PH300S48-24 TDK Corporation, PH300S48-24 Datasheet - Page 38
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PH300S48-24
Manufacturer Part Number
PH300S48-24
Description
Power Supply, Power Rating 300 Watt, Output Current Rating 12.50 Ampere
Manufacturer
TDK Corporation
Datasheet
1.PH300S48-24.pdf
(58 pages)
Specifications of PH300S48-24
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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PH
B-336
PH
Resistance values and connection method of external re-
sistor and variable resistor are shown as follows.
In this case, variable resistor is attached as remote pro-
gramming resistor, and the output can be remotely pro-
grammed. Also, aside from remote programming resistor,
remote programming can be done externally by voltage
source.
R1: ±5% Tolerance
VR: ±20% Total Tolerance below 1% End Resistance
Table2-3: Values of External Resistor and Variable Resistor
R1: ±5% Tolerance
VR: ±20% Total Tolerance End Resistance below 1%
In the same way, remote sensing wires can be connected
to load terminal input.
Table2-4 : Values of External Resistor and Variable Resistor
(-60 to +20% Output Voltage Change ; ±20% for 2V 3V)
< 2 8 0 VDC Input>
R1
VR
R1
VR
Figure2-7: Connection Example of External Resistor
120
110
100
10
50 - 150, 75 - 300F
90
90
5
0
0
0
Figure2-6: Minimum Output Current Limit
20k
Figure2-5:Limitation of Input Voltage
43k
2V
2k
2V
1k
Figure2-5: Limitation of Input Voltage
図2 − 6 最小出力電流値の制限
TRM
+S
+V
−V
−S
(±10% Output Voltage Change)
図2 − 7 外付け抵抗の接続例
40
200
20k
80
43k
3V
3V
2k
1k
R1
Output Voltage ( % )
3.3k
Input Voltage ( VDC )
Input Voltage ( VDC )
20k
VR
43k
220
60
5V
5V
2k
+
90
12V
3.3k
50k
12V
43k
5k
240
80
100
15V
3.3k
15V
50k
43k
5k
100
260
110
+
−
Load
100k
24V
3.3k
24V
43k
10k
280
120
120
100k
3.3k
28V
28V
43k
10k
〈Reference〉Trim Circuit
〈外部電圧可変の応用例〉
〈Changing Output Voltage by Applying External Reference
〈Application Example of External Voltage〉
Voltage; F type only〉
On F type power module, the output voltage can be ad-
justed within the same range as remote programming with
variable resistor by applying external voltage to TRM termi-
nal. The output voltage for this case can be calculated by
the following equation.
Output Voltage=TRM Voltage × Nominal Output Voltage
Reference voltage for Voltage Detection Amplifier is the
TRM terminal voltage. When TRM terminal is 1.0V (TYP),
output is nominal voltage.
For other applications not described here, use this value
as a reference when selecting external component values.
3 MAXIMUM OUTPUT RIPPLE & NOISE
The maximum output ripple and noise are measured by the
following prescribed method based on JEITA RC-9141.
The connection is shown in Figure3-1. Attach a film ca-
pacitor (1 μF) to a point 50mm from the output terminal.
Then attach a coaxial cable with JEITA attachment to both
sides of the film capacitor as shown in Figure3-1. Oscillo-
scope shall be set at 100MHz band width.
2.495V
Standard
Voltage
TRM
Figure2-9: Example of Applied Voltage
TRM
+S
+V
−V
−S
図2−9 外部電圧可変の応用例
+S
+V
−V
−S
Voltage Detection
Amplifier
15kΩ ( TYP )
Figure2-8: Network of Trim Circuit
図2 − 7 外付け抵抗の接続例
図2 −8 ト リ ム回路構成
・All specifications are subject to change without notice.
R1
+
VR
+
+
−
10kΩ
Externally
1kΩ
Voltage
Applied
+
−
Load
Load
+
−
+S
−S
TRM