Technical Product Specification

Power Sub-System Intel
®
Server Chassis H2000 Family TPS
Revision 1.0
Intel order number: G59059-001
22
Item
Description
Min.
Max.
Units
asserted at turn on.
T
pwok_off
Delay from PWOK de-asserted to output voltages dropping out
of regulation limits.
1
ms
T
pwok_low
Duration of PWOK being in the de-asserted state during an
off/on cycle using AC or the PSON signal.
100
ms
T
sb_vout
Delay from 12VSBbeing in regulation to O/Ps being in
regulation at AC turn on.
50
1000
ms
T
12VSB_holdup
Time the 12VSBoutput voltage stays within regulation after loss
of AC.
70
ms
Note: * The 12V
STB
output voltage rise time shall be from 1.0ms to 25ms.
AC Input
Vout
PWOK
12Vsb
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 12. Turn On/Off Timing (Power Supply Signals)
3.4 Power Supply Cold Redundancy Support
Power supplies that support cold redundancy can be enabled to go into a low-power state (that
is, cold redundant state) in order to provide increased power usage efficiency when system
loads are such that both power supplies are not needed. When the power subsystem is in Cold
Redundant mode, only the needed power supply to support the best power delivery efficiency is
ON. Any additional power supplies; including the redundant power supply, is in Cold
Standby state.
Each power supply has an additional signal that is dedicated to supporting Cold Redundancy;
CR_BUS. This signal is a common bus between all power supplies in the system. CR_BUS is
asserted when there is a fault in any power supply OR the power supplies output voltage falls