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L6714D Datasheet(PDF) 34 Page - STMicroelectronics

Part # L6714D
Description  4 phase controller with embedded drivers for Intel VR10, VR11 and AMD 6Bit CPUs
PDF  70 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L6714D Datasheet(HTML) 34 Page - STMicroelectronics

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Current reading and current sharing loop
L6714
34/70
Figure 9.
Current reading connections.
Considering now to match the time constant between the inductor and the R-C filter applied
(Time constant mismatches cause the introduction of poles into the current reading network
causing instability. In addition, it is also important for the load transient response and to let
the system show resistive equivalent output impedance), it results:
Where IINFOx is the current information reproduced internally.
CSx-
CSx+
LGATEx
I
PHASEx
Lx
CSx+
CSx-
PHASEx
RLx
R
C
Rg
Rg
Rg
I
PHASEx
LS Mosfet RdsON Current Sense
Inductor DCR Current Sense
ICSx-
25
µA
ICSx-=IINFOx
NO Bias
L
R
L
-------
RC
I
CSx-
R
L
Rg
--------
I
PHASEx
⋅
=
⇒
⋅
I
INFOx
I
INFOX
R
L
Rg
--------
I
PHASEx
⋅
=
⇒
==



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