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RRW43110

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Synchronous Rectifier Controller with 48V Wide‑Output Support and High‑Power‑Density Capability

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Features

  • Optimized for topologies such as HWLLC and other half‑bridge resonant converters
  • Supports switching frequencies up to 300kHz
  • Lossless VDS‑based SR sensing
  • Supports wide output‑voltage operation up to 48V or higher
  • Supports both high‑side and low‑side synchronous‑rectification topologies
  • Intelligent low‑power management for ultra‑low no‑load operating current
  • 6‑pin SOT23 package for compact system design
Find Other Products in Synchronous Rectifier Controllers
Functional block diagram of the RRW43110 showing internal control blocks, gate driver, protection circuits, sensing elements, and signal flow between the SR controller, power switch, and external connections.
Diagram showing the RRW43110 used as a high-side synchronous rectification power switch for applications with VDS less than 145V. The circuit includes an auxiliary winding that provides the charging path, highlighting gate drive, current flow, and the SR control loop.
Diagram showing the RRW43110 configured as a low-side synchronous rectification power switch for VDS less than 145V. The circuit uses direct VIN LDO charging, illustrating the gate drive path, conduction direction, and SR control behavior.
Diagram showing the RRW43110 operating as a low-side synchronous rectification power switch for applications where VDS exceeds 145V. The design uses direct VIN LDO charging, with emphasis on the gate drive path, switching node behavior, and SR control timing.
Functional block diagram of the RRW43110 showing internal control blocks, gate driver, protection circuits, sensing elements, and signal flow between the SR controller, power switch, and external connections.
Diagram showing the RRW43110 used as a high-side synchronous rectification power switch for applications with VDS less than 145V. The circuit includes an auxiliary winding that provides the charging path, highlighting gate drive, current flow, and the SR control loop.
Diagram showing the RRW43110 configured as a low-side synchronous rectification power switch for VDS less than 145V. The circuit uses direct VIN LDO charging, illustrating the gate drive path, conduction direction, and SR control behavior.
Diagram showing the RRW43110 operating as a low-side synchronous rectification power switch for applications where VDS exceeds 145V. The design uses direct VIN LDO charging, with emphasis on the gate drive path, switching node behavior, and SR control timing.

Description

The RRW43110 is an advanced synchronous rectifier (SR) controller that works with both MOSFET and GaN devices. Using Renesas’ proprietary lossless VDS‑sensing technology, the RRW43110 supports multiple topologies, including half‑wave LLC (HWLLC) and other half‑bridge resonant converters, with switching frequencies up to 300kHz.

The device drives an external power switch to replace the secondary‑side rectifying diode, enabling high efficiency across a wide range of operating conditions. Its versatility makes the RRW43110 suitable for next‑generation high‑power‑density power supplies, supporting designs up to 3W/cm3 and power levels up to 500W.

The RRW43110 accommodates wide output‑voltage operation up to 48V or higher, making it suitable for a broad range of power‑supply applications requiring flexible secondary‑side rectification.

The device also supports low‑power and sleep modes to optimize efficiency at light‑load and no‑load conditions.

Parameters

AttributesValue
FunctionSynchronous Rectifier Controller for High‑Density, Wide-Output Designs

Package Options

Pkg. TypePkg. Dimensions (mm)Lead Count (#)
SOT23-6L0.118 x 0.118 x 0.05126

Application Block Diagrams

Compact AC/DC adapter block diagram leverages GaN FETs to deliver 240W of output power and provides a stable 20V/12A DC output across a global AC input range.
240W AC/DC Power Adapter
Compact 240W GaN AC/DC adapter delivering efficient, stable power for high-performance systems.
Power‑efficient AC/DC adapter block diagram leverages GaN FETs to deliver 270W of power from a wide AC input range and provides an adjustable constant‑voltage DC output.
270W AC/DC Power Adapter
High‑efficiency 270W GaN AC/DC adapter with wide input range and adjustable DC output.
The AC/DC adapter block diagram features a zero‑voltage switching controller and SuperGaN FETs, and the design is compliant with USB PD EPR, delivering 240 W output.
240W USB PD AC/DC Adapter
High-efficiency 240W AC/DC adapter with USB PD 3.2 EPR output.

Additional Applications

  • Rapid‑Charging AC/DC Adapters for Smartphones, Tablets, Notebooks, and Other Portable Devices
  • Power Tools
  • Electric Bicycles
  • Industrial Power
  • Home Appliances
  • Motor Control

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