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參數(shù)資料
| 型號： | IRAUDAMP3 |
| 廠商： | International Rectifier |
| 英文描述： | 120W x 6 Channel Class D Audio Power Amplifier using IRS20124S and IRF6645 |
| 中文描述： | 120瓦× 6通道D類音頻功率放大器使用IRS20124S和IRF6645 |
| 文件頁數(shù)： | 11/40頁 |
| 文件大?。?/td> | 3335K |
| 代理商： | IRAUDAMP3 |
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10
Selectable Deadtime
The DT/SD pin provides two functions: 1) setting deadtime and 2) selecting shutdown.
The IRS20124S determines its operation mode based on the voltage applied to the
DT/SD pin. An internal comparator translates which mode is being used by comparing
internal reference voltages. Threshold voltages for each mode are set internally by a
resistive voltage divider off V
CC
, negating the need for a precise, absolute voltage to set
the mode.
1) Threshold voltages for the mode selection are set internally, based on different ratios
of V
CC
as indicated in the diagram below. In order to avoid drift from the input bias
current of the DT/SD pin, a bias current of greater than 0.5mA is suggested for the
external resistor divider circuit. Suggested values of resistance that are used to set a
deadtime are given below. Resistors with up to 5% tolerance can be used.
Deadtime / operation mode settings vs V
DT/SD
voltage
Dead-time mode
DT1
DT2
DT3
DT4
Dead-time
~15ns
~25ns
~35ns
~45ns
R1
R2
open
8.2k
4.7k
3.3k
DT/SD voltage
1.0 x
V
CC
0.71 x
V
CC
0.46 x
V
CC
0.29 x
V
CC
<10k
3.3k
5.6k
8.2k
Default
2) In Shutdown mode, both MOSFETs are turned off simultaneously to stop operation
and protect the circuit during fault conditions. If the DT/SD pin detects an input voltage
below the threshold, 0.23 x V
CC
, the IRS20124S will output 0V at both HO and LO
outputs, forcing the switching output node to go into a high impedance state.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| IRAUDAMP3-DB | 制造商:International Rectifier 功能描述:REFERENCE DESIGN COMPLETE 6-CHANNEL 120W HALF-BRIDGE CLASS D - Bulk |
| IRAUDAMP4 | 功能描述:KIT 2CH 120W HALF BRDG AUDIO AMP RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 過時/停產(chǎn)零件編號 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 傳感器類型:CMOS 成像，彩色（RGB） 傳感范圍:WVGA 接口:I²C 靈敏度:60 fps 電源電壓:5.7 V ~ 6.3 V 嵌入式:否 已供物品:成像器板 已用 IC / 零件:KAC-00401 相關(guān)產(chǎn)品:4H2099-ND - SENSOR IMAGE WVGA COLOR 48-PQFP4H2094-ND - SENSOR IMAGE WVGA MONO 48-PQFP |
| IRAUDAMP4A | 功能描述:放大器 IC 開發(fā)工具 120W x 2 Ch Class D IRS20957 IRF6645 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 |
| IRAUDAMP5 | 功能描述:放大器 IC 開發(fā)工具 120W x 2 Ch Class D IRS2092S IRF6645 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 |
| 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 |
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