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| A4933KJPTR-T Datasheet, PDF (7/25 Pages) Allegro MicroSystems – Automotive 3-Phase MOSFET Driver | |||
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A4933
Automotive 3-Phase MOSFET Driver
xHI
xLO
GHx
GLx
Timing Diagrams
xHI
xLO
tDEAD
tP(off)
GHx
tP(on)
tP(off)
GLx
tP(off)
Synchronous Rectification
tDEAD
High-Side PWM
(A) Gate Drive Timing, Phase Control Inputs
xHI
xLO
GHx
GLx
tP(on)
tP(off)
Low-Side PWM
PWMH
GHx
GLx
PWML
tP(off)
tDEAD
GHx
GLx
tDEAD
tP(off)
xHI = 1, xLO = 0, PWML = 1
(B) Gate Drive Timing, PWM Inputs
tDEAD
tP(off)
tP(off)
tDEAD
xHI = 0, xLO = 1, PWMH = 1
COAST
GHx
tP(off)
tP(on)
COAST
GHx
tP(off)
tP(on)
GLx
xHI = 1, xLO = 0, PWMH = PWML = 1
GLx
xHI = 0, xLO = 1, PWMH = PWML = 1
(C) Gate Drive Timing, COAST Inputs
FF1
FF2
Gate Drive
RESET
tDF
tLF
tHF
Disabled
tRF
Enabled
FF1
FF2
Gate Drive
Fault Register Read
(D) Fault Output Timing
RESET
Disabled
tDR
tRES
Enabled
Simple Fault Reset
Allegro MicroSystems, LLC
7
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
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