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HT8513 单节锂电供电内置动态同步升压5W单声道音频功放IC解决方案

由 winniewei 提交于

<p><span>单节锂电池供电的音箱依然是目前音箱市场量最大的产品品类，功率、效率<span>、</span>听觉感受<span>、</span></span><span lang="EN-US">PCB</span><span>外围成本</span><span>等是电子工程师设计选型时对音频功放</span><span lang="EN-US">IC</span><span>主要指标要求。基于便携蓝牙音箱输出功率越来越大的趋势，功放</span><span lang="EN-US">IC</span><span>内置升压是必须的。而功率提升势必缩短锂电池的续航时间，尤其小容量锂电池产品更加明细。</span></p>

<p><span>深圳市永阜康科技有限公司针对便携式蓝牙音箱以及<span lang="EN-US">4</span>寸、<span lang="EN-US">6</span>寸手提户外音箱的应用需求，推广一款单节锂电池供电内置动态同步升压<span lang="EN-US">5W</span>单声道音频功放<span lang="EN-US">IC-HT8513</span>。<span lang="EN-US">HT8513</span>相比同类竞品有三大优势：一是采用高效率的同步升压，相比非同步效率提高<span lang="EN-US">5%</span>，并且外围不需要肖特基二极管，外围升压采用小电感，<span lang="EN-US">PCB</span>面积也更小，整机成本更低；二是动态升压，芯片内部自动检测输入音频信号大小，小信号不升压，大信号自动升压，极大延长锂电池的续航时间（尤其是中小音量播放时测试，相对恒定升压音频功放播放时间延长<span lang="EN-US">15%</span>以上）；三是相比电荷泵升压功放，能驱动最低<span lang="EN-US">2</span>欧的喇叭，低音更足。</span></p>

<p><span lang="EN-US">HT8513</span><span>内置防破音功能，保持嘉兴禾润音频功放一贯的音质特点：低音饱满下潜好，中音磁性而不吵，高音清澈而不刺。另外，<span lang="EN-US">HT8513</span>内置<span lang="EN-US">DC-DC</span>模块的限流值外围可调，可匹配不同电池保护板放电电流，应用非常灵活。完善的过流保护，过热保护，欠压保护，输出短路保护。</span></p>

<p><strong><span>产品特点</span></strong></p>

<ul>
<li><span>防削顶失真功能<span lang="EN-US">(</span>防破音<span lang="EN-US">, Anti-Clipping Function, ACF)</span></span></li>
<li><span>免滤波器数字调制，直接驱动扬声器</span></li>
<li><span>输出功率 <span lang="EN-US">5W (VBAT=3.3V, RL=4</span>Ω<span lang="EN-US">, THD+N&lt;10%, 20-20kHz full band)</span></span></li>
<li><span><span lang="EN-US">VBAT</span>供电范围：<span lang="EN-US">2.7V</span>至<span lang="EN-US">5.5V</span></span></li>
<li><span>高效自适应同步升压功能<span lang="EN-US"> -</span>延长电池播放时间<span lang="EN-US"> -</span>可调节最大限流值，有效防止电池拉死</span></li>
<li><span><span lang="EN-US">AB/D</span>类可切换</span></li>
<li><span>保护功能<span lang="EN-US">:</span>过流<span lang="EN-US">/</span>过热<span lang="EN-US">/</span>欠压异常保护功能</span></li>
<li><span>无铅封装，<span lang="EN-US">SSOP10L-PP</span></span></li>
</ul>

<p><span>应用</span></p>

<ul>
<li><span>蓝牙<span lang="EN-US">/ Wi-Fi</span>音箱<span lang="EN-US">&nbsp; </span>・便携式音箱<span lang="EN-US">&nbsp; </span>・智能音箱<span lang="EN-US">&nbsp;&nbsp; </span>・智能家居</span></li>
</ul>

<p><span lang="EN-US">HT8513</span><span>输出功率测试：</span><span lang="EN-US">VBAT=3.6V</span><span>，</span><span lang="EN-US">f=1kHz</span><span lang="EN-US"> <!--[if gte mso 9]><xml>
<o:OLEObject Type="Embed" ProgID="Excel.Sheet.12" ShapeID="_x0000_i1025"
DrawAspect="Content" ObjectID="_1684927915">
</o:OLEObject>
</xml><![endif]--></span></p>

<p><img alt="HT8513 单节锂电供电内置动态同步升压5W单声道音频功放IC解决方案" data-entity-type="file" data-entity-uuid="99b6606f-8e86-4ba8-b597-b73748fbf188" src="http://new.eetrend.com/files/2021-06/wen_zhang_/100113668-209385-1.png&…; /></p>

<p><span lang="EN-US">HT8513</span><span>动态升压波形图：</span></p>

<p><img alt="HT8513 单节锂电供电内置动态同步升压5W单声道音频功放IC解决方案" data-entity-type="file" data-entity-uuid="4019352f-bc34-4be9-90d3-5aec39bc4ab7" src="http://new.eetrend.com/files/2021-06/wen_zhang_/100113668-209386-2.jpg&…; /></p>

<p><span lang="EN-US">HT8513 </span><span>对比</span><span lang="EN-US">2850</span><span>输出功率曲线：</span><span lang="EN-US">(VBAT=3.6V,RL=4</span><span>Ω</span><span lang="EN-US">,</span><span>防破音打开</span><span lang="EN-US">ACF)</span><span lang="EN-US"> </span></p>

<p><img alt="HT8513 单节锂电供电内置动态同步升压5W单声道音频功放IC解决方案" data-entity-type="file" data-entity-uuid="11db5da2-725d-43ea-a9eb-229c3478d66b" src="http://new.eetrend.com/files/2021-06/wen_zhang_/100113668-209387-3.jpg&…; /></p>

<p><span lang="EN-US">HT8513 </span><span>对比</span><span lang="EN-US">2850</span><span>输出功率曲线：</span><span lang="EN-US">(VBAT=3.6V,RL=3</span><span>Ω</span><span lang="EN-US">,</span><span>防破音打开</span><span lang="EN-US">ACF)</span><span lang="EN-US"> </span></p>

<p><img alt="HT8513 单节锂电供电内置动态同步升压5W单声道音频功放IC解决方案" data-entity-type="file" data-entity-uuid="a1b03d27-77d2-4e13-b282-ef1a8c4682a2" src="http://new.eetrend.com/files/2021-06/wen_zhang_/100113668-209388-4.jpg&…; /></p>

<p><span lang="EN-US">HT8513 </span><span>对比</span><span lang="EN-US">2850</span><span>输出功率曲线：</span><span lang="EN-US">(VBAT=3.6V,RL=2.5</span><span>Ω</span><span lang="EN-US">,</span><span>防破音关闭</span><span lang="EN-US">ACFOFF)</span><span lang="EN-US"> </span></p>

<p><img alt="HT8513 单节锂电供电内置动态同步升压5W单声道音频功放IC解决方案" data-entity-type="file" data-entity-uuid="3fb04ff0-d7cf-42c9-8bf6-17a7a237fea0" src="http://new.eetrend.com/files/2021-06/wen_zhang_/100113668-209390-5.jpg&…; /></p>

<p><span lang="EN-US">HT8513</span><span>输出功率曲线：</span><span lang="EN-US">(VBAT=3.6V,RL=2</span><span>Ω</span><span lang="EN-US">,</span><span>防破音关闭</span><span lang="EN-US">ACFOFF)</span><span lang="EN-US"> </span></p>

<p><img alt="HT8513 单节锂电供电内置动态同步升压5W单声道音频功放IC解决方案" data-entity-type="file" data-entity-uuid="8c84e010-15f8-44d5-9ecd-d44571ccb392" src="http://new.eetrend.com/files/2021-06/wen_zhang_/100113668-209389-6.jpg&…; /></p>

<p><span lang="EN-US">HT8513</span><span>应用信息</span></p>

<p><span lang="EN-US">1. HT8513</span><span>脚位图</span></p>

<p><img alt="HT8513 单节锂电供电内置动态同步升压5W单声道音频功放IC解决方案" data-entity-type="file" data-entity-uuid="f1f06999-9c08-4b55-9ffa-a6ea7f4ffa81" src="http://new.eetrend.com/files/2021-06/wen_zhang_/100113668-209391-7.jpg&…; /></p>

<p><span lang="EN-US">2.</span><span lang="EN-US"> HT8513</span><span>管脚说明</span></p>

<p><img alt="HT8513 单节锂电供电内置动态同步升压5W单声道音频功放IC解决方案" data-entity-type="file" data-entity-uuid="ea9989c0-8fbb-454c-8970-7614d55f7369" src="http://new.eetrend.com/files/2021-06/wen_zhang_/100113668-209392-8.jpg&…; /></p>

<p><span lang="EN-US">3. HT8513 DEMO</span><span>板</span><span>原理图</span><span lang="EN-US"> </span></p>

<p><img alt="HT8513 单节锂电供电内置动态同步升压5W单声道音频功放IC解决方案" data-entity-type="file" data-entity-uuid="9e06ade0-e4f9-47a2-8a33-5b3945ea600d" src="http://new.eetrend.com/files/2021-06/wen_zhang_/100113668-209393-9.jpg&…; /></p>

<p><span lang="EN-US">4.</span><span lang="EN-US"> HT8513 DEMO</span><span>板</span><span lang="EN-US">PCB</span><span>顶层设计图</span><span lang="EN-US"> </span></p>

<p><img alt="HT8513 单节锂电供电内置动态同步升压5W单声道音频功放IC解决方案" data-entity-type="file" data-entity-uuid="2ec5287e-6a6d-4366-bfe1-26a6b1cedcc4" src="http://new.eetrend.com/files/2021-06/wen_zhang_/100113668-209394-10.jpg…; /></p>

<p><span lang="EN-US">5. </span><span lang="EN-US">HT8513 DEMO</span><span>板<span lang="EN-US">PCB</span>底层设计图</span><span lang="EN-US"> </span></p>

<p><img alt="HT8513 单节锂电供电内置动态同步升压5W单声道音频功放IC解决方案" data-entity-type="file" data-entity-uuid="672e332d-4945-48b6-912c-822826aa5f5d" src="http://new.eetrend.com/files/2021-06/wen_zhang_/100113668-209395-11.jpg…; /></p>

<p><span lang="EN-US">6.</span><span lang="EN-US"> HT8513 <span>&nbsp;</span>DEMO</span><span>板贴片图</span></p>

<p><img alt="HT8513 单节锂电供电内置动态同步升压5W单声道音频功放IC解决方案" data-entity-type="file" data-entity-uuid="b426b974-1454-4f97-9e8b-90e74a4047de" src="http://new.eetrend.com/files/2021-06/wen_zhang_/100113668-209396-12.jpg…; /></p>

<p><span lang="EN-US">7.</span><span lang="EN-US"> HT8513 <span>&nbsp;</span>DEMO</span><span>板物料清单</span><span lang="EN-US"> <!--[if gte mso 9]><xml>
<o:OLEObject Type="Embed" ProgID="Excel.Sheet.8" ShapeID="_x0000_i1026"
DrawAspect="Content" ObjectID="_1684927917">
</o:OLEObject>
</xml><![endif]--></span></p>

<p><img alt="HT8513 单节锂电供电内置动态同步升压5W单声道音频功放IC解决方案" data-entity-type="file" data-entity-uuid="586a161d-5713-43f0-b18c-0fd93bc0f21f" src="http://new.eetrend.com/files/2021-06/wen_zhang_/100113668-209397-13.jpg…; /></p>

<p><span lang="EN-US">8. HT8513 <span>&nbsp;</span>DEMO</span><span>板</span><span>实物图</span></p>

<p><span><img alt="HT8513 单节锂电供电内置动态同步升压5W单声道音频功放IC解决方案" data-entity-type="file" data-entity-uuid="02f62c50-b9ef-4ded-ac6a-ad83e2bda1f1" src="http://new.eetrend.com/files/2021-06/wen_zhang_/100113668-209398-14.jpg…; /></span></p>