PAF600F280-28 TDK Corporation, PAF600F280-28 Datasheet - Page 21

• Manufacturer Part Number: PAF600F280-28
• Description: 28V@21.5A
• Manufacturer: TDK Corporation

A. Controlling the ON/OFF terminal from the input side
B. Controlling the ON/OFF terminal from the output side
C. Controlling the ON/OFF terminal by an external power supply
Note) 1. When wiring becomes long, connect a capacitor of
 Parallel Operation (PC terminal)
By connecting the PC terminal of each power module,
output current can be equally drawn from each module. A
maximum of 11 units of the same model can be connect-
ed.
Furthermore, be sure that the output power of every mod-
ule does not exceed the maximum output power value.
Connect current limiting resistor R1 as shown in
Fig 10-1.
Connect the current limiting resistor R4 as shown in
Fig.10-2.
If necessary connect a current limiting resistor R5 as
shown in Fig.10-3.
1mA≦I
R1 Recommended Resistor value: 15kΩ(1/4W)
R4 Recommended Resistor Value: 2kΩ(1/6W)
＊1 For option models, inquire to Densei-Lambda.
・All specifications are subject to change without notice.
2. Current limiting resistor can also be connected to the
PAF
Fig.10-1 Connection of ON/OFF Control (A)
Fig.10-2 Connection of ON/OFF Control (B)
Fig.10-3 Connection of ON/OFF Control (C)
ON/OFF Level
about 0.1μF value between the +ON/OFF terminal
and -ON/OFF terminal at a nearest distance.
-ON/OFF terminal side.
（ON/OFF）
Table10-1 ON/OFF Control Mode
Open
500F24
Fuse
ex.5V
≦5mA
I(ON/OFF)
C1
R4
+
SW
R5
I(ON/OFF)
I(ON/OFF)
R1
−ON/OFF
AUX
＋ON/OFF
−S
1k
Standard
−ON/OFF
＋ON/OFF
−ON/OFF
OFF
ON
＋Vin
−Vin
＋ON/OFF
1k
1k
Output Status
PC
PC
Option（＊1）
PC
OFF
ON
By setting output voltage accuracy of each module in a
parallel operation to within ±1 % , the maximum value of
the output current that can be drawn is 95 % of the total
rated output current.
Refer to “Parallel Operation” of the PH Application Notes
for details,.
 Series Operation
Series operation is possible for PAF500F24 series. Con-
nections shown Fig.12-1 and Fig.12-2 is possible.
 I.O.G. signal (IOG terminal)
Normal or abnormal operation of the power module can be
monitored by using the IOG terminal. Output of this signal
monitor is located at secondary side (output side) and is
an open collector output.
This signal is LOW when inverter is normally operating and
HIGH when inverter stops or when inverter is operating ab-
normally. (Maximum sink current is 5mA, maximum applied
voltage is 35V)
Ground for the IOG terminal is the -S terminal.
Also note that IOG becomes unstable for following condi-
tions:
 Auxiliary power supply for
For AUX terminal, output voltage value is within 7 - 10
VDC range, maximum output current is 20mA. Ground for
the AUX terminal is –S terminal.
Avoid short circuit of AUX terminal with other terminals as
this would lead to power module damage.
● Operation of Over Current Protection (OCP)
● Light load conditions at parallel operation
● Dynamic load operation
external signals (AUX terminal)
Fig.12-1 Series Operation in High Output Voltage
＋S
＋V
−V
−S
＋S
＋V
−V
−S
＋S
＋V
−V
−S
＋S
＋V
−V
−S
Fig.12-2 ±Output Series Operation
+
+
+
+
Load
Load
Load
＋
−
＋
−
＋
−
B-113
PAF