ISL6363_14 Datasheet, PDF (16/32 Pages) Intersil Corporation – Multiphase PWM Regulator for VR12™ Desktop CPUs

ISL6363
TABLE 1. VID TABLE (Continued)
VID
7 6 5 4 3 2 1 0 HEX
V_O (V)
1 1 0 0 0 0 0 1 C 1 1.21000
1 1 0 0 0 0 1 0 C 2 1.21500
1 1 0 0 0 0 1 1 C 3 1.22000
1 1 0 0 0 1 0 0 C 4 1.22500
1 1 0 0 0 1 0 1 C 5 1.23000
1 1 0 0 0 1 1 0 C 6 1.23500
1 1 0 0 0 1 1 1 C 7 1.24000
1 1 0 0 1 0 0 0 C 8 1.24500
1 1 0 0 1 0 0 1 C 9 1.25000
1 1 0 0 1 0 1 0 C A 1.25500
1 1 0 0 1 0 1 1 C B 1.26000
1 1 0 0 1 1 0 0 C C 1.26500
1 1 0 0 1 1 0 1 C D 1.27000
1 1 0 0 1 1 1 0 C E 1.27500
1 1 0 0 1 1 1 1 C F 1.28000
1 1 0 1 0 0 0 0 D 0 1.28500
1 1 0 1 0 0 0 1 D 1 1.29000
1 1 0 1 0 0 1 0 D 2 1.29500
1 1 0 1 0 0 1 1 D 3 1.30000
1 1 0 1 0 1 0 0 D 4 1.30500
1 1 0 1 0 1 0 1 D 5 1.31000
1 1 0 1 0 1 1 0 D 6 1.31500
1 1 0 1 0 1 1 1 D 7 1.32000
1 1 0 1 1 0 0 0 D 8 1.32500
1 1 0 1 1 0 0 1 D 9 1.33000
1 1 0 1 1 0 1 0 D A 1.33500
1 1 0 1 1 0 1 1 D B 1.34000
1 1 0 1 1 1 0 0 D C 1.34500
1 1 0 1 1 1 0 1 D D 1.35000
1 1 0 1 1 1 1 0 D E 1.35500
1 1 0 1 1 1 1 1 D F 1.36000
1 1 1 0 0 0 0 0 E 0 1.36500
1 1 1 0 0 0 0 1 E 1 1.37000
1 1 1 0 0 0 1 0 E 2 1.37500
1 1 1 0 0 0 1 1 E 3 1.38000
1 1 1 0 0 1 0 0 E 4 1.38500
1 1 1 0 0 1 0 1 E 5 1.39000
1 1 1 0 0 1 1 0 E 6 1.39500
1 1 1 0 0 1 1 1 E 7 1.40000
1 1 1 0 1 0 0 0 E 8 1.40500
TABLE 1. VID TABLE (Continued)
VID
7 6 5 4 3 2 1 0 HEX
V_O (V)
1 1 1 0 1 0 0 1 E 9 1.41000
1 1 1 0 1 0 1 0 E A 1.41500
1 1 1 0 1 0 1 1 E B 1.42000
1 1 1 0 1 1 0 0 E C 1.42500
1 1 1 0 1 1 0 1 E D 1.43000
1 1 1 0 1 1 1 0 E E 1.43500
1 1 1 0 1 1 1 1 E F 1.44000
1 1 1 1 0 0 0 0 F 0 1.44500
1 1 1 1 0 0 0 1 F 1 1.45000
1 1 1 1 0 0 1 0 F 2 1.45500
1 1 1 1 0 0 1 1 F 3 1.46000
1 1 1 1 0 1 0 0 F 4 1.46500
1 1 1 1 0 1 0 1 F 5 1.47000
1 1 1 1 0 1 1 0 F 6 1.47500
1 1 1 1 0 1 1 1 F 7 1.48000
1 1 1 1 1 0 0 0 F 8 1.48500
1 1 1 1 1 0 0 1 F 9 1.49000
1 1 1 1 1 0 1 0 F A 1.49500
1 1 1 1 1 0 1 1 F B 1.50000
1 1 1 1 1 1 0 0 F C 1.50500
1 1 1 1 1 1 0 1 F D 1.51000
1 1 1 1 1 1 1 0 F E 1.51500
1 1 1 1 1 1 1 1 F F 1.52000
As the load current increases from zero, the output voltage will
droop from the VID table value by an amount proportional to the
load current to achieve the load line. The ISL6363 can sense the
inductor current through the intrinsic DC Resistance (DCR) of the
inductors as shown in Figure 16 or through resistors in series
with the inductors as shown in Figure 22. In both methods,
capacitor C_n voltage represents the inductor total currents. A
droop amplifier converts C_n voltage into an internal current
source with the gain set by resistor R_i. The current source is used
for load line implementation, current monitor and overcurrent
protection.
Figure 9 shows the load line implementation. The ISL6363 drives
a current source I_droop out of the FB pin, described by Equation 1.
I_droop
=
2_----x_----V_---C----n-
R_i
(EQ. 1)
When using inductor DCR current sensing, a single NTC element
is used to compensate the positive temperature coefficient of the
copper winding, thus sustaining the load line accuracy with
reduced cost.
16
FN6898.1
September 5, 2013