MITSUBISHI SEMICONDUCTOR <Dual-In-Line Package Intelligent Power Module>

PS21965-4S

TRANSFER-MOLD TYPE

INSULATED TYPE

Mar. 2007

6

Error output Fo

Output current Ic

Protection circuit state

Control input

b1

b2

b3

b4

b5

RESET

RESET

SET

b6

b7

Protection circuit state

Lower-side control

input

Error output Fo

Sense voltage of the

shunt resistor

Output current Ic

Internal IGBT gate

SC reference voltage

CR circuit time

constant DELAY

a5

a8

a4

a3

a1

a2

SC

RESET

SET

a7

a6

Fig. 3 TIMING CHART OF THE DIP-IPM PROTECTIVE FUNCTIONS

[A] Short-Circuit Protection (Lower-side only with the external shunt resistor and CR filter)

a1. Normal operation : IGBT ON and carrying current.

a2. Short circuit detection (SC trigger).

a3. IGBT gate hard interruption.

a4. IGBT turns OFF.

a6. Input “L” : IGBT OFF.

a7. Input “H” : IGBT ON.

a8. IGBT OFF in spite of input “H”.

b2. Normal operation : IGBT ON and carrying current.

b4. IGBT OFF in spite of control input condition.

b7. Normal operation : IGBT ON and carrying current.