Rev 1.3

vicorpower.com

Page 11 of 23

05/2015

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BCM400y500x1K8A31

FAULT

SEQUENCE

EN High

Powertrain Stopped

V

V

t

ONE TIME DELAY

INITIAL STARTUP

Fault

Auto-

recovery

ENABLE falling edge,

or OTP detected

Input OVLO or UVLO,

Output OCP,

or UTP detected

ENABLE falling edge,

or OTP detected

Input OVLO or UVLO,

Output OCP,

or UTP detected

Short Circuit detected

Application

of V

IN

SUSTAINED

OPERATION

EN High

Powertrain Active

STARTUP SEQUENCE

EN High

Powertrain Stopped

STANDBY SEQUENCE

EN High

Powertrain Stopped

High Level Functional State Diagram

Conditions that cause state transitions are shown along arrows. Sub-sequence activities listed inside the state bubbles.