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RT8115A为一款输入电压5V/12V的高效率单相同步降压型DC/DC控制器，采用Green Voltage Mode (GVM<sup>TM</sup>)控制，可以提高轻负载条件下转换器的效率。在轻载条件下，IC自动操作在diode emulation mode，该模式以恒定导通时间PFM操作以降低开关频率，进而提高转换效率。随着负载电流的增大，RT8115A会工作在 continuous conduction mode ，以固定频率PWM操作。由于RT8115A嵌入了MOSFET栅极驱动器，因此具有较高的驱动能力，可支持的驱动电压高达12V的高输出电流的应用。RT8115A采用无损低侧MOSFET R<sub>DS(ON)</sub>电流检测技术的过电流保护，阈值可由LGATE引脚(LGOCS)设定。其它特点包括电源良好指示、始能/停止控制和内部软启动。RT8115A还提供了故障保护功能，以保护功率级的输出。上述功能为客户提供高效率且具有成本效益的电源转换解决方案。RT8115A提供WDFN-10L 3x3封装。
RT8115A 电路图
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<div class="spec-list"><ul class="lv1"><li>节能控制模式 Green Voltage Mode (GVM<sup>TM</sup>) </li><li>轻载效率高 </li><li>5V至12V驱动器电压 </li><li>内铅高驱动能力N-MOSFET栅极驱动器 </li><li>内部300kHz固定频率震荡器 </li><li>85%最大PWM工作周期 </li><li>电源良好指示 </li><li>始能/停止控制 </li><li>自适零电流检测 </li><li>内置软启动 </li><li>无损低侧MOSFET R<sub>DS(ON)</sub>电流检测技术的过电流保护 </li><li>LGATE过电流设定(LGOCS) </li><li>输出电压监测 </li><li>OCP, UVP, OVP, OTP, UVLO </li><li>符合 RoHS 规范且不含卤素 </li></ul></div>
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RT8115A 订购信息
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<div class="spec-list"><ul class="lv1"><li>主机板、记忆体、晶片电源 </li><li>显示卡,GPU/记忆体核心电源 </li><li>低压大电流DC/DC调节器 </li></ul></div>
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