SI8244CB-D-IS1R - 2-Channel 4A Audio Driver | Skyworks (Tape & Reel)
MPN： SI8244CB-D-IS1R ✓ 啟用中SI8244CB-D-IS1R 概覽
What is an isolated audio gate driver? An isolated audio gate driver is a specialized interface and power-management IC that transfers gate-control signals while providing galvanic isolation between control circuitry and a power stage. It belongs to the gate-driver family within the broader Class D audio-driver hierarchy, combining signal conditioning, level translation, isolation, and high-current output drive in one package.
The SI824x family is designed to support high-fidelity Class D amplification, with the SI8244 variant providing 4.0 A peak output current for driving external MOSFET gate networks. The available data identifies a 2-channel configuration, 2.5 kV isolation capability, and operation with a maximum 24 V supply. The Skyworks product page specifically highlights precise dead-time adjustment as a way to balance total harmonic distortion and system efficiency.
Typical applications include high-power stereo audio amplifiers, subwoofer amplifiers, professional audio equipment, home-theater systems, and other isolated gate-drive circuits. Isolation can help reduce ground-reference problems when the audio power stage and control electronics operate at different potentials. The two-channel structure also allows one driver IC to support complementary or multi-channel Class D output stages.
Designers should verify the exact input logic levels, propagation delay, quiescent current, enable behavior, isolation ratings, and external MOSFET requirements against the manufacturer datasheet before production. Gate traces must be short and properly terminated, and the power-stage layout must minimize loop area to preserve switching performance and reliability.
直接替換替代品，適用於 SI8244CB-D-IS1R — 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： SI8244CB-D-IS1R （相同外形與佔位） — 差異在於 Package, Product Type.
SI8244CB-C-IS1
✅ 直接替換聯絡詢價
查看資料表 →SI8244CB-IS1
✅ 直接替換📋 參考替代品（不在目錄中）
SI8241AB-D-IS1
✅ 直接替換📋 參考替代品（不在目錄中）
SI8244CB-D-IS1R 規格
| Product Type | Dual-channel isolated audio gate driver |
| Channel Count | 2 channels |
| Peak Output Current | 4 A |
| Maximum Supply Voltage | 24 V |
| Isolation Voltage | 2.5 kV |
| Power Class | Class D audio |
| Target Power | >30 W |
| 封裝 | 16-pin SOIC |
| 安裝類型 | Surface mount |
| Input/Output Isolation | Input-to-output and output-to-output isolation |
| Gate-Drive Function | High-side/low-side audio gate drive |
| Dead-Time Adjustment | Precise dead-time adjustment |
| Maximum Signal Rate | 25 ns |
| Common-Mode Rejection | 45 kV/us |
| Operating Supply Range | 4.5 V to 5.5 V |
| Automotive Listing | Automotive 16-pin SOIC listing |
SI8244CB-D-IS1R 16-pin soic 腳位配置指南
SI8244CB-D-IS1R（16-pin soic 封裝）的腳位配置。 腳位編號、功能與連接圖定義於製造商資料手冊中。請參閱該手冊以取得確切的封裝尺寸與焊接指引。
無詳細腳位定義資料： SI8244CB-D-IS1R.
請參閱 資料表 以查看完整腳位配置。
典型應用
SI8244CB-D-IS1R 適用於 6 應用s: High-Power Stereo Class D Amplifier, Subwoofer Power Amplifier, Home-Theater Multi-Channel Amplifier, Professional Audio Power Stage, Isolated Class D Audio Module, Automotive Audio Amplifier.
High-Power Stereo Class D Amplifier
The SI8244CB-D-IS1R fits a high-power stereo Class D amplifier because it provides two isolated driver channels with a verified 4 A peak output current. Each channel can interface with external switching MOSFETs, allowing the control circuitry and power stage to be referenced differently while preserving the required gate-drive signal. The isolated architecture can reduce ground-loop sensitivity in systems where the audio amplifier shares chassis or cable grounds with other equipment. Precise dead-time adjustment is valuable because it helps balance conduction loss, switching loss, and total harmonic distortion. The design must still verify MOSFET gate charge, switching frequency, and the current and voltage limits of the power stage.
推薦
Subwoofer Power Amplifier
The SI8244CB-D-IS1R is suitable for a subwoofer power stage when the design requires a 4 A peak gate-drive capability and isolated control signals. The dual-channel arrangement can drive the high-side and low-side devices associated with a full-bridge Class D topology, while the isolation barrier helps separate low-voltage command signals from the switching node. This is useful in powered subwoofers where the amplifier board shares a ground structure with enclosure, connectors, and protection circuits. Designers should account for MOSFET input capacitance and gate charge, because the 4 A rating is a peak output capability rather than a guarantee of continuous drive current. Dead time must be tuned to prevent cross-conduction without adding excessive distortion.
推薦
Home-Theater Multi-Channel Amplifier
In a home-theater amplifier, the SI8244CB-D-IS1R can provide isolated drive for multiple Class D output channels while keeping control and power-ground domains separate. The two-channel device is especially useful when a board uses paired high-side and low-side switching functions or drives two complementary amplifier sections. Its verified 4 A peak output current supports robust gate transitions for suitably selected external MOSFETs, while the isolation capability can improve system-level noise control. Layout quality remains decisive: high di/dt gate and switching-node currents must be contained in a compact loop, and analog input or control traces should remain away from switching nodes. The amplifier's THD target should be checked against the selected dead-time setting and MOSFET combination.
推薦
Professional Audio Power Stage
Professional audio equipment often combines isolated control, long interconnects, and substantial switching currents. The SI8244CB-D-IS1R addresses that environment with a dual-channel isolated driver, 2.5 kV isolation labeling, and a 4 A peak output current. Those characteristics can help isolate the control domain from a high-power audio stage and reduce sensitivity to ground differences between input, processing, and amplifier sections. The component is not an audio signal amplifier; it drives external power MOSFETs, so its performance depends on the selected transistors, gate resistors, dead-time network, and thermal design. Validate THD, slew behavior, and EMI under the worst-case speaker load before production release.
推薦
Isolated Class D Audio Module
The SI8244CB-D-IS1R is appropriate when an audio module must place its switching power stage behind an isolation barrier. The two isolated driver channels support independent gate-control functions while the 4 A peak drive capability provides the current needed for rapid MOSFET transitions. Isolation can be valuable in modular systems, test equipment, and industrial audio products where control and power grounds cannot be tied directly. The module still needs local supply decoupling, careful isolation-creepage review, and a defined safety strategy. Because the verified data does not specify every package-isolation dimension or timing parameter, use the manufacturer datasheet for layout spacing and production validation rather than relying on the distributor summaries.
推薦
Automotive Audio Amplifier
The SI8244CB-D-IS1R can be considered for automotive audio power-stage designs when the complete amplifier module satisfies the vehicle's electrical and environmental requirements. The device is listed in automotive-related distributor data as a 16-pin SOIC Class D audio gate driver, and its isolated dual-channel drive is compatible with systems that need ground-domain separation. However, the supplied data does not explicitly confirm AEC-Q100 qualification, automotive temperature range, transient immunity, or load-dump tolerance. Those requirements must be verified in the official datasheet and supplier documentation. If approved, the 4 A peak gate drive should be paired with automotive-rated MOSFETs and carefully controlled dead time to minimize switching noise and distortion.
推薦
推薦產品摘要
工程參考資料，適用於 SI8244CB-D-IS1R — 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 | SI8244CB-D-IS1RR | SI8244CB-C-IS1 | SI8244CB-IS1 | SI8241AB-D-IS1 |
|---|---|---|---|---|---|
| Brand | Skyworks Solutions, Inc. | Skyworks Solutions, Inc. | Skyworks Solutions, Inc. | Skyworks Solutions, Inc. | Skyworks Solutions, Inc. |
| Package | 16-pin SOIC | 16-pin SOIC | 16-pin SOIC family package | 16-pin SOIC family package | 16-pin SOIC family package |
| Channel Count | 2 channels | Related 2-channel family part; not independently verified | Related SI8244 family part; not independently verified | Related SI8244 family part; not independently verified | Related SI824x family part; not independently verified |
主要差異化特點
- Higher verified peak gate-drive current within the SI824x comparison set (對比SI8241AB-D-IS1)
- Dual-channel isolated Class D audio-driver positioning (對比SI8244CB-D-IS1RR)
- Precision dead-time adjustment for efficiency and THD balancing (對比Generic isolated gate-driver alternatives)
設計說明
The SI8244CB-D-IS1R has a verified 4 A peak gate-drive rating, but the external MOSFET determines the practical continuous drive demand. Calculate gate charge, switching frequency, and driver dissipation before selecting the power stage; do not treat the 4 A peak value as a continuous 4 A output capability. Provide local supply decoupling and verify the 24 V maximum supply rating under all startup, overshoot, and fault conditions.
Keep gate-drive traces short and route the high-dI/dt power loop as compactly as possible. Place input, supply, and gate-return connections to minimize parasitic inductance, and keep the isolated control-side traces away from switching-node copper. The dual-channel isolation structure should be laid out according to the manufacturer creepage and clearance guidance; distributor summaries do not provide the complete package-isolation dimensions.
Do not substitute SI8244CB-D-IS1R solely because another SI8244 suffix appears in search results. Verify the exact package, pin assignment, dead-time configuration, propagation timing, isolation rating, and gate-drive current. Also avoid assuming automotive qualification from an automotive-category listing: the supplied data does not confirm AEC-Q100 status or automotive temperature limits.
合規資訊
The supplied verified data includes distributor and manufacturer product information but does not explicitly provide RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals declarations. Automotive-related listings are not sufficient to establish AEC-Q100 qualification.