Renesas RTKA210040DR0000BU

Overview

RTKA210040DR0000BU from Renesas Electronics is a 1×1 inch, 4-layer FR4 demonstration board featuring the RAA210040 synchronous step-down power module. It delivers up to 4A continuous output at 1.2V from a 2.7–5.5V input, supports 500kHz–4MHz programmable switching frequency, and provides ±1.5% output voltage accuracy over line, load, and temperature for space-constrained DC/DC conversion.

For engineers reviewing the RTKA210040DR0000BU datasheet, RTKA210040DR0000BU pinout, RTKA210040DR0000BU application, or RTKA210040DR0000BU equivalent, this board enables rapid validation of RAA210040 performance-including prebias start-up, external frequency synchronization, PGOOD signaling, and thermal derating behavior-under real-world load transients and input conditions.

Technical Context

The RTKA210040DR0000BU implements peak current mode PWM control with internal compensation, enabling fast transient response and stable regulation across 0–4A loads. Its design integrates dedicated EN and PGOOD pins, SYNC input for external clock injection up to 4MHz, and FB-based adjustable output down to 0.6V.

Thermal management relies on 2oz copper layers and optimized layout with separate SGND/PGND planes connected at a single point. The board supports 100% duty cycle operation and includes UVLO, overcurrent (positive/negative), overvoltage, and overtemperature protections inherited from the RAA210040 module.

Key Specifications

Availability

RTKA210040DR0000BU is available at Aetrix Electronics and suitable for power module evaluation, DC/DC reference design validation, and embedded system bring-up requiring stable component supply and repeatable test conditions.

Supply support for RTKA210040DR0000BU 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 manufacturer headquartered in Tokyo, Japan, specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and infrastructure markets.

The RTKA210040DR0000BU belongs to Renesas' power module evaluation platform family, designed to accelerate adoption of integrated DC/DC modules like the RAA210040 in compact, high-efficiency power delivery applications.

FAQ

What is the primary function of the RTKA210040DR0000BU?

The RTKA210040DR0000BU is a demonstration board-not an IC or discrete component-that showcases the RAA210040 synchronous step-down power module. It provides a fully assembled, tested, and characterized platform to evaluate electrical performance, thermal behavior, and system integration features including enable control, power-good signaling, and external frequency synchronization. Engineers use the RTKA210040DR0000BU to validate designs before committing to custom PCB layouts.

Does the RTKA210040DR0000BU include the RAA210040 power module?

Yes, the RTKA210040DR0000BU demonstration board integrates one RAA210040 power module (U1, 10-lead dual-flat laminate package) as its core active component. All supporting circuitry-including input/output capacitors, feedback resistors, SYNC pull-up, soft-start timing components, and test points-is pre-populated to match the recommended design guidelines in the RAA210040 datasheet and Design Guide Matrix.

Can the output voltage of the RTKA210040DR0000BU be adjusted?

Yes, the RTKA210040DR0000BU's output voltage is adjustable from 0.6V to 5V using the FB pin and external resistor divider (R10/R11). By default, it is configured for 1.2V output using two 100kΩ resistors. To change VOUT, users replace R10 and R11 with values specified in the RAA210040 Design Guide Matrix or Equation 2 in the RAA210040 datasheet-enabling precise regulation for diverse SoC, FPGA, or ASIC core rails.

How is switching frequency set on the RTKA210040DR0000BU?

Switching frequency on the RTKA210040DR0000BU is set either by populating resistor R2 (default 169kΩ for 1.2MHz) or by applying an external clock signal to the SYNC pin. When using SYNC, the external frequency must remain within ±25% of the R2-programmed frequency to ensure stable operation. This dual-mode configuration allows designers to optimize EMI performance or synchronize multiple converters in a system.

What protection features does the RTKA210040DR0000BU demonstrate?

The RTKA210040DR0000BU demonstrates all protection features of the underlying RAA210040 module: undervoltage lockout (UVLO), overcurrent protection (OCP) for both positive and negative current directions, overvoltage protection (OVP), and overtemperature shutdown (OTP). These are implemented internally and verified during board-level testing per the RAA210040 datasheet, ensuring safe operation under fault conditions without external circuitry.