AC/DC & Isolated DC/DC Converters

Simplify Your Power Designs

Renesas offers a robust portfolio of PWM controllers engineered for highly efficient DC/DC and AC/DC power supplies that require isolated transformers. With a mix of single- and double-ended isolated controllers and advanced ZVS full-bridge options, our converter product deliver an optimal balance of performance, reliability, and precision for demanding applications like off-line AC/DC systems and telecom-input DC/DC converters.

Compact & Versatile Solutions

Our AC/DC solutions feature the smallest packages in the market, making them ideal for space-constrained designs while ensuring powerful performance.

Advanced Protection & Control

Our unique output current sensing and brick-wall overcurrent protection features safeguard your system by enhancing reliability and stability under heavy workloads.

Optimized Efficiency with ZVS Control

Innovative full-bridge zero voltage switching (ZVS) control and adjustable dead time management minimize energy loss, boosting the efficiency of power conversion systems.

Flexible Applications Across Industries

Designed for diverse use cases, Renesas solutions power AC/DC supplies, brick converters, power factor correction (PFC) boards, and adapters with unmatched scalability and efficiency.

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Product Portfolio

Flyback & Forward Controllers

Current-mode PWM controllers for flyback, forward, and general switch-mode power supply applications

Non-Isolated AC/DC Buck Converters

700V non-isolated AC/DC regulators with ultra-low standby power and low EMI for energy-efficient designs

Power Factor Correction (PFC) Controllers

PFC controllers for AC/DC power systems up to 2kW, ensuring high efficiency over universal line inputs

Synchronous Rectifier Controllers

65W+ synchronous rectifier controllers enabling chargers 30% smaller than traditional brick adapters

Half‑Wave LLC Power

The GaN‑based HWLLC platform delivers 500W and higher performance for IoT, industrial, and infrastructure systems. Its wide input and output range scales an ultra‑efficient, compact architecture from 100W to 500W for lighting, motor control, and next‑generation fast chargers. By avoiding the size, heat, and efficiency limits of legacy designs, it enables smaller 240W USB PD EPR adapters and replaces bulky brick chargers.

RRW11011: 500W AC/DC Primary-Side Digital Controller for Interleaved PFC and Half-Wave LLC RRW30120: USB PD 3.2 EPR Controller with 48V Output and Multi‑Port Adapter Support RRW43110: Synchronous Rectifier Controller with 48V Wide‑Output Support and High‑Power‑Density Capability RRW40120: 600V Half‑Bridge Gate Driver for High‑Side and Low‑Side Switching 300W Lighting Power & Control Platform

240W USB PD Adapter

This HWLLC‑based AC/DC solution enables designers to move beyond 100W USB‑C adapters and adopt 240W USB PD 3.2 EPR charging for smaller, higher power chargers in smartphones, laptops, and gaming systems. Our compact architecture combines ultra‑low standby power control with advanced Renesas SuperGaN^® D‑mode technology to accelerate development of efficient, high‑power‑density adapters.

240W HWLLC USB PD 3.2 EPR Evaluation Board 240W AC/DC Power Adapter