Intel SC5299UP SC5299UPNA Manual Do Utilizador

kHz at duty cycles ranging from 10%-90%. The load transient repetition rate is only a test 
specification. The 

   step load may occur anywhere between the MIN load and MAX load 

conditions. 

Output 

Max    Step Load Size 

Max Load Slew Rate 

Test capacitive Load 

+ 3.3VDC 

5.0A  

0.25 A/

  s 250 

  F 

+ 5VDC 

4.0A  

0.25 A/

  s 400 

  F 

+12VDC (12V1/2/3/4/5) 

See the Power Supply specification for details. 

- 12VDC 

  F 

+5VSB 

See the the Power Supply specification for details. 

 

2.4.3.1 

DC/DC Converter Capacitive Loading 

All outputs of the DC/DC converter are stable and meet all requirements with the following 
capacitive loading ranges. 

Converter Output 

MIN 

MAX 

Units 

+3.3VDC 250 

6,800 

  F 

+5VDC 400 

4,700 

  F 

-12VDC 1 

350 

  F 

Note: Refer to the Power Supply specification for the equivalent data on +12V and +5VSB output. 

 

2.4.3.2 

DC/DC Converters Closed Loop Stability 

Each DC/DC converter is unconditionally stable under all line/load/transient load conditions, 
including capacitive load ranges. A minimum of 45 degrees phase margin and –10dB-gain 
margin is required.  

2.4.3.3 

Common Mode Noise 

The common mode noise on any output does not exceed 350 mV peak-peak over the frequency 
band of 10 Hz to 30 MHz.