ISL99227FRZ-TR5784: High-efficiency integrated intelligent power stage, specifically designed for servers and AI platforms
Product Overview
The ISL99227FRZ-TR5784 is a 60A integrated Smart Power Stage (SPS) launched by Renesas (formerly Intersil). It integrates low-side/high-side MOSFETs, drivers, and high-precision current sensing and temperature monitoring functions internally. This product can greatly simplify the layout and design of multi-phase VRM power supplies, and enhance system efficiency, thermal management capabilities and reliability. It is specifically designed for Intel and AMD server platforms, telecommunications/network equipment, and high-performance graphics computing platforms (such as AI, GPU computing).
Main technical parameters
Project Parameter description
The current output capacity can reach up to 60A continuous current
Input voltage range (VDRV) : 4.5V - 5.5V (Driver power supply)
Logic control voltage: 3.3V (compatible with mainstream PWM controllers)
The current detection mode integrates digital current detection (IMON output)
Internal thermal monitoring function for temperature monitoring (TMON output)
RDS(ON) (Typical value of low edge) 0.65 mΩ (high edge), 0.38 mΩ (low edge)
Peak efficiency >90% (typically in high-frequency multiphase buck applications)
Package type: 5mm x 5mm QFN package (FRZ package)
The packaging form is Tape & Reel. TR5784 is the shipping version
Operating temperature range: -40°C to +125°C (junction temperature)
Pin Configuration and Function (Brief)
The ISL99227FRZ is packaged in a 5x5 QFN and features the following key pin functions:
PWM: Main control input, accepting signals from an external PWM controller
IMON: Output current monitoring voltage, used for load sensing feedback
TMON: Internal temperature sensing output of the chip
VDRV/GND: Driver power supply and reference ground
SW: Switch node connection, connected to the inductor
BOOT: High-side driver bootstrap input
PHASE: High-side drives the reference node
PGND: Power ground, the return path of the low-side FET
⚠️ It is recommended to use Renesas' s ISL68xxx series of multiphase controllers in combination with good compatibility and complete protection mechanism.
PWM controller (such as ISL68xxx) │ PWM │ +-----------+ | ISL99227 | | |-- SW ----> Inductance --> Vout | Smart | | Power |-- IMON/TMON --> Controller +-----------+ │ │ VDRV GND This topology can form a high-efficiency synchronous step-down power supply that supports current and thermal monitoring, and is highly suitable for multiphase CPU/GPU voltage regulation modules (VRM).
Typical application scenarios
✅ Server motherboard core voltage supply (e.g. VR13.HC, SVID platform)
✅ High-performance graphics computing platforms such as AI accelerator cards and GPU multi-card systems
✅ Power supply for 5G base stations and network equipment
✅ Multiphase step-down DC-DC module (POL power supply)
✅ VRM module, ASIC power supply, high performance storage platform
The same series and alternative models
Model description
The IMON accuracy of the ISL99227BFRZ product is higher ISL99202B 50A SPS, suitable for medium current density platforms TDA21472 Renesas 90A high-density SPS, used for high-end platforms The IR3555 Infineon is similar to an integrated power stage and supports thermal/current monitoring MP86956 is a 70A SPS alternative to Monolithic Power Systems
Summary
The ISL99227FRZ-TR5784 features high integration, excellent efficiency and precise thermal control. It is a flagship-level intelligent power-stage device designed for high-performance computing platforms, telecommunication equipment and server motherboards. It can significantly reduce the PCB area, simplify the design and improve the overall efficiency of the machine, occupying an important position in the construction of modern multiphase power supply systems.
