MAX17482GTL Ver la hoja de datos (PDF) - Maxim Integrated

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MAX17482GTL

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

Maxim Integrated 

Dual-Phase, Quick-PWM Controllers for

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

ELECTRICAL CHARACTERISTICS (continued)

(Circuit of Figure 1, VIN = 10V, VCC = VDD = VSHDN = VPGDIN = VPSI = VILIM = 5V, V3P3 = 3.3V, DPRSLPVR = GNDS = GND, VCSP1

= VCSN1 = VCSP2 = VCSN1 = 1.0000V, FB = FBAC, RFBAC = 3.57kΩ from FBAC to CSN1, D6–D0 = [0101000]; MAX17082/MAX17482:

VSLOW = 5V; MAX17021: DPRSTP = GND; TA = 0°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.)

PARAMETER

SYMBOL

CONDITIONS

MIN

CSP_, CSN_ Common-

Mode Input Range

0

Phase 2 Disable Threshold

Measured at CSP2

3

CSP_, CSN_ Input Current

ILIM Input Current

Droop Amplifier Offset

ICSP_, ICSN_ TA = +25°C

IILIM

TA = +25°C

(1/N) x  (VCSP_ - VCSN_) at

IFBAC = 0;

 indicates summation over

all phases from 1 to N, N = 2

TA = +25oC

TA = 0oC to +85oC

-0.2

-0.1

-0.5

-0.75

Droop Amplifier

Transconductance

Current-Balance Amplifier

Offset

IFBAC/
[ (VCSP_ - VCSN_)];

Gm(FBAC)  indicates summation over all phases from 1 to 590

N, N = 2, VFBAC = VCSN- = 0.45V to 2V

(VCSP1 - VCSN1) - (VCSP2 - VCSN2) at ICCI = 0

-1.0

Current-Balance Amplifier

Transconductance

Gm(CCI) ICCI/[(VCSP1 - VCSN1) - (VCSP2 - VCSN2)]

CURRENT MONITOR (MAX17082/MAX17482 Only)

Current-Monitor Output

Current at Full Load

Condition

IIMON

VCSP1 - VCSN1 = VCSP2 - VCSN2 = 20mV,

VCSN_ = 0.45V to 2.0V

93.12

TYP

VCC -

1

600

200

96

MAX

2

VCC -

0.4

+0.2

+0.1

+0.5

+0.75

608

+1.0

98.88

UNITS

V

V

μA

μA

mV/

phase

μS

mV

μS

μA

Current-Monitor

Transconductance

IIMON/
[ (VCSP_ - VCSN_)];

Gm(IMON)  indicates summation over all phases from 1 to 2.2

2.4

2.6

mS

N, N = 2, CSN_ = 0.45V to 2V

IMON Clamp Voltage

VIMON,max ISINK = 10mA

1.05 1.10 1.15

V

IMON Pulldown Resistance

in Shutdown

SHDN = 0, measured after soft-shutdown

completed (DL_ = low)

GATE DRIVERS

DH_ Gate Driver

On-Resistance

DL_ Gate Driver

On-Resistance

RON(DH_)

RON(DL_)

BST_ - LX_ forced to 5V

High state (pullup)

Low state (pulldown)

High state (pullup)

Low state (pulldown)

DH_ Gate Driver Source

Current

IDH_(SOURCE) DH_ forced to 2.5V, BST_ - LX_ forced to 5V

DH_ Gate Driver Sink

Current

IDH_(SINK) DH_ forced to 2.5V, BST_ - LX_ forced to 5V

DL_ Gate Driver Source

Current

IDL_(SOURCE) DL_ forced to 2.5V

10

0.9 2.5

0.7 2.0

0.7 2.0

0.25 0.7

2.2

A

2.7

A

2.7

A

6 _______________________________________________________________________________________

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