Renesas ISL8033AEVAL1Z

Overview

ISL8033AEVAL1Z from Renesas Electronics is a dual-channel 2.25MHz, 3A per channel synchronous buck regulator evaluation board designed to demonstrate the ISL8033A DC/DC converter in point-of-load applications with 2.85V–6V input. It delivers preset 1.8V outputs per channel, supports adjustable output (0.8V–3.3V), and features external synchronization up to 6MHz, 180° out-of-phase operation, and power-good signaling.

For engineers reviewing the ISL8033AEVAL1Z datasheet, ISL8033AEVAL1Z pinout, ISL8033AEVAL1Z application, or ISL8033AEVAL1Z equivalent, this board enables rapid validation of high-efficiency, low-quiescent-current dual-buck performance in space-constrained industrial and embedded power systems.

Technical Context

The ISL8033AEVAL1Z implements the ISL8033A IC in a fully assembled, tested layout using FDV0630-R60M 0.6µH inductors and TDK C2012X5R0J226M 22µF input/output capacitors. It supports both PWM and PFM modes, includes logic-controlled shutdown (8µA), and provides soft-start (1.5ms) and soft-stop discharge functionality.

Board-level design incorporates dedicated test points for COMP, FB1/FB2, EN1/EN2, PG1/PG2, SYNC, and LX nodes, with short trace routing for feedback and compensation paths to preserve stability and transient response fidelity per the ISL8033A's internal current-mode control architecture.

Key Specifications

Availability

ISL8033AEVAL1Z is available at Aetrix Electronics and suitable for industrial automation, FPGA power delivery, and telecom infrastructure requiring stable component supply, fast prototyping cycles, and validated reference designs for high-density DC/DC conversion.

Supply support for ISL8033AEVAL1Z 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 ISL8033A product line targets low-quiescent-current, high-efficiency point-of-load regulation in space- and thermal-constrained systems, emphasizing fast transient response and flexible synchronization for multi-rail power architectures.

FAQ

What is the primary function of the ISL8033AEVAL1Z evaluation board?

The ISL8033AEVAL1Z evaluation board is a fully assembled platform designed to demonstrate and validate the performance of the ISL8033A dual 3A synchronous buck regulator. It enables engineers to evaluate efficiency, transient response, synchronization capability, and protection features under real-world load conditions without custom PCB development. The board ships with 1.8V outputs but supports adjustment from 0.8V to 3.3V, making ISL8033AEVAL1Z ideal for rapid power architecture verification in industrial and embedded applications.

How does the ISL8033AEVAL1Z differ from the ISL8033EVAL1Z?

The ISL8033AEVAL1Z uses the ISL8033A IC with a 2.25MHz switching frequency and FDV0630-R60M 0.6µH inductors, while the ISL8033EVAL1Z uses the ISL8033 IC with 1MHz operation and DR73-1R5-R 1.5µH inductors. Both share identical board layout and test point structure, but ISL8033AEVAL1Z targets higher-frequency, smaller-output-filter designs where reduced inductor size and faster loop response are critical - such as dense FPGA or ASIC core rail applications.

Can the ISL8033AEVAL1Z be synchronized to an external clock source?

Yes, the ISL8033AEVAL1Z supports external synchronization up to 6MHz via its SYNC pin, which accepts negative-edge-triggered signals. This allows precise timing alignment with system clocks or other regulators to minimize beat frequencies and EMI. The board includes a dedicated test point for SYNC, and the user manual specifies that the pin must not be left floating or tied low - confirming robust implementation of ISL8033AEVAL1Z's synchronization interface for noise-sensitive applications.

What output voltage options are supported on the ISL8033AEVAL1Z?

The ISL8033AEVAL1Z is factory-configured for 1.8V on both VOUT1 and VOUT2, but supports adjustable output voltages from 0.8V to 3.3V by modifying the feedback resistors R2/R5 and R3/R6. Equation 1 in the AN1606 manual defines the exact resistor ratio required, and the bill of materials confirms 100kΩ default values for R3/R6 - enabling straightforward reconfiguration of ISL8033AEVAL1Z for diverse core, I/O, or memory rail requirements without hardware redesign.

Does the ISL8033AEVAL1Z include power-good monitoring and fault reporting?

Yes, the ISL8033AEVAL1Z provides dedicated PG1 and PG2 open-drain power-good outputs with 1ms delay, routed to accessible test points and LEDs. These signals assert high when each output reaches 90% of its nominal voltage and remain active during normal operation - giving system controllers reliable sequencing and health monitoring. This feature is integral to ISL8033AEVAL1Z's role in validating robust power-up behavior for mission-critical embedded systems.