BCM6123XD1E5126YZZ Datasheet, PDF (17/30 Pages) Vicor Corporation – Isolated Fixed-Ratio DC-DC Converter

High Level Functional State Diagram
BCM6123xD1E5126yzz
Application
of input voltage to V_{PRI_DC}
V < V < V _{µC_ACTIVE}
PRI_DC
PRI_UVLO+
STANDBY SEQUENCE
TM Low
EN High
VAUX Low
Powertrain Stopped
Fault
Auto-
recovery
V > V _{PRI_DC}
PRI_UVLO+
STARTUP SEQUENCE
TM Low
EN High
VAUX Low
ENABLE falling edge,
or OTP detected
Powertrain Stopped
Input OVLO or UVLO,
Output OCP,
or UTP detected
t_{PRI_UVLO+_DELAY}
expired
ONE TIME DELAY
INITIAL STARTUP
FAULT
SEQUENCE
TM Low
EN High
VAUX Low
Powertrain Stopped
ENABLE falling edge,
or OTP detected
Input OVLO or UVLO,
Output OCP,
or UTP detected
Short Circuit detected
SUSTAINED
OPERATION
TM PWM
EN High
VAUX High
Powertrain Active
BCM^® Bus Converter
Page 17 of 30
Rev 1.1
01/2017
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