pth12050 Astec Powe, pth12050 Datasheet - Page 10

• Manufacturer Part Number: pth12050
• Description: Pth05020 5vin Single
• Manufacturer: Astec Powe

8.3 Thermal Test Set-up
All of the data was taken with the converter soldered to a test board
which closely represents a typical application. The test board is a
1.6mm, eight layer FR4 pcb with the inner layers consisting of 2oz
power and ground planes. The top and bottom layers contain a
minimal amount of metalisation. A board to board spacing of 1 inch
was used. The data represented by the 0m/s curve indicate a
natural convection condition i.e. no forced air. However, since the
thermal performance is heavily dependent upon the final system
application, the user needs to ensure the thermal reference point
temperatures are kept within the recommended temperature rating.
It is recommended that the thermal reference point temperatures are
measured using either AWG #36 or #40 gauge thermocouples or an
IR camera. In order to comply with stringent Artesyn de-rating
criteria, the ambient temperature should never exceed 85°C. Please
contact Artesyn Technologies for further support.
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File Name: an_pth05020.pdf Rev (05): 21 Dec 2005
9. Use in a Manufacturing Environment
9.1 Recommended Land Pattern
It is recommended that the customer uses a solder mask defined
land pattern similar to that shown in Figures 12 and 13.
Power pin connection should utilize four or more vias to the interior
power plane of 0.025 (0.63) I.D. per input, ground an doutput pin (or
the electrical equivalent.
As a surface-mount power component, interconnection to internal
power planes will typically be required. This is accomplished by
placing a number of vias between the SMT pad and the relevant
plane. the number and exact location of these vias should be
determined based on electrical resistivity, current flow and thermal
requirements.
Figure 13 - Recommended Land Pattern (Through - Hole Model)
Figure 14 - Recommended Land Pattern (Surface Mount Model)
(2.03)
(2.03)
0.080
0.080
Recommended
keep Out Area
Recommended
keep Out Area
PTH05020 Single Series | Application Note 156
0.125 (3.18)
0.125 (3.18)
2
2
1
1
(12.70)
(12.70)
0.125 (3.18)
0.125 (3.18)
0.500
0.500
10
10
3
3
1.535 (38.99)
1.535 (38.99)
4
4
9
9
5
5
8
8
0.625 (15.88)
0.625 (15.88)
ø
ø
Paste screen opening: 0.80 (2.03 to 0.85 (2.16)
Paste screen thickness: 0.006 (0.150
0.055 (1.40) 10 Places
0.085 (2.16) 10 Places
7
6
7
6
(2.03)
(2.03)
(19.05)
(19.05)
0.080
0.080
0.750
0.750
(23.11)
(23.11)
0.910
0.910