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概览
描述
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。
特性
- 超低待机功率 (< 20mW)
- 无可听噪声
- 低静态电流 (< 80μA)
- 输出电压低至 3.3V
- 频率抖动带来低 EMI
- 7 Ld SOIC 封装
- 可编程 PFM 允许优化 COUT，以满足各种备用电源需求
- 保护功能：短路保护 (SCP)、过载保护 (OLP)、过电压保护 (OVP)、开反馈保护、超温保护 (OTP)
应用
应用
- 家用电器
- 家庭自动化、物联网和传感器
- 计量和工业控制
- 偏置电源
设计和开发
开发板与套件
开发板与套件
RAA223021 High Voltage Buck Converter Evaluation Board supports 85VAC to 265VAC Input and 12V 667mA Output
The RAA223021 evaluation board (RTKA223021DE0000BU) is a high voltage buck converter that demonstrates a low-cost high performance non-isolated AC/DC convertor. It...
RAA223021 High Voltage Flyback Converter Evaluation Board supports 85VAC to 265VAC Input and 12V 1A Output
The RAA223021 evaluation board (RTKA223021DE0010BU) is a high voltage flyback converter that is designed to demonstrate a low-cost high performance isolated AC/DC...
模块
ECAD 模块
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.
产品选择
Processing table
| SOICN | Reel | 2500 |
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play_circle_filled视频和培训
RAA2230xx Non-Isolated AC/DC 700V Buck Regulator Family
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.
Video List
