ISL6567CRZ-T

ISL6567CRZ-T is an Intersil/Renesas PWM controller for DC-DC buck converters, intended for multi‑phase VRMs used in CPUs, GPUs, and other high‑power systems. It is an analog controller that drives external MOSFETs to regulate a high input voltage down to a low, stable core rail. The CRZ-T suffix indicates the package type (CRZ) with tape‑and‑reel packaging.
Key features (typical):
- Programmable switching frequency with multi‑phase support
- Error amplifier/feedback path for voltage regulation
- Enable, soft‑start and sequencing controls
- Protection: overcurrent, overvoltage, undervoltage; fault reporting
- Remote sensing and potential coherence/sharing between phases
Applications:
- CPU/GPU core voltage regulators
- Server, telecom, and other high‑efficiency VRMs
Note: ISL6567CRZ-T is a controller; it requires external MOSFETs, inductors, and other passive components. For exact specs, pinout, and recommended circuitry, consult the latest datasheet.

- Pin count: 28 pins (CRZ package)
- Function: Multi-phase PWM controller for VRMs; drives external MOSFETs to regulate CPU-core voltage in buck converters, with voltage/current sensing, soft-start, enable, and protection features (OC/OV/UV, etc.).

- Manufacturer: Renesas Electronics Corporation
- What kind of company: A Japanese multinational semiconductor company that designs, manufactures, and markets integrated circuits (including analog, power management, and microcontrollers) and related products.

ISL6567CRZ-T is a multiphase PWM controller for high-current VRMs. Common application areas:
- CPU core voltage regulators (desktop/server CPUs)
- GPU/accelerator power rails
- FPGA/ASIC and memory power rails
- Motherboard/multiphase VRMs for high-performance systems
- Telecom/datacom power supplies and other high-current POLs
It’s used in any low-voltage, high-current DC-DC conversion requiring fast transient response and high efficiency.

It uses an 8‑pin SOIC (CRZ code). The “-T” designation indicates Tape & Reel packaging.