ZXLD1370

Document number: DS32165 Rev. 6 - 2

24 of 40

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December 2016

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ZXLD1370

Junction Temperature Estimation

Finally, the ZXLD1370 junction temperature can be estimated using the following equations:

Total supply current of ZXLD1370:

Power consumed by ZXLD1370:

power MOSFET. Moreover, the part of thermal resistance between case and ambient depends on the PCB characteristics.

0

0.5

1

1.5

2

2.5

-40

-25

-10

5

20

35

50

65

80

95

110

125

Ambient temperature (°C)

Figure 27 Power Derating Curve for ZXLD1370 Mounted on Test Board According to JESD51