TAS6424QDKQRQ1 - 75W 4-Ch Class-D Auto Audio Amp | Texas Instruments
料号： TAS6424QDKQRQ1 ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $8.51 | $8.51 |
| 10 | $7.66 | $76.60 |
| 100 | $6.81 | $681.00 |
| 500 | $6.13 | $3,065.00 |
| 1,000 | $5.45 | $5,450.00 |
TAS6424QDKQRQ1 概述
A Class-D audio amplifier is a switching amplifier topology that uses pulse-width modulation (PWM) at high frequency (typically hundreds of kHz to several MHz) to drive the output stage fully on or fully off. Because the output transistors spend almost no time in their linear region, theoretical efficiency approaches 100%, versus 30-50% for Class-AB designs. This efficiency gain translates directly to less heat dissipation, smaller heatsinks, and lower automotive battery drain - critical for electric vehicles where every watt matters. Within the power-management hierarchy, Class-D amplifiers sit between Class-AB audio stages and the broader system PMIC family; TAS6424-Q1 belongs to the AEC-Q100-qualified automotive tier.
Key features include a 2.1 MHz PWM switching frequency (selectable above or below the AM band to eliminate AM-band interference), integrated load-dump protection up to 40 V, I2C diagnostics for channel status and fault reporting, and support for both 2.1 MHz and 384 kHz switching modes. The digital input accepts I2S, TDM, and LJ/RJ formats, allowing direct connection to most automotive infotainment SoCs without an external DAC. The high switching frequency enables a cost-optimized solution with very small PCB footprint by reducing output LC filter size.
Typical applications include automotive head units, external amplifiers, and premium infotainment systems where four channels of high-fidelity audio are required in a thermally constrained environment. The load-dump protection and AEC-Q100 qualification make it specifically suited for 12 V and 24 V automotive battery rails, including transient survival during alternator load-dump events.
When designing with this device, choose the switching frequency strategically. Above-AM operation (1.89-2.1 MHz) eliminates AM-band interference but slightly reduces efficiency; below-AM operation (~384 kHz) optimizes efficiency but requires careful output filter design to suppress AM-band EMI. Always connect the exposed thermal pad to a copper pour of at least 100 mm^2 to keep junction temperature within the -40C to +125C operating range at full output power.
This page synthesizes distributor pricing, drop-in alternatives from the same TI family, and practical design notes not found in the manufacturer datasheet alone, giving automotive audio engineers a faster path to a qualified, production-ready design.
直接替换替代料： TAS6424QDKQRQ1 ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： TAS6424QDKQRQ1 （相同外形与封装尺寸） ——差异在于 Number of Channels, Package.
快速对比工具——选择替代料号进行并排对比：
TAS6424LQDKQRQ1
✅ 直接替换📋 参考替代料（不在目录中）
TAS6424MQDKQRQ1
✅ 直接替换📋 参考替代料（不在目录中）
TAS6424EQDKQRQ1
✅ 直接替换📋 参考替代料（不在目录中）
TAS6422EQDKQRQ1
✅ 直接替换📋 参考替代料（不在目录中）
TAS6424QDKQQ1
✅ 直接替换📋 参考替代料（不在目录中）
TAS6424LQDKQQ1
✅ 直接替换📋 参考替代料（不在目录中）
TAS6424QDKQRQ1 最大额定值与电气特性
| 拓扑 | Class-D (PWM switching) |
| Number of Channels | 4 (Quad) |
| Output Power (per channel) | 75 W into 4 ohm (max, 10% THD+N) |
| Output Power (2 ohm load) | 45 W per channel (14.4 V supply) |
| Supply Voltage Range | 4.5 V to 26.4 V |
| PWM Switching Frequency | 2.1 MHz (above AM band) or 384 kHz (below AM band) |
| Load-Dump Protection | Up to 40 V |
| Audio Bandwidth | Up to 40 kHz |
| Audio Input Format | I2S, TDM, LJ, RJ (digital input) |
| Diagnostics Interface | I2C |
| 工作温度 | -40C to +125C |
| 封装 | 56-pin HSSOP PowerPAD (DKQ) |
| 安装类型 | Surface Mount |
| MSL 等级 | 3 (168 hours) |
| Automotive Qualification | AEC-Q100 Grade 1 |
TAS6424QDKQRQ1 56-pin hssop powerpad (dkq) 引脚配置指南
TAS6424QDKQRQ1（56-pin hssop powerpad (dkq) 封装）的引脚配置。 该模拟元件具有输入、输出和电源引脚。请参阅制造商数据手册以了解失调调零、补偿和使能引脚配置。适用于信号调理和放大器电路。
暂无详细引脚数据： TAS6424QDKQRQ1.
请参阅 数据手册 以查看完整引脚配置。
典型应用
TAS6424QDKQRQ1 适用于 7 应用s: Automotive Head Unit Amplifier, External Automotive Amplifier (After-Market), Premium Infotainment System Amplifier, Active Noise Cancellation (ANC) System, Electric Vehicle Warning Sound Generator, Marine and Heavy Equipment Audio, Industrial Multi-Channel Audio Annunciation.
Automotive Head Unit Amplifier
The TAS6424QDKQRQ1 is purpose-built for automotive head-unit audio amplification, where four channels (front left, front right, rear left, rear right) deliver full-range audio to the cabin speaker array. Its 75 W per channel into 4 ohm capability drives mid-range and full-range speakers cleanly from a 14.4 V battery rail without an external booster supply. The digital I2S/TDM input connects directly to the head-unit SoC, eliminating an external DAC and reducing BOM cost. AEC-Q100 Grade 1 qualification and integrated 40 V load-dump protection ensure survival of cranking transients and alternator field-collapse events common in 12 V automotive electrical systems.
推荐
External Automotive Amplifier (After-Market)
The TAS6424QDKQRQ1 suits external aftermarket automotive amplifiers that mount in the trunk, under-seat, or in the engine bay and drive upgraded speaker systems. Its 56-pin HSSOP PowerPAD package with the exposed thermal pad up allows direct attachment of an external heatsink, sustaining continuous high-power output in enclosed mounting locations with limited airflow. The 4.5 V to 26.4 V supply range supports both 12 V and 24 V battery systems, making it compatible with cars, heavy trucks, and recreational vehicles. The 2.1 MHz switching frequency enables small output filter inductors, allowing a compact amplifier chassis that fits behind seats or under trim panels.
推荐
Premium Infotainment System Amplifier
For premium infotainment systems requiring high-fidelity multi-channel audio, the TAS6424QDKQRQ1's 40 kHz audio bandwidth supports high-resolution audio formats beyond CD quality. The selectable 2.1 MHz or 384 kHz PWM frequency lets designers trade efficiency for AM-band EMI immunity depending on the system architecture - choose 384 kHz for best efficiency in head units near the antenna, or 2.1 MHz for premium audio systems where AM-band interference is less critical. I2C diagnostics report channel faults, thermal warnings, and load impedance anomalies to the infotainment host, enabling predictive maintenance and end-of-line testing in production.
推荐
Active Noise Cancellation (ANC) System
In active noise cancellation systems, the TAS6424QDKQRQ1 drives multiple speakers to produce anti-phase sound waves that cancel cabin road and engine noise. The four channels can be configured to drive headrest speakers, door speakers, or a combination of both, with the digital audio input accepting processed ANC signals from the host DSP. Fast loop latency (achieved by the 2.1 MHz switching frequency) is critical for effective noise cancellation at low frequencies. AEC-Q100 qualification ensures reliable operation across the full automotive temperature range, including underhood and under-seat mounting positions where temperatures can reach +85C ambient.
推荐
Electric Vehicle Warning Sound Generator
Electric vehicles require artificial sound generators to alert pedestrians at low speeds (compliance with FMVSS 141 and UN R138 regulations). The TAS6424QDKQRQ1's four channels can drive multiple external speakers positioned around the vehicle to create a 360-degree acoustic field. The high efficiency (typically 90%+ for Class-D) minimizes battery drain, which is critical for EV range. The 4.5 V minimum supply allows operation from the 12 V auxiliary battery even during cold-cranking events where the main traction battery is offline. Load-dump protection survives the inductive transients generated by the EV power electronics.
推荐
Marine and Heavy Equipment Audio
Although AEC-Q100 qualified for automotive, the TAS6424QDKQRQ1's wide supply range (4.5 V to 26.4 V), load-dump protection to 40 V, and -40C to +125C operating temperature make it suitable for marine audio systems, construction equipment, agricultural vehicles, and other harsh-environment applications. The four channels drive cabin speakers in boats, off-highway vehicles, and heavy trucks where 12 V or 24 V battery systems are standard. The digital input provides noise immunity over long analog cable runs typical in large vehicles. The PowerPAD package supports direct heatsink attachment for sustained high-power output in engine-bay installations with high ambient temperatures.
推荐
Industrial Multi-Channel Audio Annunciation
Industrial environments require multi-channel audio for public address, alarm annunciation, and operator warning systems. The TAS6424QDKQRQ1 drives four separate zones or speaker arrays from a single amplifier IC, reducing system cost and complexity compared to using four discrete single-channel amplifiers. The 26.4 V supply tolerance accommodates 24 V industrial battery systems with charging transients. The I2C diagnostics interface allows remote monitoring of channel status, fault conditions, and load impedance for predictive maintenance in factory automation, mining, and process control applications where on-site service is expensive.
推荐
推荐产品汇总
工程参考数据： TAS6424QDKQRQ1 ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | TAS6424LQDKQRQ1 | TAS6424MQDKQRQ1 | TAS6424EQDKQRQ1 | TAS6422EQDKQRQ1 | TAS6424QDKQQ1 | TAS6424LQDKQQ1 |
|---|---|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 56-pin HSSOP PowerPAD (DKQ) | 56-pin HSSOP PowerPAD (DKQ) | 56-pin HSSOP PowerPAD (DKQ) | 56-pin HSSOP PowerPAD (DKQ) | 56-pin HSSOP PowerPAD | 56-pin HSSOP PowerPAD (DKQ) | 56-pin HSSOP PowerPAD (DKQ) |
| Number of Channels | 4 | 4 | 4 | 4 | 2 | 4 | 4 |
| Output Power (per channel, 4 ohm) | 75 W | 45 W | 27 W | 75 W | 75 W (2-ch) | 75 W | 45 W |
| Supply Voltage Range | 4.5 V to 26.4 V | 4.5 V to 26.4 V | 4.5 V to 26.4 V | 4.5 V to 26.4 V | 4.5 V to 26.4 V | 4.5 V to 26.4 V | 4.5 V to 26.4 V |
| PWM Switching Frequency | 2.1 MHz / 384 kHz selectable | 2.1 MHz / 384 kHz selectable | 2.1 MHz / 384 kHz selectable | 2.1 MHz / 384 kHz selectable | 2.1 MHz / 384 kHz selectable | 2.1 MHz / 384 kHz selectable | 2.1 MHz / 384 kHz selectable |
| Load-Dump Protection | Up to 40 V | Up to 40 V | Up to 40 V | Up to 40 V | Up to 40 V | Up to 40 V | Up to 40 V |
| Audio Input Format | I2S / TDM / LJ / RJ | I2S / TDM / LJ / RJ | I2S / TDM / LJ / RJ | I2S / TDM / LJ / RJ | I2S / TDM / LJ / RJ | I2S / TDM / LJ / RJ | I2S / TDM / LJ / RJ |
| Automotive Qualification | AEC-Q100 Grade 1 | AEC-Q100 Grade 1 | AEC-Q100 Grade 1 | AEC-Q100 Grade 1 | AEC-Q100 Grade 1 | AEC-Q100 Grade 1 | AEC-Q100 Grade 1 |
| Operating Temperature | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C |
关键差异点
- Highest output power in 4-channel TAS6424-Q1 family （对比 TAS6424LQDKQRQ1)
- Quad-channel in single IC reduces PCB area （对比 TAS6422EQDKQRQ1)
- 2.1 MHz switching enables small output filters （对比 TAS6424MQDKQRQ1)
设计说明
The TAS6424QDKQRQ1's 56-pin HSSOP PowerPAD package has an exposed thermal pad that MUST be soldered to a PCB copper pour of at least 100 mm^2 (approximately 10 mm x 10 mm) on the top layer for sustained high-power operation. At 75 W per channel into 4 ohm from a 14.4 V supply, total amplifier dissipation can exceed 20 W when driving all four channels simultaneously at peak music power. Without adequate copper spreading, junction temperature will exceed the +125C maximum and trigger thermal shutdown. For continuous full-power operation, consider attaching an external heatsink to the top-side exposed pad.
Place a 470 uF aluminum electrolytic bulk capacitor directly at the PVDD supply pin to provide instantaneous current during music peaks; the amplifier can demand several amps in microseconds when driving low-impedance loads at high output. Add a 1 uF ceramic decoupling capacitor within 5 mm of each PVDD pin for high-frequency noise suppression. The 4.5 V minimum operating voltage enables cranking survival, but ensure the upstream 12 V regulator can supply the peak current without significant droop below 4.5 V at the amplifier pins.
The TAS6424QDKQRQ1's 2.1 MHz switching frequency requires careful PCB layout to minimize EMI. Use a four-layer PCB with a continuous ground plane on layer 2 directly beneath the amplifier and output filter components. Keep the output filter LC components within 10 mm of the amplifier output pins to minimize radiated emissions. Route the digital audio I2S/TDM signals on an inner layer with ground shielding on both sides, away from the analog power traces. Use differential routing for the output signals to the speaker connectors to reduce common-mode EMI.
Do not operate the TAS6424QDKQRQ1 without the output LC filter - the high dv/dt switching transients will radiate excessive EMI and may damage the speakers. Select the LC filter inductor and capacitor values per TI's reference design to maintain stability and meet automotive CISPR 25 EMI requirements. Avoid running all four channels at maximum continuous power simultaneously in a sealed enclosure without adequate thermal management; derate output power by 30-40% in such installations. The I2C address is hardware-strapped; ensure no address conflicts with other I2C devices on the same bus.
合规信息
AEC-Q100 Grade 1 qualified. RoHS and REACH compliant per TI product page. Halogen-free per TI automotive grade product family standard.
