PAH200S48-12 TDK Corporation, PAH200S48-12 Datasheet - Page 63

• Manufacturer Part Number: PAH200S48-12
• Description: LAMBDA PART
• Manufacturer: TDK Corporation

Specifications of PAH200S48-12

• Rohs Compliant: YES

・All specifications are subject to change without notice.
PAH
2 External Components
The table below shows the recommended values for the
above external components.
PAH75D24 SERIES module is not internally fused. To
ensure safe operation and to receive each safety standard
approval, please connect an external fuse, F1 as shown in
the diagram above.
Input capacitor C1 is recommended to stabilize the mod-
ule when the module is powered from a high impedance
source. Capacitor C2 is used to absorb noise coming from
the module itself. This capacitor will also help the EMI
performance of the module.
The function of capacitor C3 and C4 is to reduce the out-
put ripple of the power module and high frequency noise
that is produced by the module.
If in any application that an input reversal connection is
possible, a protective diode which is connected across
+Vin and -Vin is recommended.
3 Input Voltage Range
The operating input voltage range of PAH75D24 SERIES
is 18 - 36VDC. The maximum allowable input ripple volt-
age (Vrpl) is 4V. Any ripple that exceeds this value might
cause the module to become unstable.
4 Output Voltage Adjust Range
The output voltage of power module can be adjusted by
connecting an external resistor (R
pin and either the +Vo or –Vo pins.
With an external resistor (R
pin as shown in diagram below, output voltage will de-
crease.
C3, C4 Ceramic capacitor : 33uF
Item
C1
C2
F1
75D24
For Tbp = -20° C to 100° C
Select the E-cap with low ESR and sufficient
allowable ripple current, verify actual ripple
current value by actual measurement.
Recommended Nichicon UPW series, Capaci-
tance value: 100µF and above.
Voltage rating: 50V and above.
For Tbp = -40° C to 100° C
Recommended ceramic cap.: 50V 33uF
Ceramic capacitor : 2kVAC 4700pF
(UL approved and fast acting)
Vo1
Time
adj
250V 10A
) between TRIM pin and +Vo
Below
Vrpl
4V
adj
) between the TRIM
Input Voltage
Range
Vo2
t
If the external resistor (R
pin and –Vo pin, the output voltage will increase. Diagram
shown below is the output voltage trim up connection.
The equations and graphs for the required external resistor
(R
of ΔVo% is as shown in the next page.
For output adjust down, the allowable output current have
to be the same as nominal output current.
For output adjust up, the allowable output current have to
derate to maximun power.
Refer to the below table
1）PAH75D24-5033 – Output Adjustment
Followings show the equations and graphs for the required
external resistor to tune down and up output voltage for
PAH75D24-3325 model.
Ouput
adjust up
Nominal output
Output adjust
down
adj
) value to obtain a percentage output voltage change
i) Vo1 (5V) : output adjust down
+Vo2
-Vo2
TRM2
+Vo1
-Vo1
TRM1
+Vo2
-Vo2
TRM2
+Vo1
-Vo1
TRM1
R
adj1
(down) ＝ (
1000
Vo1(V) Io1(A) Vo2(V) Io2(A)
100
0.1
10
5.5
4.5
1
5
5
5
0
%CHANGE IN OUTPUT VOLTAGE (Δ%)
adj
2
) is connected between the TRIM
2.5 −ΔVo(4.32)
Radj2
Radj1
Radj2
Radj1
4.64
4.11
5.1
5.1
5.1
4
ΔVo
3.63
2.97
6
3.3
3.3
3.3
＋
−
＋
−
＋
−
＋
−
LOAD
LOAD
LOAD
LOAD
8
)kΩ
15
15
15
15
15
10
Po(W)
72.45
70.05
75
75
75
B-205
PAH