PAH200S48-12 TDK Corporation, PAH200S48-12 Datasheet - Page 51

• 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
4 Maximum Line Regulation
Maximum value of output voltage change when input volt-
age is gradually varied (steady state) within specified input
voltage range.
5 Maximum Load Regulation
Maximum value of output voltage change when output
current is gradually varied (steady state) within specified
output current range.
When using at dynamic load mode, audible noise could be
heard from the power module and output voltage fluctua-
tion might increase. A thorough pre-evaluation must be
performed before using this power module.
6 Over Current Protection (OCP)
This power module has built-in OCP function.
Output will recover when short circuit or overload condi-
tions are released. OCP setting value is fixed and there-
fore, cannot be externally adjusted.
Also, take note that power module might be damaged con-
tinuing output short circuit or over load conditions depend-
ing on thermal conditions.
7 Over Voltage Protection (OVP)
This power module has built-in OVP function.
OVP set point is relative to the rated output voltage value.
OVP setting value is fixed and therefore, cannot be exter-
nally adjusted.
When OVP is triggered, output can be recovered by turn-
ing input line off and then turning it on again after lowering
the input voltage below the voltage value indicated below,
or by manual reset of the ON/OFF control terminal. Reset
time for ON/OFF control terminal is 100ms or longer.
When verifying OVP function by applying external voltage
at the output terminals, applied voltage value should not
exceed specified OVP maximum value. Refer to specifica-
tion table for OVP maximum value. Avoid applying external
voltage that exceeds OVP maximum value because this
will cause power module damage.
8 Over Temperature Protection (OTP)
This power module has built-in OTP function.
This function operates and shuts down the output when
ambient temperature or internal temperature of power
module abnormally rises. OTP operates at 105℃ to 130℃
baseplate temperature. OTP can be released when base-
plate temperature drops down approximately to within 80℃
to 95℃ . However, take note that OTP will operate again
unless the cause of abnormal heat of the power module is
eliminated.
9 Remote Sensing (+S, -S terminal)
Remote sensing terminal is provided to compensate for
voltage drop across the wirings from the power module
output terminal to the load input terminal.
When remote sensing function is not used (local sensing),
short +S terminal to +V terminal and, –S terminal to –V
terminal.
Take note that voltage compensation range for line drop
(voltage drop due to wiring) is determined such that out-
put voltage at the output terminals is within output volt-
age range and that voltage between –V and –S terminals
OVP release input voltage value : 24VDC and below
300S48, 350S48
（1）Output ON/OFF control
is within 2V or less. Even for remote sensing case, use
power module such that output power is within specified
maximum output power.
Furthermore, reduce noise effect by using shield wire, twist
pair, or parallel pattern.
 ON/OFF Control (CNT terminal)
Without turning the input supply on and off, the output can
be enabled and disabled using this function. This func-
tion also can be used for output sequence of plural power
modules.
There are two kinds of logic control, negative logic control
and positive logic control, depend on the option selected.
ON/OFF control circuit is on the primary side (the input
side). For secondary control, isolation can be achieved
through the use of an opto-coupler or relay.
Notes
Standard Negative
/Toption
/Poption
/PToption
） 1. When ON/OFF control function is not used for the
2. When ON/OFF control function is not used for the
3. When using long wiring, for prevention of noise, at-
4. At L level, maximum source current from CNT termi-
5. The maximum CNT terminal voltage is 35V.
Standard and /T option, CNT terminal should be
shorted to –Vin terminal.
/P option and /PT option, CNT terminal should be
opened.
tach a 0.1µF capacitor between CNT terminal and –
Vin terminal.
nal to –Vin terminal is 0.5mA
Fig.9-2 Remote Sensing is Not in Use
TRM
＋V
＋S
−S
−V
Positive
Fig.9-1 Remote Sensing is in Use
TRM
TRM
Logic
Logic
Logic
＋V
＋S
−S
−V
Transistor, Relay
or Equivalent
Fig.10-1 CNT Connection (1)
+
Stabilize the output voltage
at load terminals
CNT Terminal Level to -Vin Terminal Output status
Stabilize the output boltage
at output terminals
H Level (4V≦H≦35V) or Open
H Level (4V≦H≦35V) or Open
L Level (0V≦L≦0.8V) or Short
L Level (0V≦L≦0.8V) or Short
+
POWER
MODULE
＋Vin
CNT
−Vin
+
Load
＋
−
Load
＋
−
OFF
OFF
ON
ON
B-193
PAH