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ISL62883 Datasheet, PDF (13/39 Pages) Intersil Corporation – Multiphase PWM Regulator for IMVP-6.5 Mobile CPUs and GPUs
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ISL62883, ISL62883B
VDD
VR_ON
DAC
CLK_EN#
PGOOD
5mV/µs
2.5mV/µs
90%VBOOT
800µs
VID
COMMAND
VOLTAGE
13 SWITCHING
CYCLES
~7ms
FIGURE 8. SOFT-START WAVEFORMS
VR_ON is tied to VDD, with the soft-start sequence
starting 120µs after VDD crosses the POR threshold
Voltage Regulation and Load Line
Implementation
After the start sequence, the ISL62883 regulates the
output voltage to the value set by the VID inputs per
Table 1. The ISL62883 will control the no-load output
voltage to an accuracy of ±0.5% over the range of
0.75V to 1.5V. A differential amplifier allows voltage
sensing for precise voltage regulation at the
microprocessor die.
TABLE 1. VID TABLE
VID6 VID5 VID4 VID3 VID2 VID1 VID0 VO (V)
0
0
0
0
0
0
0 1.5000
0
0
0
0
0
0
1 1.4875
0
0
0
0
0
1
0 1.4750
0
0
0
0
0
1
1 1.4625
0
0
0
0
1
0
0 1.4500
0
0
0
0
1
0
1 1.4375
0
0
0
0
1
1
0 1.4250
0
0
0
0
1
1
1 1.4125
0
0
0
1
0
0
0 1.4000
0
0
0
1
0
0
1 1.3875
0
0
0
1
0
1
0 1.3750
0
0
0
1
0
1
1 1.3625
0
0
0
1
1
0
0 1.3500
0
0
0
1
1
0
1 1.3375
0
0
0
1
1
1
0 1.3250
0
0
0
1
1
1
1 1.3125
0
0
1
0
0
0
0 1.3000
0
0
1
0
0
0
1 1.2875
0
0
1
0
0
1
0 1.2750
0
0
1
0
0
1
1 1.2625
0
0
1
0
1
0
0 1.2500
0
0
1
0
1
0
1 1.2375
0
0
1
0
1
1
0 1.2250
TABLE 1. VID TABLE (Continued)
VID6 VID5 VID4 VID3 VID2 VID1 VID0 VO (V)
0
0
1
0
1
1
1 1.2125
0
0
1
1
0
0
0 1.2000
0
0
1
1
0
0
1 1.1875
0
0
1
1
0
1
0 1.1750
0
0
1
1
0
1
1 1.1625
0
0
1
1
1
0
0 1.1500
0
0
1
1
1
0
1 1.1375
0
0
1
1
1
1
0 1.1250
0
0
1
1
1
1
1 1.1125
0
1
0
0
0
0
0 1.1000
0
1
0
0
0
0
1 1.0875
0
1
0
0
0
1
0 1.0750
0
1
0
0
0
1
1 1.0625
0
1
0
0
1
0
0 1.0500
0
1
0
0
1
0
1 1.0375
0
1
0
0
1
1
0 1.0250
0
1
0
0
1
1
1 1.0125
0
1
0
1
0
0
0 1.0000
0
1
0
1
0
0
1 0.9875
0
1
0
1
0
1
0 0.9750
0
1
0
1
0
1
1 0.9625
0
1
0
1
1
0
0 0.9500
0
1
0
1
1
0
1 0.9375
0
1
0
1
1
1
0 0.9250
0
1
0
1
1
1
1 0.9125
0
1
1
0
0
0
0 0.9000
0
1
1
0
0
0
1 0.8875
0
1
1
0
0
1
0 0.8750
0
1
1
0
0
1
1 0.8625
0
1
1
0
1
0
0 0.8500
0
1
1
0
1
0
1 0.8375
0
1
1
0
1
1
0 0.8250
0
1
1
0
1
1
1 0.8125
0
1
1
1
0
0
0 0.8000
0
1
1
1
0
0
1 0.7875
0
1
1
1
0
1
0 0.7750
0
1
1
1
0
1
1 0.7625
0
1
1
1
1
0
0 0.7500
0
1
1
1
1
0
1 0.7375
0
1
1
1
1
1
0 0.7250
0
1
1
1
1
1
1 0.7125
1
0
0
0
0
0
0 0.7000
1
0
0
0
0
0
1 0.6875
13
FN6891.2
February 25, 2010
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