TDK-Lambda PH Series, Manual, Page: 37 / 58

PH
50
-
150, 75
-
300F
PH
B-335
・All specifications are subject to change without notice.
＋V
R2 VR R1
＋
−V
＋
Load
−
TRM
＋V
＋S
R2 VR R1
＋
−V
−S
＋
Load
−
TRM
図２−２ 外付け抵抗の接続例１
（±S端子無し）
図２−３ 外付け抵抗の接続例２
（±S端子有）
Figure2-2: Connection Example of External
Resistor Network #1
(no ±S Terminal, PH50S/PH75S)
＋V
＋
＋S
−V
＋
R2 VR R1
−
−S
TRM
LOAD
Figure2-3: Connection Example of External
Resistor Network #2
(with ±S Terminal)
In the same way, remote sensing wires can be connected
to load.
〈Example 3: Values and Method of Resistor and variable
Resistor Networks〉
For S type model with remote sensing terminal, the follow-
ing method can be used.
Variable resistor is attached as remote programming resis-
tor, and the output can be remotely programmed. Ratio of
remote programming resistor is basically 1V/kΩ.
3V 12V 15V 24V 28V
R1 1.5k 30k 33k 68k 68k
VR 1k 5k 10k 10k 20k
5V
3.9k
2k
R1: ±5% Tolerance
VR: ±20% Total Tolerance below 1% End Resistance
Table2-1: Values for External Resistor and Variable
Resistor Networks
(±10% Output Voltage Change)
＋V
＋S
−V
＋
VR
R1
＋
−
−S
TRM
LOAD
図２−４ 外付け抵抗の接続例３
Figure2-4: Connection Example of External Resistor
Network #3 PH100S/PH150S
In the same way, remote sensing wire can be connected to
load terminal input.
2 - 2 OUTPUT VOLTAGE RANGE 〈F type〉
The output voltage can be adjusted within -60 % - +20 %
(2V, 3V: ±20% ) of nominal voltage range. However, note
that OVP will be activated when output voltage is raised
over specification range.
Furthermore, when the output voltage is adjusted to high,
the output current shall be derated to a value that is pre-
scribed by the maximum output power. Also, when output
voltage is adjusted to high, there is a limitation on the in-
put voltage range for each model as shown in Figure2-5,
as well as limitation on the minimum output current as
shown in Figure 2-6 for each model.
0 35 40 45 50 55
90
100
110
120
＜４８VDC Input＞
＜24VDC Input＞
0 80 90 100 110 120
90
100
110
120
＜110VDC Input＞
0 200 220 240 260 280
90
100
110
120
＜２８０VDC Input＞
Figure2-5:Limitation of Input Voltage
0
18
20 22 24 26
90
100
110
120
Input Voltage (VDC)
Input Voltage (VDC)
Input Voltage (VDC)
Input Voltage (VDC)
Output Voltage (%)
Output Voltage (%)
Output Voltage (%)
Output Voltage (%)
0 35 40 45 50
55
90
100
110
120
＜４８VDC Input＞
＜24VDC Input＞
0 80 90 100 110 120
90
100
110
120
＜110VDC Input＞
0 200 220 240 260 280
90
100
110
120
＜２８０VDC Input＞
Figure2-5:Limitation of Input Voltage
0 18 20 22 24 26
90
100
110
120
Input Voltage (VDC)
Input Voltage (VDC)
Input Voltage (VDC)
Input Voltage (VDC)
Output Voltage (%)
Output Voltage (%)
Output Voltage (%)
Output Voltage (%)
0
35 40 45 50 55
90
100
110
120
＜４８VDC Input＞
＜24VDC Input＞
0 80 90 100 110 120
90
100
110
120
＜110VDC Input＞
0 200 220 240 260 280
90
100
110
120
＜２８０VDC Input＞
Figure2-5:Limitation of Input Voltage
0 18 20 22 24 26
90
100
110
120
Input Voltage (VDC)
Input Voltage (VDC)
Input Voltage (VDC)
Input Voltage (VDC)
Output Voltage (%)
Output Voltage (%)
Output Voltage (%)
Output Voltage (%)