STA515WJ13TR - 40V 3A Quad Half-Bridge Class-D Audio Amp | ST
MPN： STA515WJ13TR ✓ 啟用中STA515WJ13TR 概覽
A power half-bridge is a switching power stage that drives a speaker load between one supply rail and ground, or in bridged (BTL) configuration between the two outputs of two half-bridges. A Class-D audio amplifier is a power amplifier whose output transistors operate in saturation rather than in their linear region, which converts the audio signal into a high-frequency pulse-width-modulated waveform and back into a smooth analog voltage through an output LC filter. The hierarchy runs Class-D audio amplifier to power half-bridge to amplifier IC to integrated circuit, and the STA515WJ13TR sits at the multi-channel end of that chain where four such stages are consolidated on one die.
Key characteristics include four independent half-bridge outputs, a maximum supply voltage of 40 V, a maximum output current rating of 3 A, an open-drain THWARN thermal-warning output that asserts low once the IC temperature exceeds 130 degrees Celsius ahead of thermal shutdown, and an open-drain FAULT output that reports internal fault conditions. On a detected fault the internal fault signal immediately disables the output power MOSFETs and places both H-bridges in a high-impedance state, protecting the loudspeakers and the external power stage from sustained DC.
Because four channels share one package, the thermal design of the board dominates the layout effort. Dissipated heat must leave through the exposed pad, so the pad needs a full copper pour with dense thermal vias, and the supply decoupling network must serve four output stages drawing from the same 40 V rail. Output filters are not integrated, so each channel requires its own LC filter sized to the switching frequency and the speaker impedance.
Typical applications include multi-way hi-fi and home cinema speaker crossovers, active subwoofer amplifiers, Bluetooth and wireless speaker systems, soundbar front-ends, and compact automotive or industrial audio modules where a single IC replaces four separate bridge amplifiers and saves board area, heat-sink surface and system cost.
When designing around this device, treat the exposed pad and via array as the primary thermal path, keep the input and supply routing compact, and verify that each LC output filter is rated for the full 3 A peak current and for the minimum speaker impedance you intend to drive. Confirm the FAULT and THWARN pins are monitored by the host controller so thermal derating is handled before shutdown occurs.
This page consolidates distributor availability, drop-in alternatives, a parameter-by-parameter comparison and practical thermal and layout guidance for the STA515WJ13TR into a single engineering reference that is not duplicated on the manufacturer datasheet alone.
直接替換替代品，適用於 STA515WJ13TR — 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。
STA515W13TR
✅ 直接替換聯絡詢價
查看資料表 →STA511
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
STA513
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
STA515WJ13TR 最大額定值與電氣特性
| Device Type | Quad power half-bridge Class-D audio amplifier |
| Total Output Channels | 4 half-bridge channels |
| Maximum Supply Voltage (VDD) | 40 V |
| 最大輸出電流 | 3 A |
| 輸出配置 | Mono / 2-channel stereo / 4-channel stereo (per distributor listing) |
| 封裝 | PowerSSO-36 EPD (PowerBFSOP, 0.295 in / 7.50 mm width) |
| Total Pin Count | 36 pins |
| 安裝類型 | Surface Mount |
| 工作溫度範圍 | 0 degrees C to 70 degrees C (TA) |
| Product Status | Active |
| THWARN Threshold | Asserts low when IC temperature exceeds 130 degrees C |
| THWARN Output Type | Open-drain MOSFET |
| FAULT Output Type | Open-drain MOSFET |
| Fault Response | Output power MOSFETs disabled, H-bridges forced to high-impedance |
| Output Filter | External LC filter required (not integrated) |
| 類別 | Integrated Circuits (ICs) / Amplifiers - Audio |
STA515WJ13TR powersso-36 epd (powerbfsop, 0.295 in / 7.50 mm width) 腳位配置指南
STA515WJ13TR（powersso-36 epd (powerbfsop, 0.295 in / 7.50 mm width) 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： STA515WJ13TR.
請參閱 資料表 以查看完整腳位配置。
典型應用
STA515WJ13TR 適用於 6 應用s: Multi-Way Hi-Fi Speaker Crossover, Home Cinema Multi-Channel Power Stage, Active Subwoofer and Bass Amplifier, Bluetooth and Wireless Speaker Systems, Soundbar and TV-Base Speaker Front-End, Automotive and Industrial Audio Modules.
Multi-Way Hi-Fi Speaker Crossover
The STA515WJ13TR fits a multi-way crossover because it places four half-bridge channels on one package, letting woofer, midrange, tweeter and passive-radiator sections share a single 40 V-class amplifier board. Each channel drives its own driver through a dedicated LC output filter, and the 3 A current rating per stage covers typical 4 ohm and 8 ohm passive crossover sections at moderate room-listening power. Consolidating four stages into one IC shrinks the amplifier board, reduces the number of heat-sink surfaces and simplifies the power supply, while the THWARN output lets the system back off output level before thermal shutdown.
推薦
Home Cinema Multi-Channel Power Stage
A home cinema power amplifier commonly needs five to seven channels, and the STA515WJ13TR provides four half-bridges per IC in a 36-pin PowerSSO-36 EPD package so two devices can cover a 5.1 or 7.1 arrangement with one channel spare. The 40 V maximum supply suits 24 V or 32 V amplifier bus rails, and the 3 A per-channel current limit suits 4 ohm and 6 ohm cinema and satellite speaker loads. The open-drain FAULT output gives the surround processor a direct health signal for muting and for logging failures in the listening zone.
推薦
Active Subwoofer and Bass Amplifier
In an active subwoofer or bass-amplifier module the STA515WJ13TR provides the power stage with four half-bridges that can be bridged into two high-output BTL channels, each driving a low-impedance woofer. The 3 A output current rating and 40 V supply ceiling give useful headroom for sealed and ported enclosures driven from a 24 V or 32 V rail, and the single exposed-pad package concentrates heat into one copper pour instead of spreading it across separate bridge chips. Use the THWARN pin to reduce bass boost before the thermal shutdown threshold is reached.
推薦
Bluetooth and Wireless Speaker Systems
Portable and networked speaker products use the STA515WJ13TR as the final power stage behind a wireless audio SoC, where four channels support a stereo pair plus passive radiator channels or a stereo plus surround configuration. Consolidating the amplification reduces the number of parts on a crowded internal board and simplifies the enclosure thermal design, which matters in compact plastic cabinets with limited airflow. The 0 to 70 degree Celsius ambient rating suits indoor living-room and desktop products, and the small exposed-pad footprint leaves room for the battery and radio sections.
推薦
Soundbar and TV-Base Speaker Front-End
A soundbar or TV speaker front-end typically needs several channels for left, right, centre and surround drivers, and the STA515WJ13TR handles four of them in a single 36-pin exposed-pad package that fits the slim internal layout of a bar-style enclosure. The amplifier is placed directly behind the driver breakout, and the 40 V supply ceiling allows operation from a compact boost-converter bus. Because heat dissipation is concentrated in one package, the soundbar chassis must provide copper area under the device and unobstructed venting along the amplification board.
推薦
Automotive and Industrial Audio Modules
Automotive infotainment and industrial audio modules use the STA515WJ13TR where several protected speaker outputs must be driven from a single 24 V vehicle or industrial bus, and the 40 V supply rating provides transient margin for line and load-dump conditions. Four half-bridge channels cover door, dash and rear-cabinet speakers while the open-drain FAULT and THWARN outputs let the body controller mute audio and report faults over the vehicle network. Check the 0 to 70 degree Celsius ambient range against the target enclosure, and use the manufacturer thermal data to confirm the exposed-pad copper area for high-temperature operation.
推薦
推薦產品摘要
工程參考資料，適用於 STA515WJ13TR — 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 | STA515W13TR | STA511 | STA513 |
|---|---|---|---|---|
| Package | PowerSSO-36 EPD | PowerSSO-36 EPD | PowerSSO-36 EPD | PowerSSO-36 EPD |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Device Type | Quad power half-bridge Class-D amplifier | Quad power half-bridge Class-D amplifier | Quad power half-bridge Class-D amplifier | Quad power half-bridge Class-D amplifier |
| Total Channels | 4 half-bridge channels | 4 half-bridge channels | 4 half-bridge channels | 4 half-bridge channels |
主要差異化特點
- Four half-bridge channels integrated in one exposed-pad package (對比STA515W13TR)
- Complete on-chip fault handling that protects the speaker load (對比STA511)
- High-voltage headroom on the supply rail (對比STA513)
設計說明
Estimated: with four channels sharing one exposed pad, the junction-to-ambient path is the pad copper and its via array, not the leads. Reserve a continuous pour under the whole package with a dense via field into the inner layers, and keep the output filter inductors and their copper away from the pad area. Monitor THWARN in firmware and step the gain down when it asserts, because the 130 degrees C warning arrives before the internal thermal shutdown and gives the system a chance to protect itself.
Decouple the 40 V supply rail locally at the device with bulk ceramic plus electrolytic capacitance sized for the sum of the four output stages, and route the supply and ground returns through the exposed pad via array rather than through the narrow signal pins. Each channel needs its own LC output filter; size the inductors for the continuous current and the capacitors for the speaker impedance, and keep the filter components away from the input and feedback traces so switching ripple is not injected back into the modulator.
Do not assume the chip can drive 4 ohm or 2 ohm loads directly at full power, and do not leave the FAULT and THWARN pins unconnected: both are open-drain outputs that need a pull-up to the host logic rail, and the host must mute the system when FAULT asserts because the internal fault logic places the H-bridges in a high-impedance state. Also remember that the 0 to 70 degrees C ambient range is a consumer-grade rating, so sealed hot enclosures need the thermal margin verified before release.
Keep the amplifier input and feedback routing short and symmetric between the four channels to minimise channel-to-channel gain and phase differences in a multi-way crossover. Separate the modulator reference and ground returns from the switching node paths, and avoid running output filter traces parallel to input traces. A common-mode choke or ferrite in the supply path of a multi-channel board is often more effective at reducing EMI than additional bulk capacitance alone.
合規資訊
The component is listed as active and in current production by the manufacturer. No RoHS, REACH or automotive qualification statement was identified for this ordering code, so those fields remain unknown. The 0 to 70 degrees C ambient rating and the consumer-oriented ordering code indicate a non-automotive grade part.
