Renesas ISL6754DBEVAL1Z

Overview

ISL6754DBEVAL1Z from Intersil (now Renesas) is an evaluation daughter board designed to demonstrate and validate the ISL6754 ZVS full-bridge PWM controller IC in real-world power converter designs. It supports adjustable synchronous rectifier timing, voltage- or current-mode control, average current monitoring, and resonant delay tuning - enabling rapid prototyping of telecom, datacom, and industrial DC/DC converters operating up to 2 MHz.

For engineers reviewing the ISL6754DBEVAL1Z datasheet, ISL6754DBEVAL1Z application notes, ISL6754DBEVAL1Z hardware setup, or ISL6754DBEVAL1Z compatibility with ISL6754-based reference designs, this board provides a validated platform for evaluating ZVS operation, SR timing optimization, soft-start behavior, and dual-loop (voltage + average current) control implementation without custom PCB development.

Technical Context

The ISL6754DBEVAL1Z implements the ISL6754 controller in a fully assembled, tested configuration featuring 20-pin QSOP socketing, oscillator timing components (RTD, CT), synchronous rectifier gate drive interface points, and configurable feedback networks for both voltage and average current loops. It includes dedicated test points for CS, RAMP, VADJ, RESDEL, and IOUT signals to support real-time waveform analysis and loop tuning.

This daughter board is explicitly intended for use with the ISL6754EVAL1Z main evaluation platform (per AN1619), forming a complete ZVS full-bridge evaluation system. It does not contain active power stage FETs or magnetics - those reside on the base board - and instead focuses on precise control signal generation, timing adjustment, and current sensing interface validation.

Key Specifications

Availability

ISL6754DBEVAL1Z is available at Aetrix Electronics and suitable for telecom power supply development, datacom DC/DC converter validation, and industrial ZVS full-bridge design verification requiring stable component supply and documented reference hardware.

Supply support for ISL6754DBEVAL1Z 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 (formerly Intersil) is a global semiconductor leader specializing in analog, power, and embedded processing solutions for high-reliability industrial, automotive, and communications systems.

The ISL6754DBEVAL1Z belongs to Renesas' high-performance ZVS full-bridge controller evaluation platform family, engineered to accelerate adoption of zero-voltage switching topologies in high-efficiency, high-density power supplies.

FAQ

What is the primary function of the ISL6754DBEVAL1Z evaluation board?

The ISL6754DBEVAL1Z is a daughter board designed exclusively to evaluate the ISL6754 ZVS full-bridge PWM controller IC. It provides physical access to all key control signals - including RESDEL, VADJ, CT, RTD, IOUT, and CS - and enables hands-on validation of synchronous rectifier timing, average current limiting, soft-start sequencing, and dual-mode control loop behavior. The ISL6754DBEVAL1Z must be used with the ISL6754EVAL1Z main evaluation board to form a complete functional system.

Does the ISL6754DBEVAL1Z include power MOSFETs or transformers?

No, the ISL6754DBEVAL1Z does not include power MOSFETs, transformers, or output magnetics. It is a control-only daughter board that interfaces directly with the ISL6754EVAL1Z base board, which houses the power stage components. The ISL6754DBEVAL1Z focuses solely on signal conditioning, timing configuration, and measurement interface for the ISL6754 controller.

Can the ISL6754DBEVAL1Z be used independently without the ISL6754EVAL1Z base board?

No - the ISL6754DBEVAL1Z is not a standalone evaluation board. Per AN1619 and the FN6754 datasheet, it is mechanically and electrically designed as a plug-in daughter card for the ISL6754EVAL1Z main board. It lacks power input circuitry, gate drivers, and isolation components required for autonomous operation. Using the ISL6754DBEVAL1Z without the base board will not enable functional ZVS full-bridge operation.

Which application notes specifically support the ISL6754DBEVAL1Z?

The ISL6754DBEVAL1Z is covered in two official Renesas application notes: AN1603 ("ISL6752/54EVAL1Z ZVS DC/DC Power Supply with Synchronous Rectifiers User Guide") and AN1619 ("Designing with ISL6752DBEVAL1Z and ISL6754DBEVAL1Z Control Cards"). These documents detail hardware setup, signal routing, test procedures, and expected waveforms when using the ISL6754DBEVAL1Z with its companion base board.

How does the ISL6754DBEVAL1Z support average current mode control evaluation?

The ISL6754DBEVAL1Z provides direct access to the IOUT pin - the 4× buffered output of the ISL6754's sample-and-hold average current circuit - along with associated RC filtering components and FB/VERR interface points. This allows engineers to configure and validate average current limiting, current sharing, and average current mode control loops using the internal error amplifier, as described in the ISL6754 datasheet Section "Average Current Monitoring and Soft-Start" and Figure 10.