L6714 STMicroelectronics, L6714 Datasheet - Page 36

• 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

Voltage positioning
12
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Voltage positioning
Output voltage positioning is performed by selecting the reference DAC and by
programming the Droop Function and Offset to the reference
sourced from DROOP and FB pins cause the output voltage to vary according to the
external R
In addition, the embedded Remote Buffer allows to precisely programming the output
voltage offsets and variations by recovering the voltage drops across distribution lines.
The output voltage is then driven by the following relationship:
where
DROOP function can be disabled as well as the OFFSET: connecting DROOP pin and FB
pin together implements the load regulation dependence while, if this effect is not desired,
by shorting DROOP pin to SGND it is possible for the device to operate as a classic Voltage
Mode Buck converter. The DROOP pin can also be connected to SGND through a resistor
obtaining a voltage proportional to the delivered current usable for monitoring purposes.
OFFSET can be disabled by shorting the relative pin to SGND.
FB
resistor.
V
OUT
V
REF
=
=
V
REF
VID 19mV
VID
–
R
–
FB
I
DROOP
VR10 - VR11
AMD 6BIT
–
I
OFFSET
(See Figure
11). The currents
L6714