BM1050AF-GE2 Integrated Circuits (ICs)

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Power Management Integrated Circuits (PMICs) are circuits that are used to manage the power that is generated by various sources within a system or device. They help to reduce power dissipation and increase efficiency, while ensuring reliability and stability. The BM1050AF-GE2 is a power management product that falls within the PMIC family. This device is an AC/DC converter and an offline DC/DC converter all in one, which can be used in a variety of applications. This article explores the application field and working principle of the BM1050AF-GE2.

The BM1050AF-GE2 is a low-cost, highly efficient AC/DC and DC/DC converter with a wide range of input voltage capabilities. It is designed for applications that require an input range of 85-265VAC, for a wide range of applications such as Solid State Lighting (SSL), power over Ethernet (PoE), digital displays, and more. It is an ideal solution for designs where space and cost are a factor.

The BM1050AF-GE2 uses a novel switching technology to achieve its high efficiency. Its built-in Flyback DC/DC controllers are designed to operate with universal AC input, meaning the user does not need to worry about external components or configuring the correct operating frequency. The controller also provides over-current and short-circuit protection, as well as soft-start and inrush current limiting.

The architecture of the BM1050AF-GE2 AC/DC converter consists of a rectifier stage, followed by a forward-mode power MOSFET converter and a controller stage. The rectifier stage consists of an “Active Clamp” circuit, which is a type of rectifier circuit that reduces switch losses and noise, resulting in higher efficiency and better EMI performance. The forward-mode power MOSFET converter uses a bridge of power MOSFETs to regulate voltage and current, and achieves high efficiency by using Pulse Width Modulation (PWM) to vary the on-off time of the power switches.

The controller stage of the BM1050AF-GE2AC/DC converter is based on a variable frequency, variable width PWM controller. This controller provides constant on-time, variable frequency PWM control, which allows the system to operate at higher frequencies when the load is light, and lower frequencies when the load is heavy, thus achieving energy savings and increased efficiency. The controller is also equipped with over-voltage, over-current and short-circuit protection functionality, ensuring that the system is reliable and efficient.

The BM1050AF-GE2 also features a “Burst Mode”, which is an innovative feature that reduces the output power by changing the frequency of operation when there is no load present. In this mode, the controller changes the switching frequency to reduce the power consumption of the system, resulting in a reduction of power consumption up to 80%.

The BM1050AF-GE2 is an ideal solution for applications that require an efficient and reliable AC/DC and DC/DC converter. Its innovative architecture, high efficiency, and flexible capabilities make it an ideal choice for applications that require low cost and space savings. The integrated protection and safety features, combined with its wide input voltage range and low output-voltage ripple, make it perfect for cost-sensitive applications.

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