IR211(4,41)/IR221(4,41)SSPbF

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11

HO/LO Status

HOP/LOP

HON/LON

SSDH/SSDL

0

HiZ

0

HiZ

1

1

HiZ

HiZ

SSD

HiZ

HiZ

0

LO/HO

Output follows inputs (in=1->out=1, in=0->out=0)

Output keeps previous status

IR2214 Logic Table: Output Drivers Status Description

INPUTS

INPUT/OUTPUT

Undervoltage

Yes: V< UV

threshold

No : V> UV

threshold

X: don’t care

OUTPUTS

Operation

Hin

Lin

FLT_CLR

______

SY_FLT

SSD: desat (out)

HOLD: freezing

(in)

_________

FAULT/SD

SD: shutdown (in)

FAULT: diagnostic

(out)

HO

LO

Shutdown

X

X

X

X

0 (SD)

X

X

0

0

Fault Clear

NOTE1

(FAULT)

No

No

HO

LO

1

0

0

1

1

No

No

1

0

0

1

0

1

1

No

No

0

1

Normal

Operation

0

0

0

1

1

No

No

0

0

Anti Shoot

Through

1

1

0

1

1

No

No

0

0

1

0

0

(SSD)

1

No

No

SSD

0

Soft

Shutdown

(entering)

0

1

0

(SSD)

1

No

No

0

SSD

X

X

0

(SSD)

(FAULT)

No

No

0

0

Soft

Shutdown

(finishing)

X

X

0

(SSD)

(FAULT)

No

No

0

0

Freeze

X

X

X

0 (HOLD)

1

No

No

X

X

1

1

No

Yes

0

LO

Undervoltage

X

X

X

1

0 (FAULT)

Yes

X

0

0

NOTE 1: SY_FLT automatically resets after the SSD event is over and FLT_CLR is not required. In order to avoid the

FLT_CLR conflicting with the SSD procedure, FLT_CLR should not be operated while SY_FLT is active.