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 OB2211 Series
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Primary Side Regulation PWM Power Switch |
OB2211 series are offline
PWM power switch ICs. They are designed for primary side regulation with
minimum overall system cost by removing X/Y caps, Photo-coupler and TL431.
They include an internal error amplifier to delivery high performance CC/CV
control. OB2211/OB2212 is highly recommended for cost effective compact
designs in low power adapter and battery charger applications.
Features:
◆ Primary side sensing and
regulation eliminates TL431 and photo-coupler
◆ External adjustable gate drive
capability
◆ Enable no-X and no-Y system
design
◆ Low system cost
◆ Built-in error amplifier for
CV/CC operation
◆ External adjustable CC operation
◆ Low standby power
◆ Frequency shuffling reduces EMI
◆ Available in DIP8 and SOP8
packages, RoHS compliant
Applications:
◆ CC/CV Battery Charger
◇ Cell/Cordless Phone Charger
◇ Digital Camera Charger
◇ PDA Charger
◆ Small Power Adapter
◆ Auxiliary Power for PC, TV etc.
◆ Linear Regulator/RCC Replacement
Device | MOSFET Rdson(ohm) | Package | Max Pout(W)note | Max Pout(W)(85~264V) | OB2211 | 12 | SOP8 | 7 | 4.5 | OB2211H | 12 | SOP8 | 10 | 5 | OB2212 | 12 | DIP8 | 16 | 9 | OB2211 | 5 | DIP8 | 20 | 12 |
Note: Maximum practical continuous power in an open frame
design with sufficient drain pattern as a heat sink, at 50°C ambient, 230Vac
input.
Typical Application:
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OB2211系列
一次侧调节PWM电源开关
OB2211系列是离线PWM功率开关电路。
他们是专为初级侧调节与最低的系统整体成本通过消除X / Y帽、光电耦合器和TL431。它们包括一个内部误差放大器来交付高性能CC / CV控制。OB2211
/ OB2212高度推荐给成本有效的紧凑的设计在低电源适配器和电池充电器的应用程序。
特点:
◆初级侧感测和调节消除TL431和光电耦合器
◆外部可调的栅极驱动能力
◆使没有x和y没有系统设计
◆低系统成本
◆内置误差放大器的简历/ CC操作
◆外部可调CC操作
◆低待机功耗
◆频率降低EMI洗牌
◆可在DIP8和SOP8包,通过无铅认证
应用程序:
◆CC / CV电池充电器
◇细胞/无绳电话充电器
◇数码相机充电器
◇PDA充电器
◆小电源适配器
◆辅助动力为电脑、电视等。
◆线性调节器/碾压混凝土置换
器件MOSFET Rdson(欧姆)包马克斯撅嘴(W)注意马克斯撅嘴(W)(85
~ 264 v)OB2211 12 SOP8 7 4.5 OB2211H 12 SOP8 10 5 OB2212 12 DIP8 16 9 OB2211 5
DIP8 20 12注:最大实际连续功率在一个开放的框架设计有足够的排水模式作为一个散热器,在50°C的环境,230 vac的输入。典型应用:
