PAF600F280-28 TDK Corporation, PAF600F280-28 Datasheet - Page 31

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

・All specifications are subject to change without notice.
PAF
2. Current limiting resistor can also be connected to the
 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.
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-Series Application
Notes for details,
 Series Operation
Series operation is possible for PAF500, 600, 700F48 se-
ries. Connections shown fig.12-1and fig.12-2 are possible.
 I.O.G. signal (IOG terminal)
This function is built-in for 12V, 28V models.
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.)
Fig.12-1 Series Operation in High Output Voltage
1mA≦I
＊1 For option models, inquire to Densei-Lambda.
＋S
＋V
−V
−S
＋S
＋V
−V
−S
＋S
＋V
−V
−S
＋S
＋V
−V
−S
ON/OFF Level
500F48, 600F48, 700F48
-ON/OFF terminal side.
（ON/OFF）
Fig.12-2 ±Output Series Operation
Table10-1 ON/OFF Control Mode
Open
+
+
+
+
≦5mA
Standard
OFF
ON
Output Status
Option（＊1）
Load
Load
Load
＋
−
＋
−
＋
−
OFF
ON
“Thermal Design”.
Ground for the IOG terminal is the -S terminal.
Also note that IOG becomes unstable for following condi-
tions:
Also take note that this function cannot be used for3.3V
and 5V models.
 Auxiliary power supply for external signals (AUX terminal)
For AUX terminal, output voltage value is within 7～
10VDC 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.
 Operating ambient temperature
There is no restriction on mounting direction but there
should be enough consideration for airflow so that heat
does not accumulate around the power module vicinity.
Determine external components configuration and mount-
ing direction on PCB such that air could flow through the
heatsink at forced cooling and conventional cooling.
By maintaining actual baseplate temperature below 100℃ ,
operation is possible.
For details on thermal design, refer to Application Notes
Note）1. Maximum baseplate temperature is 100℃. For worst
For better improvement of power module reliability, derat-
ing of baseplate temperature when using is recommended.
 Operating Ambient Humidity
Take note that moisture could lead to power module abnor-
mal operation or damage.
● Operation of Over Current Protection (OCP)
● Light load conditions at parallel operation
● Dynamic load operation
2. There is limitation on baseplate temperature range for
Input Side
case operating condition, verify baseplate temperature
at measurement point indicated in fig. 15-1.
PAF700F48 as shown in fig.15-2.
120
100
86
80
60
40
20
-40
Fig.15-2 PAF700F48 Derating curve
Fig.15-1 Temperature Measurement
-20
42mm
Baseplate Temperature（℃）
Point of Baseplate
0
20
60
80
Output Side
85
Temperature
Measuring Point
of Baseplate
100
120
B-123
PAF