FAQ:
How can I calculate minimum rise time for my APS power supply?
The minimum rise time is directly related to the slew rate capability of the power supply. The minimum rise time varies by model and priority mode, and can be calculated as follows:
For voltage, the minimum rise time can be calculated as (~20E-6 * Vrating) in V/s.
For example, the slew rate resolution on a 40V model is 0.8 mV/s. This allows for a full-scale (0 to 40V) slew for as long as 13.9 hours. To put it another way, the result is a slew rate resolution better than 1% for slew settings ≥ (~2E-3 * Vrating) V/s, or 80 mV/s in the 40 V model, which corresponds to 0 to 40 V slew times ≤ 8.3 minutes.
For current, the minimum rise time can be calculated as (~36E-6 * Irating) in A/s.
For example, the current slew rate resolution on a 40V, 1 kW model is 0.9 mA/s. This allows for a full-scale (0 to 25 A) slew for as long as 7.82 hours.
To put it another way, the result is a slew rate resolution of better than 1% for slew settings ≥ (~3.6E-3 * Irating) A/s, or 90 mA/s in the 40 V, 1 kW model, which corresponds to 0 to 25 A slew times ≤ 4.7 minutes.
Applies to: N6950A, N6951A, N6952A, N6953A, N6954A, N6970A, N6971A, N6972A, N6973A, N6974A, N6976A, N6977A
Applies to: N7950A, N7951A, N7952A, N7953A, N7954A, N7970A, N7971A, N7972A, N7973A, N7974A, N7976A, N7977A
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