PAH350S48-28 TDK Corporation, PAH350S48-28 Datasheet - Page 57

• Manufacturer Part Number: PAH350S48-28
• Description: POWER SUPPLY: PAH35048-28
• Manufacturer: TDK Corporation

Specifications of PAH350S48-28

• Rohs Compliant: YES

C1
＋Vin
−Vin
CNT
CASE
・All specifications are subject to change without notice.
PAH
Recommended Values:
C1 ：
C2：
C4：
C5-C7： 2.2μF (Ceramic Capacitor)
C8,C9： 0.22μF (Film Capacitor)
C10, C11: 4700pF (Film Capacitor)
C12, C13: 0.47μF (Film Capacitor)
L1 ：
Notes 1. C4 (Electrolytic Capacitor) can be deleted if imped-
2 Output Voltage Adjustment Range
Output voltage could be adjusted within the range de-
scribed below by external resister or variable resistor.
However, take note that OVP might trigger when output
voltage adjustment exceeds the ranges indicated below.
When increasing the output voltage, reduce the output
current accordingly so as not to exceed the maximum out-
put power.
Take note that input voltage range is limited as shown in
fig.2-1 when output voltage is increased.
Remote sensing is possible even when output voltage is
varied. For details on remote sensing function, please refer
to “9.Remote Sensing”
●Output Voltage Adjustment by external resistor or by variable resistor
(1) In case of adjusting output voltage lower
(1-1)
28V: -40% - +18% of Nominal Output Voltage
48V: -40% - +20% of Nominal Output Voltage
2. C12 and C13 (Film Capacitor) can be deleted when
3. VCCI Class 1, FCC Class A limits can be satisfied
120
118
110
100
90
60
and output wiring method, as well as, peripheral circuits.
filter. Refer to PAH450S48-* Evaluation Data for details.
220μF (Electrolytic Capacitor)
Apply C2 capacitance in Basic Connection.
220μF (Electrolytic Capacitor)
80μH (Common-mode choke coil)
ance of input line is lower and operation of power
module is stable.
output is connected to earth.
with the above recommended filter at Densei-Lambda
measuring conditions. However, there are cases
where above limits might not be satisfied due to input
When selecting input filter, be sure to verify actual
EMI characteristics (CE and RE) before finalizing the
450S48
0
Available maximum output current = rated out-
put current
Output Voltage Adjustment Range
Fig.2-1 Limit of Input Voltage
36
Module
Power
Input Voltage（VDC）
Radj(down)
TRM
38
-V
+V
-S
+S
40
=
100%
Δ%
Radj （down）
48V Model
28V Model
42
2
[ ]
kΩ
76
+
-
Load
(2) In case of adjusting output voltage higher
(1-2)
(1-3)
(2-1) Allowable maximum output current = maximum
(2-2) Connect an external resistor Radj(up) between
Fig.2-2 Connection for output voltage trim down
Module
Module
Fig.2-4 Connection for output voltage trim up
Power
Power
Module
Power
Module
Power
Radj （up） ＝
output power ÷ output voltage (reduce maxi-
mum output current in specification.)
TRM terminal and +S terminal.
Radj(down)
Radj(down)
TRM
TRM
Connect an external resistor Radj(down) be-
tween the TRM terminal and -S terminal.
Equation of external resistor and output voltage
Below graph is relationΔ( % ) and value of ex-
ternal resistor.
1000
TRM
1000
-V
+V
-V
-S
+V
+S
-S
Radj(down)
+S
100
Fig.2-3 Δ(% ) vs. Radj(down) (1)
-V
TRM
100
+V
-S
+S
0.1
1000
0.1
10
10
-V
Radj(down)
Δ(% )
+V
-S
+S
100
1
1
C ｈ ange in Output Voltage Δ （%）
0.1
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
B-199
Module
Module
Power
Power
PAH
Radj （u
Radj （u
Module
Power
10000
Radj （
10000
1000
1000
100
TRM
TR
100
100
10
-V
10
+V
-V
-S
10
+V
+S
-S
+
T
1