ISL6315 INTERSIL [Intersil Corporation], ISL6315 Datasheet - Page 11

• Manufacturer Part Number: ISL6315
• Description: Two-Phase Multiphase Buck PWM Controller with Integrated MOSFET Drivers
• Manufacturer: INTERSIL [Intersil Corporation]

VID4
TABLE 3. VRM10 VOLTAGE IDENTIFICATION CODES
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
VID3
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
VID2
1
1
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
VID1
0\
1
1
1
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
11
VID0
1
1
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
VID5
1
0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
0.8375
0.8500
0.8625
0.8750
0.8875
0.9000
0.9125
0.9250
0.9375
0.9500
0.9625
0.9750
0.9875
1.0000
1.0125
1.0250
1.0375
1.0500
1.0625
1.0750
1.0875
1.1000
1.1250
1.1375
1.1500
1.1625
1.1750
1.1875
1.2000
1.2125
1.2250
1.2375
1.2500
1.2625
1.2750
1.2875
1.3125
1.3250
1.3375
1.3500
1.3625
1.1125
VDAC
1.300
Off
Off
ISL6315
ISL6315
DYNAMIC VID (VID-ON-THE-FLY)
The ISL6315 is capable of executing on-the-fly output
voltage changes. The way the ISL6315 reacts to a change in
the VID code is dependent on the VID configuration. In
VRM9 or AMD Hammer settings, the ISL6315 checks for a
change in the VID code four times each switching cycle. The
VID code is the bit pattern present at pins VID4-VID0. If a
new code is established and it stays the same for 12
switching cycles, the ISL6315 begins changing the reference
by making one step change every four switching cycles until
it reaches the new VID code. Figure 5 depicts such a
transition, from 1.5V to 1.7V.
1.5V
1.5V
VID4
TABLE 3. VRM10 VOLTAGE IDENTIFICATION CODES
01110
FIGURE 5. TYPICAL DYNAMIC-VID OPERATION, VRM9 DAC
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
V
V
REF
OUT
VID3
00110
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
(100mV/div)
(Continued)
(100mV/div)
SETTING
VID CHANGE OCCURS HERE
VID2
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
VID1
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
V
VID
VID0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
VID5
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
February 10, 2006
1.3750
1.3875
1.4000
1.4125
1.4250
1.4375
1.4500
1.4625
1.4750
1.4875
1.5000
1.5125
1.5250
1.5375
1.5500
1.5625
1.5750
1.5875
1.6000
VDAC
FN9222.0