BCM380y475x1K2A30
High Level Functional State Diagram
Conditions that cause state transitions are shown along arrows. Sub-sequence activities listed inside the state bubbles.
Application
of VIN
VµC < VIN < VIN_UVLO+
STARTUP SEQUENCE
VIN > VIN_UVLO+
STANDBY SEQUENCE
TM Low
TM Low
EN High
EN High
VAUX Low
VAUX Low
Powertrain Stopped
Powertrain Stopped
ENABLE falling edge,
or OTP detected
t
UVLO+_DELAY expired
ONE TIME DELAY
INITIAL STARTUP
Input OVLO or UVLO,
Output OCP,
Fault
Auto-
or UTP detected
recovery
ENABLE falling edge,
FAULT
SEQUENCE
TM Low
or OTP detected
SUSTAINED
OPERATION
TM PWM
Input OVLO or UVLO,
Output OCP,
EN High
EN High
or UTP detected
VAUX Low
VAUX High
Powertrain Stopped
Powertrain Active
Short Circuit detected
BCM® Bus Converter
Rev 1.3
06/2014
vicorpower.com
800 927.9474
Page 11 of 24
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