NXP TEA1733(L) 低成本SMPS反激拓扑控制方案
NXP 公司的TEA1733(L) 是低成本GreenChip SMPS反激拓扑控制器,输入电压从12V到30V,起动和重起时的电流非常低,典型值为10uA,正常工作的电流低,无负载时为0.5mA,可编程软起动,主要用于高达75W高效高性价比的开关电源.本文介绍TEA1733(L)主要特性, 方框图, 典型配置图和典型应用电路图.
TEA1733T; TEA1733LT: GreenChip SMPS control IC
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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