參數(shù)資料
型號(hào)： L6711
廠商： STMICROELECTRONICS
元件分類： 穩(wěn)壓器
英文描述： 2 A SWITCHING CONTROLLER, 178 kHz SWITCHING FREQ-MAX, PQFP48
封裝： 7 X 7 MM, 1 MM HEIGHT, TQFP-48
文件頁(yè)數(shù)： 41/50頁(yè)
文件大?。?/td> 679K
代理商： L6711
Obsolete
Product(s)
- Obsolete
Product(s)
Layout guidelines
L6711
46/50
18.3
Current sense connections.
Remote Buffer: The input connections for this component must be routed as parallel nets
from the FBG/FBR pins to the load in order to compensate losses along the output power
traces and also to avoid the pick-up of any common mode noise. Connecting these pins in
points far from the load will cause a non-optimum load regulation, increasing output
tolerance.
Current Reading: The Rg resistors have to be placed as close as possible to the CSx- and
CSx+ pins in order to limit the noise injection into the device; this is still valid also for the
Rg(RC)-Cg network used when sensing current across the inductor. The PCB traces
connecting these resistors to the reading point must use dedicated nets, routed as parallel
traces in order to avoid the pick-up of any common mode noise.
Figure 24.
Device orientation (left) and sense nets routing (right: red for Lsense,
black for LSsense)
It's also important to avoid any offset in the measurement and, to get a better precision, to
connect the traces as close as possible to the sensing elements. Symmetrical layout is also
suggested.
Small filtering capacitor can be needed between VOUT and SGND on the CSx- line, placed
near the controller, allowing higher layout flexibility in the current sense connection.
HS
1
LS
1
HS
2
LS
2
LS
3
HS
3
VCCDR
V
ias
t
o
P
G
N
D
pl
ane
V
ias
t
o
P
G
N
D
pl
ane
T
o
r
egu
la
te
d
Out
p
ut
C
T
o
In
du
ctor
(o
rS
ens
e
Res
is
tor
)
To
L
S
Mo
sf
e
t
(o
rS
ens
e
Res
is
tor
)
CS3
+
R
CS3
-
CS2
+
CS
2
-
CS
1
+
CS
1
-
R
C
R
相關(guān)PDF資料
PDF描述
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
L6711_06 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:3 Phase controller with dynamic VID and selectable DACs
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L6712 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:TWO-PHASE INTERLEAVED DC/DC CONTROLLER
L6712_05 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:TWO-PHASE INTERLEAVED DC/DC CONTROLLER
L6712A 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:TWO-PHASE INTERLEAVED DC/DC CONTROLLER
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