ISL62882(2011) View Datasheet(PDF) - Intersil

Part Name

Description

Manufacturer

ISL62882
(Rev.:2011)

Multiphase PWM Regulator for IMVP-6.5™ Mobile CPUs and GPUs

Intersil 

ISL62882, ISL62882B

VDD

VR_ON

DAC

CLK_EN#

PGOOD

5mV/µs

2.5mV/µs

90% Vboot

800µs

VID

COMMAND

VOLTAGE

13 SWITCHING

CYCLES

~7ms

FIGURE 10. SOFT-START WAVEFORMS FOR CPU VR APPLICATION

VDD

VR_ON

DAC

CLK_EN#

PGOOD

SLEW

RATE

90%

120µs

VID COMMAND

VOLTAGE

13 SWITCHING

CYCLES

~7ms

FIGURE 11. SOFT-START WAVEFORMS FOR GPU VR APPLICATION

Voltage Regulation and Load Line

Implementation

After the start sequence, the ISL62882 regulates the output

voltage to the value set by the VID inputs per Table 1. The

ISL62882 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

VO

VID6 VID5 VID4 VID3 VID2 VID1 VID0 (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

VID6

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

VID5

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

TABLE 1. VID TABLE (Continued)

VID4

0

0

0

0

1

1

1

1

1

1

1

1

1

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

VID3

1

1

1

1

0

0

0

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

1

1

0

0

0

VID2

1

1

1

1

0

0

0

0

1

1

1

1

0

0

0

0

1

1

1

1

0

0

0

0

1

1

1

1

0

0

0

0

1

1

1

1

0

0

0

VID1

0

0

1

1

0

0

1

1

0

0

1

1

0

0

1

1

0

0

1

1

0

0

1

1

0

0

1

1

0

0

1

1

0

0

1

1

0

0

1

VID0

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

VO

(V)

1.3500

1.3375

1.3250

1.3125

1.3000

1.2875

1.2750

1.2625

1.2500

1.2375

1.2250

1.2125

1.2000

1.1875

1.1750

1.1625

1.1500

1.1375

1.1250

1.1125

1.1000

1.0875

1.0750

1.0625

1.0500

1.0375

1.0250

1.0125

1.0000

0.9875

0.9750

0.9625

0.9500

0.9375

0.9250

0.9125

0.9000

0.8875

0.8750

14

FN6890.4

June 21, 2011

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