L6713ATR View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
L6713ATR
STMicroelectronics
'L6713ATR' PDF : 64 Pages View PDF
Soft-start
L6713A
Figure 17. Soft-start time for Intel mode when using RSSOSC, diode versus SSEND
7
6
Time to Vboot
Time to 1.6000V
5
4
3
2
1
0
1
10
100
1000
Rssosc [kOhms] vs. SSEND through sognal diode
16.1.2
SS/LTB/AMD connections when using LTB™ gain < 2
When using LTB™ gain <2, the equivalent RSSOSC resistance is composed by the sum of
R1+R2) because until the soft-start is not finished the Q transistor is OFF (See Figure 18).
Figure 18. SS/LTBG/AMD connections for INTEL mode, when using LTB™ gain < 2
VPull-Up(1.2V)
SS_END
SS/LTBG/ AMD
RPull-Up(1k)
to SSEND Logic
Q
Rb(10k)
R1
RSSOSC=R1+R2
R2
RSSOSC[kΩ] = T2[μs] ⋅ 4.9783 ⋅ 10–2
TSS[μs]
=
⎧
⎪
1075[
μs
]
+
⎪
⎨
⎪
⎪
⎩
R-----S---S----O----S---C----[---k---Ω-----]
5.3816 ⋅ 10–2
⋅
VSS
R-----S---S----O----S---C----[---k---Ω-----]
5.3816 ⋅ 10–2
⋅
[VBOOT
+
(VBOOT
–
VSS)]
if(VSS > VBOOT)
if(VSS < VBOOT)
where TSS is the time spent to reach the programmed voltage VSS and RSSOSC the resistor
connected between SS/LTBG/AMD and SGND (RSSOSC = R1 + R2) in kΩ.
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