L6714 STMicroelectronics, L6714 Datasheet - Page 34

• Manufacturer Part Number: L6714
• Description: IC CTRLR 4PH W/DRIVERS 64-TQFP
• Manufacturer: STMicroelectronics

Specifications of L6714

• Applications: Controller, Intel VR10, VR11, AMD CPU
• Voltage - Input: 12V
• Number Of Outputs: 4
• 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
• Mounting Style: SMD/SMT
• Case: QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Current reading and current sharing loop
34/70
Figure 9.
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 I
25 A
I
CSx-
LGATEx
INFOx
CSx+
------ -
R
CSx-
L
L
Current reading connections.
=
is the current information reproduced internally.
LS Mosfet R
R
C
Rg
Rg
dsON
I
CSx-
Current Sense
=
------- -
Rg
R
I
PHASEx
L
I
PHASEx
I
CSx-
NO Bias
=I
INFOx
=
I
INFOx
PHASEx
CSx+
CSx-
Inductor DCR Current Sense
I
INFOX
Rg
=
------- -
Rg
R
L
R
I
PHASEx
Lx
C
I
PHASEx
R
Lx
L6714