➀ ROHM has developed new PWM controller ICs optimized for AC-DC power supply in various industrial applications; ➁ Four variants are designed to drive a wide range of power semiconductors; ➂ The ICs feature a wide input voltage range and are compatible with standard power supply circuit products.

1. The article discusses the MIC9130, a high-speed PWM controller designed for efficient power conversion and protection in PoE applications. 2. It meets IEEE802.3at standards and features high efficiency, fast response time, and a comprehensive protection system. 3. The reference design by Microchip simplifies the PoE design process with a complete solution including an EMI filter and isolated flyback DC/DC converter.