SiC462

www.vishay.com

Vishay Siliconix

S17-0360-Rev. D, 13-Mar-17

6

Document Number: 65124

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

FUNCTIONAL BLOCK DIAGRAM

Fig. 3 - SiC462 Functional Block Diagram

V

IN

V

FB

P

GOOD

5 μA

Current

source

0.8 V

I

LIMIT

MODE

EN

Bandgap

Ref

Driver

LDO

25 kHz

DC

Restore

Control logic

and

driver

V

DRV

V

CIN

On

timer

f

sw

V

CIN

Error

Amp

Over

temp

Internal

LDO

Current

sense

COMP

V

SNS

SW

SS

Comp

Zero current

DET

Sync. rectifier

Off

timer

V

DRV

V

DD

GL

UVLO

V

DD

5 μA

Ref

MODE

BOOT

Over

voltage

PWM

Comp

Ref

Ramp

Ultrasonic

PHASE

P

GND

Under

voltage

A

GND

5 μA

Ref

V

FB

SW

SW