SSI America EPS2U manual Output Voltage Timing Turn On/Off Timing

SSI

EPS2U Power Supply Design Guide, V2.1

Vout

	V1	10% Vout
	V2
	V3
	V4
		Tvout_rise		Tvout_off
		Tvout_on
		Figure 2: Output Voltage Timing
		Table 24: 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	100		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.
		- 22 -