PAF600F280-28 TDK Corporation, PAF600F280-28 Datasheet - Page 22

• Manufacturer Part Number: PAF600F280-28
• Description: 28V@21.5A
• Manufacturer: TDK Corporation

PAF
B-114
“Thermal Design” .
“Thermal Design” .
PAF
 Operating ambient temperature
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 mount-
ing direction on PCB such that air could flow through the
heatsink at forced cooling and conventional cooling.
By maintaining actual baseplate temperature below 100℃ ,
operation is possible.
For details on thermal design, refer to Application Notes
Note) Maximum baseplate temperature is 100℃. For worst case
For better improvement of power module reliability, derat-
ing of baseplate temperature when using is recommended.
 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 moisture forma-
tion that leads to poor solderability of each terminal of the
power module.
 Storage Ambient Humidity
Take enough care when storing the power module because
rust which causes poor solderability would form in each
terminal when stored in high temperature, high humidity
environment.
 Cooling Method
Operating temperature range is specified by the baseplate
temperature. Therefore, several method of heat dissipation
is possible.
For details on thermal design, refer to ApplicationNotes
 Baseplate Temperature vs.
Output voltage drift is defined as the rate of voltage
change when baseplate temperature only is changed dur-
ing operation.
Output Voltage Drift
operating condition, verify baseplate temperature at mea-
surement point indicated in Fig. 15-1.
500F24
Input Side
Fig.15-1 Temperature Measurement
42mm
20mm
Point of Baseplate
Baseplate View
Output Side
Temperature
Measuring Point
Of Baseplate
 Withstand Voltage
This power module is designed to have a withstand voltage
of 1.5kVDC between input to baseplate, 1.5kVDC between
input to output, 1.5kVDC between the control terminals to
input/output and 500VDC between output to baseplate for
1 minute. 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 equip-
ment when applying or when shutting down the test volt-
age. 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 ap-
plied voltage off, impulse voltage which has several times
the magnitude of the applied voltage is generated causing
damage to the power module.
Short the output side as shown in the diagram below.
Fig.21-3 Withstand Voltage Tester for ON/
Fig.21-2 Withstand Voltage Tester for
Fig.21-1 Withstand Voltage Tester for
Withstand
Voltage tester
Withstand
Voltage tester
Withstand
Voltage Tester
1.5kVDC 1minute (10mA)
1.5kVDC 1minute (10mA)
1.5kVDC 1minute (10mA)
OFF-Input/Output
Input-Baseplate
Input-Output
・All specifications are subject to change without notice.
＋ON/OFF
−ON/OFF
＋Vin
−Vin
Base plate
＋ON/OFF
−ON/OFF
＋Vin
−Vin
Baseplate
＋ON/OFF
−ON/OFF
＋Vin
−Vin
BasePlate
TRM
AUX
TRM
AUX
＋V
−V
IOG
＋S
−S
IOG
TRM
＋V
−V
AUX
＋S
−S
PC
IOG
＋V
−V
PC
＋S
−S
PC