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IR IR4301 130W 2路D类音频功率镌汰年夜器参考设计

宣布时间:2012年05月29日 12:05    宣布者:1770309616
要害词: D类 , IR , IR4301 , 功率镌汰年夜器 , 音频
IR公司的IR4301和R4311集成了PWM控制器和数字音频MOSFET,组成了高性能D类音频镌汰年夜器,具有岑岭值音乐功率输入,不须要机械的散热器,单电源或双电源使命,差分或单端输入,过流,超平和欠压掩护,并具复位功效,IR4301能向4欧姆输入160W功率,IR4311能向4欧姆输入35W功率,主要用在家庭影院系统,坞站音频系统,电子音乐,卡拉OK镌汰年夜器,游戏控制台,扬声器系统和通用音频功率镌汰年夜器.本文简介了IR4301和IR4311主要特点,方框图,多种毗连电路和应用电路,和接纳IR4301的130W/4Ω x 2路D类音频功率镌汰年夜器IRAUDAMP12参考设计主要特点,电路图,质料清单和PCB结构图.

The IR4301, IR4311 integrates PWM controller and digital audio MOSFETs forming a high performance Class D audio amplifier. As a result of fully optimized MOSFETs co-packed with a dedicated controller IC, the IR4301, IR4311 operates without mechanical heatsink attached in a typical music playback usage. High voltage ratings and noise immunity in the controller IC ensures reliable operation over various environmental conditions. A small 5x6 mm MLPQ package enhances the benefit of smaller size of Class D topology. The IR4301, IR4311 are a lead-free, ROHS compliant.

IR4301和IR4311主要特点:

 Integrated analog input Class D audio amplifier in a small 5 x 6 mm PQFN package

 High peak music power output

 No mechanical heatsink required

 Split or single power supply

 Differential or single-ended input

 Over-current, over-temperature and under voltage protections with self-reset function

 Start and stop click noise reduction

 High noise immunity

 RoHS compliant

IR4301和IR4311产物特点:

20120529105039718.gif

IR4301和R4311尺度应用:

 Home theatre systems

 Docking station audio systems

 PC audio systems

 Musical instruments

 Karaoke amplifiers

 Game consoles

 Powered speaker systems

 General purpose audio power amplifier
20120529105039728.gif
图1.IR4301和IR4311方框图
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图2.IR4301和IR4311反相镌汰年夜器毗连图
20120529105039618.gif
图3.IR4301和IR4311差分镌汰年夜器毗连图
20120529105039727.gif
图4.IR4301和IR4311单电源毗连图

接纳IR4301的130W/4Ω x 2路D类音频功率镌汰年夜器IRAUDAMP12参考设计

The IRAUDAMP12 reference design is a two-channel, 130W/ch (4Ω/±31V; no heatsink)/ 160W/ch (4Ω/±34V; *with heatsink) half-bridge Class D audio power amplifier. This reference design demonstrates how to use the IR4301 IC, implement protection circuits, and design an optimum PCB layout using PowIRaudio integrated Class D IC. This reference design does not require heatsink or fan cooling for normal operation (one-eighth of continuous rated power).The reference design provides all the required housekeeping power supplies for ease of use. The two-channel design is scalable for power and the number of channels.

20120529105040115.gif
图5.130W 2路D类音频功率镌汰年夜器IRAUDAMP12形状图

D类音频功率镌汰年夜器IRAUDAMP12主要特点:
2012052910504036.gif
D类音频功率镌汰年夜器IRAUDAMP12应用:

 AV receivers

 Home theater systems

 Mini component stereos

 Powered speakers

 Sub-woofers

 Musical Instrument amplifiers

 Car audio amplifiers
2012052910504020.gif
图6. D类音频功率镌汰年夜器子板电路图
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图7. D类音频功率镌汰年夜器主板电路图
20120529105040181.gif
图8. D类音频功率镌汰年夜器主板时钟和治理电路图
IRAUDAMP12 子板质料清单:
20120529105042554.gif
IRAUDAMP12 主板质料清单:
20120529105042129.gif
201205291050426.gif
20120529105043625.gif
20120529105043899.gif
图9.IRAUDAMP12子板PCB结构图:顶层
20120529105043385.gif
图10.IRAUDAMP12子板PCB结构图:底层
20120529105043593.gif
图11.IRAUDAMP12主板PCB结构图:顶层
20120529105047694.gif
图12.IRAUDAMP12主板PCB结构图:底层
概略请见:
ir4301.pdf (455.97 KB, 下载次数: 37)
iraudamp12.pdf (611.24 KB, 下载次数: 35)

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wbsh 揭晓于 2012-5-30 02:06:09
O(∩_∩)O谢谢
wbsh 揭晓于 2012-5-30 02:06:15
谢谢
wangsgw 揭晓于 2012-7-22 02:35:33
好质料顶一个
wangsgw 揭晓于 2012-7-22 02:37:24
不知在哪能买?
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