IRS20957SPBF - 100V Protected Class-D Audio Driver | Infineon
料号： IRS20957SPBF ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
IRS20957SPBF 概述
What is a protected digital audio driver? A Class-D audio driver is a gate-drive IC that accepts a PWM command and controls the switching MOSFETs in an audio half-bridge. The IRS20957SPBF provides the gate-drive and current-sense functions required around external power MOSFETs; it is not itself a full audio power amplifier. Its floating PWM input supports convenient half-bridge implementation, while the high-voltage output stage permits a Class-D amplifier topology using suitably rated external transistors.
Key features include 100 V MOSFET-driver capability, 1.0 A peak output current, and a 500 ns listed in distributor specifications. The floating PWM input simplifies control-signal interfacing. Bidirectional current sensing detects over-current conditions in positive and negative load-current directions without an external shunt resistor, helping simplify protection in bidirectional audio output stages. Programmable preset dead time can be adjusted for the external MOSFETs and system timing requirements.
The device is packaged as a 16-SOIC, narrow-body surface-mount component. Its protected-driver feature set is intended to support robust audio power-stage designs where output-current detection, fault response, and shutdown behavior are important. The half-bridge approach allows the external MOSFETs and speaker output network to be sized independently from the control and driver IC. Exact pin names, timing values, current-limit thresholds, and recommended external-component values should be taken from the Infineon datasheet.
Typical uses include mono Class-D speaker amplifiers, compact consumer-audio modules, powered speaker systems, USB or multimedia audio outputs, and industrial audio equipment. The driver can be paired with appropriately rated power MOSFETs, gate resistors, PWM sources, and output filtering. Design attention should focus on MOSFET voltage and current ratings, gate-drive timing, dead-time selection, current-sense thresholds, thermal behavior, and the floating-input common-mode arrangement.
For a robust implementation, verify all external MOSFETs against the 100 V driver capability and the intended amplifier voltage. Use the datasheet-recommended protection and shutdown network, provide adequate local decoupling, and route high-current gate and power paths separately from sensitive PWM and current-sense traces. This page consolidates verified manufacturer and distributor information while identifying unspecified parameters for engineer review.
This product data summarizes the verified source information, practical design guidance, and sourcing references. It is intended to support engineering selection, not to replace the complete Infineon datasheet for production design, qualification, or safety validation.
直接替换替代料： IRS20957SPBF ——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： IRS20957SPBF （相同外形与封装尺寸） ——差异在于 Over-Current Protection, Package, Product Type.
快速对比工具——选择替代料号进行并排对比：
IRS20957STRPBF
✅ 直接替换📋 参考替代料（不在目录中）
IRS20957SPBF
✅ 直接替换✓ 有现货
联系询价
查看数据手册 →IRS20957SPBF 最大额定值与电气特性
| Product Type | Protected digital audio MOSFET driver |
| Audio Amplifier Class | Class D |
| Speaker Channels | 1 channel |
| Audio Input Type | PWM |
| 输出类型 | 1-channel half-bridge driver |
| Maximum Output Voltage | 100 V |
| Output Current | 1.0 A |
| Response Time | 500 ns |
| Input Type | Floating PWM input |
| Current Sensing | Bidirectional over-current sensing without external shunt resistor |
| Over-Current Protection | Programmable with self-reset function |
| Dead Time | Programmable preset dead time |
| Shutdown | Shutdown function |
| 电源电压 | 10 V to 15 V |
| 封装 | 16-SOIC narrow package |
| Package Pin Count | 16 pins |
| 安装类型 | Surface mount |
| Manufacturer Description | High-voltage, high-speed MOSFET driver with floating PWM input for Class-D audio amplifier applications |
IRS20957SPBF 16 pins 引脚配置指南
IRS20957SPBF（16 pins 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： IRS20957SPBF.
请参阅 数据手册 以查看完整引脚配置。
典型应用
IRS20957SPBF 适用于 6 应用s: Mono Class-D Speaker Amplifier, Compact Powered Speaker Module, Multimedia Audio Output Stage, Industrial Audio Amplifier, Portable Speaker Amplifier, USB or Interface-Powered Audio.
Mono Class-D Speaker Amplifier
The IRS20957SPBF fits a one-channel Class-D speaker amplifier because it accepts a floating PWM input and drives a half-bridge power stage using external MOSFETs. Its 100 V driver capability and 1.0 A output-current specification provide a useful basis for compact speaker-drive designs, while programmable dead time supports controlled switching between the upper and lower devices. Use the manufacturer datasheet to set current sensing, protection, and shutdown behavior.
推荐
Compact Powered Speaker Module
For a compact powered speaker module, the IRS20957SPBF can provide the protected gate-drive control layer between a PWM audio signal and externally selected power MOSFETs. Bidirectional current sensing without an external shunt resistor can simplify the sensing arrangement, while the 16-SOIC package supports conventional surface-mount PCB assembly. Actual output power depends on the MOSFETs, supply rail, speaker impedance, and thermal design.
推荐
Multimedia Audio Output Stage
The IRS20957SPBF is suitable for a multimedia or powered-speaker output stage where a PWM signal drives a protected Class-D half-bridge. Its floating PWM input simplifies the interface concept, and programmable dead time helps align switching behavior with the selected external MOSFETs. The 10 V to 15 V supply range and 100 V driver rating should be reconciled with the amplifier's actual bus voltage and transient margin.
推荐
Industrial Audio Amplifier
The IRS20957SPBF can serve as the protected MOSFET-driver element in an industrial audio amplifier requiring a one-channel Class-D output. Bidirectional over-current detection and self-reset behavior are useful when the speaker load or external wiring can create abnormal current conditions. Qualification still requires checking electromagnetic behavior, temperature range, fault-state recovery, and the long-term availability of the selected external MOSFETs.
推荐
Portable Speaker Amplifier
In a portable speaker amplifier, the IRS20957SPBF provides a compact protected driver interface for a PWM-driven half-bridge. The floating PWM input helps accommodate a control-signal arrangement in a constrained board layout, while shutdown support can assist system power management. Designers must still manage battery-bus transients, conversion efficiency, speaker impedance, thermal rise, and the switching losses of the external MOSFET stage.
推荐
USB or Interface-Powered Audio
IRS20957SPBF can be used in an interface-powered audio module when the system provides a compliant Class-D power stage and suitable protection. The driver's one-channel architecture matches a mono speaker channel, while current sensing and shutdown functions help manage unexpected output conditions. Because the verified data does not identify companion MPNs or exact timing values, the complete interface and power-conversion circuit must be validated from the manufacturer datasheet.
推荐
工程参考数据： IRS20957SPBF ——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 | IRS20957STRPBF | IRS20957SPBF |
|---|---|---|---|
| Brand | Infineon Technologies | Infineon Technologies | Infineon Technologies |
| Package | SOIC-16 | SOIC-16 | SOIC-16 |
| Audio Channels | 1 channel | 1 channel | 1 channel |
| Audio Input Type | PWM | PWM | PWM |
关键差异点
- Protected Class-D driver positioning （对比 IRS20957STRPBF)
- Bidirectional current-sensing implementation （对比 IRS20957STRPBF)
- Floating PWM interface （对比 IRS20957SPBF)
设计说明
Select external power MOSFETs with voltage, current, gate-charge, and thermal ratings appropriate for the intended Class-D amplifier rail and speaker load. The verified IRS20957SPBF data identifies a 100 V driver rating, but that rating does not prove that every 100 V MOSFET is safe in the final application. Check bus transients, switching losses, body-diode behavior, and the complete power-stage SOA.
Keep the floating PWM and current-sense paths short and isolated from high-current gate-drive loops. Place recommended decoupling close to the supply pins, use low-independence gate-loop routing, and keep the external MOSFET switching node compact. Confirm pin assignments and layout recommendations in the official Infineon datasheet because the verified web snippets do not provide a complete pin map.
Do not treat the 1.0 A output-current value as speaker output power; IRS20957SPBF is a MOSFET driver and its current rating applies to the driver stage, while amplifier power depends on the external MOSFETs, supply rail, switching frequency, and load. Validate dead time, over-current thresholds, shutdown polarity, and fault recovery under worst-case speaker impedance and temperature.
合规信息
The supplied verified sources do not state RoHS, REACH, lead-free, halogen-free, conflict-minerals, or AEC-Q100 status. These fields remain unknown or not applicable rather than inferred from the manufacturer name or product category.
