LB11946

No.7946-10/14

SLOW DECAY Current Path

The reregenerative current at upper-side transistor switching operates

VREF

3.04

VREF

SBD

SBD

VBB

OUTA

OUTA

ON

OFF

ON

constant

Re

I

VE

Motor current I

I = VE/Re

Output OFF

Internal reference voltage

by setting voltage circuit

Current path at output ON

Regenerative current

at upper-side transistor OFF

Sensing voltage comparator

Fig.1

FAST DECAY Current Path

VREF

3.04

VREF

SBD

SBD

VBB

OUTA

OUTA

ON

OFF

Re

VE

ON

OFF

Current path at output ON

Current path at Fast DECAY

Sensing voltage comparator

Fig.2