Fairchild FSEZ1016A高度集成PWM电源控制方案

Fairchild 公司的FSEZ1016A是高度集成PWM控制器,能使小功率反激转换器增加性能,简化电路设计,特别是电池充电器的应用. FSEZ1016A的起动电流仅为10uA,允许使用高的起动电阻,从而进一步降低了功耗.工作电流为3.5mA,主要用在手机,无绳电话,PDA,数码相机的电池充电器,以及替代线性变压器和RCC开关电源.本文介绍了FSEZ1016A主要特性,方框图, 典型应用以及5W (5V/1A)应用电路图和所用材料清单.

FSEZ1016A: Primary-Side-Regulation PWM Integrated Power MOSFET

This highly integrated PWM controller provides features to enhance the performance of low-power flyback converters. The proprietary topology of FSEZ1016A enables simplified circuit design, especially for batterycharger applications. A low-cost, smaller, and lighter charger is the result when compared to a conventional design or a linear transformer. The startup current is only 10μA, which allows large startup resistance for further power saving.

To minimize the standby power consumption, the proprietary green-mode function provides off-time modulation to linearly decrease PWM frequency under light-load conditions. This green mode assists the power supply in meeting power conservation requirements.

By using FSEZ1016A, a charger can be implemented with fewer external components and minimized cost. FSEZ1016A-series controller is available in the 7-pin SOIC package.
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