PAH200S48-12 TDK Corporation, PAH200S48-12 Datasheet - Page 34

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

Specifications of PAH200S48-12

• Rohs Compliant: YES

PAH
B-176
PAH
1 Input Voltage Range
Input voltage range for PAH300, 350S24 Series is indi-
cated below.
Basically， ripple voltage (Vrpl) which results from rectifica-
tion and filtering of commercial AC line is included within
the input voltage as shown in fig. 1-1. Ripple voltage must
be limited within the voltage described below.
When this value is exceeded, the output ripple voltage be-
comes large.
Note that sudden input voltage change may cause varia-
tion of output voltage transitionally.
Also, input voltage waveform peak value must not exceed
above input voltage range.
●Basic Connection
Input Fuse
This power module has no built-in fuse. Use external fuse
to acquire various Safety Standards and to improve safety.
Also, use fast-blow type for every module.
Furthermore, fuse must be connected to the +Vin side if –
Vin side is used as ground, or fuse must be connected to
–Vin side if +Vin side is used as a ground.
C1:
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-
300S24, 350S24
Input Fuse recommended current rating:
Fuse
Allowable input ripple voltage: 2Vp-p
C1 +
Input Voltage Range: 18 - 36VDC
Fig.1-1 Input Ripple Voltage
M3 threaded hole
M3 threaded hole
Fig.1-2 Basic Connection
+Vin
CNT
CASE
-Vin
MODULE
PAH300S24: 30A
PAH350S24: 40A
POWER
2. Explanations on Specifications
Time
Time
TRM
+V
+S
-S
-V
C3
50mm
C2
Vrpl
below 2V
Vrpl
4V以下
C4 +
C5
Input Voltage
Range
入力電圧
範囲
Load
+
-
t
t
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.
Recommended capacitor value: 220μF ×2pcs and above
Notes
C2, C3: 0.022μF
To reduce spike noise voltage at the output, connect film
capacitors or ceramic capacitors between +V and the
nearest M3 threaded hole and between –V and the near-
est M3 threaded hole.
Also, take note that output spike noise voltage could vary
according to PCB (printed circuit board) wiring design.
However, for cases where baseplate is connected to +V or
–V, use the nearest M3 threaded hole. (M3 threaded holes
is internally connected to baseplate inside the Power Mod-
ule.) For this type of connection, C2 and C3 can be omit-
ted.
C4:
For stable operation, connect an electrolytic capacitor be-
tween +V and –V at 50mm distance from the output termi-
nals.
Take note that output ripple and output shutdown could be
affected by electrolytic 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.
Notes
1. Use low impedance electrolytic capacitor with excellent
2. When input line inductance becomes excessively high
3. When ambient temperature becomes lower than –20℃,
1. Use low impedance electrolytic capacitor with excellent
2. Use three capacitors indicated above in parallel when
Table1-1 C4: Recommended Values of External
temperature characteristics.
(Nippon Chemi-con LXY Series or equivalent)
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.
connect 4 more and above capacitors indicated above
in parallel to reduce ESR.
Vout
temperature characteristics.
(Nippon Chemi-con LXY Series or equivalent)
ambient temperature becomes lower than –20℃ to re-
duce ESR.
12V
28V
(Voltage Rating 50V and above)
・All specifications are subject to change without notice.
(Parallel connect)
Output Capacitor
25V 470μF
50V 220μF
C4