SSI America EPS2U manual Voltage Regulation Limits, Parameter, Units Tolerance

SSI

EPS2U Power Supply Design Guide, V2.1

6.5Voltage Regulation

STATUS

Required

The power supply output voltages must stay within the following voltage limits when operating at steady state and dynamic loading conditions. These limits include the peak-peak ripple/noise specified in Section 5.8. All outputs are measured with reference to the return remote sense (ReturnS) signal. The 5 V, 12V1, 12V2, 12V3, –12 V and 5 VSB outputs are measured at the power supply connectors referenced to ReturnS. The +3.3 V is measured at its remote sense signal (3.3VS) located at the signal connector.

Table 18: Voltage Regulation Limits

	Parameter	MIN	NOM	MAX	Units	Tolerance
	+3.3 V	+3.20	+3.30	+3.46	Vrms	+5/-3%
	+5 V	+4.80	+5.00	+5.25	Vrms	+5/-4%
	+12V1	+11.52	+12.00	+12.60	Vrms	+5/-4%
	+12V2	+11.52	+12.00	+12.60	Vrms	+5/-4%
	+12V3	+11.52	+12.00	+12.60	Vrms	+5/-4%
	-12 V	-11.40	-12.20	-13.08	Vrms	+9/-5%
	+5 VSB	+4.85	+5.00	+5.25	Vrms	+5/-3%
STATUS
Optional

Some system applications may require tighter regulation limits on the +5 V output. The optional regulation limits are shown below.

Table 19: Optional +5V Regulation Limits

Parameter	MIN	NOM	MAX	Units	Tolerance
+5 V	+4.85	+5.00	+5.25	Vrms	+5/-3%

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