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EPS1U Power Supply Design Guide, V1.1
6.7 Capacitive Loading
STATUS
Required
The power supply shall be stable and meet all requirements with the following capacitive loading ranges.
Table 13: Capacitive Loading Conditions
Output MIN MAX Units
+3.3 V 10 6,800
µF
+5 V 10 4,700
µF
+12 V 10 11,000
µF
-12 V 1 350
µF
+5 VSB 1 350
µF
6.8 Ripple / Noise
STATUS
Required
The maximum allowed ripple/noise output of the power supply is defined in Table 14 below. This is measured
over a bandwidth of 0 Hz to 20 MHz at the power supply output connectors. A 10 µF tantalum capacitor in
parallel with a 0.1 µF ceramic capacitor are placed at the point of measurement.
Table 14: Ripple and Noise
+3.3 V +5 V +12 V -12 V +5 VSB
50 mVp-p 50 mVp-p 120 mVp-p 120 mVp-p 50 mVp-p