SilverStone SST-OP850-P [6/12] Op850 p manual 05 pdf
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SilverStone SST-OP850-P [6/12] Op850 p manual 05 pdf

SilverStone SST-OP850-P [6/12] Op850 p manual 05 pdf
05
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_low
Tvout_holdup
AC Off AC On
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.
Table 13 – PWOK Signal Characteristic
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.
Accepts an open collector/drain input from the system.
Pull-up to VSB locted in power supply.
Power ON
Power OFF
Signal Type
PSON# = Low
PSON# = High
50% of maximum
>80%
100% of maximum
>80%
20% of maximum
>80%
Loading
Minimum
Figure 2 : Turn On/Off Timing

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