Datasheet

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3 Protection
3.1 Short-Circuit Protection and Fault Reporting Circuitry
3.2 Fault Reporting
Protection
From the files menu load the configuration file:
TAS5162DKD6EVM Configuration (1.00).cfg
The file is located on the PurePath™ CD-rom. This file contains all settings for a default setup of the EVM.
For easy access of the file it is recommended to copy the files into directory where the GUI is installed.
Default is C:\Program Files\Texas Instruments Inc\TAS5518\
For more advanced use of the GUI, refer to the GUI User’s Guide and data manual for the TAS5518.
This chapter describes the short-circuit protection and fault reporting circuitry of the TAS5162 (SLES194 )
device.
The TAS5162 is a self-protecting device that provides fault reporting (including high-temperature
protection and short-circuit protection). TAS5162 is configured in back-end auto-recovery mode, and
therefore, resets automatically after all errors (M1, M2 and M3 are set low), see the data sheet for further
explanation. This mean that the device will restart itself after an error occasion and reports through the SD
error signal.
The OTW and SD outputs from TAS5162 indicate fault conditions. See the TAS5162 data manual for a
description of these pins.
Table 3. TAS5162 Warning/Error Signal Decoding
OTW SD Device Condition
0 0 High temperature error and/or high current error
0 1 High temperature warning
1 0 Undervoltage lockout or high current error
1 1 Normal operation, no errors/warnings
The temperature warning signals at the TAS5162DKD6EVM board are wired — or to one temperature
warning signal ( OTW - pin 22 in control interface connector). Shutdown signals are wired-or into one
shutdown signal ( SD - pin 20 in control interface connector).
The shutdown signals together with the temperature warning signal give chip state information as
described in Table 3 . Device fault reporting outputs are open-drain outputs.
SLAU223 – June 2007 TAS5162DKD6EVM 7
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