L6714 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
L6714
STMicroelectronics
'L6714' PDF : 70 Pages View PDF
Voltage positioning
12 Voltage positioning
L6714
Output voltage positioning is performed by selecting the reference DAC and by
programming the Droop Function and Offset to the reference (See Figure 11). The currents
sourced from DROOP and FB pins cause the output voltage to vary according to the
external RFB resistor.
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:
VOUT = VREF – RFB ⋅ (IDROOP – IOFFSET)
where
VREF
=
⎧
⎨
⎩
VID – 19mV
VID
VR10 - VR11
AMD 6BIT
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.
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