Intel ERP2U manual Turn On/Off Timing, Recommended Description

					SSI
			ERP2U Power Supply Design Guide, V1.0
	Table 19: Turn On/Off Timing
Item	Description	MIN		MAX	UNITS
Tsb_on_delay	Delay from AC being applied to 5 VSB being			1500	ms
	within regulation.
T ac_on_delay	Delay from AC being applied to all output voltages			2500	ms
	being within regulation.
Tvout_holdup	Time all output voltages stay within regulation	18			ms
	after loss of AC.
Tpwok_holdup	Delay from loss of AC to deassertion of PWOK.	17			ms
Tpson_on_delay	Delay from PSON# active to output voltages within	5		400	ms
	regulation limits.
T pson_pwok	Delay from PSON# deactive to PWOK being			50	ms
	deasserted.
Tpwok_on	Delay from output voltages within regulation limits	200		1000	ms
	to PWOK asserted at turn on.
T pwok_off	Delay from PWOK deasserted to output voltages	1			ms
	(3.3 V, 5 V, 12 V, -12 V) dropping out of regulation
	limits.
Tpwok_low	Duration of PWOK being in the deasserted state	100			ms
	during an off/on cycle using AC or the PSON#
	signal.
Tsb_vout	Delay from 5 VSB being in regulation to O/Ps	50		1000	ms
	being in regulation at AC turn on.

STATUS

Recommended

Item	Description	MIN	MAX	UNITS
Tvout_holdup	Time all output voltages stay within regulation	21		ms
	after loss of AC.
Tpwok_holdup	Delay from loss of AC to deassertion of PWOK.	20		ms
Tsb_holdup	Time 5VSB output voltage stays within regulation	70		ms
	after loss of AC.

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