ISL95812IRZ

ISL95812IRZ is an Intersil (Renesas) high-density, 12-channel multiphase buck regulator controller intended for CPU/GPU VRMs and other multi-rail power delivery. It provides 12 independent PWM control channels with current‑mode feedback, interleaving, and a programmable oscillator to drive a 12‑phase power stage. It accepts voltage/VID control inputs and offers protection features such as overcurrent, over/under‑voltage, and thermal shutoff, along with soft-start and clock synchronization/status reporting for robust regulation. The device requires external MOSFETs, drivers, and inductors to build the complete regulator. IRZ denotes the package variant of the part.

ISL95812IRZ features (concise):
- 12-phase interleaved multiphase buck controller with integrated drivers (suitable for CPU core/memory rails)
- Synchronous buck architecture with per-phase current-mode control for high efficiency
- Programmable switching frequency (and clock synchronization) for layout flexibility
- Remote sense and feedback for accurate regulation and load-line droop compensation
- Flexible multi-rail support with sequencing/tracking and soft-start
- Per-phase current limit plus robust protection: UVLO, overcurrent, overvoltage, overtemperature
- Enable input and power-good signaling for reliable power-up sequencing
- Fault handling options (latch/auto-retry) and comprehensive monitoring
- RoHS-compliant IRZ package for compact PCB integration
Note: Always verify exact pinout, voltage ranges, and feature set from the latest datasheet.

- Pin count: 8 pins (ISL95812IRZ in an 8-pin package such as SOIC/MSOP).
- Function: Dual high-side/low-side gate driver for a synchronous buck regulator (drives two external N-channel MOSFETs). Provides VCC, GND, enable/control pins, and HO/LO outputs for a two-channel step-down converter.

- Manufacturer: Intersil (now part of Renesas Electronics Corporation).
- Company type: A semiconductor company specializing in analog and power-management integrated circuits.

ISL95812IRZ is a multi-rail, multi‑phase buck regulator/controller used for high‑performance power management in computing and communications gear.
Typical applications:
- Desktop/workstation/server VRMs (CPU core, SOC, memory)
- Graphics cards and GPUs
- FPGAs/ASICs in data centers and telecom equipment
- Motherboards and embedded systems with multiple rails
- Telecom/network equipment power supplies
- Storage controllers and PCIe devices
These areas require tight regulation, high efficiency, and multiple regulated rails.

ISL95812IRZ is available in an 8-pin small-outline package (SOIC-8).