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RT8115A為一款輸入電壓5V/12V的高效率單相同步降壓型DC/DC控制器,採用Green Voltage Mode (GVMTM)控制,可以提高輕負載條件下轉換器的效率。在輕載條件下,IC自動操作在diode emulation mode,該模式以恆定導通時間PFM操作以降低開關頻率,進而提高轉換效率。隨著負載電流的增大,RT8115A會工作在 continuous conduction mode ,以固定頻率PWM操作。由於RT8115A嵌入了MOSFET柵極驅動器,因此具有較高的驅動能力,可支持的驅動電壓高達12V的高輸出電流的應用。RT8115A採用無損低側MOSFET RDS(ON)電流檢測技術的過電流保護,閾值可由LGATE引腳(LGOCS)設定。其它特點包括電源良好指示、始能/停止控制和內部軟啟動。RT8115A還提供了故障保護功能,以保護功率級的輸出。上述功能為客戶提供高效率且具有成本效益的電源轉換解決方案。RT8115A提供WDFN-10L 3x3封裝。
節能控制模式 Green Voltage Mode (GVMTM)
輕載效率高
5V至12V驅動器電壓
內鉛高驅動能力N-MOSFET柵極驅動器
內部300kHz固定頻率震盪器
85%最大PWM工作週期
電源良好指示
始能/停止控制
自適零電流檢測
内置軟啟動
無損低側MOSFET RDS(ON)電流檢測技術的過電流保護
LGATE過電流設定(LGOCS)
輸出電壓監測
OCP, UVP, OVP, OTP, UVLO
符合 RoHS 規範且不含鹵素
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