PH100S280-5 TDK Corporation, PH100S280-5 Datasheet - Page 49

• Manufacturer Part Number: PH100S280-5
• Description: Power Supply, Power Rating 100 Watt, Output Current Rating 20.00 Ampere
• Manufacturer: TDK Corporation

Specifications of PH100S280-5

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

・All specifications are subject to change without notice.
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4 Maximum Line Regulation
The maximum output voltage changes when the input volt-
age is slowly varied within the range. (Steady state)
5 Maximum Load Regulation
The maximum output voltage changed when the output
current is slowly varied within the range. (Steady state)
6 Over Current Protection (OCP)
OCP function is provided in the power module.
When short or overload condition is released, the output
will be automatically recovered. This setting value is fixed
and impossible to change externally.
Be aware that the power module could be damaged in
some thermal conditions when short or overloaded condi-
tion is continuously carried on.
7 Over Voltage Protection (OVP)
OVP function is provided in the power module.
This setting value is a value for the nominal output voltage.
It is fixed and impossible to change externally.
When OVP function activates, the output will shut down.
The output can be recovered by reset of ON/OFF Control
terminal to low at once or reapplying input after input volt-
age bring down to less than the following values. Time
reset of ON/OFF control terminal is more than 100ms.
To check OVP function, apply an external voltage that
is limited to upper limit of maximum OVP range. Refer to
specification for OVP range. Avoid to apply over voltage
not to damage the unit.
Input Voltage to release OVP
＋V
−V
300S, 600S
Figure 3-2 Measurement of Maximum Output
280V Input: less than 150VDC
48V Input: less than 25VDC
Ripple & Noise (Example : PH600S)
＋
JEITA
Attachment
R：50Ω
C ：4700pF
Coaxial Cable
As short as possible
1.5m 50Ω
Load
Oscilloscope
8 Thermal Protection
Thermal protection is provided in the power module. It pro-
hibits abnormal rise of ambient temperature and internal
temperature of power supply, and the output will shut down.
Trip point of thermal protection is 105℃ - 130℃ of base-
plate temperature.
The output is recovered by reapplying the input voltage af-
ter the input shut down (same as OVP) when the tempera-
ture is cooled down enough or resetting ON/OFF control
terminal.
9 Remote Sensing (+S,-S Terminal)
Remote sensing which compensates voltage drop by wir-
ing from output terminal to load terminal in power supply is
equipped.
If remote sensing is unnecessary to use (using local sens-
ing), directly connect +S and +V terminals and -S and -V
terminals as short as possible.
Use within the maximum output power range with either
compensated voltage range of line drop (voltage drop by
wiring) is in output range or voltage between -V and -S
is 2V. Also, reduce noise affects by using shielded wire,
twisted wire, or parallel pattern as remote sensing wire.
＋S
＋V
−V
−S
Figure9-2 Remote Sensing Not in Use
＋S
＋V
−V
−S
Figure9-1 Remote Sensing at Use
Figure9-1 Remote Sensing at Use
＋
Stabilize the output voltage at
Load terminal
＋
Stabilize the output voltage at
output terminal
twisted wire
＋
Load
Load
＋
−
＋
−
B-347
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