NXP TEA1733低成本绿色75W开关电源控制方案
NXP 公司的TEA1733是低成本绿色75W开关电源(SMPS)控制器,用于固定频率模式和反激拓扑.TEA1733集成了频率抖动器以降低EMI,并集成了超功率保护(OPP),输入欠压保护(UVP),过压保护(OVP),输出OVP和超温保护(OTP),可以用在需要效率和高性价比的75W功率电源解决方案.本文介绍了TEA1733主要特性, 方框图, 典型配置框图和典型应用框图.
The TEA1733(L) is a low cost Switched Mode Power Supply (SMPS) controller IC intended for flyback topologies. The TEA1733(L) operates in fixed frequency mode. To reduce ElectroMagnetic Interference (EMI), frequency jitter has been implemented. For Continuous Conduction Mode (CCM) operation, slope compensation is integrated. The TEA1733(L) IC features an OverPower Protection (OPP). The controller can be set to accept an overpower situation for a limited amount of time.
Two pins are reserved for protection purposes. Input UnderVoltage Protection (UVP) and OverVoltage Protection (OVP), output OVP and OverTemperature Protection (OTP) can be implemented with a minimal number of external components.
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