MAX8771 查看數據表（PDF） - Maxim Integrated

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MAX8771

Dual-Phase, QuickPWM Controller for IMVP-6+ CPU Core Power Supplies

Maxim Integrated 

CONFIDENTIAL INFORMATION – RESTRICTED TO INTEL® IMVP-6 LICENSEES

MAX8770/MAX8771/MAX8772 Dual-Phase, Quick-

PWM Controller for IMVP-6+ CPU Core Power Supplies

Typical Operating Characteristics (continued)

(Circuit of Figure 1. VIN = 12V, VCC = VDD, SHDN = PSI = 5V, DPRSLPVR = GND, D0–D6 set for 1.1500V, TA = 25°C, unless other-

wise specified.)

NO-LOAD SUPPLY CURRENT

vs. INPUT VOLTAGE AT SKIP MODE

10

ICC + IDD

REFERENCE VOLTAGE DISTRIBUTION

100

SAMPLE SIZE = 200

80

OUTPUT OFFSET VOLTAGE DISTRIBUTION

100

1.2000V

SAMPLE SIZE = 200

0.8125V

80

1

60

60

40

0.1

IIN

0.01

0

5

DPRSLPVR = VCC

10

15

20

25

INPUT VOLTAGE (V)

20

0

1.990

Gm(FB) TRANSCONDUCTANCE

DISTRIBUTION

100

SAMPLE SIZE = 200

80

60

40

20

2.000

REFERENCE VOLTAGE (V)

2.010

0

-3

-2

-1

1

2

3

OUTPUT OFFSET VOLTAGE (mV)

INDUCTOR CURRENT DIFFERENCE

vs. LOAD CURRENT

0.3

0.2

40

20

0

595 597 599 601 603 605

TRANSCONDUCTANCE (µS)

SOFT-START (UP TO PWRGD)

MAX8770 toc14

A

0

0

B

0

C

0

D

E

0

F

0

G

0

RLOAD = 65mΩ

1ms/div

A. SHDN, 5V/div

B. CLKEN, 10V/div

C. PWRGD, 10V/div

D. PHASEGD, 10V/div

E. VOUT, 1V/div

F. ILXI, 10A/div

G. ILX2, 10V/div

0.1

RSENSE = 1mΩ

0

0

5

10

15

20

25

INPUT VOLTAGE (V)

SOFT-START (UP TO CLKEN)

MAX8770 toc15

A

0

0

B

C

0

D

0

E

0

F

0

RLOAD = 65mΩ

200µs/div

A. SHDN, 5V/div

B. CLKEN, 10V/div

C. LX1, 10V/div

D. VOUT, 1V/div

E. ILXI, 10A/div

F. ILX2, 10V/div

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