⑦

3.5.5. Dynamic load response time

The following shall apply to the 3.3 V, 5 V, and 12 V outputs:

Output voltage for each output shall recover to within 5 % of its steady state level in less

than 1 ms under the following conditions:

AC INPUT VOLTAGE: 90VAC ~ 264VAC

Repetition rate of 100Hz with 50 % duty cycle

OUTPUT

Step Load Size

Load Slew Rate

+3.3V

75% to 100% to 75% load

0.5 A/

+5V

75% to 100% to 75% load

0.5 A/

+12V

75% to 100% to 75% load

0.5 A/

3.5.6. Remote On/Off Control

The main outputs of this power supply (3.3V,5V,12V,-12V) shall be energized when input

signal*PSON is active. *PSON is an active low TTL compatible signal referenced to the +5V

standby common. This input signal shall be an open collector signal capable of sinking a

minimum of 4mA. When *PSON becomes inactive, the main outputs shall be disabled.

Power on

Power off

PSON

LOW (0.8V max)

HI (2V max)

3.5.7. Power good signal

The system shall have an active high TTL compatible signal capable of sinking 1mA and

sourcing 100uA. The signal shall become active within 100 to 500 ms from the instant +5V

output reaches a steady state level within the specified regulation limits. It shall become

inactive at least 1 ms before +5V drops to below the lower regulation limit.