L6713A STMicroelectronics, L6713A Datasheet - Page 44

• Manufacturer Part Number: L6713A
• Description: IC CTRLR 2/3PH W/DRIVERS 64-TQFP
• Manufacturer: STMicroelectronics

Specifications of L6713A

• Applications: Controller, Intel VR10, VR11, AMD CPU
• Voltage - Input: 12V
• Number Of Outputs: 3
• 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
• Output Current: 2 A
• Mounting Style: SMD/SMT
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: 0 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Soft-start
16.1.2
44/64
Figure 17. Soft-start time for Intel mode when using R
SS/LTB/AMD connections when using LTB™ gain < 2
When using LTB™ gain <2, the equivalent R
R
Figure 18. SS/LTBG/AMD connections for INTEL mode, when using LTB™ gain < 2
where T
connected between SS/LTBG/AMD and SGND (R
1
+R
2
T
)
SS
because until the soft-start is not finished the Q transistor is OFF
SS
[
μs
is the time spent to reach the programmed voltage V
to SSEND Logic
]
=
V
Pull-Up
1075 μs
7
6
5
4
3
2
1
0
1
(1.2V)
[
]
+
R
Time to Vboot
Time to 1.6000V
⎧
⎪
⎪
⎨
⎪
⎪
⎩
R
Pull-Up
Rssosc [kOhms] vs. SSEND through sognal diode
SSOSC
R
---------------------------------- - V
R
---------------------------------- -
5.3816 10
5.3816 10
(1k)
SSOSC
SSOSC
SS_END
[
kΩ
⋅
⋅
10
[
[
kΩ
kΩ
]
–
–
=
2
2
]
]
⋅
⋅
T
[
SSOSC
V
2
SS
[
BOOT
μs
R
b
(10k)
] 4.9783 10
SSOSC
⋅
resistance is composed by the sum of
+
Q
(
SS/LTBG/ AMD
V
BOOT
100
= R
⋅
SSOSC
1
–
–
+ R
2
V
SS
SS
R1
R2
2
, diode versus SSEND
) in kΩ.
)
and R
]
R
if V
if V
SSOSC
(
(
SSOSC
(See Figure
SS
SS
=R
1000
1
+R
>
<
2
V
V
the resistor
BOOT
BOOT
L6713A
)
)
18).