Dual/Doubler Interleaved MOSFET Driver

October 27, 2011 | FINAL | V1.09

4

IR3598

TYPICAL APPLICATIONS

+3.3V

V_CPU_L1

IR3538/

CHL8328

VINSEN

VSEN

VCC

RRES

V18A

VRTN

RCSP

RCSM

+12V Main

L

O

A

D

RCS

CCS

TSEN

GND

12V

V_VGD

VAR_GATE

Optional Variable

Gate Drive Circuit

HVCC

LOGATE

HIGATE

VCC

GND

PWM

LVCC

BOOT

SWITCH

IR3537/CHL8510

MODE

VSEN_L2

VRTN_L2

VR_RDY_L1

VR_RDY_L2

To/From

System

SMB_CLK

SMB_DIO

I2C or

SMBus

RCSP_L2

RCSM_L2

RCS

CCS

SV_DIO

SV_CLK

To/From

CPU

SV_ALERT#

GPO_B

1

SMB_ALERT

PSI

2

CFP

SV_ADDR

PM_ADDR

3.3V

VR_HOT#

TSEN2

1

PWM1

IRTN1

ISEN1

VDRV

LG1

HG1

VCC

GND

PWM1

12V

BOOT2

SW1

V_VGD

MODE

5V

12V

LG2

HG2

SW2

BOOT1

PWM2

PWM2

IRTN2

ISEN2

FUNCTION

PWM7

IRTN7

ISEN7

VDRV

LG1

HG1

VCC

GND

PWM1

12V

BOOT2

SW1

V_VGD

MODE

5V

12V

LG2

HG2

SW2

BOOT1

PWM8

PWM2

IRTN8

ISEN8

FUNCTION

Figure 4: 8-Phase CPU VR solution using IR3598 MOSFET drivers in DUAL mode & IR3538/CHL8328 Controller

with the IR3537/CHL8510 as a VGD Driver