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IR IR4302 100Wx2路D类音频功率镌汰年夜器处置赏罚赏罚妄图

宣布时间:2012年06月11日 12:06    宣布者:1770309616
要害词: IR , IR4302 , 镌汰年夜器 , 音频
IR公司的IR4302和IR4312集成了两路PWM控制器和数字音频MOSFET,组成高性能D类音频放器,其输入功率为100Wx2路(10%THD+N 4Ω 负载,带散热器),60Wx2路(10%THD+N 4Ω ,不带散热器),具有多种掩护功效如过流掩护(OCP),过压掩护(OVP),欠压掩护(UVP)和超温掩护(OTP),主要用于家庭影院,PC音频系统,卡拉OK镌汰年夜器,游戏控制器,扬声器系统和通用音频功率镌汰年夜器.本文简介了IR4302主要特点,功效方框图,尺度应用电路和接纳IR4302的100W / 4欧姆x 2路D类音频功率镌汰年夜看主要特点,电路图,质料清单和PCB结构图.

The IR4302, IR4312 integrates 2 channel 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 IR4302, IR4312 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 7x7 mm PQFN package enhances the benefit of smaller size of Class D topology. The IR4302, IR4312 are a lead-free, ROHS compliant.

IR4302主要特点:

 2 channel integrated analog input Class D audio amplifier in a small 7 x 7 mm PQFN44 package

 No mechanical heatsink required

 High peak music power output

 Split or single power supply

 Differential or single-ended input

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

 Start/stop click noise reduction

 Clip and Fault reporting outputs

 High noise immunity

 RoHS compliant

IR4302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 amplifiers
20120611111742885.gif
图1.IR4302功效方框图

20120611111742580.gif
图2.IR4302反相镌汰年夜器毗连图
20120611111742795.gif
图3.IR4302差分镌汰年夜器毗连图
20120611111742179.gif
图4.IR4302单电源毗连图(反相镌汰年夜器)

接纳IR4302的100W / 4欧姆x 2路D类音频功率镌汰年夜器
20120611111743420.gif
图5.100W / 4欧姆x 2路D类音频功率镌汰年夜器IRAUDAMP17形状图

The IRAUDAMP17 reference design is a two-channel, 100W/ch (4 Ω/52V Bus voltage) half-bridge Class D audio power amplifier with single power supply. This reference design demonstrates how to use the IR4302 IC with single power supply, implement protection circuits, and design an optimum PCB layout using PowIRaudio integrated Class D IC. This reference design does not require additional 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 twochannel design is scalable for power and the number of channels.

IRAUDAMP17主要特点:

Output Power: 100W x 2 channels (10%THD+N 4Ω load; with heatsink),

60W x 2 channels (10%THD+N 4Ω load; no heatsink),

Multiple Protection Features: Over-current protection (OCP), high side and low side

Over-voltage protection (OVP),

Under-voltage protection (UVP), high side and low side

Over-temperature protection (OTP)

PWM Modulator: Self-oscillating half-bridge topology

IRAUDAMP17应用:

 AV receivers

 Home theater systems

 Mini component stereos

 Powered speakers

 Sub-woofers

 Musical Instrument amplifiers

 Car audio amplifiers

IRAUDAMP17主要目的:
20120611111743472.gif
2012061111174362.gif
图6.IRAUDAMP17电路图

IRAUDAMP17质料清单:

20120611111743810.gif
20120611111745497.gif
20120611111745346.gif
图7.IRAUDAMP17 PCB结构图:顶层
20120611111745298.gif
图8.IRAUDAMP17 PCB结构图:底层
概略请见:
ir4302[1].pdf (568.68 KB, 下载次数: 23)
iraudamp17[1].pdf (683.43 KB, 下载次数: 25)

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wbsh 揭晓于 2012-7-15 15:38:52
O(∩_∩)O谢谢
wbsh 揭晓于 2012-7-15 15:38:55
谢谢
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