Renesas ISL6526AEVAL2

Overview

ISL6526AEVAL2 from Intersil is a QFN-package evaluation board for the ISL6526A 600kHz synchronous buck PWM controller, designed to validate DC/DC stepdown converter designs driving N-channel MOSFETs with voltage-mode control, 0.8V reference, ±1.5% output regulation, and lossless rDS(ON)-based overcurrent protection in industrial temperature range (–40°C to +85°C).

For engineers reviewing the ISL6526AEVAL2 datasheet, ISL6526AEVAL2 pinout, ISL6526AEVAL2 application, or ISL6526AEVAL2 equivalent, this board enables rapid prototyping of high-efficiency, fast-transient 3.3V/5V-input power supplies for microprocessors, DDR termination, and embedded subsystems - with full access to COMP, FB, UGATE, LGATE, PHASE, OCSET, and ENABLE signals for loop tuning and fault analysis.

Technical Context

The ISL6526AEVAL2 implements a complete test platform for the ISL6526A IC, supporting fixed-frequency (600kHz) voltage-mode PWM control with internal 15MHz gain-bandwidth error amplifier and 6V/µs slew rate. It provides direct access to all critical analog nodes including CPVOUT, CPGND, CT1/CT2, BOOT, and VCC for bias validation and charge-pump stability assessment.

Board-level design incorporates layout-optimized power paths: low-inductance PHASE node routing, dedicated ground plane vias for GND and CPGND, short gate-drive traces to UGATE/LGATE, and decoupling capacitors placed per datasheet recommendations (CIN, CBOOT, CBULK, CHF) to support accurate transient response measurement and hiccup-mode overcurrent testing.

Key Specifications

Availability

ISL6526AEVAL2 is available at Aetrix Electronics and suitable for microprocessor power validation, DDR bus termination supply development, and industrial embedded power subsystem qualification requiring stable component supply and documented reference design fidelity.

Supply support for ISL6526AEVAL2 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 high-performance analog and power management ICs for computing, communications, and industrial applications.

The ISL6526A product line delivers single-phase synchronous buck controllers optimized for high-efficiency, fast-transient point-of-load regulation in space-constrained systems - targeting microprocessor core, memory, and subsystem power rails.

FAQ

What is the primary function of the ISL6526AEVAL2 evaluation board?

The ISL6526AEVAL2 evaluation board is a fully assembled and tested hardware platform designed specifically to evaluate the ISL6526A 600kHz synchronous buck PWM controller in its 16-lead QFN package. It enables engineers to validate voltage-mode control loop performance, measure transient response, verify rDS(ON)-based overcurrent protection behavior, and optimize compensation networks using real-world component values and layout practices defined in the ISL6526A datasheet (FN9055).

Does the ISL6526AEVAL2 support both 3.3V and 5V input configurations?

Yes, the ISL6526AEVAL2 supports both 3.3V and 5V input operation as confirmed by the "Typical Application – 3.3V Input" and "Typical Application – 5V Input" schematics on page 4 of the ISL6526A datasheet (FN9055). The board includes jumper-selectable input voltage routing and component footprints matching those reference designs, allowing immediate validation of converter efficiency, regulation accuracy, and thermal performance under either supply condition.

Can the ISL6526AEVAL2 be used to test the ISL6526 (300kHz version) as well?

No - the ISL6526AEVAL2 is specifically configured for the ISL6526A (600kHz oscillator), as indicated by its part number suffix "A" and alignment with the ISL6526A's electrical specifications. While the ISL6526 and ISL6526A share identical pinouts and functional blocks, the oscillator frequency difference (300kHz vs. 600kHz) affects external component selection (e.g., CT1/CT2 capacitor values, output inductor sizing). Using ISL6526AEVAL2 with the ISL6526 may yield suboptimal performance or instability without component rework.

What key signals are accessible on the ISL6526AEVAL2 for probing and tuning?

The ISL6526AEVAL2 provides test points and solder pads for all critical analog and control signals: COMP, FB, UGATE, LGATE, PHASE, OCSET, ENABLE, BOOT, VCC, CPVOUT, CPGND, CT1, CT2, and GND. These allow direct oscilloscope probing of error amplifier dynamics, feedback loop stability, gate drive timing, overcurrent trip behavior, and charge pump operation - essential for closed-loop tuning and failure mode analysis during ISL6526A-based design verification.

Is the ISL6526AEVAL2 RoHS compliant and compatible with lead-free reflow?

Yes, the ISL6526AEVAL2 uses RoHS-compliant components and PCB fabrication, consistent with the ISL6526A's Pb-free (e3 termination) packaging specified in FN9055. Its layout and thermal mass align with JEDEC J-STD-020 moisture sensitivity and reflow profile requirements, supporting standard lead-free reflow processes up to 260°C peak temperature without damage to the mounted ISL6526A QFN device or supporting passives.