Silverstone OP850 SST-OP850 User Manual
Product codes
SST-OP850
OLYMPIA OP850
OLYMPIA OP850
04
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
Figure 2 : Turn On/Off Timing
PSON turn on/off cycle
Tpson_on_delay
Tpwok_off
Tpwok_holdup
Tsb_on-delay
Tpwok_on
Tpwok_off
Tpson_pwok
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.
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.
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.
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
77%
20% of maximum
75%
Loading
Minimum