Renesas RTKA223011DR0080BU

Overview

RTKA223011DR0080BU from Renesas Electronics is an offline flyback demonstration board built around the RAA223011 primary-side regulated AC/DC controller in SOIC-8, delivering 12V/400mA (4.7W) from 85–265VAC input with >75% efficiency at full load and integrated overcurrent, short-circuit, brownout, and over-temperature protection.

For engineers reviewing the RTKA223011DR0080BU datasheet, RTKA223011DR0080BU application, RTKA223011DR0080BU evaluation board layout, or RTKA223011DR0080BU alternative development platforms, this board provides a validated two-layer PCB reference design for low-cost, optocoupler-free isolated power conversion in industrial and consumer AC/DC adapters.

Technical Context

The RTKA223011DR0080BU implements primary-side regulation by sampling auxiliary winding voltage to control output without an optocoupler, using the RAA223011 IC with internal 700V MOSFET and up to 33kHz switching frequency. It incorporates FR fusible resistor for inrush limiting and MOV-based line surge suppression.

Designed for universal AC input (85–265VAC, 50/60Hz), the board delivers tightly regulated 12VDC output across load range with <±5% load regulation and meets FCC Part 15 and CISPR22 Class B conducted EMI requirements without external filtering beyond the onboard C1/L1/C3/C2 filter network.

Key Specifications

Availability

RTKA223011DR0080BU is available at Aetrix Electronics and suitable for AC/DC adapter design, industrial sensor power supplies, and smart home device power conversion requiring stable component supply, fast prototyping cycles, and pre-validated safety-compliant layouts.

Supply support for RTKA223011DR0080BU includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Renesas Electronics Corporation is a Japanese semiconductor manufacturer specializing in microcontrollers, analog, power, and timing solutions for automotive, industrial, and enterprise applications.

The RTKA223011DR0080BU belongs to Renesas' RAA223011 evaluation platform family, designed to accelerate development of cost-sensitive, isolated AC/DC converters with primary-side regulation for consumer and industrial power supplies.

FAQ

What is the RTKA223011DR0080BU used for?

The RTKA223011DR0080BU is a demonstration board for the RAA223011 flyback controller, intended to validate 12V/400mA isolated AC/DC conversion from 85–265VAC input. It serves as a reference design for engineers developing low-cost, optocoupler-free power supplies in consumer adapters and industrial sensors. The RTKA223011DR0080BU includes all necessary passive components, transformer, and protection circuitry on a two-layer PCB.

Does the RTKA223011DR0080BU include the RAA223011 IC?

Yes, the RTKA223011DR0080BU board integrates the RAA223011 IC in SOIC-8 package as its core controller. This IC features an integrated 700V MOSFET, primary-side regulation architecture, and built-in protections including overcurrent, short-circuit, brownout, and over-temperature. The RTKA223011DR0080BU uses this IC to enable fully self-contained operation without secondary-side feedback components.

What input and output specifications does the RTKA223011DR0080BU support?

The RTKA223011DR0080BU accepts universal AC input (85–265VAC, 50/60Hz) and delivers a regulated 12VDC output with up to 400mA current (4.7W). Efficiency exceeds 75% at full load and remains between 70–75% at 50% load. Output voltage regulation stays within ±5% across line and load variations, as confirmed in the board's published performance curves.

Is the RTKA223011DR0080BU compliant with EMI standards?

Yes, the RTKA223011DR0080BU meets FCC Part 15 and CISPR22 Class B conducted EMI requirements. This compliance is achieved using the onboard input filter (C1, L1, C2, C3), Y-cap (C5), and MOV (M1), with test results documented for both 120VAC and 230VAC line/neutral configurations. No additional filtering is required to pass standard emissions tests.

Can the RTKA223011DR0080BU be modified for different output voltages?

Yes, the RTKA223011DR0080BU can be adapted for other output voltages by modifying the feedback resistor divider (RFB1/RFB2) and adjusting the transformer turns ratio, per the RAA223011 datasheet guidelines. The board's schematic and transformer design notes (Section 1.3) provide coupling and aux-winding layout recommendations to maintain regulation accuracy. All modifications must be re-validated for safety and EMI compliance.