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POWEREX, INC., 200 E. HILLIS STREET, YOUNGWOOD, PENNSYLVANIA 15697-1800 (724) 925-7272
PS22056
INTELLIMOD? MODULE
DUAL-IN-LINE INTELLIGENT POWER MODULE
25 AMPERES/1200 VOLTS
PROTECTION FUNCTION TIMING DIAGRAMS
SHORT-CIRCUIT PROTECTION (N-SIDE ONLY, WITH EXTERNAL SHUNT RESISTOR AND CR FILTER)
A7
LOWER-SIDE
CONTROL INPUT
A6
PROTECTION
CIRCUIT STATE
INTERNAL IGBT GATE
SET
A3
RESET
OUTPUT CURRENT IC
SENSE VOLTAGE ON
THE SHUNT RESISTOR
FAULT OUTPUT FO
A1
SC
A2
A5
A4
A8
SC REFERENCE VOLTAGE
RC FILTER TIME
CONSISTANT DELAY
A1: NORMAL OPERATION – IGBT TURN ON AND CONDUCTING CURRENT.
A2: SHORT-CIRCUIT CURRENT DETECTED (SC TRIGGER).
A3: IGBT GATE HARD INTERRUPTED.
A4: IGBT TURN OFF.
A5: FO OUTPUT WITH A FIXED PULSE WIDTH (DETERMINED BY THE EXTERNAL CAPACITANCE CFO).
A6: INPUT “L” – IGBT OFF.
A7: INPUT “H” – IGBT ON IS BLOCKED DURING THE FO OUTPUT PERIOD.
A8: IGBT STAYS IN OFF STATE.
UNDER-VOLTAGE PROTECTION (N-SIDE, UVD)
CONTROL INPUT
PROTECTION
CIRCUIT STATE
RESET
SET
RESET
CONTROL SUPPLY
VOLTAGE VD
UVDR
B1
UVDT
B3
B6
OUTPUT CURRENT IC
FAULT OUTPUT FO
B2
B4
B5
B7
B1: CONTROL SUPPLY VOLTAGE RISE – AFTER THE VOLTAGE LEVEL REACHES UVDR, THE DRIVE CIRCUIT BEGINS TO WORK
AT THE RISING EDGE OF THE NEXT INPUT SIGNAL.
B2 : NORMAL OPERATION – IGBT TURN ON AND CONDUCTING CURRENT.
B3: UNDER-VOLTAGE TRIP (UVDT).
B4: IGBT TURN OFF REGARDLESS OF THE CONTROL INPUT LEVEL.
B5: FO ASSERTED DURING THE PERIOD FROM MINIMUM PULSE WIDTH OR UNTIL CONTROL SUPPLY RECOVER TO UVDR.
B6: UNDER-VOLTAGE RESET (UVDR).
B7: NORMAL OPERATION – IGBT TURN ON AND CONDUCTING CURRENT.
6
Rev. 10/05
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