BM2P034

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The BM2P034 is a Pulse Width Modulation (PWM) controller designed by Richtek Technology Corporation. It is a multi-function device with various features such as digital current mode control, soft-start, over current protection, thermal shutdown, over voltage protection, and power-saving mode. The BM2P034 is available in an economical 8-pin SSOP package, ideal for low-power off-line AC/DC applications.

The main application for the BM2P034 is for AC/DC offline switcher applications, such as adapters, chargers, and power supplies. This device has a pulse-by-pulse current limiting capability, allowing it to limit the peak current of an offline switching circuit. The digital current mode control also ensures maximum efficiency and reduces input and output ripple. Furthermore, the BM2P034\'s integrated logic output can be used to control an external bias winding for cost-effective power stage design.

The BM2P034 provides precise control of both the primary and secondary side of an offline switching circuit. It regulates the output voltage by adjusting the duty cycle of the PWM signal. The BM2P034 can also be used to power an external bias winding, providing a low cost solution for power stage design. Furthermore, the IC includes various protection features such as over current, over voltage, thermal shutdown, and power saving mode.

The BM2P034 has a wide input voltage range (75VAC to 265VAC), making it suitable for applications ranging from laptop adapters to energy-saving light bulbs. It can achieve up to 94.5% efficiency in most applications. The BM2P034 has a built-in digital current-mode control loop, allowing it to provide extremely precise control of both the primary and secondary side of the offline switcher.

The BM2P034 is also designed to reduce input and output ripple, giving it excellent no-load performance and greatly improving the efficiency of the switching power supply. Its soft-start capability allows it to start up smoothly and eliminate stress during startup. In addition, the over current protection, over voltage protection, and thermal shutdown protection help to ensure that the device is reliable and robust.

The BM2P034 is an ideal solution for offline switcher applications, such as adapters, chargers, and power supplies. It provides precise control of both the primary and secondary side of the offline switcher, accurate current and voltage regulation, high efficiency, and excellent protection features. The BM2P034 is also cost effective, making it a great choice for low to medium power AC/DC offline switcher applications.

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