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qd0090's avatar
qd0090
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5 years ago
Solved

can i trust Fmax ?

i use 10m02DCV36C8G, my clock is 96MHz(generate by pll) i constraint the clk in timequest, and the time quest shows in slow 1200mV 85C model the Fmax is 119.6MHz can i trust it ? and i...
qd0090's avatar
qd0090
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5 years ago

1. does it means

in condition of slow 1200mV 85C

the design can reach Fmax? (which is 119.6 MHz)

in this case, there is still margin for my design(119.6MHz>96MHz), can the 10m02DCV36C8G work in higher temperature? like 90C?

2. if the what will happen if the Tj>85C?

3. since the Tj is not the environment temperature

how can i know the Tj?

i mean the Tj may > 85C when environment temperature is 60C

kelvinly_steris's avatar
kelvinly_steris
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5 years ago

You can set the operating conditions in the Timing Analyzer to test how it works at your higher temperature, at least on my setup there's a default set at 100 C that might be useful

You can use the thermal resistance of the package ( https://www.intel.com/content/www/us/en/programmable/support/literature/lit-index/lit-pkg/thermal.html?type=thermal&family=MAX_10 ) plus the power consumption estimate, or measure current consumption in operation, to calculate the junction temperature