參數(shù)資料
型號(hào)： IRAUDAMP5
廠商： International Rectifier
英文描述： 120W x 2 Channel Class D Audio Power Amplifier Using the IRS2092S and IRF6645
中文描述： 120瓦× 2通道D類音頻功率放大器使用IRS2092S和IRF6645
文件頁(yè)數(shù)： 20/49頁(yè)
文件大?。?/td> 1416K
代理商： IRAUDAMP5
Click-Noise Reduction Circuit (Solid-State Shunt)
IRS2092S controller is relatively quiet with respect to class AB, but for additional click or POP
noise reduction you may add a shunt circuit that further attenuates click or pop transients during
turn on sequencing. The circuit is not populated on the present demo board; for implementation
details, please refer to the IRAUDAMP4 user’s manual at http://www.irf.com/technical-
info/refdesigns/audiokits.html
Startup and Shutdown Sequencing (
Fig 22
)
The IRAUDAMP5 sequencing is achieved through the charging and discharging of the CStart
capacitor C117. Along with the charging and discharging of the CSD voltage (C10 on daughter
board for CH1) of the IRS2092S, this is all that is required for complete sequencing. The startup
and shutdown timing diagrams are show in Figure 22A below:
Click Noise Reduction Sequencing at Trip and Reset
Fig 22A
CStart
CSD
External trip
CSD= 2/3VDD
CStart Ref1
CStart Ref2
SP MUTE
CHx_O
Audio MUTE
Class D shutdown
Time
Music shutdown
Class D startup
CStart Ref1
CStart Ref2
Reset
Music startup
For startup sequencing, the control power supplies start up at different intervals depending on the
±B supplies. As the +/-B supplies reach +5 volts and -5 volts respectively, the +/-5V control
supplies for the analog input start charging. Once +B reaches ~16V, VCC charges. Once –B
reaches -20V, the UVP is released and CSD and CStart (C117) start charging. The Class D
amplifier is now operational, but the preamp output remains muted until CStart reaches Ref2. At
this point, normal operation begins. The entire process takes less than three seconds.
www.irf.com
Page 19 of 49
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IRAUDAMP6 制造商:International Rectifier 功能描述:AUDIO REFERENCE DESIGN KIT FEATURING IRS20957 - Boxed Product (Development Kits) 制造商:International Rectifier 功能描述:BOARD EVAL FOR IRS20957S
IRAUDAMP7D 功能描述:放大器 IC 開(kāi)發(fā)工具 25W - 500W Scalable IRS2092 2-Ch BRD RoHS:否 制造商:International Rectifier 產(chǎn)品:Demonstration Boards 類型:Power Amplifiers 工具用于評(píng)估:IR4302 工作電源電壓:13 V to 23 V
IRAUDAMP7S 功能描述:放大器 IC 開(kāi)發(fā)工具 25W - 500W Scalable IRS2092 Half BRG BRD RoHS:否 制造商:International Rectifier 產(chǎn)品:Demonstration Boards 類型:Power Amplifiers 工具用于評(píng)估:IR4302 工作電源電壓:13 V to 23 V
IRAUDAMP8 功能描述:放大器 IC 開(kāi)發(fā)工具 120W x 4 Ch Class D IRS2053M IRF665 BRD RoHS:否 制造商:International Rectifier 產(chǎn)品:Demonstration Boards 類型:Power Amplifiers 工具用于評(píng)估:IR4302 工作電源電壓:13 V to 23 V
IRAUDAMP9 功能描述:音頻 IC 開(kāi)發(fā)工具 1.7kW 2ohm Class-D IRS2092 IRFB4227 BRD RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Kits 類型:Audio Amplifiers 工具用于評(píng)估:TAS5614L 工作電源電壓:12 V to 38 V
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