Technical Product Specification

Intel® Server Boards S5520HC, S5500HCV, and S5520HCT TPS Design and Environmental Specifications
Revision 1.9
Intel order number E39529-013
135
Table 80. Turn On/Off Timing
Item
Description
Minimum
Maximum
Units
Tsb_on_delay
Delay from AC being applied to 5 VSB being within
regulation.
N/A
1500
ms
Tac_on_delay
Delay from AC being applied to all output voltages being
within regulation.
N/A
2500
ms
Tvout_holdup
Time all output voltages stay within regulation after loss of
AC.
21
N/A
ms
Tpwok_holdup
Delay from loss of AC to de-assertion of PWOK
20
N/A
ms
Tpson_on_delay
Delay from PSON# active to output voltages within
regulation limits.
5
400
ms
Tpson_pwok
Delay from PSON# deactivate to PWOK being de-asserted.
50
ms
Tpwok_on
Delay from output voltages within regulation limits to PWOK
asserted at turn on.
100
500
ms
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.
1
N/A
ms
Tpwok_low
Duration of PWOK being in the de-asserted state during an
off/on cycle using AC or the PSON signal.
100
N/A
ms
Tsb_vout
Delay from 5 VSB being in regulation to O/Ps being in
regulation at AC turn on.
50
1000
ms
T5VSB_holdup
Time the 5 VSB output voltage stays within regulation after
loss of AC.
70
N/A
ms
AC Input
Vout
PWOK
5VSB
PSON
T
sb_on_delay
T
AC_on_delay
T
pwok_on
T
vout_holdup
T
pwok_holdup
T
pson_on_delay
T
sb_on_delay
T
pwok_on
T
pwok_off
T
pwok_off
T
pson_pwok
T
pwok_low
T
sb_vout
AC turn on/off cycle
PSON turn on/off cycle
T
5VSB_holdup
Figure 61. Turn On/Off Timing (Power Supply Signals)