IM523-L6A datasheet(6/22 Pages) INFINEON

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V 2.0

2022-04-26

CIPOS™ Mini IM523

IM523-L6A

Pin Description

2.2

Pin Description

HIN(U, V, W) and LIN(U, V, W) (Low-side and high-

side control pins, Pin 7 - 12)

These pins are positive logic and they are

responsible for the control of the integrated IGBTs.

The Schmitt-trigger input thresholds of them are

such to guarantee LSTTL and CMOS compatibility

down to 3.3 V controller outputs. A pull-down

resistor of about 5 kΩ is internally provided to pre-

bias input during supply start-up, and a zener

clamp is provided to protect the pin. Negative

pulses down to an absolute minimum of -5.5 V are

allowed that offers an outstanding robustness.

Input Schmitt-trigger and noise filter provide noise

rejection to short input pulses.

The noise filter suppresses control pulses shoter

than the filter time tFIL,IN. The Figure 4 describes how

the filter works. An input pulse-width shorter than 1

µs is not recommended.

IM523

INPUT NOISE

FILTER



 k

Schmitt-Trigger

SWITCH LEVEL

VIH; VIL

VSS

HINx

LINx

VDD

Figure 3

Input pin structure

HIN

LIN

low

high

tFIL,IN

HIN

LIN

Figure 4

Input filter timing diagram

The integrated gate driver additionally provides a

shoot-through prevention capability that avoids

the simultaneous on-states of the same leg. When

both inputs of the same leg are activated, only

formerly activated one is remained activated so

that the leg is kept steadily in a safe state.

A minimum deadtime insertion of typically 360 ns is

also provided by driver, in order to reduce cross-

conduction of the IGBTs.

VFO (Fault-output and NTC, Pin 14)

The VFO pin indicates a module failure in case of

under voltage at pin VDD or in case of triggered

overcurrent detection at ITRIP. An external pull-up

resistor is required.

VFO

VSS

VDD

RON,FLT

From ITRIP - Latch

From UV detection

IM523

Thermistor

Figure 5

Internal circuit at pin VFO

The sleep function is activated after each trigger of

ITRIP or undervoltage lockout. A new edge input

signal is mandatory to activate gate drives after

fault-clear time as shown in Figure 10.

ITRIP (Overcurrent detection function, Pin 15)

The IM523 product family provides an overcurrent

detection function by connecting the ITRIP input

with the IGBT current feedback. The ITRIP

comparator threshold (typ. 0.525 V) is referenced to

VSS. An input noise filter (tITRIP = typ. 530 ns) prevents

the driver to detect false overcurrent events.

Overcurrent detection generates a shutdown of

outputs of the gate driver. Fast track shutdown

function allows low-side outputs to be turned off

faster than high side outputs about 200 ns.

The fault-clear time is set to minimum 100 µs.

U-phase low-side emitter

Motor W-phase output

Motor V-phase output

Motor U-phase output

Positive bus input voltage

No connection

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