pah350s48 TDK Corp., pah350s48 Datasheet - Page 10

• Manufacturer Part Number: pah350s48
• Description: Compact And High-power Dc/dc Power-module
• Manufacturer: TDK Corp.

＋Vin
10
−Vin
CNT
CASE
“9.Remote Sensing”
Recommended Values:
C1 ：
C2：
C：
C-C： 2.2μF (Ceramic Capacitor)
C8,C9： 0.22μF (Film Capacitor)
C10, C11: 00pF (Film Capacitor)
C12, C13: 0.μF (Film Capacitor)
L1 ：
Notes 1. C (Electrolytic Capacitor) can be deleted if impedance
2 Output Voltage Adjustment Range
below by external resister or variable resistor.
age adjustment exceeds the ranges indicated below.
accordingly so as not to exceed the maximum output power.
fig.2-1 when output voltage is increased.
ied. For details on remote sensing function, please refer to
●Output Voltage Adjustment by external resistor or by variable resistor
(1) In case of adjusting output voltage lower
Output voltage could be adjusted within the range described
However, take note that OVP might trigger when output volt-
When increasing the output voltage, reduce the output current
Remote sensing is possible even when output voltage is var-
Take note that input voltage range is limited as shown in
(1-1)
2. C12 and C13 (Film Capacitor) can be deleted when output
3. VCCI Class 1, FCC Class A limits can be satisfied with
48V:
28V:
120
118
110
100
90
60
of input line is lower and operation of power module is
stable.
is connected to earth.
the above recommended filter at Densei-Lambda mea-
suring conditions. However, there are cases where
above limits might not be satisfied due to input and out-
put wiring method, as well as, peripheral circuits. When
selecting input filter, be sure to verify actual EMI charac-
teristics (CE and RE) before finalizing the filter. Refer to
PAH0S8-* Evaluation Data for details.
220μF (Electrolytic Capacitor)
Apply C2 capacitance in Basic Connection.
220μF (Electrolytic Capacitor)
80μH (Common-mode choke coil)
0
Available maximum output current = rated output
current
-
-
Output Voltage Adjustment Range
40% - +20% of Nominal Output Voltage
40% - +18% of Nominal Output Voltage
Fig.2-1 Limit of Input Voltage
36
Module
Power
Input Voltage（VDC）
Radj(down)
TRM
38
-V
+V
-S
+S
40
=
100%
Δ%
48V Model
28V Model
Radj （down）
42
2
[ ]
kΩ
76
+
-
Load
(2) In case of adjusting output voltage higher
(2-1) Allowable maximum output current = maximum out-
(2-2) Connect an external resistor Radj(up) between TRM
(1-2)
(1-3)
Fig.2-2 Connection for output voltage trim down
Module
Module
Power
Power
Fig.2-4 Connection for output voltage trim up
Module
Power
Module
Radj （up） ＝
Power
put power ÷ output voltage (reduce maximum out-
put current in specification.)
terminal and +S terminal.
Radj(down)
Radj(down)
TRM
Below graph is relationΔ(% ) and value of external
TRM
Connect an external resistor Radj(down) between
the TRM terminal and -S terminal.
Equation of external resistor and output voltage
resistor.
1000
TRM
1000
-V
+V
-V
-S
+V
-S
Radj(down)
+S
100
+S
100
-V
TRM
+V
-S
Fig.2-3 Δ(% ) vs. Radj(down) (1)
+S
0.1
1000
0.1
10
10
-V
Radj(down)
Δ(% )
+V
-S
+S
100
1
1
0.1
C ｈ ange in Output Voltage Δ （%）
C ｈ ange in Output Voltage Δ （%）
10
0
0
1
C ｈ ange in Output Voltage Δ （%）
0
Vo （ 100%+
1.225×
=
=
10
10
=
10
100%
100%
Δ%
Δ%
: Value of external resistor
: Output voltage change rate
100%
Radj （up）
Radj （down）
Radj （down）
against nominal output voltage
Δ%
Δ
Radj （down）
Δ
20
20
％
％）
20
2
2
2
100%+2×
[ ]
[ ]
kΩ
kΩ
[ ]
30
30
kΩ
30
Δ
％
+
-
Load
40
Δ
40
％
40
+
+
-
-
Load
Load
[ ]
+
kΩ
-
Load
Module
Module
Power
Power
Radj （up） ＝
Radj （up） ＝
Module
Power
10000
Radj （up） ＝
10000
1000
1000
10000
TRM
TRM
100
100
1000
-V
10
-V
10
+V
-S
+V
+S
-S
+S
TRM
100
-V
10
+V
-S
+S
0
0
0
C ｈ a
C ｈ a
C ｈ
V
V