SI8244CB-D-IS1 - 2-Channel 4A Audio Driver | Skyworks
料号： SI8244CB-D-IS1 ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $1.4698 | $1.47 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
SI8244CB-D-IS1 概述
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.
直接替换替代料： SI8244CB-D-IS1 ——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： SI8244CB-D-IS1 （相同外形与封装尺寸） ——差异在于 Package, Product Type.
快速对比工具——选择替代料号进行并排对比：
SI8244CB-D-IS1R
✅ 直接替换📋 参考替代料（不在目录中）
SI8244CB-C-IS1
✅ 直接替换✓ 有现货
联系询价
查看数据手册 →SI8244CB-IS1
✅ 直接替换📋 参考替代料（不在目录中）
SI8241AB-D-IS1
✅ 直接替换📋 参考替代料（不在目录中）
SI8244CB-D-IS1 规格参数
| 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 |
| 封装 | 16-pin SOIC |
| 安装类型 | 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-IS1 16-pin soic 引脚配置指南
SI8244CB-D-IS1（16-pin soic 封装）的引脚配置。 引脚编号、功能和连接图在制造商数据手册中定义。请参阅该手册以了解确切的封装尺寸和焊接指南。
暂无详细引脚数据： SI8244CB-D-IS1.
请参阅 数据手册 以查看完整引脚配置。
典型应用
SI8244CB-D-IS1 适用于 6 应用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-IS1 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.
推荐
Subwoofer Power Amplifier
The SI8244CB-D-IS1 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.
推荐
Home-Theater Multi-Channel Amplifier
In a home-theater amplifier, the SI8244CB-D-IS1 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.
推荐
Professional Audio Power Stage
Professional audio equipment often combines isolated control, long interconnects, and substantial switching currents. The SI8244CB-D-IS1 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.
推荐
Isolated Class D Audio Module
The SI8244CB-D-IS1 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.
推荐
Automotive Audio Amplifier
The SI8244CB-D-IS1 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.
推荐
推荐产品汇总
工程参考数据： SI8244CB-D-IS1 ——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 | SI8244CB-D-IS1R | 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 |
关键差异点
- Higher verified peak gate-drive current within the SI824x comparison set （对比 SI8241AB-D-IS1)
- Dual-channel isolated Class D audio-driver positioning （对比 SI8244CB-D-IS1R)
- Precision dead-time adjustment for efficiency and THD balancing （对比 Generic isolated gate-driver alternatives)
设计说明
The SI8244CB-D-IS1 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-IS1 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.
合规信息
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.