TION

As various kinds of information is available at the

same pin (clipping detection, output fault, thermal

proximity), this signal must be handled properly in

order to discriminate each event.

This could be done by taking into account the dif-

ferent timing of the diagnostic output during each

case.

SOFT SHORT

OUT TO Vs SHORT

FAULT DETECTION

CORRECT TURN-ON

OUT TO GND SHORT

t

t

t

ST-BY PIN

VOLTAGE

2V

OUTPUT

WAVEFORM

Vpin 10

CHECK AT TURN-ON

(TEST PHASE)

SHORT TO GND

OR TO Vs

D94AU149A

Figure 24: Fault Waveforms

t

t

t

ST-BY PIN

VOLTAGE

Vs

OUTPUT

WAVEFORM

Vpin 10

WAVEFORM

SHORT TO GND

OR TO Vs

D94AU150

CLIPPING

THERMAL

PROXIMITY

Figure 25: Waveforms

TDA737

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