MAX17021 datasheet(1/48 Pages) MAXIM

Part #	MAX17021

Description	Dual-Phase, Quick-PWM Controllers for IMVP-6/IMVP-6.5 CPU Core Power Supplies

PDF	48 Pages

Scroll/Zoom	100%

Manufacturer	MAXIM [Maxim Integrated Products]

Direct Link	https://www.maximintegrated.com/en.html

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General Description

The MAX17021/MAX17082/MAX17482 are 2/1-phase-

interleaved Quick-PWM™ step-down VID power-supply

controllers for notebook CPUs. True out-of-phase oper-

ation reduces input ripple current requirements and

output- voltage ripple, while easing component selec-

tion and layout difficulties. The Quick-PWM control pro-

vides instantaneous response to fast load-current

steps. Active voltage positioning reduces power dissi-

pation and bulk output capacitance requirements and

allows ideal positioning compensation for tantalum,

polymer, or ceramic bulk output capacitors.

A slew-rate controller allows controlled transitions between

VID codes, controlled soft-start and shutdown, and con-

trolled exit from suspend. A thermistor-based temperature

sensor provides a programmable thermal-fault output

(

VRHOT). A current monitor output (IMON) provides an

analog current output proportional to the power consumed

by the CPU (MAX17082/MAX17482 only). Output under-

voltage, overvoltage (MAX17021/MAX17082 only), and

thermal protection shut the controller down when any of

these faults are detected. A voltage-regulator power-OK

(PWRGD) output indicates the output is in regulation.

Additionally, the MAX17021/MAX17082/MAX17482 fea-

ture true differential current sense and a phase-good

(PHASEGD) output that indicates a phase imbalance

fault condition.

The MAX17021 supports the IMVP-6+ specification

while the MAX17082/MAX17482 support the IMVP-6.5

requirements. The MAX17021/MAX17082/MAX17482

are available in a 5mm x 5mm, 40-pin TQFN package.

Applications

IMVP-6+/IMVP-6.5 Core Supply

Multiphase CPU Core Supply

Voltage-Positioned, Step-Down Converters

Notebook/Desktop Computers

Blade Servers

Features

o Single-/Dual-Phase, Quick-PWM Controllers

o MAX17021 IMVP-6+ (Montevina)

o MAX17082/MAX17482 IMVP-6.5 (Calpella)

o ±0.5% VOUT Accuracy Over Line, Load, and

Temperature

o 7-Bit 0 to 1.50V VID Control

o Dynamic Phase Selection Optimizes Active/Sleep

Efficiency

o Transient Phase Overlap Reduces Output

Capacitance

o Integrated Boost Switches

o Active Voltage Positioning with Adjustable Gain

o Programmable 200kHz to 800kHz Switching

Frequency

o Accurate Current Balance and Current Limit

o Adjustable Slew-Rate Control

o Power-Good, Clock Enable, and Thermal-Fault

Outputs

o Phase Current Imbalance Fault Output

o Drives Large Synchronous Rectifier MOSFETs

o 4V to 26V Battery Input-Voltage Range

o Undervoltage and Thermal-Fault Protection

o Overvoltage Protection (MAX17021/MAX17082)

o Soft-Startup and Soft-Shutdown

Dual-Phase, Quick-PWM Controllers for

IMVP-6+/IMVP-6.5 CPU Core Power Supplies

________________________________________________________________

Maxim Integrated Products

1

SHDN

TON

V3P3

PWRGD

PHASEGD

DPRSLPVR

PSI

CSP2

CSN2

CSP1

D6

D5

D4

D3

D2

D1

D0

DPRSTP (SLOW)

CSN1

CLKEN

MAX17021

(MAX17082)

MAX17482

THIN QFN

+

TOP VIEW

() DESIGNATES MAX17082/MAX17482 PIN NAME.

*EXPOSED PAD. CONNECTED TO GND.

35

36

34

33

12

11

13

14

12

4

5

6

7

27

28

29

30

26

24 23

22

3

25

37

38

39

40

32

15

31

16

17

18

19

20

89

10

*EP

21

Pin Configuration

Ordering Information

19-4372; Rev 2; 7/09

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

EVALUATION

KIT

AVAILABLE

+

Denotes a lead-free(Pb)/RoHS-compliant package.

*

EP = Exposed pad.

PART

TEMP RANGE

PIN-PACKAGE

MAX17021GTL+

-40°C to +105°C

40 TQFN-EP*

MAX17082GTL+

-40°C to +105°C

40 TQFN-EP*

MAX17482GTL+

-40°C to +105°C

40 TQFN-EP*

Quick-PWM is a trademark of Maxim Integrated Products, Inc.

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