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AN2787 データシート(PDF) 35 Page - STMicroelectronics

部品番号 AN2787
部品情報  Monolithic VR demonstration board for chipset
PDF  37 Pages
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メーカー  STMICROELECTRONICS [STMicroelectronics]
ホームページ  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN2787 データシート(HTML) 35 Page - STMicroelectronics

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AN2787
STEVAL-ISA050V1 evaluation tests
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10.10
Thermal behavior
The device temperature is mainly influenced by LDO VTT current. The typical working
currents are shown in Table 3.
VTT is supplied by VDDQ and the device (average) temperature is 54.5 °C.
Figure 41.
PM6641 demonstration board surface temperature when loaded with
typical currents, Tamb = 23 °C, VIN = 3.3 V, FSW = 660 kHz
Table 3.
Average working currents for each rail
Rail
Current [A]
VDDQ (1.8 V)
1.35
1.5 V
1.25
1.05 V
1.75
VTT (0.9 V)
0.3



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