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| 型号： | TAS5601DCARG4 |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 20 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO56 |
| 封装： | GREEN, PLASTIC, HTSSOP-56 |
| 文件页数： | 8/26页 |
| 文件大小： | 2698K |
| 代理商： | TAS5601DCARG4 |
SHORT-CIRCUIT PROTECTION
THERMAL PROTECTION
PRINTED-CIRCUIT BOARD (PCB) LAYOUT
BASIC MEASUREMENT SYSTEM
SLAS585A – FEBRUARY 2008 – REVISED SEPTEMBER 2008....................................................................................................................................... www.ti.com
The TAS5601 has short-circuit protection circuitry on the outputs that prevents damage to the device during
output-to-output shorts and output-to-GND shorts after the filter and output capacitor (at the speaker terminal.)
Directly at the device terminals, the protection circuitry prevents damage to device during output-to-output,
output-to-ground, and output-to-supply. When a short circuit is detected on the outputs, the part immediately
disables the output drive. This is latched fault and is cleared by cycling the RESET pin. Normal operation is
restored when the fault is removed.
The FAULT will transition low when a short is detected. The FAULT pin will be cleared after RESET is cycled.
Thermal protection on the TAS5601 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 20°C. The device begins normal
operation at this point with no external system interaction.
Thermal protection fault is NOT reported on the FAULT terminal.
A THERM_WARN terminal can be used to monitor when the internal device temperature reaches 125°C. The
terminal will transition low at this point and transition back high after the device cools approximately 20°C. It is
not necessary to cycle RESET to clear this warning flag.
Because the TAS5601 is a class-D amplifier that switches at a high frequency, the layout of the printed-circuit
board (PCB) should be optimized according to the following guidelines for the best possible performance.
Decoupling capacitors—The high-frequency 0.1-F decoupling capacitors should be placed as close to the
PVCC and AVCC terminals as possible. The BYPASS capacitor and VCLAMP_XX capacitors should also be
placed as close to the device as possible. Large (220-
F or greater) bulk power-supply decoupling capacitors
should be placed near the TAS5601 on the PVCCx terminals. For single-ended operation, a 220
F capacitor
should be placed on each PVCC pin. For Bridge-tied operation, a single 220
F, capacitor can be shared
between A and B or C and D.
Grounding—The AVCC decoupling capacitor and BYPASS capacitor should each be grounded to analog
ground (AGND). The PVCCx decoupling capacitors and VCLAMP_xx capacitors should each be grounded to
power ground (PGND). Analog ground and power ground should be connected at the thermal pad, which
should be used as a central ground connection or star ground for the TAS5601.
Output filter—The reconstruction LC filter should be placed as close to the output terminals as possible for the
best EMI performance. The capacitors should be grounded to power ground.
Thermal pad—The thermal pad must be soldered to the PCB for proper thermal performance and optimal
reliability. The dimensions of the thermal pad and thermal land are described in the mechanical section at the
back of the data sheet. See TI Technical Briefs SLMA002 and SLOA120 for more information about using the
thermal pad. For recommended PCB footprints, see figures at the end of this data sheet.
For an example layout, see the TAS5601 Evaluation Module (TAS5601EVM) User Manual, (SLOU189). Both the
EVM user manual and the thermal pad application note are available on the TI Web site at http://www.ti.com.
This section focuses on methods that use the basic equipment listed below:
Audio analyzer or spectrum analyzer
Digital multimeter (DMM)
Oscilloscope
Twisted-pair wires
Signal generator
Power resistor(s)
Linear regulated power supply
Filter components
16
Copyright 2008, Texas Instruments Incorporated
Product Folder Link(s): TAS5601
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相关代理商/技术参数 |
参数描述 |
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| TAS5601EVM4 | 功能描述:音频 IC 开发工具 TAS5601EVM4 Eval Mod RoHS:否 制造商:Texas Instruments 产品:Evaluation Kits 类型:Audio Amplifiers 工具用于评估:TAS5614L 工作电源电压:12 V to 38 V |
| TAS5602 | 制造商:TI 制造商全称:Texas Instruments 功能描述:20W STEREO DIGITAL AMPLIFIER POWER STAGE |
| TAS5602_1 | 制造商:TI 制造商全称:Texas Instruments 功能描述:20W STEREO DIGITAL AMPLIFIER POWER STAGE |
| TAS5602DCA | 功能描述:音频放大器 20W Stereo Dig Amp Pwr Stage RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| TAS5602DCAG4 | 功能描述:音频放大器 20W Stereo Dig Amp Pwr Stage w/ FB RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
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