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參數(shù)資料
| 型號： | TPA3110D2PWPR |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 15 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO28 |
| 封裝： | GREEN, PLASTIC, HTSSOP-28 |
| 文件頁數(shù)： | 11/34頁 |
| 文件大?。?/td> | 976K |
| 代理商： | TPA3110D2PWPR |
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www.ti.com
SLOS528C – JULY 2009 – REVISED AUGUST 2010
PBTL Select
TPA3110D2 offers the feature of parallel BTL operation with two outputs of each channel connected directly. If
the PBTL pin (pin 14) is tied high, the positive and negative outputs of each channel (left and right) are
synchronized and in phase. To operate in this PBTL (mono) mode, apply the input signal to the RIGHT input and
place the speaker between the LEFT and RIGHT outputs. Connect the positive and negative output together for
best efficiency. For an example of the PBTL connection, see the schematic in the APPLICATION INFORMATION
section.
For normal BTL operation, connect the PBTL pin to local ground.
SHORT-CIRCUIT PROTECTION AND AUTOMATIC RECOVERY FEATURE
TPA3110D2 has protection from overcurrent conditions caused by a short circuit on the output stage. The short
circuit protection fault is reported on the FAULT pin as a low state. The amplifier outputs are switched to a Hi-Z
state when the short circuit protection latch is engaged. The latch can be cleared by cycling the SD pin through
the low state.
If automatic recovery from the short circuit protection latch is desired, connect the FAULT pin directly to the SD
pin. This allows the FAULT pin function to automatically drive the SD pin low which clears the short-circuit
protection latch.
THERMAL PROTECTION
Thermal protection on the TPA3110D2 prevents damage to the device when the internal die temperature
exceeds 150°C. There is a ±15°C tolerance on this trip point from device to device. Once the die temperature
exceeds the thermal set point, the device enters into the shutdown state and the outputs are disabled. This is not
a latched fault. The thermal fault is cleared once the temperature of the die is reduced by 15°C. The device
begins normal operation at this point with no external system interaction.
Thermal protection faults are NOT reported on the FAULT terminal.
Copyright 2009–2010, Texas Instruments Incorporated
19
Product Folder Link(s) :TPA3110D2
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