PAH50S48-2.5 TDK Corporation, PAH50S48-2.5 Datasheet - Page 59

• Manufacturer Part Number: PAH50S48-2.5
• Manufacturer: TDK Corporation

C2
C2
C2
C2
Stabilize the output voltage
Stabilize the output voltage
Stabilize the output voltage
Stabilize the output voltage
at load terminals
at load terminals
at load terminals
at load terminals
（2） Secondary (output side) control
・All specifications are subject to change without notice.
PAH
put voltage at the output terminals is within output volt-
age range and that voltage between -V and -S terminals
is within 2V or less. Even for remote sensing case, use
power module such that output power is within specified
maximum output power.
Furthermore, reduce noise effect by using shield wire, twist
pair, or parallel pattern.
 ON/OFF Control (CNT terminal)
Without turning the input supply on and off, the output can be
enabled and disabled using this function. This function also
can be used for output sequence of plural power modules.
ON/OFF control circuit is on the primary side (the input
side). For secondary control, isolation can be achieved
through the use of an opto-coupler or relay.
Notes 1. When ON/OFF control function is not used for the
(1) Output ON/OFF control
Load
Load
Load
Load
+
+
-
-
+
+
-
-
2. When using long wiring, for prevention of noise, attach a
3. At L level, maximum source current from CNT termi-
4. The maximum CNT terminal voltage is 35V.
Module
Module
Power
Power
Module
Module
0.1µF capacitor between CNT terminal and -Vin terminal.
Standard and /T option, CNT terminal should be
shorted to -Vin terminal.
nal to -Vin terminal is 0.5mA.
Power
Power
450S48
Fig.9-2 Remote Sensing is Not in Use
（output side）
-S
-V
-S
-V
+V
+S
+V
+S
Fig.9-1 Remote Sensing is in Use
（output side）
-S
-V
-S
-V
+V
+S
+V
+S
Secondary
Fig.10-2 CNT Connection (2)
Fig.10-1 CNT Connection (1)
Secondary
Fuse
Fuse
C2
C2
C2
C2
Transistor, Relay
Transistor, Relay
or Equivalentt
Fuse
or Equivalentt
Fuse
Stabilize the output voltage
Stabilize the output voltage
Stabilize the output voltage
Stabilize the output voltage
at load terminals
at load terminals
-S
-V
-S
-V
-S
-V
+V
+S
+V
+S
+V
+S
at load terminals
at load terminals
+Vin
CNT
-Vin
Module
Power
+Vin
CNT
-Vin
Module
Power
+Vin
CNT
-Vin
Module
Power
+Vin
CNT
-Vin
Module
Power
Load
Load
Load
Load
+
+
-
-
+
+
-
-
（output side）
（output side）
Secondary
Secondary
Fuse
Fuse
Transistor, Relay
or Equivalentt
Fuse
Transistor, Relay
+
Load
+
Load
-
-
or Equivalentt
Fuse
“Thermal Design” .
 Parallel Operation
Parallel Operation can not be used.
 Series Operation
Series operation is possible for PAH450S48 series. Con-
nections shown fig. 12-1 and fig. 12-2 are possible.
 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 : Maximum baseplate temperature is 100℃. For worst
For better improvement of power module reliability, derat-
ing of baseplate temperature when using is recommended.
Fig.13-1 Measurement Point of Baseplate Temperature
Fig.12-1 Series Operation due to High Output Voltage
case operating condition, verify baseplate temperature at
measurement point indicated in fig. 13-1.
+Vin
Fig.12-2 Series Operation due to ±Output
Input side
CNT
-Vin
Module
Power
CL
+Vin
CNT
-Vin
Module
Power
+Vin
CNT
-Vin
Module
-S
-S
-V
-V
-S
-S
-V
-V
-S
-S
-V
-V
-S
-S
-V
-V
+V
+V
+S
+S
+V
+V
+S
+S
+V
+V
+S
+S
Power
+V
+V
+S
+S
+Vin
CNT
-Vin
Module
Power
17mm
Point of Baseplate
Measurement
Temperature
Output side
+
+
Load
+
+
Load
+
Load
Load
-
-
Load
-
+
Load
-
-
-
Input side
Input side
CL
CL
B-201
PAH
17mm
17mm