SilverStone ST75ZF [9/16] St75zf manual 09

SilverStone ST75ZF [9/16] St75zf manual 09
ZEUS ST75ZFZEUS ST75ZF
08
Signal Type
Accepts an open collector/drain input from the system.
Pull-up to VSB locted in power supply
PSON# = Low
PSON# = Open
Logic level low (Power supply ON)
Logic level low (Power supply OFF)
Source current, Vpson = Low
Power up delay: Tpson_on_delay
PWOK delay : Tpson_pwok
Power ON
Power OFF
MIN
0V
2.0V
5mSec
MAX
1.0V
5.25V
4mA
400mSec
50mSec
Table 13 - PWOK Signal Characteristics
3.8 Overshoot at Turn-on /Turn-off
Any output overshoot at turn on shall be less than 10% of the nominal output value. Any overshoot
shallrecover to within regulation in less than 10ms.
3.9 Efficiency
The minimum power supply system efficiency shall be
80% with maximum efficiency up to 86%,
measured at nominal input voltage 115 V or 230 V and full loading.
3.10 +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 3.0A for PC board circuit to
operate.
4.1 Over Current Protection
This power supply shall have current limit to prevent the +5V, +3.3V, and +12V outputs from
exceeding the values shown in table 14. The current limit shall not trip under maximum continuous
load or peak loading as described in Table 5. The power supply shall latch off if the current exceeds
the limit. The latch shall be cleared by toggling the PSON# signal or by cycling the AC power. The
power supply shall not be damaged from repeated power cycling in this condition. The -12V and
+5VSB outputs shall be shorted circuit protected so that no damage can occur to the power supply.
Protection circuits inside the power supply shall cause only the power supply's main outputs to
shutdown. If the power supply latches off due to a protection circuit tripping, either a AC cycle
OFF for 15 sec, or PSON# cycle HIGH for 1 sec must be able to restart the power supply.
4. Protection

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