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參數(shù)資料
| 型號： | IRAUDAMP1 |
| 廠商： | International Rectifier |
| 英文描述： | High Power Class D Audio Power Amplifier using IR2011S |
| 中文描述： | 高功率D類音頻功率放大器使用IR2011S |
| 文件頁數(shù)： | 10/22頁 |
| 文件大?。?/td> | 3219K |
| 代理商： | IRAUDAMP1 |
Over Voltage Protection
Over Voltage Protection shuts down the amplifier if the bus voltage between –Vcc and +Vcc
exceeds 126V, the threshold is determined by the sum of the zener voltages of Z1, Z2, and Z3.
OVP protects the board from the bus pumping phenomena which occurs at very low audio signal
frequencies by shutting down the amplifier.
Power On/Off Sequence Timing
The IRAUDAMP1 is a robust design that can handle any power up/down sequence. However,
symmetrical power up is recommended to properly initiate the self oscillation. In order for the unit
to startup correctly, the negative power supply has to be initialized from zero volts.
Fig.5 shows a preferred power up sequence. At start-up, a DC output voltage appears at the
output of the LPF due to the charging of the bootstrap capacitors. To avoid this unwanted DC
output signal being to fed to the load, the output relay RLY1 engages approximately 2 seconds
after the startup condition is completed. Fig 6 below shows the start-up timing with the audio
output not being activated until approximately 2 seconds after the power supplies are stable and
the amplifier has reached steady state operation.
Fig.5 Start-up Timing
(BLU: Switching, RED: Audio Output)
www.irf.com
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相關代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| IRAUDAMP10 | 功能描述:放大器 IC 開發(fā)工具 Two Channel 300W IRS2052M IRF6775 BRD RoHS:否 制造商:International Rectifier 產(chǎn)品:Demonstration Boards 類型:Power Amplifiers 工具用于評估:IR4302 工作電源電壓:13 V to 23 V |
| IRAUDAMP11 | 功能描述:放大器 IC 開發(fā)工具 120W x 3 Ch Class D IRS2053 IRF6665 BRD RoHS:否 制造商:International Rectifier 產(chǎn)品:Demonstration Boards 類型:Power Amplifiers 工具用于評估:IR4302 工作電源電壓:13 V to 23 V |
| IRAUDAMP12 | 功能描述:放大器 IC 開發(fā)工具 Two Channel 130W IR4301 40 Ohm BRD RoHS:否 制造商:International Rectifier 產(chǎn)品:Demonstration Boards 類型:Power Amplifiers 工具用于評估:IR4302 工作電源電壓:13 V to 23 V |
| IRAUDAMP15 | 功能描述:放大器 IC 開發(fā)工具 Two Channel 35W IR4311 40 Ohm BRD RoHS:否 制造商:International Rectifier 產(chǎn)品:Demonstration Boards 類型:Power Amplifiers 工具用于評估:IR4302 工作電源電壓:13 V to 23 V |
| IRAUDAMP16 | 功能描述:放大器 IC 開發(fā)工具 2-Ch 70W 4 Ohm REF Design IR4302 RoHS:否 制造商:International Rectifier 產(chǎn)品:Demonstration Boards 類型:Power Amplifiers 工具用于評估:IR4302 工作電源電壓:13 V to 23 V |
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