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AN1703 Datasheet(PDF) 3 Page - STMicroelectronics |
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AN1703 Datasheet(HTML) 3 Page - STMicroelectronics |
3 / 22 page AN1703 - APPLICATION NOTE 3/22 What we now have to compute is the TJ value since TC is also an input data related to ambient or case temperature. To detect the arising junction temperature (TJ), we look at the variation of the forward drop of the drain-source diode, since this variation is proportional to the change in junction temperature. 3. D2PAK The D2PAK is a surface mounting version of the standard TO-220 package, with the lead formed and the tab removed. It has been designed to achieve the high quality and reliability levels required by end users in the automotive industry. Figure 2 shows D2PAK and its recommended footprint: Figure 2: D2PAK and its recommended footprint (all dimensions are in mm) Figure 3 shows a graph of RTHJ-PCB versus drain pad area from minimum recommended footprint to 10cm2: Figure 3: RTHJ-PCB versus drain pad area for D 2PAK 30 35 40 45 50 55 60 65 0 100 200 300 400 500 600 700 800 900 1000 FR-4, 2 oz copper board Minimum recommended footprint R THJ-A |
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Similar Description - AN1703 |
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