Renesas ISL8024DEMO2Z

Overview

The ISL8024DEMO2Z is a demonstration board from Renesas Electronics designed to power high-speed data converters on Xilinx RFSoC devices. It integrates five precision voltage rails-ADC_AVCC (0.925V/2A), ADC_AVCCAUX (1.8V/2A), DAC_AVCC (0.925V/3.5A), DAC_AVCCAUX (1.8V/2A), and DAC_AVTT (2.5V or 3.0V/2A)-with differential remote sensing, dual-stage LC filtering, and PMBus digital control of the DAC_AVTT rail.

For engineers reviewing the ISL8024DEMO2Z datasheet, ISL8024DEMO2Z pinout, ISL8024DEMO2Z application, or ISL8024DEMO2Z equivalent, this board serves as a validated, plug-in power solution for RFSoC evaluation, enabling rapid prototyping with low-noise, tightly regulated multi-rail outputs and full thermal and efficiency characterization data across all rails.

Technical Context

The ISL8024DEMO2Z implements five independent buck regulator channels using ISL8024 QFN16 DC/DC controllers, each paired with an ISL28191 SOT23-6 differential amplifier for remote voltage sensing. Input sources are 5.0V, 3.3V, and 1.8V; 0.925V rails derive from 3.3V, while 1.8V and 2.5/3.0V rails derive from 5.0V.

Each rail includes a primary LC filter plus a second-stage LC filter achieving ~40dB ripple attenuation at 2MHz, with phase compensation tuned for stability. The DAC_AVTT rail supports PMBus-based voltage set-point adjustment and margining, and all rails feature dedicated input LC filters to suppress inter-rail EMI coupling.

Key Specifications

Availability

ISL8024DEMO2Z is available at Aetrix Electronics and suitable for Xilinx RFSoC evaluation, high-speed ADC/DAC power validation, and multi-rail low-noise analog supply design requiring stable component supply and pre-validated performance.

Supply support for ISL8024DEMO2Z 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 is a global semiconductor manufacturer specializing in microcontrollers, analog power, and mixed-signal solutions for automotive, industrial, and communications markets.

The ISL8024DEMO2Z belongs to Renesas' Industrial Analog and Power demonstration platform family, engineered specifically to accelerate RFSoC system development with turnkey, high-density, low-ripple multi-rail power delivery.

FAQ

What is the primary function of the ISL8024DEMO2Z?

The ISL8024DEMO2Z is a plug-in demonstration board that delivers five precisely regulated, low-noise voltage rails for powering Xilinx RFSoC analog and digital converter blocks. It integrates ISL8024 buck regulators, ISL28191 remote sense amplifiers, dual-stage LC filters, and PMBus control-enabling immediate evaluation without custom power design. The ISL8024DEMO2Z is not a standalone IC but a fully assembled, tested reference platform.

Which voltage rails does the ISL8024DEMO2Z provide and what are their key ratings?

The ISL8024DEMO2Z provides ADC_AVCC (0.925V, ±1%, 2.0A), ADC_AVCCAUX (1.8V, ±1%, 2.0A), DAC_AVCC (0.925V, ±1%, 3.5A), DAC_AVCCAUX (1.8V, ±1%, 2.0A), and DAC_AVTT (2.5V or 3.0V, ±1%, 2.0A). All rails use differential remote sensing and dual LC filtering to maintain tight regulation under dynamic load and minimize output ripple.

Does the ISL8024DEMO2Z support digital configuration, and if so, which rail is controllable?

Yes-the ISL8024DEMO2Z supports PMBus communication for digital control of the DAC_AVTT rail only. This allows real-time voltage set-point adjustment and margining via PMBUS_DATA and PMBUS_CLK signals. Other rails are fixed-output or resistor-programmed and lack digital interface capability. The ISL8024DEMO2Z does not offer full PMBus control across all five rails.

How is voltage regulation accuracy maintained across PCB interconnects on the ISL8024DEMO2Z?

Voltage regulation accuracy is maintained using differential remote sensing: each rail employs an ISL28191 amplifier to monitor voltage directly at the load point (e.g., ADC_AVCC_VS_P/N), compensating for IR drop across board traces and connectors. This ensures ±1% accuracy at the point-of-load-not just at the regulator output-making the ISL8024DEMO2Z suitable for sensitive RFSoC analog supply requirements.

What input voltages does the ISL8024DEMO2Z require to operate?

The ISL8024DEMO2Z requires three input voltage sources: 5.0V (supplies ADC_AVCCAUX, DAC_AVCCAUX, and DAC_AVTT rails), 3.3V (supplies ADC_AVCC and DAC_AVCC rails), and 1.8V (used as auxiliary input per schematic). These inputs connect via J1 (70-pin), J2/J3 (10-pin), and J4 (8-pin) headers. No single-input operation is supported-the board relies on this multi-source architecture.