Renesas RTKA211320DE0030BU

Overview

RTKA211320DE0030BU from Renesas Electronics is an evaluation board for the RAA211320 30V, 2A synchronous buck regulator with Constant On-Time (COT) control. It operates from 4.5V–30V input, delivers 3.3V/2A output, and features PFM mode under light load, 450kHz nominal switching frequency, and integrated high-side (125mΩ) and low-side (75mΩ) MOSFETs - used for rapid prototyping of industrial power supplies.

For engineers reviewing the RTKA211320DE0030BU datasheet, RTKA211320DE0030BU pinout, RTKA211320DE0030BU application, or RTKA211320DE0030BU equivalent, this board enables functional validation of input UVLO (4.3V), soft-start (0.8ms), output voltage accuracy (±2% at 0.765V reference), and protection features including LSOC, OTP, and OUVP with hiccup mode.

Technical Context

The RTKA211320DE0030BU implements current-mode COT control with internal compensation, enabling fast transient response and stable regulation across 4.5V–30V input without external loop compensation. Its 70ns minimum on-time and 225ns minimum off-time support high step-down ratios and wide VIN/VOUT combinations.

This board integrates a TSOT23-6 packaged RAA211320 IC (part number RAA2113204GP3#JA0), configured with fixed 3.3V output via R5=33.2kΩ and R6=10kΩ feedback divider, 6.5μH inductor, and 22μF ceramic output capacitance - optimized for 450kHz operation and PFM efficiency down to light loads.

Key Specifications

Availability

RTKA211320DE0030BU is available at Aetrix Electronics and suitable for industrial power supply validation, embedded system DC-DC design verification, and automotive subsystem prototyping requiring stable component supply and rapid time-to-test.

Supply support for RTKA211320DE0030BU 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 timing solutions for automotive, industrial, and infrastructure markets.

The RAA211320 product line delivers highly integrated, thermally robust buck regulators targeting space-constrained applications needing high efficiency, fast transient response, and minimal external components - especially in motor drives, PLCs, and battery-powered industrial equipment.

FAQ

What is the RTKA211320DE0030BU used for?

The RTKA211320DE0030BU is an evaluation board designed exclusively to assess the performance of the RAA211320 30V, 2A synchronous buck regulator. It enables engineers to validate key parameters including efficiency, load/transient response, soft-start behavior, and protection functionality - without designing a custom PCB. The board is pre-configured for 3.3V/2A output and supports input voltages from 4.5V to 30V.

Does the RTKA211320DE0030BU include the RAA211320 IC?

Yes, the RTKA211320DE0030BU includes one RAA2113204GP3#JA0 IC in a TSOT23-6 package - the exact device it evaluates. This IC integrates high-side (125mΩ) and low-side (75mΩ) MOSFETs, COT control, internal compensation, and full protection circuitry. The board provides test points (TP1–TP8) and jumpers (JP1) to access and modify EN, UVLO, and other control functions.

Can the output voltage of the RTKA211320DE0030BU be changed?

Yes, the output voltage of the RTKA211320DE0030BU can be reprogrammed by replacing feedback resistors R5 and R6. The board ships with R5 = 33.2kΩ and R6 = 10kΩ for 3.3V output, per the formula VOUT = 0.765V × (1 + R5/R6). Adjusting these values allows precise setting of any output between ~0.765V and 30V, subject to RAA211320's operating limits and stability requirements.

What is the switching frequency of the RTKA211320DE0030BU?

The RTKA211320DE0030BU is configured for a nominal switching frequency of 450kHz under continuous conduction mode, as specified in its evaluation board manual. Under light load, the underlying RAA211320 IC automatically enters PFM mode, where frequency varies dynamically to maintain high efficiency - eliminating audible noise and reducing quiescent current to 400μA.

How is enable/disable controlled on the RTKA211320DE0030BU?

Enable/disable on the RTKA211320DE0030BU is controlled via jumper JP1. With JP1 connected between pins 2–3, EN is tied to VIN through a 0Ω resistor (R1), enabling the regulator. Connecting JP1 between pins 1–2 pulls EN to GND, disabling the device. Alternatively, JP1 can remain at 2–3 while R1 is replaced with a voltage-divider network to program custom input UVLO thresholds - per Equation 1 in the manual.