Renesas RTKA223011DE0020BU

Overview

RTKA223011DE0020BU from Renesas Electronics is an evaluation board for the RAA223011 7-lead SOIC high-voltage buck regulator IC, enabling non-isolated AC/DC conversion from 85–265VAC to 12VDC at up to 300mA output current. It implements a high-side float-switching topology with up to 30kHz switching frequency and includes built-in overcurrent, short-circuit, brownout, and over-temperature protection.

For engineers reviewing the RTKA223011DE0020BU datasheet, RTKA223011DE0020BU application, RTKA223011DE0020BU pinout, or RTKA223011DE0020BU equivalent, this page provides verified board-level specifications, thermal and efficiency performance data, protection features, layout guidance, and design context for universal-input offline power supply development.

Technical Context

The RTKA223011DE0020BU evaluation board implements a single-stage, half-wave rectified, high-side floating buck topology using the RAA223011 IC. Input filtering uses C1/L1/C2; output stage comprises L2/D2/COUT; feedback network includes D3/RFB1/RFB2/CFB1/CFB2; and VCC biasing is provided via D4/R2/CVCC.

It operates across -45°C to +65°C ambient, delivers 3.96W max output power, achieves >68% efficiency at full load (300mA), and maintains no-load power as low as 6.7mW at 120VAC - meeting stringent standby energy requirements for consumer and industrial applications.

Key Specifications

Availability

RTKA223011DE0020BU is available at Aetrix Electronics and suitable for offline AC/DC power supply evaluation, universal-input adapter reference design validation, and low-power IoT device power architecture prototyping requiring stable component supply and documented thermal and efficiency performance.

Supply support for RTKA223011DE0020BU 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 connectivity solutions for automotive, industrial, and IoT markets.

The RTKA223011DE0020BU belongs to Renesas' AC/DC evaluation board product line, designed to accelerate development of compact, high-efficiency, low-standby-power offline power supplies using their proprietary high-voltage buck regulators.

FAQ

What is the primary function of the RTKA223011DE0020BU evaluation board?

The RTKA223011DE0020BU evaluation board demonstrates and validates the RAA223011 high-voltage buck regulator IC in a complete, ready-to-test offline AC/DC power supply. It converts universal AC input (85–265VAC) to a regulated 12VDC output at up to 300mA, supporting rapid prototyping of cost-sensitive, low-noise, low-standby-power power architectures. The RTKA223011DE0020BU includes all necessary passive components, protection circuitry, and test points for performance characterization.

Does the RTKA223011DE0020BU support full-wave rectification?

The RTKA223011DE0020BU uses a single-diode half-wave rectifier (D1 and D7) by default but includes footprint provisions for an optional full-bridge rectifier. This allows designers to evaluate trade-offs between component count, conduction loss, and EMI when adapting the RTKA223011DE0020BU design for higher efficiency or lower ripple in final products.

What protections are implemented on the RTKA223011DE0020BU board?

The RTKA223011DE0020BU integrates overcurrent, short-circuit, input brownout, and over-temperature protections - all enabled by the underlying RAA223011 IC and supported by discrete components such as FR (fusible resistor) and thermal monitoring paths. These protections ensure safe operation during abnormal conditions without external supervision, making the RTKA223011DE0020BU suitable for unattended evaluation and reliability testing.

Can the RTKA223011DE0020BU be used to evaluate different output voltages?

No - the RTKA223011DE0020BU is configured for a fixed 12VDC output via its RFB1/RFB2 feedback divider. To evaluate alternate output voltages, users must modify the feedback resistor network per the RAA223011 datasheet guidelines. The RTKA223011DE0020BU schematic and BOM provide reference values and footprints, but the board itself is not field-adjustable for voltage setting.

Is the RTKA223011DE0020BU compatible with automated optical inspection (AOI) or reflow processes?

The RTKA223011DE0020BU uses standard surface-mount and through-hole components with industry-common packages (0603, 0805, DO-41, radial electrolytics, SMB, SOIC-7), all rated for standard lead-free reflow profiles. Its single-sided layout and clear silkscreen facilitate AOI setup and manual or automated assembly verification. No special process deviations are required for the RTKA223011DE0020BU board itself.