NXP TEA1733 GreenChip III 75瓦开关电源控制方案
NXP 公司的TEA1733T, TEA1733P, TEA1733LT和TEA1733LP是低成本 GreenChip III 75瓦开关电源(SMPS)控制器，适用于反激拓扑。采用固定频率模式和频率抖动，以降低EMI。输入电压12V到30V，保护包括过功率保护(OPP)，输入欠压保护(UVP)和过压保护(OVP)，输出OVP和超温保护(OTP)。控制功率达75W。本文介绍了TEA1733x主要特性，方框图以及典型配置图和典型应用电路图。
TEA1733(L)T; TEA1733(L)P GreenChip III SMPS control IC
The TEA1733T, TEA1733P, TEA1733LT and TEA1733LP are low cost Switched Mode Power Supply (SMPS) controller ICs intended for flyback topologies. They operate in fixed frequency mode. To reduce ElectroMagnetic Interference (EMI), frequency jitter has been implemented. Slope compensation is integrated for Continuous Conduction Mode (CCM) operation.
The TEA1733(L) includes OverPower Protection (OPP). This enables the controller to operate under overpower situations for a limited amount of time.
Two pins, VINSENSE and PROTECT, are reserved for protection purposes. Input UnderVoltage Protection (UVP) and OverVoltage Protection (OVP), output OVP and OverTemperature Protection (OTP) can be implemented using a minimal number of external components.
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