MIC2595 Micrel Semiconductor, MIC2595 Datasheet - Page 24

• Manufacturer Part Number: MIC2595
• Description: Mic2589/mic2595 Single-channel, Negative High-voltage Hot Swap Power Controllers/sequencers
• Manufacturer: Micrel Semiconductor

December 2005
of the t
intersection of the Single Pulse curve. This point is
the normalized transient thermal impedance (Z
and the effective transient thermal impedance is the
product of R
example. Solving Equation 3,
T
J
(transient) = (201.6W) × (0.4°C/W) × 0.9 = 72.6°C
FLT
, and read up the Y-axis scale to find the
θ(J-C)
and the multiplier, 0.9 in this
Figure 8. Transient Thermal Impedance – SUM110N10-09
θ(J-C)
),
24
Finally, add this result to the maximum steady state
junction
determine the estimated maximum transient junction
temperature of the MOSFET:
74°C + 72.6°C = 146.6°C, which is safely under the
specified maximum junction temperature of 200°C for
the SUM110N10-09.
temperature
calculated
T
J
(max.transient) =
previously
[phone]
M9999-120505
to