2ED5

2ED5 refers to a specific type of integrated circuit, often found in power electronics applications. It is a high-speed, low-power, non-isolated, synchronous-rectified DC-to-DC converter controller. The "2ED5" designation is a product code used by a semiconductor manufacturer to identify this particular chip. These controllers are designed to improve the efficiency of power supplies by reducing switching losses and voltage drops across diodes. They typically integrate features such as overcurrent protection, undervoltage lockout, and thermal shutdown to ensure reliable operation. The synchronous rectification technique employed by 2ED5 controllers uses MOSFETs instead of diodes to conduct the current during the freewheeling period of the switching cycle. This significantly lowers the conduction losses, leading to higher overall efficiency, especially at lower output voltages. The non-isolated nature means that the input and output grounds are common, simplifying circuit design in many applications. These devices are commonly used in consumer electronics, telecommunications equipment, and various industrial power supply units where efficiency and compact design are important.