Renesas ISL62881CCPUEVAL2Z

Overview

The ISL62881CCPUEVAL2Z from Renesas Electronics is an evaluation board designed to demonstrate the ISL62881C single-phase synchronous-buck PWM VCORE controller, which implements Intel IMVP-6.5 protocol for CPU core voltage regulation. It supports 4.5–20V input, delivers 0–1.5V output at up to 26A, operates at 300kHz PWM frequency, and integrates an on-board dynamic-load generator for transient-response testing in notebook and mobile platform power delivery validation.

For engineers reviewing the ISL62881CCPUEVAL2Z datasheet, ISL62881CCPUEVAL2Z test setup, ISL62881CCPUEVAL2Z interface connections, or ISL62881CCPUEVAL2Z application notes, this board provides full hardware access to VID lines (VID0–VID6), VR_ON, DPRSLPVR, PGOOD, COMP, FB, VSEN, IMON, and PHASE signals - enabling comprehensive characterization of IMVP-6.5 compliant VCORE control loop behavior, load-step response, efficiency, and thermal performance under real-world CPU power states.

Technical Context

This board implements a complete single-phase buck converter using the ISL62881C QFN-28 controller, HIP2100IBZ half-bridge gate driver, IRF7821/IRF7832 power MOSFETs, and a 0.45µH inductor. It supports Intel's IMVP-6.5 serial VID interface with six-bit digital voltage identification and dynamic processor sleep signaling via DPRSLPVR and DPRSTP# pins.

The evaluation platform includes configurable DIP switches (S1) for DPRSLPVR/DPRSTP#, toggle switches (S2/S3) for dynamic load and PWM enable control, and dedicated test points for all critical analog and digital signals - including VO, VIN, PHASE, gate waveforms, current-sense (IMON), and feedback nodes - enabling precise measurement of loop stability, transient droop/recovery, and phase margin.

Key Specifications

Availability

The ISL62881CCPUEVAL2Z is available at Aetrix Electronics and suitable for notebook platform validation, mobile CPU power architecture development, IMVP-6.5 compliance verification, and high-current buck regulator reference design requiring stable component supply and documented test methodology.

Supply support for ISL62881CCPUEVAL2Z 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 Corporation is a global semiconductor leader delivering microcontrollers, analog, power, and SoC solutions for automotive, industrial, infrastructure, and IoT applications.

The ISL62881C controller - evaluated by this board - belongs to Renesas' high-precision power management product line, engineered specifically for Intel-compatible CPU core voltage regulation with Robust Ripple Regulator (R3™) technology and IMVP-6.5 protocol compliance.

FAQ

What is the primary purpose of the ISL62881CCPUEVAL2Z evaluation board?

The ISL62881CCPUEVAL2Z evaluation board is a fully assembled hardware platform designed to validate the performance of the ISL62881C IMVP-6.5-compliant single-phase synchronous-buck VCORE controller. It enables engineers to evaluate voltage regulation accuracy, transient load response, loop stability, efficiency, and protocol compliance under real-world conditions - including dynamic load steps, VID programming, and processor sleep-state signaling. The board serves as a reference for notebook and mobile CPU power delivery system design.

Which CPU power protocol does the ISL62881CCPUEVAL2Z support?

The ISL62881CCPUEVAL2Z supports Intel's IMVP-6.5 (Intel Mobile Voltage Positioning 6.5) protocol through its target ISL62881C controller. This includes full implementation of the 6-bit VID interface (VID0–VID6), VR_ON enable signaling, DPRSLPVR and DPRSTP# dynamic sleep control, and PGOOD status reporting - all required for compliant core voltage regulation in mobile Core i-series and Atom-based platforms.

Does the ISL62881CCPUEVAL2Z include an on-board dynamic load generator?

Yes, the ISL62881CCPUEVAL2Z includes an integrated dynamic-load generator controlled by toggle switch S2. When enabled, it applies a calibrated 300µs pulse load step approximating a 0.2Ω resistance across VO and PGND - allowing repeatable, oscilloscope-synchronized measurement of transient voltage droop and recovery without external electronic loads.

What are the key test points and interface connections available on the ISL62881CCPUEVAL2Z?

The ISL62881CCPUEVAL2Z provides 28 labeled test points (TP1–TP40, excluding DNP) and multiple connectors including J5/J6 (VIN), J12/J14 (VO), TP29/TP30 (+5V), TP3/TP2 (+12V), and J10/J7 (VO/PHASE scope sockets). Critical signals like VID0–VID6, VR_ON, DPRSLPVR, PGOOD, COMP, FB, VSEN, IMON, PHASE, BOOT, UGATE, and LGATE are accessible via dedicated pads or headers - enabling full signal integrity and control-loop analysis.

Can the ISL62881CCPUEVAL2Z be used to evaluate R3™ technology?

Yes, the ISL62881CCPUEVAL2Z directly demonstrates Intersil's Robust Ripple Regulator (R3™) technology via the ISL62881C controller. R3™ enables adaptive on-time control with ripple-based feedback, eliminating the need for traditional compensation networks while maintaining stability across wide load and input-voltage ranges - a capability verifiable through COMP pin waveform analysis and transient response measurements on this board.