IRS20124SPBF - 200V 1.2A Class-D Audio Driver | Infineon
料号： IRS20124SPBF ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $4.89 | $4.89 |
| 10 | $4.43 | $44.30 |
| 100 | $3.92 | $392.00 |
| 500 | $3.51 | $1,755.00 |
| 1,000 | $3.14 | $3,140.00 |
IRS20124SPBF 概述
A power MOSFET driver is an interface IC that translates low-power control signals into high-current gate-drive pulses for external switching transistors. Within the hierarchy of semiconductor solutions, IRS20124SPBF belongs to the gate-driver family, the power-MOSFET-driver subcategory of power management ICs, and the broader discrete-semiconductor interface category. Its purpose is to improve switching control while keeping the high-voltage and high-current switching stage physically separate from the controller.
The device provides integrated dead-time generation and bidirectional over-current sensing to simplify Class-D output-stage design. Its 60 ns propagation delay supports rapid switching, while the 200 V high-side rating permits higher bus voltages than conventional low-voltage audio drivers. The 14-pin SOIC-14 package offers gull-wing leads and is suitable for conventional surface-mount assembly.
Technically, the driver uses separate high-side and low-side outputs to operate the external MOSFETs in a half bridge. Integrated dead-time prevents both devices from conducting simultaneously, while over-current detection can support protection of the power stage. The verified distributor data identifies the part as a one-channel, 14-SOIC audio driver and classifies it under gate drivers or audio special-purpose ICs.
Typical applications include Class-D stereo amplifiers, compact consumer loudspeaker systems, powered speakers, and automotive-style high-voltage audio stages. In a half-bridge topology, IRS20124SPBF drives two external MOSFETs from a modulation controller, reducing controller-side gate-current burden and helping achieve clean, efficient power amplification.
The main design consideration is ensuring adequate gate-drive voltage, dead time, and fault-response behavior for the selected MOSFETs. The 10 V to 18 V supply requirement, 200 V voltage rating, 1.2 A output current, and integrated protection functions should be checked against the amplifier’s bus voltage, switching frequency, power-stage layout, and thermal conditions before production release.
直接替换替代料： IRS20124SPBF ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
快速对比工具——选择替代料号进行并排对比：
IRS20124STRPBF
✅ 直接替换📋 参考替代料（不在目录中）
IRS20124SPBF
✅ 直接替换✓ 有现货
$3.14 / 个
查看数据手册 →IRS20124SPBF 最大额定值与电气特性
| Product Type | Digital Audio Driver with Discrete Dead-Time and Protection |
| Driver Configuration | 1 channel, high-side and low-side |
| High-Side Voltage Rating | 200 V |
| Supply Voltage Range | 10 V to 18 V |
| Output Current | 1.2 A |
| Propagation Delay | 60 ns |
| Dead-Time Control | Internal, discrete dead-time |
| Over-Current Protection | Bi-directional over-current sensing |
| Output Stage | External N-channel power MOSFET half bridge |
| Application Category | Class-D audio amplifier |
| Maximum Output Power Capability | Up to 1000 W in Class-D applications |
| 封装 | 14-SOIC, 3.90 mm body width |
| Terminal Count | 14 terminals |
| Lead Form | Gull wing |
| Package Shape | Rectangular |
| 安装类型 | Surface mount |
| Temperature Grade | Automotive |
IRS20124SPBF rectangular 引脚配置指南
IRS20124SPBF（rectangular 封装）的引脚配置。 该功率器件具有栅极、漏极和源极端子。对于无极性封装，请参阅制造商数据手册以了解确切的引脚 1 方向和封装尺寸细节。常见应用包括电源设计、电机驱动和负载开关。
暂无详细引脚数据： IRS20124SPBF.
请参阅 数据手册 以查看完整引脚配置。
典型应用
IRS20124SPBF 适用于 6 应用s: Class-D Stereo Power Amplifier, Powered Speaker Amplifier, Automotive Audio Amplifier, Digital Audio Power-Stage Controller Interface, High-Voltage Consumer Audio Amplifier, Outdoor and Installation Speaker System.
Class-D Stereo Power Amplifier
IRS20124SPBF fits a full-bridge stereo output stage because it can drive one high-side and one low-side external N-channel MOSFET per half-bridge. Its 200 V high-side rating accommodates elevated speaker-amplifier bus voltages, while the 1.2 A output capability provides the gate-current drive needed for discrete power transistors. The 60 ns propagation delay supports fast switching, and integrated dead-time generation helps prevent shoot-through. The designer must still verify MOSFET loss, transformer or speaker loading, thermal margin, and fault behavior at the actual output power.
推荐
Powered Speaker Amplifier
In a compact powered speaker, IRS20124SPBF can translate a low-power audio modulation signal into strong high- and low-side gate pulses for the output MOSFET bridge. The 14-SOIC package simplifies conventional surface-mount assembly, while internal dead-time generation and bi-directional over-current sensing reduce the control circuitry required around the switching stage. Its 200 V rating is useful for transformer-isolated or bus-elevated designs, although continuous power still depends on the external MOSFETs, magnetics, heat sinking, and filter design.
推荐
Automotive Audio Amplifier
IRS20124SPBF is applicable to high-voltage automotive audio systems where a discrete Class-D output bridge is preferred for power-density control. The verified part metadata identifies an automotive temperature grade and gull-wing 14-terminal package, and the driver supports a 200 V high-side voltage environment. System designers should confirm the exact automotive qualification status and production requirements because the supplied snippets do not state AEC-Q100 qualification explicitly. Gate-drive efficiency and fault-response behavior remain critical under vibration, temperature, and load-transient conditions.
推荐
Digital Audio Power-Stage Controller Interface
IRS20124SPBF can isolate a digital or analog modulation controller from a discrete switching bridge by providing separate high-side and low-side gate-drive outputs. This arrangement lets the controller retain low-voltage signal integrity while the external MOSFETs handle speaker power. Internal discrete dead-time generation improves command handling, while over-current sensing supports protection feedback. Layout should isolate the switching node from the modulator and use the shortest practical high-current gate-drive loops to limit switching losses and voltage spikes.
推荐
High-Voltage Consumer Audio Amplifier
IRS20124SPBF is appropriate for consumer audio products requiring a discrete Class-D output stage and greater voltage headroom than low-voltage integrated amplifiers. The 200 V rating supports elevated bus architectures, while the 1.2 A driver output and 60 ns delay target fast discrete-MOSFET switching. Internal dead-time and bi-directional over-current sensing simplify protection implementation. Designers must qualify the external MOSFETs for the rail voltage, derive thermal limits from amplifier dissipation, and verify electromagnetic-emissions behavior around the high dv/dt switching node.
推荐
Outdoor and Installation Speaker System
IRS20124SPBF can be used in an installation speaker amplifier that must deliver high peak audio power from a remote power supply. The external-MOSFET architecture provides flexibility in output-device selection, and the 200 V high-side rating provides useful voltage-range flexibility. Integrated over-current sensing helps identify abnormal power-stage conditions, while dead-time generation supports robust half-bridge operation. The enclosure and board must address condensation, temperature rise, surge exposure, creepage, and the high-current output-filter path.
推荐
推荐产品汇总
工程参考数据： IRS20124SPBF ——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 | IRS20124STRPBF | IRS20124SPBF |
|---|---|---|---|
| Package | 14-SOIC | 14-SOIC | 14-SOIC |
| Brand | Infineon | Infineon | Infineon |
| High-Side Voltage Rating | 200 V | 200 V | 200 V |
| Supply Voltage Range | 10 V to 18 V | 10 V to 18 V | 10 V to 18 V |
| Output Current | 1.2 A | 1.2 A | 1.2 A |
| Propagation Delay | 60 ns | 60 ns | 60 ns |
| Dead-Time Control | Internal, discrete dead-time | Internal, discrete dead-time | Internal, discrete dead-time |
| Over-Current Sensing | Bi-directional | Bi-directional | Bi-directional |
| Class-D Maximum Output Capability | Up to 1000 W | Up to 1000 W | Up to 1000 W |
关键差异点
- Verified high-voltage replacement pathway （对比 IRS20124STRPBF)
- Integrated half-bridge protection functions （对比 Generic low-voltage gate drivers)
- High-side voltage headroom for Class-D systems （对比 Low-voltage consumer audio drivers)
设计说明
Route high-side and low-side gate-drive loops as short and symmetrical as practical because gate inductance contributes to switching loss and can alter dead-time behavior. Keep the power-switching node copper compact and route it away from the IRS20124SPBF input and supply-reference paths. Use a dedicated ground-return strategy for gate current so output-current transients do not modulate the modulator reference. Confirm land pattern, lead pitch, and soldering profile against the 14-SOIC package drawing before layout release.
Select external N-channel MOSFETs using the actual 200 V-class bus environment, expected overshoot, switching frequency, gate charge, and thermal resistance; the driver’s 1.2 A output rating does not remove the need for adequate peak gate current. The 10 V to 18 V supply range must remain within limits across tolerance, ripple, and startup. Add local supply bypassing close to the driver, and use gate resistors or other damping selected through oscilloscope testing to control edge rates, ringing, EMI, and simultaneous-switching stress.
Do not treat the integrated dead-time and over-current features as complete amplifier protection. Verify minimum and maximum dead time with the exact power MOSFETs, test both over-current-polarity paths, and confirm how fault status reaches the system controller. Also distinguish the 200 V high-side rating from the 10 V to 18 V driver supply: applying the audio bus directly to the supply pins is incorrect. Review absolute maximum ratings, startup sequencing, shutdown behavior, and output-filter stress using the governing manufacturer datasheet.
The IRS20124SPBF is normally a smaller loss contributor than the external Class-D MOSFETs, but its package still requires normal copper-area and thermal-path design. Estimate driver dissipation from gate-drive charge, supply voltage, repetition rate, and switching transitions, then add driver loss to the amplifier’s total thermal budget. Check the SOIC package under maximum ambient temperature and worst-case supply conditions. If the device shares a crowded analog or controller area, provide thermal vias where appropriate without compromising isolation or the high-voltage layout.
合规信息
The supplied data identifies an automotive temperature grade but does not explicitly state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. These fields remain unknown rather than inferred.
