L6751C datasheet(17/57 Pages) STMICROELECTRONICS

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L6751C

Electrical specifications

SDROOP

LL accuracy (SPhase) 0

to full load

ISCSN = 0; RG = 1.3 k

-1.75

A

ISCSN = 20 A; RG = 1.3 k

-1

A

kIMON

IMON accuracy (MPhase)

IINFOx = 0 A; N = 6; RG = 540 ;

RFB = 1.108 k

00.75

A

Same as above, IINFOx = 20 A-4.5

4.5

A

kSIMON

SIMON accuracy

(SPhase)

ISCSN = 0 A; RG = 1.3 k

00.5

A

ISCSN = 20 A; RG = 1.3 k

-1

A

EA DC Gain(1)

100

Slew rate(1)

COMP to SGND = 10 pF

s

DVID - Intel

CPU mode

Slew rate fast

Multi-phase section

mV/

s

Slew rate slow

mV/

s

Slew rate fast

Single-phase section

Slew rate slow

2.5

DVID - Intel

DDR mode

Slew rate fast

Multi-phase section

mV/

s

Slew rate slow

2.5

mV/

s

DVID - AMD

mode

Slew rate

Both sections

mV/

s

IMON ADC

GetReg(15h)

V(IMON) = 0.992 V

Hex

Accuracy

Hex

PWM outputs and ENDRV

PWMx,

SPWM

Output high

I = 1 mA

Output low

I = -1 mA

0.2

IPWM1

Test current

Sourced from pin, EN = 0.

A

IPWM2

Test current

A

IPWMx, SPWM Test current

Sourced from pin, EN = 0.

-10

A

ENDRV

Voltage low

IENDRV = -4 mA; both sections

0.4

Protection (both sections)

OVP

Overvoltage protection

VSEN rising; wrt VID

100

200

UVP

Undervoltage protection

VSEN falling; wrt VID; VID > 500 mV

-525

-375

FBR DISC

FB disconnection

VCS- rising, above VSEN/SVSEN

650

700

750

FBG DISC

FBG disconnection

FBR input wrt VID

950

1000

1050

VR_RDY,

SVR_RDY

Voltage low

ISINK = -4 mA

0.4

VOC_TOT

OC threshold, MPhase

VILIM rising, to GND

2.5

VSOC_TOT

OC threshold, SPhase

VSIMON rising, to GND

1.55

Table 5. Electrical characteristics (continued)

Symbol

Parameter

Test conditions

Min.

Typ.

Max.

Unit

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