ISL6556B Datasheet, PDF (13/24 Pages) Intersil Corporation – Optimized Multi-Phase PWM Controller with 6-Bit DAC and Programmable Internal Temperature Compensation for VR10.X Application

ISL6556B
TABLE 1. VOLTAGE IDENTIFICATION (VID) CODES
VID4 VID3 VID2 VID1 VID0 VID12.5 VDAC
0
1
0
1
0
0
0.8375V
0
1
0
0
1
1
0.8500V
0
1
0
0
1
0
0.8625V
0
1
0
0
0
1
0.8750V
0
1
0
0
0
0
0.8875V
0
0
1
1
1
1
0.9000V
0
0
1
1
1
0
0.9125V
0
0
1
1
0
1
0.9250V
0
0
1
1
0
0
0.9375V
0
0
1
0
1
1
0.9500V
0
0
1
0
1
0
0.9625V
0
0
1
0
0
1
0.975V0
0
0
1
0
0
0
0.9875V
0
0
0
1
1
1
1.0000V
0
0
0
1
1
0
1.0125V
0
0
0
1
0
1
1.0250v
0
0
0
1
0
0
1.0375V
0
0
0
0
1
1
1.0500V
0
0
0
0
1
0
1.0625V
0
0
0
0
0
1
1.0750V
0
0
0
0
0
0
1.0875V
1
1
1
1
1
1
OFF
1
1
1
1
1
0
OFF
1
1
1
1
0
1
1.1000V
1
1
1
1
0
0
1.1125V
1
1
1
0
1
1
1.1250V
1
1
1
0
1
0
1.1375V
1
1
1
0
0
1
1.1500V
1
1
1
0
0
0
1.1625V
1
1
0
1
1
1
1.1750V
1
1
0
1
1
0
1.1875V
1
1
0
1
0
1
1.2000V
1
1
0
1
0
0
1.2125V
1
1
0
0
1
1
1.2250V
1
1
0
0
1
0
1.2475V
TABLE 1. VOLTAGE IDENTIFICATION (VID) CODES (Continued)
VID4 VID3 VID2 VID1 VID0 VID12.5 VDAC
1
1
0
0
0
1
1.2500V
1
1
0
0
0
0
1.2625V
1
0
1
1
1
1
1.2750V
1
0
1
1
1
0
1.2875V
1
0
1
1
0
1
1.3000V
1
0
1
1
0
0
1.3125V
1
0
1
0
1
1
1.3250V
1
0
1
0
1
0
1.3375V
1
0
1
0
0
1
1.3500V
1
0
1
0
0
0
1.3625V
1
0
0
1
1
1
1.3750V
1
0
0
1
1
0
1.3875V
1
0
0
1
0
1
1.4000V
1
0
0
1
0
0
1.4125V
1
0
0
0
1
1
1.4250V
1
0
0
0
1
0
1.4375V
1
0
0
0
0
1
1.4500V
1
0
0
0
0
0
1.4625V
0
1
1
1
1
1
1.4750V
0
1
1
1
1
0
1.4875V
0
1
1
1
0
1
1.5000V
0
1
1
1
0
0
1.5125V
0
1
1
0
1
1
1.5250V
0
1
1
0
1
0
1.5375V
0
1
1
0
0
1
1.5500V
0
1
1
0
0
0
1.5625V
0
1
0
1
1
1
1.5750V
0
1
0
1
1
0
1.5875V
0
1
0
1
0
1
1.600V
Load-Line Regulation
Some microprocessor manufacturers require a precisely-
controlled output resistance. This dependence of output
voltage on load current is often termed “droop” or “load line”
regulation. By adding a well controlled output impedance,
the output voltage can be level in the direction that works to
control the voltage spike coincident with fast load current
demand changes.
13
FN9097.4
December 28, 2004