PS22056_12 Datasheet, PDF (7/9 Pages) Mitsubishi Electric Semiconductor – Dual-In-Line Package Intelligent Power Module

MITSUBISHI SEMICONDUCTOR <Dual-In-Line Package Intelligent Power Module>
PS22056
TRANSFER-MOLD TYPE
INSULATED TYPE
Fig. 5 TIMING CHARTS OF THE DIP-IPM PROTECTIVE FUNCTIONS
[A] Short-Circuit Protection (Lower-arms only with the external shunt resistor and CR filter)
a1. Normal operation : IGBT ON and carrying current.
a2. Short circuit current detection (SC trigger).
a3. IGBT gate hard interruption.
a4. IGBT turns OFF.
a5. FO output with a fixed pulse width determined by the external capacitor CFO.
a6. Input = “L ” : IGBT OFF
a7. Input = “H” :
a8. IGBT OFF state in spite of input “H”.
Lower-arms control
input
Protection circuit state
Internal IGBT gate
Output current Ic
Sense voltage of the
shunt resistor
Error output Fo
a6 a7
SET
RESET
a3
a2
SC
a1
a4
a8
SC reference voltage
CR circuit time
constant DELAY
a5
[B] Under-Voltage Protection (Lower-arm, UVD)
b1. Control supply voltage rising : After the voltage level reaches UVDr, the circuits start to operate when next input is applied.
b2. Normal operation : IGBT ON and carrying current.
b3. Under voltage trip (UVDt).
b4. IGBT OFF in spite of control input condition.
b5. FO keeps output during the UV period, however, FO pulse is not less than the fixed width for very short UV interval.
b6. Under voltage reset (UVDr).
b7. Normal operation : IGBT ON and carrying current.
Control input
Protection circuit state
RESET
SET
UVDr
Control supply voltage VD
b1
UVDt
b3
Output current Ic
b2
b4
RESET
b6
b7
Error output Fo
b5
May 2005