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

Typical Performance (Continued)

Phase Margin

Gain

FIGURE 50. TRANSIENT RESPONSE WITH OVERSHOOT

REDUCTION FUNCTION ENABLED, VIN = 19V,

VID = 0.95V, IO = 12A/51A, di/dt = “FASTEST”,

Ch1: PHASE1, Ch2: VO, Ch3: N/A, Ch4: LGATE1

1000

900

800

700

600

500

400

300

200

100

0

0

SPEC

VIN = 12V

VIN = 8V

VIN = 19V

5 10 15 20 25 30 35 40 45 50

IOUT (A)

FIGURE 52. IMON, VID = 1.075

FIGURE 51. 2-PHASE CPU MODE REFERENCE DESIGN LOOP

GAIN T2(s) MEASUREMENT RESULT

5.0

4.5

4.0

3.5

3.0

2.5 PSI# = 1, DPRSLPVR = 0, 2-Phase CCM

2.0

1.5

1.0

0.5 PSI# = 0, DPRSLPVR = 0, 1-Phase DE

0.0

1k

10k

100k

1M

FREQUENCY (Hz)

FIGURE 53. REFERENCE DESIGN FDIM RESULT

FIGURE 54. 1-PHASE GPU MODE SOFT-START, DPRSLPVR=0,

VIN = 8V, IO = 0A, VID = 1.2375V, Ch1: PHASE1,

Ch2: VO

38

FIGURE 55. 1-PHASE GPU MODE SHUT DOWN, VIN = 8V, IO = 1A,

VID = 1.2375V, Ch1: PHASE1, Ch2: VO

FN6890.4

June 21, 2011

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