MC33937 Datasheet, PDF (30/48 Pages) Freescale Semiconductor, Inc – Three Phase Field Effect Transistor Pre-driver

FUNCTIONAL DEVICE OPERATION
OPERATIONAL MODES
Sleep Mode
Sleep
Y
RST
N
Standby Mode
STBY
N
EN
Y
Initialization
ENABLE LS
Enable (Normal) Mode
N
Y
LS Toggle
Y
HS Toggle
N
ENABLE
HS
Fault Protection
DESAT
Disabled _Y
N
N _DESAT/
PHASE
Y
N
VLS UV
Y
Driver OFF
DESAT/
Y PHASE
N
Disable Driver
Holdoff Active
Driver OFF
Y ^{VLS UV}
N
N
EN
Y
RST
Y
N
Figure 17. Device Operational Flow Diagram
33937A
30
Analog Integrated Circuit Device Data
Freescale Semiconductor