PAH200S48-12 TDK Corporation, PAH200S48-12 Datasheet - Page 48

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

Specifications of PAH200S48-12

• Rohs Compliant: YES

PAH
B-190
PAH
1 Input Voltage Range
Input voltage range for PAH300, 350S48 Series is indicated
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: 33μF
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,
300S48, 350S48
Input Fuse recommended current rating:
PAH300S48: 15A (F15AH, 125/250V)
PAH350S48: 20A (F20AH, 125/250V)
Allowable input ripple voltage: 4Vp-p
Fuse
Input Voltage Range: 36 - 76VDC
Fig.1-1 Input Ripple Voltage
M3 threaded hole
M3 threaded hole
Fig.1-2 Basic Connection
MODULE
POWER
Time
Time
2. Explanations on Specifications
Vrpl
below 2V
Vrpl
below 4V
Input Voltage
Range
Input Voltage
Range
t
t
Load
verify maximum allowable ripple current this capacitor
when selecting component. Verify actual ripple current
value by actual measurement.
Recommended capacitor value: 33μF and above (Voltage
Rating 100V and above)
Notes） 1. Use low impedance electrolytic capacitor with excel-
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 excel-
Table1-1 C4 Recommended Values of External
Vout
2. When input line inductance becomes excessively
3. When ambient temperature becomes lower than
12V
28V
2. Use three capacitors indicated above in parallel when
3. Take note of the allowable ripple current of the ca-
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.
–20℃, connect two capacitors indicated above in
parallel to reduce ESR.
lent temperature characteristics.
(Nippon Chemi-con LXY Series or equivalent)
ambient temperature becomes lower than –20℃ to
reduce ESR.
pacitor to be used. Especially, when load adding ca-
pacitors for abrupt current changes, be sure to verify
that ripple current does not exceed allowable ripple
current before use.
Output Capacitor
・All specifications are subject to change without notice.
25V 470μF
50V 220μF
C4