Renesas ISL62392HIEVAL1Z

Overview

ISL62392HIEVAL1Z from Renesas Electronics is an evaluation board designed to demonstrate the performance of the ISL62392 triple-output PWM controller, configured for high-current 1.05V/15A and 1.5V/15A outputs with ~20A overcurrent protection. It integrates two R3-technology PWM channels, a fixed 3.3V/100mA LDO3 linear regulator, on-board dynamic load generators, and comprehensive test points for transient response and regulation analysis in CPU/GPU core power applications.

For engineers reviewing the ISL62392HIEVAL1Z datasheet, ISL62392HIEVAL1Z pinout, ISL62392HIEVAL1Z application, or ISL62392HIEVAL1Z equivalent, this board supports rapid validation of dual-phase VRM designs, startup sequencing (EN1/EN2 truth table), DCR/resistor current sensing configuration, FCCM mode control, and PGOOD monitoring under real-world load transients.

Technical Context

The ISL62392HIEVAL1Z implements the ISL62392 controller in a fully populated, ready-to-test configuration with optimized high-current power stage components: IRF7821PBF and IRF7832PBF MOSFETs, 2.2µH Vishay IHLP-5050CE inductors, and low-ESR POSCAP output capacitors. It supports flexible enable logic per Table 2, resistor-based OCP tuning via ROCSET calculation, and independent dynamic load injection on both PWM channels using +12V-supplied switching circuits.

Test infrastructure includes dedicated scope probe sockets (J2/J3/J5/J6), accessible EN1/EN2/LDO3EN/FCCM test points (TP13/TP8/TP9/TP10), and jumper-configurable floating pins (J1/J4/J7) to validate timing waveforms, phase-node behavior, and fault recovery - all aligned with ISL62392 datasheet startup and protection specifications.

Key Specifications

Availability

ISL62392HIEVAL1Z is available at Aetrix Electronics and suitable for CPU voltage regulation, GPU core power validation, multi-rail VRM design verification, and transient-load response testing requiring stable component supply and full documentation support.

Supply support for ISL62392HIEVAL1Z 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 manufacturer specializing in microcontrollers, analog power management, and interface solutions for industrial, automotive, and computing markets.

The ISL62392HIEVAL1Z belongs to Renesas' precision multi-output power controller evaluation platform family, engineered to accelerate development of high-efficiency, high-current VRMs for advanced processors and SoCs.

FAQ

What is the primary function of the ISL62392HIEVAL1Z evaluation board?

The ISL62392HIEVAL1Z evaluation board is a fully assembled hardware platform designed to demonstrate and validate the operation of the ISL62392 triple-output PWM controller. It enables engineers to evaluate dual-phase VRM performance-including startup sequencing, transient response, overcurrent protection, and LDO3 regulation-using pre-configured high-current power stages and integrated test infrastructure. The ISL62392HIEVAL1Z specifically supports 1.05V/15A and 1.5V/15A output configurations with ~20A OCP capability.

How does the ISL62392HIEVAL1Z support overcurrent protection tuning?

The ISL62392HIEVAL1Z supports resistor-based overcurrent protection tuning via the ROCSET network. For each PWM channel, users replace onboard resistors (e.g., R3/R25) and capacitors (C6/C25) with custom RSENSE and ROCSET values calculated using IOC × RSENSE / 10µA. The board provides solder bridges to switch from DCR sense to resistor sense, and test points (OCSETx, ISENx) allow direct measurement of threshold voltages. This enables precise OCP calibration for the ISL62392HIEVAL1Z without modifying controller firmware or layout.

Can the ISL62392HIEVAL1Z be used to evaluate FCCM mode operation?

Yes, the ISL62392HIEVAL1Z supports forced continuous conduction mode (FCCM) evaluation via the FCCM test point (TP10) and floating jumper J4. When J4 is removed, the FCCM pin is left unconnected, allowing the ISL62392 controller to operate in its default diode emulation mode. When J4 is installed and TP10 is driven high (via U2 switch or external source), FCCM is enabled - maintaining constant switching frequency under light loads. This functionality is documented in the ISL62392 datasheet and directly accessible on the ISL62392HIEVAL1Z board.

What power supplies are required to operate the ISL62392HIEVAL1Z?

The ISL62392HIEVAL1Z requires two independent DC power supplies: a main input of +5.5V to +25V (up to 30A) connected to TP3 (VBAT) and TP4 (GND) to power the PWM channels, and a separate +12V/100mA supply connected to TP14 (+12V) and TP15 (GND) to drive the on-board dynamic load generators. The LDO3 output (TP6) is internally powered and delivers 3.3V/100mA without external dependency. All supplies must be current-limited and properly decoupled per the AN1397 user guide.

How does the ISL62392HIEVAL1Z differ from the ISL62392LOEVAL1Z board?

The ISL62392HIEVAL1Z differs from the ISL62392LOEVAL1Z in its power stage component selection and output rating: it uses higher-current IRF7832PBF (20A) and IRF7821PBF (13.6A) MOSFETs, 2.2µH/29A inductors (vs. 4.7µH/24A), lower-value current-sense resistors (0.2Ω/0.1Ω vs. 0.7Ω/0.5Ω), and different feedback dividers to support 1.05V/15A and 1.5V/15A outputs (vs. 3.3V/8A and 5V/8A). Both share identical PCB layout, schematic topology, and controller footprint (ISL62392HRTZ), but the ISL62392HIEVAL1Z targets high-performance processor core rails.