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TPA3220 Datasheet(PDF) 24 Page - Texas Instruments

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Part # TPA3220
Description  60-W Stereo, 100-W Peak HD Analog-Input, Pad-Down Class-D Amplifier
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

TPA3220 Datasheet(HTML) 24 Page - Texas Instruments

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TPA3220
SLASEN3 – JANUARY 2018
www.ti.com
Product Folder Links: TPA3220
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Copyright © 2018, Texas Instruments Incorporated
(1)
Stuck at Fault occurs when input OSC_IO input signal frequency drops below minimum frequency given in the Electrical Characteristics
table of this data sheet.
9.4.5.7 Fault Handling
If a fault situation occurs while in operation, the device acts accordingly to the fault being a global or a channel
fault. A global fault is a chip-wide fault situation and causes all PWM activity of the device to be shut down, and
will assert FAULT low. A global fault is a latching fault and clearing FAULT and restarting operation requires
resetting the device by toggling RESET. De-asserting RESET should never be allowed with excessive system
temperature, so it is advised to monitor RESET with a system microcontroller and only release RESET (RESET
high) if the OTW_CLIP signal is cleared (high). A channel fault results in shutdown of the PWM activity of the
affected channel(s). Note that asserting RESET low forces the FAULT signal high, independent of faults being
present.
Table 6. Error Reporting
Fault/Event
Fault/Event
Description
Global or Channel
Reporting Method
Latched/Self
Clearing
Action needed to
Clear
Output FETs
PVDD_X UVP
Voltage Fault
Global
FAULT pin
Self Clearing
Increase affected
supply voltage
HI-Z
PVDD_X OVP
AVDD UVP
POR (AVDD UVP)
Power On Reset
Global
FAULT pin
Self Clearing
Allow AVDD to rise
HI-Z
OTW
Thermal Warning
Global
OTW pin
Self Clearing
Cool below OTW
threshold
Normal operation
OTE
Thermal Shutdown
Global
FAULT pin
Latched
Toggle RESET
HI-Z
OLP (CB3C>1.7 ms)
OC Shutdown
Channel
FAULT pin
Latched
Toggle RESET
HI-Z
CB3C
OC Limiting
Channel
None
Self Clearing
Reduce signal level
or remove short
Flip state, cycle by
cycle at fs/3
Stuck at Fault(1)
No OSC_IO activity
in Slave Mode
Global
None
Self Clearing
Resume OSC_IO
activity
HI-Z


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