Intel EPS1U Benutzerhandbuch

  

The following sections define the input and output signals from the power supply. 

Signals that can be defined as low true use the following convention: 

#

 = low true 

 

STATUS 

The PSON

#

 signal is required to remotely turn on/off the power supply.  PSON

#

 is an active low signal that turns 

on the +3.3 V, +5 V, +12 V, and –12 V power rails.  When this signal is not pulled low by the system, or left open, 
the outputs (except the +5 VSB and Vbias) turn off.  This signal is pulled to a standby voltage by a pull-up resistor 
internal to the power supply.  Refer to Figure 5 for the timing diagram. 

Accepts an open collector/drain input from the system.  
Pull-up to VSB located in power supply. 

ON 

OFF 

0 V 

1.0 V 

2.0 V 

5.25 V 

 

4 mA 

5 ms 

400 ms 

 

50 ms 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

≤

 1.0 V 

PS is 

enabled 

≥

 2.0 V 

PS is 

disabled 

1.0V 

2.0V 

Hysteresis 

≥

 0.3V and/or other de-bounce method 

5.25V 

0V