BM1P066FJ-E2 Integrated Circuits (ICs)

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The BM1P066FJ-E2 is a Power Management IC (PMIC) suitable for AC/DC conversion and offline switching applications. It is a robust, multiple stage DC/DC controller with a wide range of integrated power supply functions. Its integrated circuit (IC) has a wide range of features, including a variety of fixed frequency oscillators, voltage reference sources, error amplifiers, fault detectors, power supply sequencing blocks and other peripheral components required for offline converter implementations. The PMIC also includes low-side gate drive circuitry, high-side current sensing and leading-edge blanking to reduce conducted and radiated conducted emissions.

The BM1P066FJ-E2 application field is designed to target low end applications such as computer peripherals, low-voltage bus supplies, switched-mode charger systems, distributed isolated supplies and more. The main advantage of this PMIC is its robust and integrated design, which makes it well suited for those applications that require a low power, low cost and convenient solution. Its wide range of features, such as its advanced multi-stage architecture, coupled with integrated protection, current sensing, and leading edge blanking, also make it a great choice for applications that require system resilience.

The BM1P066FJ-E2 working principle mainly works by taking a low voltage input and providing a regulated output. The IC is designed to provide high efficiency and operate over a wide operating temperature. Typically, it is configured as an offline AC/DC switching regulator with a two stages topology. The two stages topology provides low output voltage ripple and low power dissipation.

In the first stage, an internal oscillator generates a high-frequency voltage controlled oscillator (VCO), which then passes through a control circuit to the first stage switch (SW1), generating a fixed frequency square wave signal. This signal is used to turn the main switch on and off, providing the output voltage. The second stage of the IC is made up of an error amplifier, which is used to generate a feedback signal to control the output voltage. This signal is sent to the second stage switch (SW2) where it modulates the duty cycle of the main switch, thus controlling the output voltage.

Other features of the BM1P066FJ-E2 include over-voltage and over-current protection, current sensing with leading-edge blanking, soft start, over-temperature protection, fast response and hysteretic current limit. All of these features as well as the system resilience make this PMIC an ideal solution for various AC/DC conversion and offline switching applications.

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