L6714 STMicroelectronics, L6714 Datasheet - Page 43

• 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

L6714
15.1
Note:
Intel mode
If during T
Once L6714 receives all the correct supplies and enables, and Intel Mode has been
selected, it initiates the Soft-Start phase with a T
ramps up to V
waits for T
then ramps up to the programmed value in T
Figure
SSOSC defines the frequency of an internal additional Soft-Start-oscillator used to step the
reference from zero up to the programmed value; this oscillator is independent from the
main oscillator whose frequency is programmed through the OSC pin. SSOSC sets then the
Output Voltage dV/dt during Soft-Start according to the resistor R
SGND. In particular, it allows to precisely programming the start-up time up to V
since it is a fixed voltage independent by the programmed VID. Total Soft-Start time
dependence on the programmed VID results
where T
connected between SSOSC and SGND in k .
Protections are active during Soft-Start, UVP is enabled after the reference reaches 0.6V
while OVP is always active with a fixed 1.24V threshold before V
coming from the VID (or the programmed V
Figure
voltage will ramp to the programmed voltage starting from V
T
14).
14).
SS
SS
3
3
is the time spent to reach the programmed voltage V
s
= 75 sec
the programmed VID selects an output voltage lower than V
BOOT
=
1075 s
= 1.081V (1.100V - 19mV) in T
(typ)
during which the device reads the VID lines. Output voltage will
+
R
SSOSC
------------------------------------ -
5.3816
------------------------------------ -
5.3816
R
R
SSOSC
SSOSC
k
10
10
k
k
=
–
–
2
2
T
OVP
2
4
V
(See Figure
V
SS
with the same slope as before
s
BOOT
) after V
1
= 1ms
2
4.9783
according to the SSOSC settings and
+
V
BOOT
BOOT
(min)
15):
10
BOOT
(See red-dashed line in
delay. After that, the reference
–
–
2
V
BOOT
SS
SS
.
SSOSC
and R
and with the threshold
if V
if V
BOOT
connected vs.
SSOSC
SS
SS
, the output
(See
V
V
the resistor
BOOT
BOOT
BOOT
Soft start
(T
43/70
2
)