TAS5612PHD - 125W Stereo Class D Amplifier | Texas Instruments
MPN： TAS5612PHD ✓ 啟用中TAS5612PHD 概覽
A Class D audio amplifier is a switching power amplifier whose transistor output stage operates with controlled PWM signals. Compared with a linear audio amplifier, this topology can convert amplifier input power into speaker output power more efficiently, reducing heat and allowing high output power in a compact package. The TAS5612PHD belongs to the broader hierarchy of audio amplifiers, audio power amplifiers, power management ICs, and semiconductors.
The primary performance ratings are 125 W stereo output, 250 W mono output, and operation from a 16 V to 34.1 V supply range. A 10.8 V to 13.2 V range is also associated with the device in the technical listing. Its integrated closed-loop feedback technology, called PurePath HD, helps the amplifier correct output-voltage distortion through the speaker connection rather than relying only on feedback around the power stage.
The device supports either one-channel mono operation or two-channel stereo operation. This flexibility makes it suitable for home-theater power stages, professional audio amplification, subwoofer amplifiers, and compact high-power speaker systems. The 64-pin HTQFP package requires a carefully designed exposed-pad thermal layout, and its power-class application makes heat dissipation a central PCB-design requirement.
For robust implementation, designers should follow the manufacturer datasheet for the recommended power topology, input filtering, speaker output network, supply decoupling, and thermal land pattern. The evaluation module TAS5612/14PHD2EVM provides a practical reference for evaluating TAS5612PHD alongside TAS5614PHD and TAS5518PAG in a PurePath HD audio system.
This page combines the manufacturer device ratings with practical guidance for thermal management, output-network implementation, supply decoupling, and device selection. It also distinguishes confirmed family alternatives from components that only provide related functionality but cannot be assumed to be pin-compatible replacements.
直接替換替代品，適用於 TAS5612PHD — 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。
TAS5612A
✅ 直接替換📋 參考替代品（不在目錄中）
TAS5611PHD
✅ 直接替換📋 參考替代品（不在目錄中）
TAS5613PHD
✅ 直接替換📋 參考替代品（不在目錄中）
TAS5614PHD
✅ 直接替換📋 參考替代品（不在目錄中）
TAS5612PHD 最大額定值與電氣特性
| Product Type | Class D audio power amplifier |
| Amplifier Architecture | PurePath HD integrated closed-loop feedback |
| Stereo Output Power | 125 W per channel |
| Mono Output Power | 250 W |
| Supported Channel Configurations | 1-channel mono or 2-channel stereo |
| Recommended Speaker Load | 4 ohm to 8 ohm |
| Power Supply Voltage Range | 16 V to 34.1 V |
| Additional Listed Voltage Range | 10.8 V to 13.2 V |
| Package Type | 64-pin HTQFP |
| Package Dimensions | 14 mm x 14 mm |
| 安裝類型 | Surface Mount |
| Device Description | PurePath HD digital-input power stage |
| Input Description | Analog-input Class D amplifier |
| Evaluation Module Support | TAS5612/14PHD2EVM |
TAS5612PHD 14 mm x 14 mm 腳位配置指南
TAS5612PHD（14 mm x 14 mm 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： TAS5612PHD.
請參閱 資料表 以查看完整腳位配置。
典型應用
TAS5612PHD 適用於 6 應用s: Home-Theater Stereo Power Amplifier, Subwoofer Mono Amplifier, Professional Audio Power Stage, Active Speaker Amplifier, Multi-Room Audio Amplifier, Audio Power-Supply Development Platform.
Home-Theater Stereo Power Amplifier
The TAS5612PHD fits a high-power stereo amplifier because it delivers up to 125 W per channel while driving 4 ohm to 8 ohm speakers. Place the power stage between the system audio signal and the loudspeaker outputs, using the manufacturer application circuit and recommended output network. Its Class D operating approach supports compact amplification, but a 14 mm by 14 mm HTQFP device still requires substantial copper area and controlled enclosure airflow. This choice is strongest when every stereo channel must handle roughly 125 W and the supply design can accommodate the listed 16 V to 34.1 V operating range.
推薦
Subwoofer Mono Amplifier
The TAS5612PHD can be configured for mono operation with a headline rating of 250 W, making it appropriate for a dedicated subwoofer power stage. Use the manufacturer configuration in which the amplifier drives one speaker load rather than two independent stereo channels. This arrangement allows the available output power to be concentrated in a single channel while retaining Class D conversion efficiency. The design must account for the 16 V to 34.1 V principal supply range, output-network values, speaker impedance, and continuous-load heating in the final enclosure.
推薦
Professional Audio Power Stage
The TAS5612PHD suits a professional speaker power stage requiring 125 W per channel and a 4 ohm to 8 ohm load range. Its PurePath HD closed-loop feedback architecture is designed to improve linearity by incorporating the speaker connection into the feedback path. The amplifier can therefore serve compact active speakers, monitor amplifiers, and powered speaker systems where output-stage efficiency is important. Production designs should reproduce the manufacturer power topology, filtering, grounding, decoupling, and thermal land pattern to maintain stable operation under sustained audio load.
推薦
Active Speaker Amplifier
The TAS5612PHD is appropriate for an active two-way speaker when its 125 W per-channel rating matches the required amplifier power. It can be used to drive low-impedance speaker sections while providing a more efficient alternative to a traditional linear output stage. The amplifier should be mounted on a thermal land pattern that supports heat transfer from the 64-pin HTQFP package. Designers should also follow the manufacturer input filtering and output-network guidance, since passive crossover components, speaker impedance, and wiring length can affect amplifier stability and real-world output capability.
推薦
Multi-Room Audio Amplifier
The TAS5612PHD can form the output section of a compact multi-room audio amplifier when each room drives 4 ohm or 8 ohm loads. Its two-channel capability supports stereo distribution, while its Class D efficiency reduces the heat generated relative to a linear amplifier of comparable output power. Because this is a high-output device, the system should provide separate supply regulation, adequate bulk and high-frequency decoupling, and a chassis layout that supports the exposed-pad thermal path. The 125 W rating should be checked against continuous program or RMS demand rather than short-duration peak level.
推薦
Audio Power-Supply Development Platform
The TAS5612/14PHD2EVM provides a practical platform for evaluating TAS5612PHD in a PurePath HD audio power stage. It demonstrates the device alongside TAS5614PHD and TAS5518PAG, allowing engineers to examine amplifier signal flow, power conversion, output filtering, and thermal implementation before creating production hardware. The evaluation result should be used to establish speaker-load behavior, supply requirements, protection performance, and enclosure heat dissipation. Final board designs should follow the current manufacturer layout and application guidance rather than treating an evaluation board as production-ready artwork.
推薦
推薦產品摘要
工程參考資料，適用於 TAS5612PHD — 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 | TAS5612A | TAS5611PHD | TAS5613PHD | TAS5614PHD |
|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Amplifier Class | Class D | Class D | Class D | Class D | Class D |
主要差異化特點
- Higher stereo output rating than the related TAS5611PHD (對比TAS5611PHD)
- Lower headline power than the TAS5614PHD option (對比TAS5614PHD)
- Direct family match with 125 W stereo and 250 W mono ratings (對比TAS5612A)
設計說明
Use the manufacturer exposed-pad layout and thermal land pattern to transfer heat from the 64-pin HTQFP package into the PCB. Keep the power stage near the power-supply connections and provide copper area on both sides of the board when the enclosure permits. At 125 W per channel, continuous output can create substantial heat even though Class D operation is efficient; validate the hottest operating condition with the intended load, supply, ambient temperature, and enclosure restrictions.
Place bulk and high-frequency decoupling capacitors close to the device power terminals, and route the high-current output and supply paths with copper widths sufficient for the load current. Keep the switching-output return path compact and isolate sensitive input routing from power-stage currents. Follow the manufacturer reference layout for the HTQFP pad pattern, exposed thermal pad, vias, output network, and input components rather than deriving these dimensions independently.
Do not treat a related TAS561x part as a guaranteed drop-in replacement without checking pin assignments, input architecture, control signals, supply limits, output filtering, and protection behavior. The TAS5614PHD carries a higher 150 W per-channel rating, while TAS5611PHD has different supply and load descriptions. Verify the exact manufacturer datasheet and perform amplifier testing with a representative speaker load before production use.
Confirm the supply voltage, output power, speaker impedance, and amplifier configuration before committing to a board revision. The TAS5612PHD headline ratings are 125 W stereo and 250 W mono, with a principal listed range of 16 V to 34.1 V. Account for regulator tolerance, transient headroom, startup behavior, and the distinction between test ratings and continuous power in a real enclosure.
合規資訊
The indexed manufacturer information does not explicitly state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status for this orderable device. The manufacturer datasheet notes that production processing does not necessarily include testing of all parameters and that devices have limited built-in ESD protection.
