A3941 Datasheet, PDF (6/21 Pages) Allegro MicroSystems – Automotive Full Bridge MOSFET Driver

A3941
Automotive Full Bridge MOSFET Driver
Timing Diagrams
Gate Drive Timing – PWM inputs, Slow Decay, Synchronous Rectification
PWMH
GHx
GLx
tP(off)
tP(off)
tDEAD
tDEAD
PWML
GHx
GLx
tP(off)
tDEAD
tP(off)
tDEAD
SR=1, PWML=1
SR=1, PWMH=1
Gate Drive Timing – PWM inputs, Slow Decay, Diode Rectification
PWMH
GHx
GLx
tP(off)
tP(on)
SR=0, PWML=1
PWML
GHx
GLx
tP(off)
tP(on)
SR=0, PWMH=1
Gate Drive Timing – Phase Input, Fast Decay,
Synchronous Rectification
PHASE
GHA
tP(off)
tDEAD
tP(off)
tDEAD
GLA
GHB
GLB
PWML=1, PWMH=1
Gate Drive Timing – PWM Input, Fast Decay,
Diode Rectification
PWMH
PWML
GHA
tP(off)
tP(on)
GLA
GHB
GLB
PHASE=1
Allegro MicroSystems, Inc.
6
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com