Maxim MAX17498A峰值电流模式电源转换方案

Maxim 公司的MAX17498A/B/C是用于反激/升压电源的峰值电流模式AC/DC和DC/DC电源转换器，包括了设计宽输入电压隔离和非隔离电源的所有控制电路，MAX17498A/MAX17498C反激转换器的工作频率250kHz，MAX17498B反激/升压转换器的工作频率500kHz，具有极好的瞬态响应特性，主要用在工业应用的前端AC/DC电源，通信电源等。本文介绍了MAX17498A/MAX17498B/MAX17498C主要特性和优势，方框图和多种起动电路，以及智能电表和PLC电源的应用案例。

The MAX17498A/MAX17498B/MAX17498C devices are current-mode fixed-frequency flyback/boost converters with a minimum number of external components. They contain all the control circuitry required to design wide-input-voltage isolated and nonisolated power supplies. The MAX17498A has its rising/falling undervoltage lock­out (UVLO) thresholds optimized for universal offline (85V AC to 265V AC) applications, while the MAX17498B/ MAX17498C support UVLO thresholds suitable to low-voltage DC-DC applications.
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