25TMOW_1.5 series
25W - Single Output - Wide Input - Isolated & Regulated
DC-DC Converter
DC-DC Converter
25 Watt
Wide 2:1 input voltage range
High efficiency up to 88%
Short circuit protection (SCP)
Isolation voltage: 1.5kVDC
Over-current, over-voltage,
over-temperature protection
Input under-voltage lockout
RoHS compliant
Operating temperature range:
The 25TMOW_1.5 series are isolated 25W DC/DC converters with 2:1
input voltage. They feature efficiency up to 88%, 1500VDC isolation,
operating temperature of -40°C to +85°C, input under-voltage protec-
tion, output over-voltage, output over-current, output short circuit
protection and meets IEC60950-1.
-40°C to +85°C
Fixed switching frequency
Remote on/off negative logic
International standard pin-out
Monotonic startup into
pre-biased loads
Adjustable output voltage
range
IEC/UL/EN60950-1 approved
They are widely applied in optical networking equipment, wireless base
stations, microwave radio communications, telecom and data equip-
ment applications.
UL-60950-1 (E347551)
Common specifications
Short circuit protection:
Cooling:
Output specifications
Hiccup, continuous, self-recovery
Free air convection
-40°C~+85°C
Item
Test condition
Min
Typ
5
Max
5.05
Units
V
Voltage set point
25°C, Io=Io (max)
4.95
Operation temperature range:
Storage temperature range:
Storage humidity range:
Thermal stability time:
FIT:
Line regulation*
Vin(min to Vin(max)
Io= Io(max),
Vo=Vo(nom)
0.1
%Vo
%Vo
-55°C~+125°C
90% MAX
Load regulation*
Voltage precision
Vin=Vin(nom)
0.125
30mins
Io=0 to Io (max)
312.5; 109/MTBF
At 50% load
1
%Vo
%Vo
Vibration:
IEC60068-2-6: 10~500Hz sweep, 0.75mm
excursion, 10g acceleration, 10minutes
in each 3 perpendicular directions
Voltage adjust-
ment range
-20
10
Remote sense
Vsense = Vout - Vload,
sense connected at load
10
%Vo
A
Shock:
Safety:
IEC 60068-2-27:200g acceleration, dura-
tion 3ms, 6 drops in each 3 perpendicu-
lar directions
Current Limit
5.5
0
7.5
Compliant to IEC60950-1, UL60950-1,
EN60950-1 and GB4943
External load
capacitance
Full resistive load,
low ESR
2200 µF
Switching frequency:
Transportation:
450KHz TYP, fixed frequency
ETS300019-1-2
Temperature
coefficient
At all outputs
200
200
ppm/°C
Dynamic response 25%-50%-25%,50%-
recovery time 75%-50% Io(nom)
100
75
µS
MTBF
3,200,000 hours
(Telcordia SR332, ground fixed, 40°C):
Dynamic response 50%-75%-50%,di/
dt=2.5A/µS
Weight:
6.5g
• Recovery time
• Overshoot
µs
mV
150
Protection specifications
Ripple and noise**
50
10
mVp-p
ms
Item
Test condition
Min
Typ
Max
Units
Turn-on delay time Time from instant at
which Vin=Vin (Turn-
50
50
Input under voltage
lockout
• Turn-on
• Turn-off
• Hysteresis
33
31
34
33
1
36
35
V
V
V
on) until Vo=10% of
Vo (nom)
Short circuit current
Hiccup
0.3
yes
A
Turn-on rise time
Time for Vo to rise
from 10% of Vo (nom)
to 90% of Vo (nom)
10
ms
Over current
protection
Hiccup mode,
automatic recovery
Over voltage
protection
Under the converter’s
maximum allowable
output power. Hiccup
mode, minimum
6
7.2
V
*
Regulation specifications describe the deviation as the input line voltage or output
load current is varied from a nominal midpoint value to either extreme (50% load).
** Output noise may be further reduced by installing an external filter. See
Ripple&Noise test setup. Use only as much output filtering as needed and no
more. Larger caps (especially low-ESR ceramic types) may slow transient response
or degrade dynamic performance. Thoroughly test your application with all
components installed.
load of 20%Io max
Over temperature
protection
Automatic recovery
See OTP section
115
5
°C
°C
Over Temperature
Protection Hysteresis See OTP section
Automatic recovery
Remote control specifications
Item
Test condition
Min
-0.7
2.4
Typ
1
Max
1.2
Units
V
Logic low voltage
Logic high voltage
Control current
Example:
25TMOW_4805S1.5
25 = 25Watt; T = SMT; M = Miniature; O = Open frame; W = wide
input (2:1); 36-75Vin; 5Vout; S = single output; 1.5 = 1500VDC
14
V
mA
Page 1 of 6
GAPTEC-Electronic GmbH & Co. KG
sales@gaptec-electronic.com – www.gaptec-electronic.com
25TMOW_1.5 – Rev. 2020-1.0
Specifications subject to change without notice.
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