IR22141SS datasheet(17/28 Pages) IRF

17 / 28 page

IR2214/IR22141(SS)

www.irf.com

ADVANCE DATA

It must be noted that while in Soft Shut Down,

both Under Voltage fault and external Shut Down

(SD) are masked until the end of SSD.

Desaturation protection is working independently

by the other entire control pin and it is disabled

only when the output status is off.

VCC

LIN

HIN

FLT_CLR

HOP

HON

SSH

DSH

LOP

LON

SSL

DSL

COM

VSS

SY_FLT

FAULT/SD

VCC

LIN

HIN

FLT_CLR

HOP

HON

SSH

DSH

LOP

LON

SSL

DSL

COM

VSS

SY_FLT

FAULT/SD

VCC

LIN

HIN

FLT_CLR

HOP

HON

SSH

DSH

LOP

LON

SSL

DSL

COM

VSS

SY_FLT

FAULT/SD

phase U

phase V

phase W

FAULT

4.2.2

Fault management in multi-phase

systems

In a system with two or more gate drivers the

IR2214 devices must be connected as in figure 15.

SY_FLT.

The bi-directional SY_FLT pins communicate

each other in the local network. The logic signal

is active low.

The device that detects the IGBT desaturation

activates the SY_FLT, which is then read by the

other gate drivers. When SYS_FLT is active all

the drivers hold their output state regardless the

input signals (H

IN, LIN) they receive from the

controller (freeze state).

This feature is particularly important in phase-

to-phase short circuit where two IGBTs are

involved; in fact, while one is softly shutting-down,

the other must be prevented from hard shutdown

to avoid vanishing SSD.

In the Freeze state the frozen drivers are not

completely inactive because desaturation

detection still takes the highest priority.

SY_FLT communication has been designed for

creating a local network between the drivers.

There is no need to wire SY_FLT to the controller.

FAULT/SD

The bi-directional FAULT/SD pins communicates

each other and with the system controller. The

logic signal is active low.

When low, the FAULT/SD signal commands the

outputs to go off by hard shutdown. There are

three events that can force FAULT/SD low:

1. Desaturation detection event: the

FAULT\SD pin is latched low when SSD

is over, and only a FLT_CLR signal can

reset it.

Figure 15:

IR2214 application in 3ph system.

IR22141SS Datasheet(PDF) 17 Page - International Rectifier

IR22141SS Datasheet(HTML) 17 Page - International Rectifier

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28

Datasheet Download

Link URL