PS22056 MITSUBISHI, PS22056 Datasheet - Page 7

• Manufacturer Part Number: PS22056
• Manufacturer: MITSUBISHI

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)
[B] Under-Voltage Protection (Lower-arm, UV
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. F
a6. Input = “L ” : IGBT OFF
a7. Input = “H” :
a8. IGBT OFF state in spite of input “H”.
b1. Control supply voltage rising : After the voltage level reaches UV
b2. Normal operation : IGBT ON and carrying current.
b3. Under voltage trip (UV
b4. IGBT OFF in spite of control input condition.
b5. F
b6. Under voltage reset (UV
b7. Normal operation : IGBT ON and carrying current.
O
O
output with a fixed pulse width determined by the external capacitor C
keeps output during the UV period, however, F
Control input
Protection circuit state
Control supply voltage V
Output current Ic
Error output Fo
Lower-arms control
input
Protection circuit state
Internal IGBT gate
Sense voltage of the
shunt resistor
Error output Fo
Output current Ic
Dt
).
Dr
).
D
UV
Dr
a1
D
b1
O
RESET
)
pulse is not less than the fixed width for very short UV interval.
SC
SET
a2
a5
a3
UV
SC reference voltage
b2
Dt
Dr
a4
CR circuit time
constant DELAY
, the circuits start to operate when next input is applied.
a6
SET
b3
b4
FO
a7
a8
RESET
b5
.
RESET
b6
TRANSFER-MOLD TYPE
INSULATED TYPE
b7
PS22056
May 2005