IRS20955SPBF - 100V Protected Audio Driver | Infineon
料号： IRS20955SPBF ✗ 停产| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $4.1146 | $4.11 |
| 10 | $4.1146 | $41.15 |
| 100 | $4.1146 | $411.46 |
| 500 | $4.1146 | $2,057.30 |
| 1,000 | $4.1146 | $4,114.60 |
IRS20955SPBF 概述
A protected digital audio driver is a gate-driver IC that translates a PWM command into high- and low-side drive signals for power MOSFETs. In a Class D audio power stage, the driver sits between a controller and the MOSFET gates, helping establish the required high-side and low-side switching sequence. The IRS20955SPBF belongs to the audio-driver, power-management, and gate-driver hierarchy rather than being an audio signal amplifier itself.
The main verified features include a floating PWM input for half-bridge use, programmable bidirectional over-current protection with self-reset, programmable preset dead time, and high noise immunity. The distributor listing identifies the device as a two-channel audio line driver in a 16-SOIC package, while the component search result specifies 100 V, 1.2 A, two outputs, high/low-side half-bridge operation, and inverse/non-inverse drive options. These functions target compact, protected audio output stages where switching-node transients and component protection are important design concerns.
The device is intended for Class D audio amplifier applications in which the external power stage uses discrete MOSFETs. Exact switching timing, propagation delay, slew rate, input logic levels, current limits, thermal limits, and pin-level details must be confirmed against the manufacturer datasheet before layout or production use. The verified search data does not provide those values, so they are not inferred here. The available package designation is 16-SOIC, and the manufacturer data identifies a narrow package.
Typical application contexts include consumer audio amplifiers, powered speakers, compact Class D stereo systems, and industrial audio equipment. The driver handles the gate-drive sequencing requirement, while the external MOSFETs determine the usable output power. Designers should keep the high-voltage switching node and gate-drive traces compact, provide the required decoupling, and validate dead time against the selected MOSFETs to avoid shoot-through.
A key engineering consideration is that IRS20955SPBF is identified as obsolete or end-of-life in the supplied cross-reference result, so new production should confirm lifecycle status, availability, and approved sourcing before commitment. Existing equipment can still benefit from a carefully qualified replacement, but pinout, protection behavior, logic polarity, and timing must be compared rather than assumed.
This page consolidates the verified distributor identity, package information, protection features, sourcing links, and application engineering guidance. It is intended to accelerate component identification and design review, while clearly separating verified data from parameters that require confirmation in the manufacturer datasheet.
直接替换替代料： IRS20955SPBF ——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： IRS20955SPBF （相同外形与封装尺寸） ——差异在于 Manufacturer, Noise Immunity, Over-Current Protection, PWM Input, Package.
快速对比工具——选择替代料号进行并排对比：
DGD21042S8-13
✅ 直接替换📋 参考替代料（不在目录中）
DGD2104AS8-13
✅ 直接替换📋 参考替代料（不在目录中）
DGD2103MS8-13
✅ 直接替换📋 参考替代料（不在目录中）
DGD2184S8-13
✅ 直接替换📋 参考替代料（不在目录中）
IRS20955SPBF 最大额定值与电气特性
| Device Type | Protected digital audio driver |
| Manufacturer | Infineon Technologies |
| Channel Count | 2 channels |
| Output Count | 2 outputs |
| Voltage Rating | 100 V |
| Output Current | 1.2 A |
| PWM Input | Floating PWM input |
| Topology Support | Half-bridge high-side and low-side drive |
| Over-Current Protection | Programmable bidirectional over-current protection with self-reset |
| Dead Time | Programmable preset dead time |
| Noise Immunity | ±100 V ratings |
| Drive Polarity | Inverting/non-inverting |
| 封装 | 16-SOIC narrow package |
| 安装类型 | Surface mount |
| Application Category | Class D audio amplifier half-bridge applications |
| 生命周期状态 | Obsolete / EOL per supplied cross-reference result |
IRS20955SPBF 16-soic narrow package 引脚配置指南
IRS20955SPBF（16-soic narrow package 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： IRS20955SPBF.
请参阅 数据手册 以查看完整引脚配置。
典型应用
IRS20955SPBF 适用于 6 应用s: Class D Stereo Audio Amplifier, Powered Speaker Output Stage, Consumer Audio Power Module, Industrial Audio Amplifier, Audio Amplifier Protection and Fault Recovery, High-Voltage Half-Bridge Switching.
Class D Stereo Audio Amplifier
IRS20955SPBF fits a Class D stereo output stage because it is identified as a protected digital audio driver with two outputs, a floating PWM input, and programmable dead time. Place the driver between the audio controller and the external high-side and low-side MOSFETs in each half-bridge. The verified 100 V and 1.2 A specifications establish the device’s stated voltage and output-current class, while the MOSFET selection determines usable amplifier power. Dead time must be tuned to the MOSFETs to reduce shoot-through and distortion.
推荐
Powered Speaker Output Stage
For powered speakers, IRS20955SPBF can drive the external switching devices in a high-power audio half-bridge while providing programmable dead-time control and bidirectional over-current protection. The driver’s floating PWM input helps organize the control signal for a half-bridge arrangement. Protection must still be tuned to the speaker wiring, transformer or load behavior, and MOSFET ratings. Because the verified data does not specify thermal limits or maximum supply voltage, validate those values from the manufacturer datasheet before production release.
推荐
Consumer Audio Power Module
IRS20955SPBF is appropriate for a compact consumer-audio module where a protected digital driver drives discrete MOSFETs rather than an integrated audio amplifier. Its two-output architecture supports a half-bridge implementation, and the floating PWM input can simplify control routing. Keep the switching node and gate-drive loop physically compact to reduce EMI. Programmable dead time helps optimize THD, but the final setting must be verified with the selected MOSFETs and measured under load rather than copied blindly.
推荐
Industrial Audio Amplifier
In industrial audio equipment, IRS20955SPBF can support a protected Class D output stage where fault response and controlled switching are important. Its programmable bidirectional over-current protection and self-reset behavior can help manage abnormal load conditions, while preset dead time supports repeatable high-side and low-side sequencing. Industrial environments may require additional isolation, surge protection, thermal monitoring, or regulatory compliance beyond the driver itself. Those requirements are not specified in the supplied data and must be assessed separately.
推荐
Audio Amplifier Protection and Fault Recovery
IRS20955SPBF is useful when a Class D power stage needs integrated driver-level protection around the external MOSFET bridge. The verified feature list specifically identifies programmable bidirectional over-current protection with self-reset, allowing fault behavior to be adjusted rather than relying only on a fixed external trip. Protection thresholds must be coordinated with speaker DC resistance, transformer behavior, MOSFET current limits, and thermal conditions. The driver does not replace a correctly sized output filter, fuse, or system-level surge protection.
推荐
High-Voltage Half-Bridge Switching
IRS20955SPBF can be considered for a high-voltage half-bridge switching function when the external devices and PCB are designed for the stated 100 V class. The two outputs support complementary high-side and low-side drive, while the floating PWM input and programmable dead time help define switching behavior. High dv/dt switching nodes demand careful creepage, clearance, gate-loop layout, and return-path planning. The supplied data does not provide complete absolute-maximum, thermal, or timing tables, so those must be checked before applying the device beyond audio use.
推荐
推荐产品汇总
工程参考数据： IRS20955SPBF ——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 | DGD21042S8-13 | DGD2104AS8-13 | DGD2103MS8-13 | DGD2184S8-13 |
|---|---|---|---|---|---|
| Brand | Infineon Technologies | Diodes Incorporated | Diodes Incorporated | Diodes Incorporated | Diodes Incorporated |
| Package | 16-SOIC narrow package | 16-SOIC candidate; exact package details require verification | 16-SOIC candidate; exact package details require verification | 16-SOIC candidate; exact package details require verification | 16-SOIC candidate; exact package details require verification |
关键差异点
- Integrated protected digital audio-driver function （对比 DGD21042S8-13)
- Floating PWM input for half-bridge implementation （对比 DGD2104AS8-13)
- Programmable dead-time feature for THD control （对比 DGD2103MS8-13)
- Defined 100 V and 1.2 A device class （对比 DGD2184S8-13)
设计说明
Keep the high-side and low-side gate-drive loops short and compact, and route the power-switching current away from the driver’s signal ground. The verified IRS20955SPBF function is a protected audio driver, but the external MOSFETs determine the actual switching energy. Place required bypass components close to the device pins and use a deliberate return path so gate-drive current does not share the audio output-filter return. Confirm the exact pinout in the manufacturer datasheet before routing.
Do not select a replacement based only on the phrase “16-SOIC.” The supplied cross-reference candidates are not accompanied by verified pin maps, electrical limits, or timing data. A true drop-in replacement must match package dimensions, pin numbering, input polarity, supply requirements, output drive, dead-time behavior, and protection thresholds. If any of these differ, the candidate requires schematic and PCB review rather than a simple component substitution.
Program the dead-time setting only after measuring the external MOSFET gate waveforms. The verified feature list states that IRS20955SPBF provides programmable preset dead time to improve THD, but too little dead time can cause shoot-through while excessive dead time increases distortion and reduces amplifier efficiency. Also verify the driver’s supply and output limits from the manufacturer datasheet because those values were not included in the supplied search data.
Thermal analysis must include the external MOSFETs, PCB copper, enclosure, and ambient conditions. The supplied results provide a 1.2 A output-current specification but no verified thermal resistance or power-dissipation table, so no numerical junction estimate is provided here. Validate the complete amplifier stage at worst-case load and fault conditions, and use the manufacturer’s absolute-maximum ratings as the controlling constraints.
A floating PWM input and a half-bridge output stage can create fast switching transitions and high common-mode dv/dt. Keep the switching node physically small, use a low-inductance power loop, and provide adequate input bypassing. Evaluate EMI with the actual MOSFETs, output filter, cable length, and enclosure because those variables materially affect radiated and conducted emissions. The verified ±100 V noise-immunity rating does not replace an EMI validation plan.
合规信息
The supplied data does not state RoHS, REACH, lead-free, halogen-free, conflict-minerals, or automotive-qualification status. The supplied cross-reference result identifies the part as obsolete/EOL, so current manufacturer documentation should be obtained before regulated production use.
