L6714 STMicroelectronics, L6714 Datasheet - Page 44

• Manufacturer Part Number: L6714
• Description: IC CTRLR 4PH W/DRIVERS 64-TQFP
• Manufacturer: STMicroelectronics

Specifications of L6714

• Applications: Controller, Intel VR10, VR11, AMD CPU
• Voltage - Input: 12V
• Number Of Outputs: 4
• Voltage - Output: 0.3 ~ 1.6 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 64-TQFP Exposed Pad, 64-eTQFP, 64-HTQFP, 64-VQFP
• Mounting Style: SMD/SMT
• Case: QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Soft start
15.2
44/70
Figure 15. Soft-start time for Intel mode.
AMD mode
Once L6714 receives all the correct supplies and enables, and AMD Mode has been
selected, it initiates the Soft-Start by stepping the reference from zero up to the programmed
VID code
oscillator programmed by the OSC pin, SSOSC pin is not applicable in this case. The Soft-
Start time results then
where T
programmed by OSC pin. Protections are active during Soft-Start, UVP is enabled after the
reference reaches 0.6V while OVP is always active with the fixed 1.800V threshold (or the
programmed V
SS
(See Figure
is the time spent to reach V
8
7
6
5
4
3
2
1
0
dV
----------------- -
1
OVP
dT
OUT
).
=
14); the clock now used to step the reference is the same as the main
3.125
(See Figure
Time to Vboot
Time to 1.6000V
F
SW
10
Rssosc [kOhms] vs. SGND
kkHz
16):
SS
and F
T
SS
SW
=
------------------------------------------------- -
3.125
is the main switching frequency
100
V
F
SS
SW
kHz
1000
L6714