Renesas ISL6228HIEVAL3Z

Overview

ISL6228HIEVAL3Z from Renesas Electronics is an evaluation board designed to demonstrate the performance of the ISL6228 dual-channel PWM controller with Robust Ripple Regulator (R³) technology. It supports configurable Channel-1 output voltages (1.05V or 1.2V), fixed Channel-2 output (1.2V), 270–300 kHz PWM switching, and integrated 20A dynamic-load generators for transient-response validation in high-efficiency DC/DC power delivery applications.

For engineers reviewing the ISL6228HIEVAL3Z datasheet, ISL6228HIEVAL3Z pinout, ISL6228HIEVAL3Z application, or ISL6228HIEVAL3Z equivalent, this board enables rapid characterization of dual-phase synchronous buck regulation - including efficiency, startup/shutdown behavior, CCM/DCM steady-state operation, and load-transient response under real-world VIN (3.3–25 V) and load (up to 20 A per channel) conditions.

Technical Context

The ISL6228HIEVAL3Z implements a complete two-phase synchronous buck converter test platform centered on the ISL6228HRZ QFN-28 controller IC. It integrates HIP2100IBZ high-frequency bridge drivers, IRF7821PBF and IRF7832PBF MOSFETs, IHLP5050FDERR82M01 power chokes, and precision feedback networks with switch-selectable VO1 setpoints.

On-board dynamic-load circuitry applies synchronized 300 µs, 20 A current pulses to both VO1 and VO2 outputs, enabling direct measurement of voltage deviation, recovery time, and loop stability without external equipment. Test points provide access to PHASE1/PHASE2, EN1/EN2, PGOOD1/PGOOD2, and loop compensation nodes (TP5–TP8) for full control-loop analysis.

Key Specifications

Availability

ISL6228HIEVAL3Z is available at Aetrix Electronics and suitable for power supply design validation, DC/DC controller qualification, and transient-response benchmarking requiring stable component supply and documented reference performance data.

Supply support for ISL6228HIEVAL3Z 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 leader delivering microcontrollers, analog, power, and SoC solutions for automotive, industrial, infrastructure, and IoT applications.

The ISL6228HIEVAL3Z belongs to Renesas' high-performance power management evaluation platform family, engineered specifically to accelerate development of multi-rail, high-current VRMs for notebook, server, and FPGA power systems.

FAQ

What is the primary function of the ISL6228HIEVAL3Z evaluation board?

The ISL6228HIEVAL3Z evaluation board is a fully assembled, tested platform that demonstrates the ISL6228 dual-channel PWM controller's operation in a synchronous buck configuration. It enables engineers to validate key performance metrics-including efficiency, startup behavior, steady-state CCM/DCM operation, and load-transient response-without designing custom hardware. The board directly implements the ISL6228HRZ controller with supporting power stages, feedback networks, and dynamic-load circuitry, making ISL6228HIEVAL3Z ideal for rapid prototyping and specification verification.

Which controller IC does the ISL6228HIEVAL3Z evaluate, and what package does it use?

The ISL6228HIEVAL3Z evaluates the ISL6228HRZ, a dual-channel PWM controller fabricated by Renesas Electronics. This controller is mounted in a 28-pin QFN package (5 mm × 5 mm, 0.5 mm pitch) and features Intersil's Robust Ripple Regulator (R³) topology for improved transient response and stability. The ISL6228HIEVAL3Z provides full access to all controller pins via test points and interface connectors, allowing direct probing and signal injection during characterization of the ISL6228HRZ device.

How are output voltages configured on the ISL6228HIEVAL3Z?

Channel-1 output voltage (VO1) on the ISL6228HIEVAL3Z is configurable between 1.05 V and 1.2 V using switch S5: OFF sets VO1 = 1.05 V (via R15 and R23); ON parallels R49 with R15 to yield VO1 = 1.2 V. Channel-2 output (VO2) is fixed at 1.2 V by its dedicated feedback resistor network. Both outputs are accessible via screw terminals (J7–J10) and precision test points (TP11–TP14), supporting accurate load regulation and margining tests under ISL6228HIEVAL3Z operating conditions.

Does the ISL6228HIEVAL3Z include built-in dynamic load generation, and how is it controlled?

Yes, the ISL6228HIEVAL3Z integrates independent dynamic-load generators for both channels. Switch S4 enables the Channel-1 load (20 A, 300 µs pulse across VO1–GND); S3 enables the Channel-2 load (20 A, 300 µs pulse across VO2–GND). These circuits operate from a +12 V input (TP15/TP16) and allow repeatable, synchronized transient testing without external electronic loads. Current waveforms are accessible at J11 (Channel-1) and J12 (Channel-2), enabling direct oscilloscope measurement of load-step response on ISL6228HIEVAL3Z.

What test equipment is recommended to fully utilize the ISL6228HIEVAL3Z?

Renesas specifies the following minimum test setup for ISL6228HIEVAL3Z: two adjustable 25 V/3 A power supplies (for VIN1/VIN2), one fixed 5 V/100 mA supply (for VCC), one fixed 12 V/100 mA supply (for dynamic-load bias), one adjustable 20 A constant-current electronic load (optional, for extended load testing), a digital voltmeter, and a four-channel oscilloscope. Critical signals-including PHASE1/PHASE2 (J4/J3), VO1/VO2 (J6/J5), and EN1/EN2 (TP17/TP19)-are routed to labeled test points and scope sockets for precise timing and waveform analysis during ISL6228HIEVAL3Z evaluation.