RAA223021 是一款具有超低待机功率的通用的输入 AC/DC 开关稳压器,其具备 700V 集成 MOSFET,能够在降压模式下提供高达 12W 的输出功率,可在反激模式下提供高达 12W 的输出功率。 它支持低至 3.3V 的输出电压,无需额外的 LDO。
RAA223021 将恒关时间控制与脉冲调频 (PFM) 相结合,用于轻负载操作。 恒关时间控制开关频率比可听频率高出约 43kHz。 PFM 消除了任何潜在的可听噪声,同时提供了卓越的轻负载效率和超低功耗(空载时 < 20mW)。 效率高达 80%。 内置的频率抖动进一步降低了 EMI 噪声频谱。
RAA223021 还具有输入功率不足保护功能,可防止输入电路在低输入电压下的过电流,并在输出故障条件(如短路、过载、过电压和开路反馈)下进行打嗝保护。
RAA223021 采用 SOIC-7 封装。
The RAA223021 evaluation board (RTKA223021DE0000BU) is a high voltage buck converter that demonstrates a low-cost high performance non-isolated AC/DC convertor. It...
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The innovative RAA2230xx family of 700V non-isolated AC/DC buck regulators delivers ultra-low-power consumption, excellent noise and EMI suppression, as well as reduced overall system cost for a wide range of applications, including home appliances, sensing systems, white goods, power meters and industrial controls.