0
50
100
150
200
250
300
0
20
40
60
80
100
0
200
400
600
800
1000
1200
1400
1600
0
20
40
60
80
100
Hold-up
time[ms]
Hold-up
time[ms]
load factor[%]
load factor[%]
Fig.2.3 TUHS5 hold-up time(AC100V) Fig.2.4 TUHS5 hold-up time(AC200V)
0
50
100
150
200
250
300
0
20
40
60
80
100
0
200
400
600
800
1000
1200
1400
1600
0
20
40
60
80
100
Hold-up
time[ms]
Hold-up
time[ms]
load factor[%]
load factor[%]
Fig.2.5 TUHS10 hold-up time(AC100V) Fig.2.6 TUHS10 hold-up time(AC200V)
0
50
100
150
200
250
300
0
20
40
60
80
100
0
200
400
600
800
1000
1200
1400
1600
0
20
40
60
80
100
Hold-up
time[ms]
Hold-up
time[ms]
load factor[%
l
]
oad factor[%]
33
47
68
150
68
150
Fig.2.7 TUHS15 hold-up time(AC100V) Fig.2.8 TUHS15 hold-up time(AC200V)
0
50
100
150
200
250
300
0
20
40
60
80
100
0
200
400
600
800
1000
1200
1400
1600
0
20
40
60
80
100
Hold-up
time[ms]
Hold-up
time[ms]
load factor[%]
load factor[%]
Fig.2.9 TUHS25 hold-up time(AC100V) Fig.2.10 TUHS25 hold-up time(AC200V)
(4) R1: Inrush current limiting resistor
¡
Connect resistor R1 between AC input and power supply to limit
inrush current to 50A(TUHS3/5/10/15) and 60A(TUHS25).
Select a resistor which has enough permissible current capability.
¡
The power thermistors are heat-generating components. Pay
attention to the rated operating temperature when using the power
thermistors.
¡
When the power turns ON/OFF repeatedly within a short term,
please keep enough interval to cool down the power supply before
turning it on again.
¡
In this case, recommend using thermistor with thermal resistor in
parallel or inrush current limiting circuit by triac.
(5) SK1: Surge Protective Device
¡
Connect a surge protective device to improve Surge immunity.
(6) D1: Reverse Input Voltage Protection(DC input)
¡
Avoid the reverse polarity input voltage. It cause the power supply
failure. It is possible to protect the unit from the reverse input volt-
age by installing an external diode.
R1
+Vout
-Vout
+BC
AC1
AC2
-BC
Load
F1 D1
+
Cbc
Fig.2.11 Reverse input voltage protection
2.2 Wiring output pin
(1) Co:Output capacitor
¡
In the TUHS series, the output capacitor is basically unnecessary.
Reduce the ripple voltage by connecting the output capacitor.
+Vout
-Vout
Load
Co
Fig.2.12 Connecting Example of an External
Capacitor to the Output Side
¡
Install an external capacitor Co bVOUT and -VOUT pins
for stable operation of the power supply.
Recommended capacitance of Co is shown in Table 2.3.
¡
If output current decreases rapidly, output voltage rises transiently
and the overvoltage protection circuit may operate.
In this case, please install a capacitor Co.
Table 2.3 Recomemended capacitance Co
No. output
voltage TUHS3
TUHS5 TUHS10 TUHS15 TUHS25
1
5V
0 - 100μF 0 - 100μF 0 - 330μF
-
0 - 1000μF
2
12V
0 - 47μF 0 - 47μF 0 - 150μF 0 - 150μF 0 - 470μF
3
15V
0 - 47μF 0 - 47μF 0 - 120μF 0 - 120μF 0 - 390μF
4
24V
0 - 22μF 0 - 22μF 0 - 68μF 0 - 68μF 0 - 220μF
AC-DC Power Supplies PCB Mount Type
Instruction Manual
TUHS-17
June 26, 2020
