Figure 61. Turn On/Off Timing (Power Supply Signals); Table 80. Turn On/Off Timing - Intel BB5520UR Technical Product Specification

Intel® Server Boards S5520HC, S5500HCV, and S5520HCT TPS
Item
Tsb_on_delay Delay from AC being applied to 5 VSB being within
regulation.
Tac_on_delay Delay from AC being applied to all output voltages being
within regulation.
Tvout_holdup Time all output voltages stay within regulation after loss of
AC.
Tpwok_holdup Delay from loss of AC to de-assertion of PWOK
Tpson_on_delay Delay from PSON# active to output voltages within
regulation limits.
Tpson_pwok Delay from PSON# deactivate to PWOK being de-asserted.
Tpwok_on Delay from output voltages within regulation limits to PWOK
asserted at turn on.
Tpwok_off Delay from PWOK de-asserted to output voltages (3.3 V, 5
V,
12 V, and -12 V) dropping out of regulation limits.
Tpwok_low Duration of PWOK being in the de-asserted state during an
off/on cycle using AC or the PSON signal.
Tsb_vout Delay from 5 VSB being in regulation to O/Ps being in
regulation at AC turn on.
T5VSB_holdup Time the 5 VSB output voltage stays within regulation after
loss of AC.
AC Input
Vout
T
AC_on_delay
T
sb_on_delay
PWOK
5VSB
T
sb_vout
PSON
AC turn on/off cycle
Revision 1.8

Table 80. Turn On/Off Timing

Description
T
pwok_on
T
pwok_holdup
T
5VSB _ holdup

Figure 61. Turn On/Off Timing (Power Supply Signals)

Intel order number E39529-013
T
vout_holdup
T
pwok_low
T
T
pwok_off
sb_on_delay
Design and Environmental Specifications
Minimum Maximum
N/A 1500
N/A 2500
21 N/A
20 N/A
5 400
50
100 500
1 N/A
100 N/A
50 1000
70 N/A
T
pwok_on
T
pson_on_delay
PSON turn on/off cycle
Units
ms
ms
ms
ms
ms
ms
ms
ms
ms
ms
ms
T
pwok_off
T
pson_pwok
135