參數(shù)資料
型號(hào)： L6714TR
廠商： 意法半導(dǎo)體
英文描述： 4 phase controller with embedded drivers for Intel VR10, VR11 and AMD 6Bit CPUs
中文描述： 4英特爾VR10，VR11和AMD的6位嵌入式CPU的司機(jī)相控制器
文件頁(yè)數(shù)： 52/70頁(yè)
文件大小： 572K
代理商： L6714TR
Over current protection
L6714
52/70
in this particular situation, the switching frequency for each phase results reduced. The ON
time is the maximum allowed T
ON(max)
while the OFF time depends on the application:
I
I
–
V
OUT
Figure 20. Constant current
The trans-conductance resistor Rg can be designed considering that the device limits the
bottom of the inductor current ripple and also considering the additional current delivered
during the quasi-constant-current behavior as previously described in the worst case
conditions.
Moreover, when designing D-VID compatible systems, the additional current due to the
output filter charge during dynamic VID transitions must be considered.
where
T
OFF
L
------------------------------------
=
f
T
ON max
)
T
OFF
+
--------------------------------------------
=
V
OUT
0.40 V
IN
Constant Current (Exploded)
I
OCP
= 4 x I
OCPx
(I
DROOP
= 140
A)
I
OUT
UVP Threshold
Resulting Out. Char.
I
MAX,tot
Limted-T
ON
Char.
Droop Effect
Q
C
T
ON(max)
T
ON(max)
I
OCPx
I
MAX
I
PEAK
LS ON Skipping
Clock Cycles
T
SW
T
SW
Rg
I
-----------------------------------------------------------------------
R
I
OCTH min
)
)
=
I
OCPx
I
N
)
--------------------------
I
2
-----------
I
-----------------
N
+
–
=
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