BD9781HFP-TR

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

The BD9781HFP-TR is a multi-phase synchronous buck regulator with integrated MOSFETs from ROHM Semiconductor. It is designed for use in computing and consumer application, providing power management for CPU, GPU and memory supplies of the system.

It operates over a wide input voltage range and is capable of delivering an adjustable output voltage in the range of 0.6V to 3.3V. The device includes an internal 3A-rated synchronous MOSFETs with low Rdson and fast switching times; a low-ripple PWM control with 0.5% reference accuracy; digital soft-start control; output over-voltage protection; thermal shutdown protection; and voltage monitoring with adjustable Hysteresis. It also provides soft-stop current-limit protection as well as under-voltage lockout for both input and output.

Application fields

The BD9781HFP-TR synchronous buck regulator is designed for computer, server and consumer applications and offers power management for CPU, GPU and memory supplies of the system. It offers a wide input voltage range from 4.5V to 20V, supporting a variety of power sources, while providing output voltage accuracy of up to 0.6V to 3.3V and current spikes up to 8amps.

The BD9781HFP-TR is suitable for low-power applications such as smartphones and tablets, as it integrates a 3 channels 3A synchronous MOSFETs, with low Rdson and fast switching times to ensure optimal efficiency.

The device supports multi-phase parallel and serial configuration, providing a wide range of operating temperature and high efficiency. Moreover, it integrates soft start function and over-voltage protection functions to ensure safety and reliability in the application.

Working Principle

The BD9781HFP-TR synchronous buck regulator operates in a 2 phase parallel configuration, with an external phase voltage source connected through an inductor. The device has an adjustable output voltage with an accuracy of up to 0.5%. The output voltage is controlled by an internal digital PWM control circuit, using feedback from the output voltage level, or the current state of the output voltage.

The BD9781HFP-TR also includes an internal 3A-rated synchronous MOSFETs, with low Rdson and fast switching times, as well as power-on-reset logic, soft start control and voltage monitoring with adjustable Hysteresis, providing protection against over-current, under-voltage and over-voltage. In addition, it also includes output over-voltage protection and thermal shutdown protection.

The device is also capable of operating in both continuous and discontinuous conduction modes, providing protection against current spikes up to 8A. The device enables the user to easily control the output voltage and current with output voltage control pins and enable / disable pins connected to the external power supply.

The BD9781HFP-TR synchronous buck regulator is a high-performance device designed for computer, server and consumer applications. It provides power management for CPU, GPU and memory supplies of the system, with an adjustable output voltage of up to 3.3V. The device offers low Rdson and fast switching times and supports multi-phase parallel and serial configuration, providing high efficiency and low ripple.

The specific data is subject to PDF, and the above content is for reference