
Output turn-on
Output turn-off
Constant
Conditions/Description
Min
18
36
2.5V
-0.7V
Nom
24
48
(open)
(short)
300
Max
36
72
7.0V
0.8V
Units
VDC
VDC
KHz
Output
Parameter
Output trim range
Set point accuracy
Line regulation
2
(Low line to high line)
Conditions/Description
With external trim resistors
Single-output models
Dual-output models
Triple: main output (Vout)
auxillary outputs (+Vaux / -Vaux)
Single output models
Dual output models
Triple: main output (Vout)
Aux. outputs (Main output varies from
10% - 100% load)
Min
-10%
-2%
-0.25%
-0.5%
-0.25%
-5%
-0.25%
-2.5%
-0.25%
-5%
0.0
20 MHz bandwidth
1.0%Vout
Nom
Max
+10%
+2%
+0.25%
+0.5%
+0.25%
+5%
+0.25%
+2.5%
+0.25%
+5%
Amps
mVpp
Units
Load regulation
2
Minimum load
Ripple & noise
Note 2
. To maintain specified regulation, it is required to have a minimum 10% load on the main output, and a 20% load
on each auxillary output. Under no load conditions, operations will not damage the devices, but all specified
regulation may not be met.
Protection
Parameter
Over-current
Over-voltage
Conditions/Description
Continuous auto recovery
3
Internal clamping
3
Min
105%
115%
Nom
Max
135%
140%
Units
Note 3.
Continuous operation in a protected state may compromise long-term reliability.
General
Parameter
Efficiency
Dielectric withstand
Insulation resistance
Agency standards
Case material
Material flammability
Weight
MTBF
Operating temperature
Storage temperature
Humidity
MIL-HDBK-217F
Regular models
Extended temperature models
Operating (non-condensing)
Conditions/Description
Typical at full load
Input/case, Input/output, Output/case
at 500 VDC
Designed to meet, UL1950, EN60950, CISPR22, CE
Min
77%
500
100M
Zn
94 V-0
80
(2.82)
450k
-20
-40
-40
5%
+71
+85
+105
95%
grams
(ounces)
hours
°C
°C
°C
RH
Nom
Max
83%
VAC
Ohms
Units
V-INFINITY LLC, 9615 SW Allen Blvd., Suite 103, Beaverton, OR 97005
1-866-372-1258
www.v-infinity.com
PTK25 Series DC/DC Converters
A CUI INC COMPANY
ISOLATED, 25W, SINGLE, DUAL & TRIPLE OUTPUT
Trim Method
+Vout
R1
External Trim Resistors
Model
Single
Output
Models
Dual
Output
Models
Output
Voltage
5V
12V
15V
+ 5V(10V)
+ 12V(2 4V)
+ 15V(30V)
VR
1K
1K
1K
1K
5K
5K
R1
1.0K
3.9K
5.6K
3.3K
9.0K
20.0K
R2
680
680
750
680
820
910
A CUI STACK COMPANY
Output
Terminals
-Vout
Trim
VR
R2
Load
Dimensions
All dimensions are in inches (mm).
Pin Assignments
Single Output
1.
2.
3.
4.
5.
6.
7.
8.
+Vin
-Vin
No pin
CNT
NC
+Vout
-Vout
Trim
Dual Output
1.
2.
3.
4.
5.
6.
7.
8.
+Vin
-Vin
No pin
CNT
+Vout
Com
-Vout
Trim
Triple Output
1.
2.
3.
4.
5.
6.
7.
8.
+Vin
-Vin
No pin
CNT
+Vaux
+Vout
Com
-Vaux
2.0
(50.8)
CL
4
2
1
8
7
2.0
(50.8)
6
5
0.1
(2.54)
2.0
(50.8)
1.8
(45.72)
0.4
(10.16)
TOP VIEW
Label
2.0
(50.8)
0.5
(12.7)
0.90
(22.86)
0.2
(5.08)
1
2
3
4
5
0.4
(10.16)
6
0.4
(10.16)
7
8
0.4
(10.16)
0.4
(10.16)
0.04
(1.0)
1.8
(45.72)
2.0
(50.8)
0.1
(2.54)
BOTTOM VIEW
7- 0.05(1.3)
© V-INFINITY ®
The information and specifications herein are believed to be correct at time of publication. However, V-INFINITY LLC ac cepts no responsibility for
consequences arising from printing errors or inaccuracies. Specifications are subject to change without notice. No rights under any patent
accompany the sale of any such product(s) or information contained herein.
V-INFINITY LLC, 9615 SW Allen Blvd., Suite 103, Beaverton, OR 97005
1-866-372-1258
www.v-infinity.com
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