Renesas ISL80019EVAL1Z

Overview

ISL80019EVAL1Z from Intersil is an evaluation board designed to demonstrate the ISL80019 1.5A, 1MHz synchronous buck regulator in its 2mm×2mm TDFN package. It supports input voltages from 2.7V to 5.5V, delivers adjustable output down to 0.6V, and enables validation of PFM/PWM mode selection, internal/external compensation, and thermal performance under load. The board is used for rapid prototyping of point-of-load power supplies in FPGA, set-top box, and LCD panel applications.

For engineers reviewing the ISL80019EVAL1Z datasheet, ISL80019EVAL1Z pinout, ISL80019EVAL1Z application, or ISL80019EVAL1Z equivalent, this page provides verified layout guidance, measured efficiency curves (up to 95% at 2A), startup/shutdown timing waveforms, load transient response data, and direct reference to the ISL80019 IC's electrical specifications - all critical for power integrity validation and design-in readiness.

Technical Context

The ISL80019EVAL1Z implements the ISL80019 monolithic synchronous buck converter using peak current-mode control with selectable 1MHz switching frequency. It integrates low-rDS(ON) PMOS/NMOS power FETs (117mΩ/86mΩ at 5V), eliminates boot capacitor requirements, and supports 100% duty-cycle operation at dropout of 200mV @ 2A.

It validates dual operating modes: PFM for ultra-low quiescent current (35µA typical) at light loads and PWM for low-noise, fixed-frequency regulation. Protection features include overcurrent (2.5A typ), thermal shutdown (150°C), UVLO (2.7V rising), and VOUT overvoltage/undervoltage monitoring via the FB pin.

Key Specifications

Availability

ISL80019EVAL1Z is available at Aetrix Electronics and suitable for FPGA power sequencing, LCD bias supply validation, and embedded processor core rail development requiring stable component supply and fast-turn evaluation support.

Supply support for ISL80019EVAL1Z 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 (now part of Renesas Electronics) is a semiconductor company specializing in precision analog and power management ICs for industrial, computing, and communications markets.

The ISL80019EVAL1Z belongs to Intersil's compact synchronous buck regulator product line, engineered to accelerate design-in of high-efficiency, space-constrained DC/DC converters for battery-powered and thermally sensitive applications.

FAQ

What is the primary function of the ISL80019EVAL1Z evaluation board?

The ISL80019EVAL1Z evaluation board is a fully assembled and tested platform for validating the ISL80019 1.5A, 1MHz synchronous buck regulator. It enables engineers to evaluate voltage regulation accuracy, efficiency across load and input conditions, PFM/PWM mode behavior, transient response, and thermal performance without custom PCB design. All key signals - EN, MODE, COMP, FB, PHASE, and PG - are accessible for probing and configuration.

Does the ISL80019EVAL1Z support both internal and external compensation?

Yes, the ISL80019EVAL1Z supports both compensation methods. By default, COMP is tied to VIN for internal compensation using the integrated 27pF/200kΩ network. To use external compensation, the onboard jumper is removed and an RC network (e.g., 10kΩ + 1nF) is connected from COMP to GND - matching the design flexibility documented in the ISL80019 datasheet (FN7888, p.20).

What input and output capacitors are populated on the ISL80019EVAL1Z board?

The ISL80019EVAL1Z uses three 22µF X5R ceramic capacitors (C1, C5, C6) at the output and a 10µF ceramic capacitor at VIN, per the ISL80019 recommended design (FN7888, p.4 & p.19). These values align with Table 2 in the datasheet for 0.8V–3.3V outputs and ensure stable operation with low ESR and sufficient ripple current rating.

Can the ISL80019EVAL1Z be used to evaluate the ISL80019A variant?

No - the ISL80019EVAL1Z is specifically configured for the ISL80019 (1MHz version). The ISL80019A operates at 2MHz and requires different inductor and compensation values due to higher switching frequency. While the physical layout is identical (same 2mm×2mm TDFN package), the evaluation board's component values - including the 1.2µH inductor and internal compensation network - are optimized for 1MHz operation per FN7888 Table 2 and Figure 1.

Where can I find the schematic and bill of materials for the ISL80019EVAL1Z?

The complete schematic, BOM, and layout files for the ISL80019EVAL1Z are provided in the official ISL80019 datasheet (FN7888), specifically in Figure 1 (Typical Application Circuit), Table 2 (Component Value Selection), and Page 23 (Package Outline Drawing). No separate user guide is required - all design resources are consolidated in the publicly available datasheet revision 4.00.