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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 (GVMTM)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 ,以恒定频率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 RDS(ON)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。
节能控制模式 Green Voltage Mode (GVMTM)
轻载效率高
5V至12V驱动器电压
内铅高驱动能力N-MOSFET栅极驱动器
内部300kHz恒定频率震荡器
85%最大PWM工作周期
电源良好指示
始能/停止控制
自适零电流检测
内置软启动
无损低侧MOSFET RDS(ON)电流检测技术的过电流保护
LGATE过电流设定(LGOCS)
输出电压监测
OCP, UVP, OVP, OTP, UVLO
符合 RoHS 规范且不含卤素
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