PS21963-AT Mitsumi Electronics, Corp., PS21963-AT Datasheet - Page 8

• Manufacturer Part Number: PS21963-AT
• Manufacturer: Mitsumi Electronics, Corp.

Fig. 8 TIMING CHART OF THE DIPIPM PROTECTIVE FUNCTIONS
[A] Short-Circuit Protection (Lower-side only with the external shunt resistor and CR filter)
[B] Under-Voltage Protection (Lower-side, UV
a1. Normal operation : IGBT ON and carrying current.
a2. Short circuit detection (SC trigger).
a3. IGBT gate hard interruption.
a4. IGBT turns OFF.
a5. F
a6. Input “L” : IGBT OFF.
a7. Input “H” : IGBT ON.
a8. IGBT OFF 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
outputs (t
outputs (t
FO(min)
FO
Lower-side control
input
Protection circuit state
Internal IGBT gate
Sense voltage of the
shunt resistor
Error output Fo
Output current Ic
Control input
Protection circuit state
Control supply voltage V
Output current Ic
Error output Fo
≥ 20µs and F
= 20µs).
Dt
).
Dr
).
O
outputs continuously during UV period).
D
UV
a1
Dr
D
)
SC
RESET
b1
SET
a2
a5
a3
SC reference voltage
8
Dr
UV
a4
CR circuit time
constant DELAY
, the circuits start to operate when next input is applied.
b2
Dt
a6
a7
SET
a8
RESET
b3
b4
b5
PS21963-T/-AT/-CT/-TW
RESET
b6
TRANSFER-MOLD TYPE
b7
INSULATED TYPE
Mar. 2009