MITSUBISHI SEMICONDUCTOR <Application Specific Intelligent Power Module>

PS12036

FLAT-BASE TYPE

INSULATED TYPE

Mar. 2002

SC

Ic(A)

OC

tw (

µs)

Over current trip level

Collector current

Short circuit trip level

10

2

0

CURRENT ABNORMALITY PROTECTIVE FUNCTIONS

ARM-SHOOT-THROUGH INTER-LOCK PROTECTIVE FUNCTION

Protection is achieved by monitoring and filtering the N-side DC-Bus

current. When a current trip-level is exceeded all the N-side IGBTs are

intercepted (turned OFF) and a fault-signal is output. After the fault-sig-

nal output duration (1.8m sec (typ.)@25

°C), the interception is Reset

at the following OFF input signal level (more than 4.0V).

(Fig. 5)

ON

ON

a1

b4

b3

b2

b1

a4

a3

a2

0

0

(Fig. 6)

Description:

(1) During the ON-State of either of the upper-arm or the lower-arm IGBT, the inter-lock protection circuit blocks any erroneous ON pulses (re-

sulting from input noise) from triggering the other arm IGBT and thus it prevents the arm-shoot-through situation.

(2) When two ON-signals are received for both the upper and the lower arms, the signal received first will be passed to the IGBT and the sec-

ond signal will be blocked. The second signal will be passed to its corresponding IGBT immediately after the first signal is OFF.

Note: This protective function provides no fault signaling output. The Dead-Time has to be set using the micro-controller (CPU).

b1. N-side normal ON-signal

⇒ N-side IGBT gate turns ON.

b2. Simultaneous ON-signals

⇒ P-side IGBT gate remains OFF.

b3. N-side receives OFF-signal

⇒ N-side IGBT gate turns OFF.

b4. Immediately after (b3)

⇒ P-side IGBT gate turns ON.

Operation:

a1. P-side normal ON-signal

⇒ P-side IGBT gate turns ON.

a2. N-side erroneous ON-signal

⇒ N-side IGBT gate remains OFF.

a3. While P-side ON-signal remains

⇒ P-side IGBT gate remains ON.

a4. N-side normal ON-signal

⇒ N-side IGBT gate turns ON.

RECOMMENDED I/O INTERFACE CIRCUIT

(Fig. 7)

Vamp

GND

ASIPM

5V

5V

VD(15V)

CPU

5.1k

Ω

10k

Ω

0.1nF

Up, Vp, Wp, Un, Vn, Wn