NXP TEA1738GT 65W反激开关电源解决方案

NXP公司的TEA1738GT是低成本反激拓扑的开关电源(SMOS)控制器,采用峰值电流和频率控制模式,频率抖动以降低EMI,斜率补偿,具有过功率保胡,输入电压12 V -30 V,适合功率高达75W的高效和低成本电源的各种应用.本文介绍了TEA1738GT主要特性,方框图, 典型配置图, 典型应用电路图以及GreenChip 65 W演示板主要特性,电路图和材料清单与PCB布局图.

The TEA1738GT is a low cost Switched Mode Power Supply (SMPS) controller IC intended for flyback topologies. It operates in peak current and frequency control mode. Frequency jitter has been implemented to reduce ElectroMagnetic Interference (EMI). Slope compensation is integrated for Continuous Conduction Mode (CCM) operation. The TEA1738GT IC 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), output OverVoltage Protection (OVP) and OverTemperature Protection (OTP) can be implemented using a minimal number of external components.
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