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OB2520 Series |
High Precision CC/CV Primary-side PWM Controller |
OB2520 is a high performance offline PSR controller for
low power AC/DC charger and adapter applications. It operates in primary-side
sensing and regulation. Consequently, opto-coupler and TL431 could be
eliminated.
Features:
◆ Ultra Low Standby Power
◆ ±5% Constant Voltage Regulation at Universal AC input
◆ High precision Constant Current Regulation at
Universal AC input
◆ Primary-side Sensing and Regulation Without TL431 and
Opto-coupler
◆ Programmable CV and CC Regulation
◆ Built-in Primary winding inductance compensation
◆ Programmable Cable Drop Compensation
◆ Driver BJT Switch
◆ Ultra Low Start-up Current (Typ. 1uA)
◆ VDD Over Voltage Protection
◆ Built-in Feedback Loop Open Protection
◆ Built-in Short Circuit Protection
◆ Built-in Leading Edge Blanking (LEB)
◆ Cycle-by-Cycle Current Limiting
◆ VDD Under Voltage Lockout with Hysteresis (UVLO)
◆ Available in SOT23-6 package, RoHS compliant
Applications:
◆ Cell Phone Charger
◆ PMP Adapter/Charger
◆ Small Power Adapter
◆ Auxiliary Power for PC, TV etc.
◆ Linear Regulator/RCC Replacement
Device | Driver Switch | Max Pout(W)
(85~264V) | OB2520 | BJT | 5 | OB2520D | BJT | 5 | OB2520M | MOSFET | 8 |
Typical
Application:
|
如需详细技术资料和样片测试，请随时和我联系。
OB2520系列
高精度CC / CV主面PWM控制器
OB2520是一个高性能的离线PSR控制器低功率AC
/ DC充电器和适配器的应用程序。 它是在初级侧感测和监管。因此,光耦合器等和TL431可以被消除。
特点:
◆超低待机功率
◆±5%恒压调节在通用交流输入
◆高精度恒流调节在通用交流输入
◆初级侧感测和监管没有TL431和光耦合器等
◆可编程的简历和CC监管
◆内置初级绕组电感补偿
◆可编程电缆压降补偿
◆司机是开关
◆超低启动电流(打字。1
ua)
◆VDD过电压保护
◆内置反馈回路打开保护
◆内置短路保护
◆内置前沿消隐(1)
◆逐周期电流限制
◆VDD低电压闭锁与滞后(UVLO)
◆可在SOT23-6包,通过无铅认证
应用程序:
◆手机充电器
◆PMP适配器/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
设备驱动开关马克斯撅嘴(W)(85 ~ 264 v)是5
OB2520D OB2520是5 OB2520M MOSFET 8典型应用:
