SiC770CD

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Vishay Siliconix

S13-1119-Rev. A, 27-May-13

7

Document Number: 62727

THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT

PWM TIMING DIAGRAM

Fig. 4 - Definition of PWM Logic and Tri-State

PWM TIMING DIAGRAM

Fig. 5 - ZCD_EN# Operation Timing Diagram

Fig. 6 - DSBL# Function Timing Diagram

PWM

GH

GL

PWM

HG

LG

ZCD_EN#

High

Low

PWM

Controller

Gate

Driver

VIN

VOUT

ZCD_EN#

PWM

BOOT

SW

PHASE

IL Sense

CS

ZCD

IL

0A

PWM

DSBL#

GH

GL

t

PWM

DSBL#

GH

GL

t

DSBL# Hi to GH Rising propagation delay

DSBL# Hi to GL Rising propagation delay

Enable

PWM

DSBL#

GH

GL

DSBL# Lo to GH Falling propagation delay

t

DSBL# Lo to GL Falling propagation delay

PWM

DSBL#

GH

GL

t

Disable