NCP6251 datasheet(3/24 Pages) ONSEMI

Part #	NCP6251

Description	2/3/4-Phase Controller for CPU Applications

Download	24 Pages

Scroll/Zoom	100%

Manufacturer	ONSEMI [ON Semiconductor]

Direct Link	http://www.onsemi.com

Logo

3 / 24 page

NCP6251

http://onsemi.com

3

Figure 2. NCP6251 Block Diagram

VCCA

+

−

5V UVLO

4.25V/4.05V

PVI/SVI

HYBRID

INTERFACE

+

−

VS−

VS+

DIFFOUT

+

−

FB

COMP

1.3 V

Diff Amp

Error Amp

VDD

Oscillator

ILIM

ENABLE

+

−

ILIMIT_VDD

VDD REGULATOR

Fault Logic

3−Phase

Detection

and

Monitor Circuits

+

CS1

CS1N

CS2

CS2N

CS3

CS3N

+

−

Gain = 6

+

−

Gain = 6

+

−

Gain = 6

+

Droop Amplifier

+

−

Gain = 6

CS4

CS4N

+

G4

VDD_DAC

VS+

OVP

DRVON

GND

VID0

VID1

VID2/SVD

VID3/SVC

VID4

VID5

12VMON

+

−

12V UVLO

8.5V/7.5V

1.3 V

DROOP

PWROK

NB_OFFSET

OFFSET

VDD_DAC OUT

ILIMIT_NB =

ILIMIT_VDD/N

(N = VDD

phase count)

FLAG

PWRGOOD

Gain = 1

ROSC

+

−

PWM4

+

−

PMW3

+

−

PWM1

+

−

PWM2

G1

G2

G3

+

−

NB_VS+

NB_VS−

NB_DIFFOUT

+

−

NB_FB

NB_COMP

1.3 V

Diff Amp

Error Amp

NB

Oscillator

+

NB_CS

NB_CSN

+

−

Gain = 6

Droop Amplifier

OVP

FAULT

1.3 V

NB_DROOP

Gain = 1

−

PWM_NB

PSI_L

NB_DRVON

+

−

ILIMIT_NB

NB REGULATOR

Fault Logic

and

Monitor Circuits

NB_G

NB_DAC OUT

fNB = 1.27 x fVDD

VDD Slew

Rate Limit

NB Slew

Rate Limit

+

VDD_SRL OUT

NB_SRL OUT

VDD_SRL

NB_DAC

NB_VS+

NB_VS−

NB_SRL

X

VDD OFFSET

SCALING

NB OFFSET

SCALING

NORMAL OPERATION

BOOT_VID & VFIX MODES

NORMAL OPERATION

BOOT_VID & VFIX MODES

VDD

NB

NCP5393B

HI−Z

VDD PSI_L

HI−Z

SHED

+

VS−

+

VCCB

Similar Part No. - NCP6251

Manufacturer	Part #	Datasheet	Description
ON Semiconductor	NCP623	148Kb / 14P	Ultra Low Noise 150 mA Low Dropout Voltage Regulator with ON/OFF Control August, 2004 ??Rev. 0
	NCP623	212Kb / 16P	Ultra Low Noise 150 mA Low Dropout Voltage Regulator with ON/OFF Control September, 2006 ??Rev. 7
	NCP623	3Mb / 4P	AC-DC Offline Switching Controllers/Regulators Rev.0, Jun-2005
	NCP623DM	148Kb / 14P	Ultra Low Noise 150 mA Low Dropout Voltage Regulator with ON/OFF Control August, 2004 ??Rev. 0
	NCP623DM-28R2G	212Kb / 16P	Ultra Low Noise 150 mA Low Dropout Voltage Regulator with ON/OFF Control September, 2006 ??Rev. 7

More results

Similar Description - NCP6251

Manufacturer	Part #	Datasheet	Description
ON Semiconductor	NCP5392	313Kb / 32P	2/3/4-Phase Controller for CPU Applications August, 2008 ??Rev. 3
	NCP5392Q	324Kb / 30P	2/3/4-Phase Controller for CPU Applications June, 2009 ??Rev. 0
	NCP5387	347Kb / 37P	2/3/4 Phase Controller for CPU Applications April, 2007 ??Rev. 3
	NCP5392P	314Kb / 32P	2/3/4-Phase Controller for CPU Applications April, 2008 - Rev. 0
	NCP5393B	305Kb / 24P	2/3/4-Phase Controller for CPU Applications June, 2009 ??Rev. 0
	NCP5393	490Kb / 21P	2/3/4-Phase Controller for CPU Applications February, 2008 - Rev. 0
	NCP5393A	305Kb / 24P	2/3/4-Phase Controller for CPU Applications August, 2008 ??Rev. P0
	NCP5395T	287Kb / 25P	2/3/4-Phase Controller with On Board Gate Drivers for CPU Applications June, 2009 ??Rev. 0
	NCP6151S52MNR2G	47Kb / 1P	VR12 2-, 3-, 4-Phase CPU Controller 1-Phase GPU Controller 6/16/2013
	NCP5392T	316Kb / 30P	2/3/4-Phase Controller with Light Load Power Saving Enhancement for CPU Applications June, 2009 ??Rev. 0

More results

NCP6251 Datasheet(PDF) 3 Page - ON Semiconductor

NCP6251 Datasheet(HTML) 3 Page - ON Semiconductor

Similar Part No. - NCP6251

Similar Description - NCP6251

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24

Datasheet Download

Link URL