MC33260D

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The MC33260D is a Power Factor Corrector (PFC) from NXP Semiconductors with firmware written for various applications and settings. This PFC controller is designed for use in AC-DC and DC-DC power converters such as off-line, transitional and pre-regulated switchers, offline, cold start conversion and active standby operations. It has overvoltage, undervoltage, overcurrent, and temperature protections that provide a safe, stable and reliable operation. The MC33260D also features a cycle-by-cycle overcurrent limit with adjustable response time, a maximum power point tracking (MPPT) mode, and supports a supply voltage range of 3V to 400V.

The working principle of the MC33260D PFC is to ensure that the input power factor is near unity by maintaining a fixed switching frequency of the AC-DC converter. The controller uses a Closed Loop Voltage Mode (CLVM) control algorithm to regulate the input current and the output voltage. It also includes an Auto-biasing operation with adjustable level of current feedback, and has a current sense amplifier with an internal per-cycle and per-channel power limiting. The controller has an adjustable PFC regulation level, allowing for high-performance PFC operation, and can achieve input power factors of up to 0.99, depending on the type of converter circuit and input voltage range.

The MC33260D is a highly efficient and cost-effective PFC application field controller and is suitable for many different applications, including telecom power supplies, inverters and motor drives, solar and other high-efficiency current-mode converters. It is also used in advanced AC-to-DC converters for server, notebook and monitor applications. The MC33260D is designed to provide a high level of safety with its integrated overvoltage, undervoltage and overcurrent protections. It can also be used in multi-phase topologies, allowing for increased system performance, power density and efficiency.

The MC33260D PFC is a very useful and versatile controller for many different types of applications, including telecom power supplies, inverters, and motor drives, solar and other high-efficiency current-mode converters. Its Closed-Loop Voltage Mode (CLMV) control algorithm allows for a very high level of power factor correction, and its Auto-biasing, integrated overvoltage, undervoltage and overcurrent protections, and adjustable PFC regulation level make it a reliable and safe choice for a wide range of applications. For those looking for a powerful, cost-effective PFC controller, the MC33260D is an excellent choice.

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