ON Semiconductor NCP1393BDR2G High Performance Resonant Mode Controller

The NCP1393BDR2G is a cutting-edge resonant mode controller integrated circuit (IC) designed and manufactured by ON Semiconductor. It is a highly efficient, versatile component widely used in the power supply industry, particularly for applications requiring low power dissipation and high power density. This controller IC is ideal for implementing half-bridge or full-bridge topologies in switch mode power supplies (SMPS), including those found in flat-panel televisions, desktop monitors, and high-efficiency power adapters.

One of the key features of the NCP1393BDR2G is its ability to operate at a fixed frequency while employing a variable duty cycle control, which allows for Zero Voltage Switching (ZVS) or quasi-resonant operation. This characteristic significantly reduces switching losses and enhances overall system efficiency. The IC's high-frequency capability enables the use of smaller, more cost-effective magnetic components, thus reducing the size and cost of the power supply.

The NCP1393BDR2G also incorporates a range of protection features to ensure the safety and reliability of the power supply system. These include an adjustable Over-Current Protection (OCP), Brown-Out Detection, and an Over-Voltage Protection (OVP) which immediately shuts down the IC upon detecting an over-voltage condition, preventing potential damage to the circuit.

Additional features of this controller include a startup sequence with a soft-start capability that minimizes stress on the power stage during power-up, and a frequency foldback mechanism that limits the maximum frequency during short-circuit or overload conditions, further protecting the power supply components.

ON Semiconductor has packaged the NCP1393BDR2G in a compact SOIC-8 package, making it suitable for space-constrained applications. Its high level of integration and performance, combined with its robust protection features, make the NCP1393BDR2G an excellent choice for designers looking to create efficient and reliable power solutions.

With the NCP1393BDR2G, ON Semiconductor continues to demonstrate its commitment to providing innovative power management solutions that meet the evolving needs of the electronics industry.