PH300S48-24 TDK Corporation, PH300S48-24 Datasheet - Page 43
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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
Available stocks
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Price
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(1)Parallel Operation
(2)N+1 Parallel Redundant Operation
・All specifications are subject to change without notice.
PH
1 INTRODUCTION
PH series (F type only) equally shares current by connect-
ing each PC terminal of power module in parallel.
There are 2 different parallel operations as follows.
When load current can not be supplied by only a unit of
power module, the output can be enhanced. Also, the reli-
ability of the system can be improved to derate the output
power.
For power supply system required high reliability, it is pos-
sible to improve the reliability of the system by using N+1
units for load of N units.
In parallel operation with N+1 units, even though one of
the power modules is failed, performance of the system
can be maintained for the other units cover for the failure
power module and share the load current.
2 PRECAUTION IN PARALLEL OPERATION
Basic cautions and warnings in parallel operation are as
follows.
● Only F type power modules are applicable.
● Available to use 11 units maximum in identical model
● Attach a common mode choke coil at input of each
● Accuracy of output voltage adjustment shall be within
● The maximum load current shall be less than 95% of nomi-
● Ground of PC terminal (signal ground) is -S terminal. In-
● Use same length and size of output load wire between
● If IOG and AUX terminals are used, read its explanation
● When the distance between power modules is too long,
Inhibit parallel operation on S type power modules.
(same output power and voltage.)
power module.
±1%.
nal output current.
hibit to use as power line.
power modules in parallel operation and loads.
in the manual.
current balance might get worse due to switching noise.
As countermeasure, please connect a ceramic capacitor
(0.01 to 0.1 uF) between PC and -S terminal of each
power module.
50 - 150, 75 - 300F
3. PH-SERIES Parallel Operation
(a)Parallel connection to enhance the output and to im-
(b)Parallel Operation programmed output voltage
(c)Parallel Operation with adjustable output voltage
(d) Parallel operation when the output voltage is adjusted
3 PARALLEL OPERATION
Figure 3-4: Parallel Operation which is possible to adjust
Figure3-3: Parallel Operation with adjustable voltage
prove the reliability
by applying voltage externally
Figure3-2: Programmed Output Voltage
output voltage by external applied voltage
Figure3-1: Parallel Operation
TRM
TRM
TRM
TRM
+S
+V
−V
−S
+S
+V
−V
−S
TRM
TRM
PC
PC
+S
+V
−V
−S
+S
+V
−V
−S
PC
PC
+S
+V
−V
−S
+S
+V
−V
−S
PC
PC
+S
+V
−V
−S
+S
+V
−V
−S
PC
PC
+
+
+
+
+
+
+
+
LOAD
+
−
LOAD
LOAD
LOAD
+
−
+
−
+
−
B-341
PH