PRM48BF480T400B00 Datasheet, PDF (6/22 Pages) Vicor Corporation – High Efficiency Remote Sense PRM Converter

PRM48BF480T400B00
5.0 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
STANDBY
SEQUENCE
PC: 10uA to LOW
Toff Timeout
PC: 90uA to HIGH
Powertrain Stopped
T_BLNK
expiry
PC HIGH
and
Toff expiry
Overtemp or Output
OVP
Fault
removed
PC HIGH
and
Ton expiry
STARTUP
SEQUENCE
PC: 1.8mA to HIGH
Ton timeout;
VC Pulse;
Powertrain Active
Delayed RE
BLANKING
PC: 1.8mA to HIGH
TBLNK Timeout
Powertrain Paused
Input OVP,
Input UVP,
or
OverCurrent Prot
SUSTAINED
OPERATION
PC: 1.8mA to HIGH
Powertrain Active
Short Circuit:
Vout < V_{SC_Vout}
and
Vpr > V_{SC_Vpr}
Vout < 1 V
And
T_SCR expiry
OUTPUT DISCHARGE
PC: pulsed 25mA drive
LOW
TSCR Timeout
Powertrain Stopped
IOD Output Discharge
PC
falling
edge
Short Removed:
Vout > V_{SC_VOUTR}
or
Vpr < V_{SC_VPR_R}
SHORT
CIRCUIT
PC: 1.8mA to HIGH
TSC Timeout
Powertrain Active
T_SC
expiry
PC
falling
edge
PRM® Regulator
Rev 1.1
800 927.9474