PAH200S48-12 TDK Corporation, PAH200S48-12 Datasheet - Page 56

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

Specifications of PAH200S48-12

• Rohs Compliant: YES

PAH
B-198
PAH
C1 : 100μF
To prevent the effect of input line inductance to the power
module, connect electrolytic capacitor or ceramic capaci-
tor between +Vin and -Vin terminals.
Furthermore, use electrolytic capacitor with small ESR
value. Especially take note that during line turn off at low
ambient temperature, power module output will not nor-
mally shut down due to unstable C1 voltage.
Also, ripple current flows across this capacitor. Therefore,
verify maximum allowable ripple current this capacitor
when selecting component. Verify actual ripple current
value by actual measurement.
Notes 1. Use low impedance electrolytic capacitor with excel-
C2 :
For stable operation, connect a ceramic capacitor be-
tween +V and -V within 50mm distance from the output
terminals.
Take note that output ripple and output shutdown could be
affected by ceramic capacitor, equivalent impedance and
inductance characteristics of wiring.
Take note that output ripple voltage could vary according
to PCB wiring design.
For cases of abrupt changes in load current or input volt-
age, increasing capacitance value of the external capaci-
tors could reduce the voltage fluctuation.
Maximum capacitance (electrolytic capacitor) that can be
connected between +V and -V, is shown below.
Notes Take note of the allowable ripple current of the capacitor
C3：
When switches or connectors are used between input
source and PAH450S48 Series input terminals, impulse
surge voltage is generated due to input throw-in by switch
on/off or due to inserting/ removing of power module from
the active line. For this case, connect an additional elec-
trolytic capacitor C3 as shown in fig.1-3 and fig. 1-4.
Table1-1 C4 Recommended Values of External Output Capacitor
Recommended Capacitance Value : 100μF and above
Recommended capacitor value : 100μF and above
to be used. Especially, when load adding capacitors for
abrupt current changes, be sure to verify that ripple cur-
rent does not exceed allowable ripple current before use.
2. When input line inductance becomes excessively
Maximum capacitance of output capacitor
lent temperature characteristics.
(Nippon Chemi-con LXV Series or equivalent)
high due to insertion of choke coil, operation of the
power module could become unstable. For this case,
increase C1 value more than the value indicated
above.
450S48
(Voltage Rating 100V and above)
(Voltage Rating 100V and above)
Vout
28V
48V
28V : 10,000μF
48V : 2,000μF
100V 4.7μF×6parallel
50V 22μF×4parallel
C2
（1） Recommended application as EMI countermeasure
Also, in-rush current flows at line throw-in. Therefore, be
sure to verify capability of switch or fuse to withstand I2t
at line throw-in.
Reverse input connection
Reverse input polarity would cause module damage. For
cases where reverse connections are possible, connect a
protective diode and fuse. Use protective diode with higher
voltage rating than the input voltage, and with higher surge
current rating than the fuse.
● Recommended application as EMI countermeasure
Fig.1-6 Recommended input filter as EMI countermeasure
Fig.1-5 Protection for Reversed Connection of Input
(compliant to VCCI Class 1, FCC class A)
Fuse
Fig.1-4 Input Filter when Plural Power Modules
C5 C6 C7
Fig.1-3 Input Filter with Input Switch
Switch
Switch
Switch
Switch
Switch
L1
Switch
Fuse
Fuse
Fuse
C8
C9
C3
C3
C3
C3
・All specifications are subject to change without notice.
C3
C3
C10
C11
＋
C4
Fuse
Fuse
＋
Fuse
Fuse
Fuse
Fuse
Fuse
Fuse
Fuse
C1
C1
C1
C1
Power Module
C1
C1
C1
C1
C1
C1
C1
C1
C1
CASE
+Vin
CNT
-Vin
TRM
+V
+S
-Ｖ
-S
-Vin
-Vin
-Vin
+Vin
-Vin
+Vin
-Vin
+Vin
-Vin
+Vin
-Vin
+Vin
-Vin
+Vin
-Vin
+Vin
+Vin
+Vin
-Vin
-Vin
+Vin
-Vin
+Vin
+Vin
C12
C13
C2
+
Load
-