Renesas ISL8002EVAL1Z

Overview

ISL8002EVAL1Z from Intersil is a demonstration board for evaluating the ISL8002 3A synchronous step-down DC/DC converter in point-of-load applications with 2.7V–5.5V input and 1.8V fixed output. It supports up to 3A continuous load, achieves up to 95% peak efficiency, and uses peak current mode control at 1MHz switching frequency.

For engineers reviewing the ISL8002EVAL1Z datasheet, ISL8002EVAL1Z pinout, ISL8002EVAL1Z application, or ISL8002EVAL1Z equivalent, this board enables rapid validation of thermal performance, transient response, and protection features-including overcurrent, short-circuit, over-temperature, and negative current protection-under real-world load conditions.

Technical Context

The ISL8002EVAL1Z implements a monolithic synchronous buck topology using the ISL8002 IC, which integrates high- and low-side MOSFETs, PWM/PFM control logic, and internal compensation. It operates with peak current mode control to support low-duty-cycle operation down to ~33% at 5.5V_IN → 1.8V_OUT.

Designed for minimal PCB area (<64mm²), the board uses an 8-lead 2mm×2mm DFN package with exposed thermal pad (EPAD), optimized power loop layout, and tightly coupled input/output capacitor placement to suppress EMI and ensure stable regulation under dynamic 3A load steps.

Key Specifications

Availability

ISL8002EVAL1Z is available at Aetrix Electronics and suitable for point-of-load power design, FPGA/microcontroller core voltage evaluation, and industrial embedded DC/DC qualification requiring stable component supply and repeatable test platform access.

Supply support for ISL8002EVAL1Z 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

Intersil Corporation (now part of Renesas Electronics) designs high-performance analog and power management ICs for industrial, computing, and communications systems.

The ISL8002 product line delivers highly integrated, low-quiescent-current synchronous buck regulators targeting space-constrained, thermally sensitive point-of-load applications with strict efficiency and transient requirements.

FAQ

What is the primary function of the ISL8002EVAL1Z demonstration board?

The ISL8002EVAL1Z is a fully assembled evaluation platform for the ISL8002 3A synchronous step-down DC/DC converter. It allows engineers to validate electrical performance-including efficiency, thermal behavior, startup/shutdown sequencing, and protection responses-under real operating conditions without custom PCB development. The ISL8002EVAL1Z provides accessible test points, optimized layout, and fixed 1.8V output to accelerate design-in of the ISL8002 in point-of-load applications.

Does the ISL8002EVAL1Z support adjustable output voltage?

No, the ISL8002EVAL1Z is configured for fixed 1.8V output using a precision resistor divider network (R1/R2). It does not include onboard potentiometers or jumpers for V_OUT adjustment. To evaluate other output voltages, users must modify the feedback resistors per the ISL8002 datasheet guidelines. The ISL8002EVAL1Z is intended for rapid validation of the 1.8V configuration only.

What input voltage range is supported by the ISL8002EVAL1Z?

The ISL8002EVAL1Z supports an input voltage range of 2.7V to 5.5V, matching the operational limits of the ISL8002 IC. This range accommodates common sources including single-cell Li-ion batteries (2.7–4.2V), USB 5V supplies, and regulated 3.3V or 5V system rails. Input voltage must remain within this window to ensure proper regulation and protection functionality on the ISL8002EVAL1Z.

How is thermal performance managed on the ISL8002EVAL1Z?

Thermal performance on the ISL8002EVAL1Z relies on the ISL8002's exposed thermal pad (EPAD), connected to a solid internal ground plane with ≥4 thermal vias. The board layout minimizes power loop area and places input/output capacitors adjacent to the IC. Measured data shows stable operation at 3A continuous load with junction temperature rise <45°C above ambient, assuming still-air conditions and standard 4-layer FR-4 construction.

Can the ISL8002EVAL1Z be used to evaluate PFM vs. PWM modes?

No-the ISL8002EVAL1Z is specifically designed for the ISL8002, which operates exclusively in PWM mode. It is not compatible with the ISL80031 (PFM) or ISL80031A variants. For PFM evaluation, users should select the ISL80031DEMO1Z or ISL80031ADEMO1Z boards. The ISL8002EVAL1Z's control circuitry, feedback network, and component selection are optimized for PWM operation at 1MHz.