PAQ50S48-1R8 TDK Corporation, PAQ50S48-1R8 Datasheet - Page 18

• Manufacturer Part Number: PAQ50S48-1R8
• Description: LAMBDA PART
• Manufacturer: TDK Corporation

Specifications of PAQ50S48-1R8

• Rohs Compliant: YES

PAQ
B-242
PAQ
 Series Operation
Series operation is possible for PAQ-48 series.
Connections shown in fig.12-1 and fig.12-2 is possible.
 Operating Ambient Temperature
According to ambient temperature, output load should de-
rated accordingly (refer to Mounting Method & Terminal
Condition). There is no restriction on mounting direction
but there should be enough consideration for airflow so
that heat does not accumulate around the power module
vicinity. Determine external components configuration and
mounting direction on PCB such that air could flow through
power module at forced air cooling or convection cooling.
For better reliability, derating of ambient temperature is
recommended. For details on deraing, refer to “Mounting
Method & Thermal Condition”
 Operating Ambient Humidity
Take note that moisture could lead to power module abnor-
mal operation or damage.
 Storage Ambient Temperature
Abrupt temperature change would cause condensation
built-up that leads to poor solderability of terminals of the
power module.
 Storage Ambient Humidity
High temperature and humidity can cause the terminals
on the module to oxidize. The quality of the solder will be-
come worse.
 Cooling Method
Forced air cooling is recommended. Convection cooling is
also possible. For the details of derating, refer to “Mounting
Method and Thermal Condition”
Fig.12-1 Series Operation for High Output
-S48
＋S
＋V
−V
−S
＋S
＋V
−V
−S
＋S
＋V
−V
−S
＋S
＋V
−V
−S
Fig.12-2 ±Output Series Operation
Voltage Application
+
+
+
+
Load
＋
−
＋
−
＋
−
Load
Load
 Ambient Temperature vs. Output Voltage Drift
Temperature coefficient is defined as the rate of voltage
change when ambient temperature is changed during op-
eration.
 Withstand Voltage
This power module is designed to have a withstand voltage
of 1.5kVDC between input and output. When conducting
withstand voltage test during incoming inspection, be sure
to apply DC voltage. Also, set the current limit value of the
withstand voltage testing equipment to 10mA. Be sure to
avoid conducting test with AC voltage because this would
cause power module damage. Furthermore, avoid throw in
or shut off of the testing equipment when applying or when
shutting down the test voltage. Instead, gradually increase
or decrease the applied voltage. Take note especially not
to use the timer of the test equipment because when the
timer switches the applied voltage off, impulse voltage
which has several times the magnitude of the applied volt-
age is generated causing damage to the power module.
Short the output side as shown in the diagram below.
 Insulation Resistance
Use DC insulation tester (MAX 500V) between output and
input. Insulation resistance value is
100MΩ and above at 500VDC applied voltage. Make
sure that during testing, the isolation testers does not
produce a high pulse when the applied voltage is varied.
Ensure that the tester is fully discharged after the test.
 Vibration
Vibration of power module is defined in case of mounting
on PCB.
 Shock
Value for the conditions of out shipping and packaging.
Fig.19-1 Withstand Voltage Test for Input-Output
Isolation
Tester
Voltage tester
Withstand
1.5kVDC 1minute (10mA)
Fig.20-1 Isolation test
・All specifications are subject to change without notice.
＋Vin
CNT
−Vin
＋Vin
−Vin
CNT
TRM
＋V
−V
＋S
−S
TRM
＋V
−V
＋S
−S