MP2932 - 6-PHASE PWM CONTROLLER WITH 8-BIT ADC CODE

MP2932 Rev.1.02

www.MonolithicPower.com

9

4/30/2012

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© 2012 MPS. All Rights Reserved.

BLOCK DIAGRAM

SS

ISEN4-

ISEN4+

ISEN3-

ISEN3+

ISEN2-

ISEN2+

ISEN1-

ISEN1+

I_TRIP

RGND

ID7

ID6

ID5

ID4

ID3

ID2

ID1

ID0

VRSEL

DAC

OFS

REF

FB

COMP

IDROOP

VR_HOT

VR_ FAN

TM

SD

GND

PWM6

PWM5

PWM2

PWM1

EN_PWR

EN_ VTT

0.875

0.875

VSEN

VDIFF VR_RDY

FS

X1

OVP

S

POWER-ON

RESET ( POR)

CLOCK AND

RAMP GENETATOR

SOFT- START

AND

FAULT LOGIC

+175mV

DYNAMIC

VID

DVA

OFFSET

E/A

OC1

CHANNEL

DETECT

CHANNEL

CURRENT

SENSE

CHANNEL

CURRENT

BALANCE

AND PEAK

CURRENT LIMIT

PWM

MODULATOR

PWM

MODULATOR

PWM

MODULATOR

PWM

MODULATOR

SHUTDOWN

DRIVER MOS @

Hiz STATE

THERMAL

MONITOR

N

1

PWM3

PWM

MODULATOR

PWM4

PWM

MODULATOR

ISEN6-

ISEN6+

ISEN5-

ISEN5+

OC2

IOUT

I_TOT

2V

OVP

OVP

DRIVE

S

Q

R

VCC

Figure 1—Functional Block Diagram