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24 Cheetah 15K.7 FC Product Manual, Rev. C
7.2.1 Conducted noise immunity
Noise is specified as a periodic and random distribution of frequencies covering a band from DC to 10 MHz.
Maximum allowed noise values given below are peak-to-peak measurements and apply at the drive power
connector.
7.2.2 Power sequencing
The drive does not require power sequencing. The drive protects against inadvertent writing during power-up
and down.
7.2.3 Current profiles
The +12V and +5V current profiles are shown in the following figures.
Note: All times and currents are typical. See Section 7.2 for maximum current requirements.
Figure 1. Typical ST3600057FC current profiles
+5 V = 250 mV pp from 0 to 20 MHz.
+12 V = 800 mV pp from 100 Hz to 8 KHz.
450 mV pp from 8 KHz to 20 KHz.
250 mV pp from 20 KHz to 5 MHz.