SilverStone SST-ZM1200M [6/12] En zm1200m manual 06

SilverStone SST-ZM1200M [6/12] En zm1200m manual 06
05
Loading
Minimum
100% of maximum
78%
50% ofmaximum
80%
20% of maximum
78%
Accepts an open collector/drain input
from the system. Pull-up to VSB locted
in power supply.
Signal Type
PSON# = High Power OFF
PSON# = Low Power ON
Table 13 - PWOK Signal Characteristic
3.4 Remote On/Off Control : PSON#
The PSON# signal is required to remotely turn on/off the power supply. PSON# is an active
low signal that turns on the +5V, +3.3V, +12V and -12V power rails. When this signal is not
pulled low by the system, or left open, the outputs (except the +5VSB and V bias) turn off.
This signal is pulled to a standby voltage by a pull-up resistor internal to the power supply.
3.5 Efficiency
The efficiency is specified at 50% and 20% loading conditions to help reduce system power
consumption at typical system loading conditions.
3.6 +5VSB (Standby)
The +5VSB output is always on (+5V Standby) when AC power is applied and power switch
is turned on.
The +5VSB line is capable of delivering at a maximum of 4A for PC board circuit to operate.
Figure 2 : Turn On/Off Timing
PWOK
Tpson_pwok
+5VSB
PSON#
Vout
AC Input
Tsb_on-delay
Tac_on-delay
Tpwok_on
Tsb_vout
AC turn on/off cycle
Tsb_holdup
Min.>70mS
PSON turn on/off cycle
Tpson_on_delay
Tpwok_off
Tpwok_holdup
Tsb_on-delay Tpwok_on
Tpwok_off
Tpwok_low
Tvout_holdup
AC Off AC On

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