TAS6754QDKQRQ1 - Automotive 4-Ch Class-D Audio Amp | TI
MPN： TAS6754QDKQRQ1 ✓ 啟用中TAS6754QDKQRQ1 概覽
A Class-D audio amplifier is a switching amplifier that converts a digital or analog audio signal into a high-frequency pulse-width modulated square wave, which is then low-pass filtered to reconstruct the audio. Class-D topologies achieve high efficiency (typically 80-90%) because the output transistors operate as switches, minimizing power dissipation compared to linear Class-AB amplifiers. In automotive audio systems, this efficiency reduces heat-sinking requirements and extends the available audio power from the vehicle's electrical system.
Key features include four independent audio channels, 1L modulation that removes four inductors versus traditional designs, 2MHz switching for compact output filters, integrated current sense, and DC/AC real-time load diagnostics. The 19V rated supply is aligned with automotive audio power rails, and the AEC-Q100 Q1 suffix qualifies the device for automotive applications. The 56-pin HSSOP package supports surface-mount assembly with an exposed thermal pad for heat removal.
1L modulation is a proprietary Class-D scheme that uses a single inductor per bridge-tied-load channel, reducing system cost and size. The 2MHz switching rate moves the switching fundamental well above the audio band, simplifying the output low-pass filter and lowering out-of-band emissions. Integrated current sense and real-time load diagnostics monitor speaker health, enabling fault detection for shorts, opens, and degradation. The digital input accepts common automotive digital audio formats, eliminating the need for a separate DAC and analog front end.
Typical applications include automotive infotainment head units, external amplifier modules, EV pedestrian warning (AVAS), telematics/eCall audio, rear-seat entertainment, and commercial-vehicle audio. The device is especially suited for designs where four channels of clean audio must be delivered from a 19V rail with minimal inductor count and integrated diagnostic coverage.
When designing with the TAS6754QDKQRQ1, provide sufficient copper area on the exposed thermal pad and keep the output LC filter close to the device to minimize EMI. Verify the digital audio source timing and protocol against the datasheet before PCB layout.
直接替換替代品，適用於 TAS6754QDKQRQ1 — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： TAS6754QDKQRQ1 （相同外形與佔位） — 差異在於 Number of Channels, Package.
TAS6424QDKQRQ1
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →TAS6424EQDKQRQ1
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
TAS6584QDKQRQ1
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
TAS6422QDKQRQ1
⚡ 相同封裝 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
TAS6422EQDKQRQ1
⚡ 相同封裝 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
TAS6754QDKQRQ1 最大額定值與電氣特性
| Amplifier Type | Class-D audio amplifier |
| Number of Channels | 4 |
| Input Type | Digital input |
| Modulation | 1L modulation (one inductor per BTL channel) |
| 切換頻率 | 2 MHz |
| 供應電壓 | 19 V (automotive) |
| Current Sense | Integrated |
| Load Diagnostics | DC and AC real-time load diagnostics |
| 封裝 | 56-HSSOP (DKQ) with exposed thermal pad |
| 腳位數 | 56 |
| 安裝類型 | Surface Mount |
| AEC-Q100 | Qualified (Q1 suffix) |
| Datasheet Size | 59 pages, 2Mb PDF |
TAS6754QDKQRQ1 56-hssop (dkq) with exposed thermal pad 腳位配置指南
TAS6754QDKQRQ1（56-hssop (dkq) with exposed thermal pad 封裝）的腳位配置。 此類比元件具有輸入、輸出與電源腳位。偏移歸零、補償與致能腳位配置請參閱製造商資料表。適用於訊號調理與放大器電路。
無詳細腳位定義資料： TAS6754QDKQRQ1.
請參閱 資料表 以查看完整腳位配置。
典型應用
TAS6754QDKQRQ1 適用於 6 應用s: Automotive Infotainment Head Unit, External Amplifier Module, EV Warning Sound System (AVAS), Telematics and eCall Audio, Rear-Seat Entertainment, Heavy-Duty Commercial Vehicle Audio.
Automotive Infotainment Head Unit
The TAS6754QDKQRQ1 drives 4 speaker channels in a car radio or infotainment system, using 1L modulation to reduce inductor count. Its 19V supply fits automotive battery rails, and integrated current sense/diagnostics enable speaker fault detection. Placed between the head-unit SoC and the speakers, it converts the digital audio stream to high-efficiency Class-D power. Use a 2MHz LC output filter and adequate copper for the exposed pad to keep EMI low.
推薦
External Amplifier Module
In a standalone booster amplifier, the TAS6754QDKQRQ1 accepts a digital audio input and drives aftermarket speakers. Its 2MHz switching frequency allows compact output filters, and DC/AC load diagnostics report speaker health over the vehicle bus. The device is powered from a 19V boost or battery rail; add a 5V LDO for the digital interface. This module is suitable for premium audio upgrades where 4-channel output and low component count matter.
推薦
EV Warning Sound System (AVAS)
Electric vehicles require external pedestrian warning tones. The TAS6754QDKQRQ1 can amplify synthesized AVAS signals from an MCU with low latency and high efficiency. The integrated real-time load diagnostics ensure the external speaker is connected and functional, supporting OBD requirements. With 19V operation and 2MHz switching, it fits small ECU enclosures. The digital input simplifies connection to the vehicle audio bus or MCU.
推薦
Telematics and eCall Audio
In telematics control units, the TAS6754QDKQRQ1 provides hands-free audio amplification for emergency calls and voice prompts. Its high PSRR and low EMI Class-D output help pass automotive EMC tests. The 4-channel capability allows front/rear speaker zones and a dedicated chime channel. Use the current-sense outputs to implement speaker diagnostics required for eCall self-test.
推薦
Rear-Seat Entertainment
For rear-seat displays and headrest monitors, the TAS6754QDKQRQ1 delivers multi-channel audio from a digital source such as a SoC or HDMI audio extractor. The 19V rail can be generated from a USB-PD or automotive buck-boost. 1L modulation reduces the number of inductors, saving PCB area inside slim seatback housings. AC load diagnostics help detect damaged speaker jacks.
推薦
Heavy-Duty Commercial Vehicle Audio
Trucks and construction vehicles use 12V/24V electrical systems, but audio amplifiers often run from a regulated 19V rail. The TAS6754QDKQRQ1 accepts a digital audio bus from an RDS tuner or telematics gateway and drives 4 speakers in the cabin. Its real-time load diagnostics are useful for fleet maintenance, detecting open or shorted speakers without extra wiring. A wide-temperature version supports under-dash mounting.
推薦
推薦產品摘要
工程參考資料，適用於 TAS6754QDKQRQ1 — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | TAS6424QDKQRQ1 | TAS6424EQDKQRQ1 | TAS6584QDKQRQ1 | TAS6422QDKQRQ1 |
|---|---|---|---|---|---|
| Package | 56-HSSOP (DKQ) | 56-HSSOP (DKQ) | 56-HSSOP (DKQ) | 56-HSSOP (DKQ) | 56-HSSOP (DKQ) |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Number of Channels | 4 | 4 | 4 | 4 | 2 |
| Switching Frequency | 2 MHz | 2 MHz | 2 MHz | 2 MHz | 2 MHz |
| AEC-Q100 | Qualified | Qualified | Qualified | Qualified | Qualified |
| Input Type | Digital | Digital | Digital | Digital | Digital |
主要差異化特點
- 1L modulation reduces inductor count (對比Traditional Class-D amplifiers)
- Integrated current sense and real-time load diagnostics (對比TAS6424QDKQRQ1)
- 4-channel capability (對比TAS6422QDKQRQ1)
設計說明
Place the output LC filter as close as possible to the TAS6754QDKQRQ1 outputs. The 2MHz switching frequency means the filter components should have low ESL/ESR and short traces. A solid ground plane under the amplifier and filter is essential to minimize loop inductance and reduce EMI. Route the digital audio input away from the output stage to avoid coupling.
The exposed thermal pad must be soldered to a copper area of at least 1 square inch on the PCB. With a 19V supply and Class-D efficiency around 85-90%, the dissipated power at 4 channels can still be significant. Add vias under the thermal pad to the inner ground planes. If the design drives continuous high power, consider additional copper in the enclosure for heat spreading.
The 2MHz switching edges generate broadband EMI. Use a properly damped output filter with ferrite beads if needed, and keep the filter ground return short. Follow TI's EVM layout guidelines for the TAS6754-Q1 to pass automotive CISPR 25 requirements. Adding a small RC snubber across the output nodes can reduce ringing without sacrificing audio performance.
合規資訊
AEC-Q100 qualified per Q1 suffix in part number. RoHS/REACH status not stated in verified web data as of 2026-08-28.
