Renesas ISL6269EVAL2Z

Overview

ISL6269EVAL2Z from Intersil is a two-phase synchronous buck converter evaluation board designed to validate the ISL6269 PWM controller IC in high-current, low-voltage DC/DC applications. It supports 55–60A output current at programmable voltages (0.6V–2.3V), integrates 5V–12V MOSFET drivers, and implements DCR + r_DS(ON) dual current sensing for precise load-line regulation and channel balancing.

For engineers reviewing the ISL6269EVAL2Z datasheet, ISL6269EVAL2Z pinout, ISL6269EVAL2Z application, or ISL6269EVAL2Z equivalent, this page delivers verified board-level specifications, test-point access, on-board transient load generation, droop configuration options, and PVCC voltage flexibility - all critical for power integrity validation and rapid prototyping of DDR, chipset, FPGA, and ASIC core supplies.

Technical Context

The ISL6269EVAL2Z implements a two-phase interleaved synchronous buck topology optimized for 0.6V–2.3V output with up to 60A total current. It uses the ISL6269 controller's integrated 5V–12V gate drivers, enabling direct drive of high-side and low-side MOSFETs without external driver ICs.

Board-level features include selectable DAC reference (0.6V/0.9V/1.2V/1.5V via DIP switch U2), resistor-divider-based VOUT extension, on-board 25A/50A/µs transient load generator, and configurable droop (enabled/disabled via R45/R46 jumpers). Switching frequency is factory-set to 400kHz (R13 = 60.4kΩ) but adjustable from 80kHz to 1.5MHz per phase.

Key Specifications

Availability

ISL6269EVAL2Z is available at Aetrix Electronics and suitable for DDR memory power delivery, chipset core voltage regulation, FPGA/ASIC DC/DC conversion, and high-current embedded computing applications requiring stable component supply and rapid design validation.

Supply support for ISL6269EVAL2Z 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 systems.

The ISL6269EVAL2Z belongs to Intersil's multi-phase buck controller evaluation platform family, engineered specifically to accelerate development of high-efficiency, high-current VRMs for next-generation processors and programmable logic devices.

FAQ

What is the maximum output current supported by the ISL6269EVAL2Z?

The ISL6269EVAL2Z supports up to 60A output current under standard test conditions (2-phase operation, 1.5V output, 400kHz switching, room temperature, no forced airflow). This rating assumes proper thermal management and use of recommended MOSFETs and inductors as specified in the ISL6269 datasheet and AN1197 application note. Derating applies at higher ambient temperatures or lower input voltages.

How do I configure the ISL6269EVAL2Z for a 1.8V output?

To set 1.8V output on the ISL6269EVAL2Z, retain the default DAC setting (REF1/REF0 = 11 → 1.5V) and add an external resistor divider between VOUT+ and VSEN pins using RH and RL values calculated per Equation 3 in AN1197. For 1.8V, typical values are RH = 150Ω and RL = 300Ω. Ensure R90 remains 0Ω and R81 is populated per the divider design - no DIP switch change is required.

Does the ISL6269EVAL2Z support droop (load-line) regulation?

Yes, the ISL6269EVAL2Z supports optional droop regulation. By populating R45 = 0Ω and leaving R46 open, the board configures the ISL6269 for droop mode using the ICOMP node. The load-line impedance is set by R15/R16 and thermally compensated via the optional NTC network (R9/R10/R12/R14). Droop is disabled by default (R46 = 0Ω, R45 open), matching the board's optimization for tight voltage regulation.

Can I change the switching frequency of the ISL6269EVAL2Z?

Yes, the ISL6269EVAL2Z switching frequency is user-adjustable from 80kHz to 1.5MHz per phase by replacing resistor R13. The default 400kHz setting uses R13 = 60.4kΩ. Refer to page 24 of the ISL6269 datasheet for the exact R13 vs. f_SW relationship and ensure gate drive losses and efficiency trade-offs are evaluated when selecting higher frequencies.

What power supplies are required to operate the ISL6269EVAL2Z?

The ISL6269EVAL2Z requires two independent bench supplies: a 12V/10A source connected to J7 (VIN) and J8 (GND), and a 5V/1A source connected to J23 (VCC) and GND. PVCC is derived from VIN by default (12V), but can be reconfigured to 5V or 8V via onboard resistor options. Voltage sequencing is not required - apply both supplies before enabling the board with S1.