Overview
Description
The RAA489300 is a high-performance buck controller designed for a 3-level buck topology. This topology delivers exceptional efficiency and significantly reduces the required inductance for output voltage regulation. Its innovative design minimizes power loss and reduces system size, making it ideal for compact, high-performance applications. Additionally, the controller ensures a seamless switching mode transition across the entire output voltage range.
The advanced Renesas R3™ technology enhances performance by enabling highly efficient light-load operation, fast transient response, and seamless transitions between discontinuous conduction mode (DCM) and continuous conduction mode (CCM).
The RAA489300 is well-suited for applications requiring versatile input sources, such as high-power barrel adapters and USB Power Delivery (USB PD) adapters. For USB PD applications, it complies with PD specifications and supports Programmable Power Supply (PPS) and Adjustable Voltage Supply (AVS) operation. Independent control loops for input and output voltages and currents ensure precision, safety, and flexibility.
The device features passthrough mode (PTM) in both forward and reverse directions, maximizing efficiency when the input and output voltages are identical. This makes it especially suitable for applications demanding high efficiency and low power loss.
Beyond its core functionality, the RAA489300 incorporates system-level features such as isolation MOSFET control and an adjustable output voltage. Its robust protection mechanisms, including overcurrent protection (OCP), overvoltage protection (OVP), undervoltage protection (UVP), and over-temperature protection (OTP), ensure reliable and safe operation under all conditions.
The controller also supports serial communication through SMBus/I2C to allow the programming of critical parameters for tailored performance. Customizable parameters include minimum input voltage, maximum output voltage, input current limits, and output current limits, offering flexibility and adaptability for diverse applications.
Features
- Single inductor 3-level buck controller
- Patented modulator for flying capacitor balancing and smooth mode transition
- Wide input voltage range: 4.5V to 57.6V
- Wide output voltage range: 3V to 54.912V
- Programmable switching frequency: up to 400kHz (800kHz at switching node effectively)
- EXT5V pin to generate 5V or 10V gate drive voltage through internal charge pump
- Low shutdown current: 25µA
- Passthrough mode (PTM) in both forward and reverse directions
- Supports pre-biased output with soft-start functionality
- Input and output current monitoring
- Protection features: OCP, OVP, UVP, and OTP
- SMBus and I2C compatible
- 4mm × 4mm 32-lead TQFN package
Comparison
Applications
Documentation
Featured Documentation
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Design & Development
Support
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Support Communities
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RAA489300 EVM
Hi , I have a RTKA489300DE0000BU, which is EVM for RAA489300, three-level. When I power on, no output. Does this device need I2C to initiate the output? The default output is zero? Can you give me the software for RAA489300 GUI? Gavin
Sep 6, 2024 -
Full datasheet for RAA489300
Hi , May I have full datasheet for RAA489300? I need the register map. Now I only have preliminary Short-Form version without register map. Gavin
Sep 9, 2024
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RAA489300 is a high-performance buck controller designed for a 3-level buck topology delivering exceptional efficiency while significantly reducing the required inductance for regulating the output voltage in a compact size.
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