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參數(shù)資料
| 型號(hào)： | TAS5615DKD2EVM |
| 廠商： | Texas Instruments |
| 文件頁(yè)數(shù)： | 15/36頁(yè) |
| 文件大小： | 0K |
| 描述： | EVAL MODULE FOR TAS5615 |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 系列： | * |
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SLAS595B – JUNE 2009 – REVISED FEBRUARY 2010
www.ti.com
ERROR REPORTING
The SD, OTW, OTW1 and OTW2 pins are active-low, open-drain outputs. Their function is for protection-mode
signaling to a PWM controller or other system-control device.
Any fault resulting in device shutdown is signaled by the SD pin going low. Likewise, OTW and OTW2 go low
when the device junction temperature exceeds 125°C and OTW1 goes low when the junction temperature
exceeds 100°C (see the following table).
SD
OTW1
OTW2, OTW
DESCRIPTION
0
Overtemperature (OTE) or overload (OLP) or undervoltage (UVP). Junction temperature higher than 125°C
(overtemperature warning)
0
1
Overload (OLP) or undervoltage (UVP). Junction temperature higher than 100°C (overtemperature
warning)
0
1
Overload (OLP) or undervoltage (UVP). Junction temperature lower than 100°C
1
0
Junction temperature higher than 125°C (overtemperature warning)
1
0
1
Junction temperature higher than 100°C (overtemperature warning)
1
Junction temperature lower than 100°C and no OLP or UVP faults (normal operation)
Note that asserting either RESET low forces the SD signal high, independent of faults being present. TI
recommends monitoring the OTW signal using the system microcontroller and responding to an overtemperature
warning signal by, e.g., turning down the volume to prevent further heating of the device resulting in device
shutdown (OTE).
To reduce external component count, an internal pullup resistor to 3.3 V is provided on both SD and OTW
outputs. Level compliance for 5-V logic can be obtained by adding external pullup resistors to 5 V (see the
Electrical Characteristics section of this data sheet for further specifications).
DEVICE PROTECTION SYSTEM
The TAS5615 contains advanced protection circuitry carefully designed to facilitate system integration and ease
of use, as well as to safeguard the device from permanent failure due to a wide range of fault conditions such as
short circuits, overload, overtemperature, and undervoltage. The TAS5615 responds to a fault by immediately
setting the power stage in a high-impedance (Hi-Z) state and asserting the SD pin low. In situations other than
overload and overtemperature error (OTE), the device automatically recovers when the fault condition has been
removed, i.e., the supply voltage has increased.
The device functions on errors, as shown in the following table
BTL
MODE
PBTL
MODE
SE
MODE
LOCAL
TURNS OFF
LOCAL
TURNS OFF
LOCAL
TURNS OFF
ERROR IN
A
A+B
A
A+B+C+D
A
A+B
B
C
C+D
C
C+D
D
Bootstrap UVP does not shut down according to the table, it shuts down the respective half-bridge.
PIN-TO-PIN SHORT CIRCUIT PROTECTION (PPSC)
The PPSC detection system protects the device from permanent damage in the case that a power output pin
(OUT_X) is shorted to GND_X or PVDD_X. For comparison, the OC protection system detects an overcurrent
after the demodulation filter where PPSC detects shorts directly at the pin before the filter. PPSC detection is
performed at start-up, i.e., when VDD is supplied; consequently, a short to either GND_X or PVDD_X after
system start-up does not activate the PPSC detection system. When PPSC detection is activated by a short on
the output, all half-bridges are kept in a Hi-Z state until the short is removed; the device then continues the
start-up sequence and starts switching. The detection is controlled globally by a two-step sequence. The first
step ensures that there are no shorts from OUT_X to GND_X; the second step tests that there are no shorts
from OUT_X to PVDD_X. The total duration of this process is roughly proportional to the capacitance of the
22
Copyright 2009–2010, Texas Instruments Incorporated
Product Folder Link(s) :TAS5615
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| TAS5615DKDR | 功能描述:音頻放大器 Ana inp 150W Stereo class D Amplifier RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| TAS5615PHD | 功能描述:音頻放大器 Analog input 160W RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| TAS5615PHD2EVM | 功能描述:音頻 IC 開發(fā)工具 TAS5615PHD Eval Mod RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Kits 類型:Audio Amplifiers 工具用于評(píng)估:TAS5614L 工作電源電壓:12 V to 38 V |
| TAS5615PHDR | 功能描述:音頻放大器 Analog input 160W RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| TAS5616 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:160-W STEREO / 300-W MONO PurePatha?￠ HD DIGITAL-INPUT POWER STAGE |
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