Renesas RTKA223012DR0010BU

Overview

RTKA223012DR0010BU from Renesas Electronics is a demonstration board featuring the RAA223012 high-voltage buck regulator in SO8 package, designed for non-isolated AC/DC conversion from 85–265VAC to 5VDC at up to 150mA. It integrates overcurrent, short-circuit, brownout, and over-temperature protection, and achieves <10mW no-load power at 230VAC with EN55022/CISPR 22 EMI pre-compliance.

For engineers reviewing the RTKA223012DR0010BU datasheet, RTKA223012DR0010BU pinout, RTKA223012DR0010BU application, or RTKA223012DR0010BU equivalent, this board serves as a validated reference design for low-cost, compact, high-efficiency offline power supplies targeting IoT sensors, smart meters, and industrial controls requiring universal AC input and ultra-low standby consumption.

Technical Context

The RTKA223012DR0010BU implements a high-side floating buck topology using half-wave rectification, enabling direct connection to universal AC mains without an isolation transformer. Its control IC (RAA223012) integrates a 700V MOSFET and operates in discontinuous conduction mode (DCM) for stable regulation across wide input voltage and load ranges.

Board-level protection includes fusible resistor FR for inrush limiting and surge absorption, coupled with DC buffer capacitors C1/C2 and input filter L1/C1/C2 to meet conducted EMI limits. Feedback network RFB1/RFB2 and CFB1/CFB2 set precise 5V output with ±3% load regulation from 10% to 100% load.

Key Specifications

Availability

RTKA223012DR0010BU is available at Aetrix Electronics and suitable for IoT edge sensors, smart home controllers, and industrial status indicators requiring stable component supply, rapid prototyping validation, and pre-verified EMI performance.

Supply support for RTKA223012DR0010BU 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 global semiconductor leader specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

The RAA223012 product line delivers highly integrated offline buck regulators targeting cost-sensitive, low-power AC/DC applications where simplicity, reliability, and regulatory compliance are critical.

FAQ

What is the primary function of the RTKA223012DR0010BU?

The RTKA223012DR0010BU is a fully assembled demonstration board that implements a non-isolated 5V/150mA buck converter using the RAA223012 IC in SO8 package. It converts universal AC input (85–265VAC) directly to regulated DC output without a transformer, serving as a reference design for low-cost offline power supplies. The RTKA223012DR0010BU includes all necessary passive components, protection circuitry, and layout optimized for EMI and thermal performance.

Does the RTKA223012DR0010BU include the RAA223012 IC?

Yes, the RTKA223012DR0010BU integrates the RAA223012 high-voltage buck regulator IC in SO8 package (Renesas part number RAA2230124GSP#AA0). This IC combines a 700V power MOSFET, controller, and protection features on a single die. The RTKA223012DR0010BU board is specifically configured to demonstrate its operation under real-world AC line conditions with full protection and efficiency validation.

Can the RTKA223012DR0010BU be used for production designs?

The RTKA223012DR0010BU is intended as a demonstration and evaluation platform-not a certified production module. However, its schematics, BOM, and layout are publicly documented in the X0119847 manual and serve as a validated starting point for production designs. Engineers must perform full safety, EMI, and reliability testing when adapting the RTKA223012DR0010BU reference design into end equipment.

What protection features are implemented on the RTKA223012DR0010BU?

The RTKA223012DR0010BU implements overcurrent protection via fusible resistor FR, short-circuit protection through the RAA223012's cycle-by-cycle current limiting, input brownout detection, and over-temperature shutdown. These protections are active during normal operation and verified per the board's functional description and test data in the X0119847 manual. The RTKA223012DR0010BU also includes input surge absorption using FR, C1, and C2 to withstand 1.5kV per IEC61000-4-5.

How does the RTKA223012DR0010BU achieve <10mW standby power?

The RTKA223012DR0010BU achieves <10mW no-load power through deep-sleep mode activation in the RAA223012 IC, combined with optimized biasing (D4/R2 optional), minimal leakage paths, and low-loss passive selection (e.g., low-ESR electrolytics and ceramic caps). Measured data shows 8.5mW at 230VAC/50Hz, meeting stringent energy efficiency standards. This performance is intrinsic to the RTKA223012DR0010BU board configuration and confirmed in Table 1 of the X0119847 manual.