Renesas RTKA211230DE0020BU

Overview

RTKA211230DE0020BU from Renesas Electronics is an evaluation board for the RAA211230 24V, 3A synchronous buck regulator with constant-on-time (COT) current-mode control. It operates from 4.5V–24V input, delivers 3.3V/3A output, features integrated 85mΩ high-side and 45mΩ low-side MOSFETs, and supports 500kHz nominal switching frequency with PFM mode at light load.

For engineers reviewing the RTKA211230DE0020BU datasheet, RTKA211230DE0020BU pinout, RTKA211230DE0020BU application, or RTKA211230DE0020BU equivalent, this page provides verified board-level specifications, test point mapping, operating range validation, soft-start timing, UVLO configuration options, and performance graphs under real load conditions.

Technical Context

The RTKA211230DE0020BU implements a fixed 3.3V output configuration using R5 = 33.2kΩ and R6 = 10kΩ feedback divider, yielding V_FB = 0.765V reference with ±2% tolerance. Its internal 0.8ms soft-start and COT control loop are pre-tuned for stability across 4.5V–24V input and 0–3A load.

Board-level protections include VIN UVLO (4.3V threshold, 350mV hysteresis), over-temperature shutdown (OTP), under-voltage protection (UVP) with hiccup mode, and low-side over-current (LSOC) limit - all enabled by default without external components.

Key Specifications

Availability

RTKA211230DE0020BU is available at Aetrix Electronics and suitable for power supply validation, DC-DC converter prototyping, and embedded system power architecture testing requiring stable component supply, traceable sourcing, and rapid evaluation turnaround.

Supply support for RTKA211230DE0020BU 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 is a global semiconductor leader delivering microcontrollers, analog, power, and SoC solutions for automotive, industrial, infrastructure, and IoT applications.

The RTKA211230DE0020BU belongs to Renesas' evaluation board portfolio for its RAA211230 family of integrated buck regulators - designed to accelerate development of compact, high-efficiency 3A power supplies in space-constrained industrial and automotive control units.

FAQ

What is the primary function of the RTKA211230DE0020BU?

The RTKA211230DE0020BU is an evaluation board for the RAA211230 synchronous buck regulator IC. It provides a fully assembled, tested platform to validate 3.3V/3A power delivery, assess efficiency across 4.5V–24V input, verify protection features (UVLO, OTP, UVP), and prototype custom feedback configurations - all without requiring PCB layout or component selection.

Does the RTKA211230DE0020BU support output voltage adjustment?

Yes, the RTKA211230DE0020BU supports output voltage adjustment. Its default 3.3V output is set by R5 = 33.2kΩ and R6 = 10kΩ. To change VOUT, replace R5 and R6 per Equation 2 (VOUT = 0.765 × (1 + R5/R6)) in the manual. The board includes solder pads and routing optimized for resistor swaps without signal integrity compromise.

How is enable/disable controlled on the RTKA211230DE0020BU?

Enable/disable on the RTKA211230DE0020BU is controlled via jumper JP1. With JP1 shorted between pins 2–3, EN connects to VIN through 0Ω R1 for automatic startup. Shorting pins 1–2 grounds EN to disable the regulator. For external logic control, disconnect JP1 and drive EN directly - the pin accepts 1.2V–VIN logic levels compatible with MCU GPIOs.

What test points are provided on the RTKA211230DE0020BU for performance validation?

The RTKA211230DE0020BU includes eight labeled test points: TP1 (VIN), TP2/TP7/TP8 (GND), TP3 (ENABLE), TP4 (VSW), TP5 (VOUTN), and TP6 (VOUT). These allow direct oscilloscope probing of input voltage, switching node dynamics, enable status, and regulated output - enabling efficiency measurement, transient response analysis, and loop stability verification per Figure 6–10 in the manual.

What protection features are implemented on the RTKA211230DE0020BU?

The RTKA211230DE0020BU implements four hardware-enforced protections inherited from the RAA211230 IC: VIN UVLO (4.3V threshold, 350mV hysteresis), over-temperature shutdown (OTP), output under-voltage protection (UVP) with hiccup recovery, and low-side over-current (LSOC) limiting. All are active by default; no configuration jumpers or firmware are required to enable them.