L6701 STMicroelectronics, L6701 Datasheet - Page 23

• Manufacturer Part Number: L6701
• Description: IC CTRLR 3PH VR10/9/K8 PWRSO-36
• Manufacturer: STMicroelectronics

Specifications of L6701

• Applications: Controller, Intel VR9, VR10, K8
• Voltage - Input: 12V
• Number Of Outputs: 3
• Voltage - Output: 0.8 ~ 1.85 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 36-PowerSOIC
• Output Voltage: 0.8 V to 1.85 V
• Output Current: 1.5 A
• Switching Frequency: 110 KHz
• Mounting Style: SMD/SMT
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: 0 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

L6701
and, multiplied by three, sourced by the FB pin (I
the desired load-line slope.
As before, the voltage positioning equations results (See
As a consequence:
The device forces I
R
then given by (Offset disabled):
Where R
whole power supply can be then represented by a "real" voltage generator with an equivalent
output resistance R
R
follow:
where R
Table 9
current sense.
Figure 9.
FB
FB
implementing the load regulation dependence. The output characteristic vs. load current is
resistor can be then designed according to the Load-Line (R
V
O UT
contains a quick-reference guide to design applications with typical and/or differential
PHASE1
PHASE2
PHASE3
D
LLDIFF
is typically designed to have I
=
Fully Differential Load-Line Current-Reading (pat. pend.)
VID R
is the resulting differential load-line resistance implemented by the system. The
–
DROOP
LLDIFF
CS+
FB
⋅
------------ -
DCR
and a voltage value of VID.
I
= I
DROOP
L
I
L1
L2
L3
CS
CS
C
C
C
x3, proportional to the read current, into the feedback resistor
PH
PH
PH
=
=
R
=
R
I
DCR1
DCR2
DCR3
O UT
PH
FB
VID 3 R
⋅
CS
=
⋅
C
--------------------------------------------
1
–
PH
= 35µA at the maximum output current (OCP).
R
--------------------- -
1
+
LL DIFF
+
s R
⋅
=>
3
s L
⋅
R
R
R
D
D
D
DROOP
⋅
FB
I
PH
CS
Fully Differential Current Reading
⁄
⋅
⋅
DCR
DCR
------------ - I
CS-
------------ -
DCR
⋅
V
R
=
R
C
I
OUT
CS
). R
D
D
PH
I
Figure
O UT
x 3
⋅
FB
.
⋅
O UT
DCR
------------ -
I
DROOP
for Load-Line
R
gives the final gain to program
⋅
DCR
------------ -
D
9):
R
LLDIFF
=
D
10 Output Voltage Positioning
VID R
FB
R
) specifications as
F
R
–
FB
C
L LDIFF
F
COMP
⋅
I
OUT
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