The ISL6558 is a multi-phase PWM controller, which in combination with the HIP6601B, HIP6602B, HIP6603B, or ISL6605 companion gate drivers form a complete solution for high-current, high slew-rate applications. The ISL6558 regulates output voltage, balances load currents and provides protective functions for two to four synchronous rectified buck converter channels. A novel approach to current sensing is used to reduce overall solution cost and improve efficiency. The voltage developed across the lower MOSFET during conduction is sampled and fed back to the controller. This lossless current-sensing approach enables the controller to maintain phase-current balance between the power channels, provide overcurrent protection, and permit droop compensation. Optional output voltage droop or active voltage positioning is supported via the DROOP pin. Taking advantage of this feature reduces the size and cost of the output capacitors required to support a load transient. In the event of an overvoltage, the controller monitors and responds to reduce the risk of damage to load devices. Undervoltage conditions are indicated through a PGOOD transition. Overcurrent conditions cause the converter to shutdown limiting the exposure of load devices. These integrated monitoring and protection features provide a safe environment for microprocessors and other advanced low voltage circuits.


  • Pb-Free Available (RoHS Compliant)
  • Multi-Phase Power Conversion
  • 2-, 3-, or 4-Phase Operation
  • Optional Output Voltage Droop
  • Precision Channel-Current Balance
  • Lossless Current Sensing
  • Precision Reference Voltage
  • 0.8V ± 1.5% Over -40°C - 85°C Range
  • 0.8V ± 1.0% Over 0°C - 70°C Range
  • Fast Transient Response
  • Overcurrent and Overvoltage Protection
  • Digital Soft-start
  • Power Good Indication
  • High Ripple Frequency (80kHz to 1.5MHz)
  • QFN Package
  • Compliant to JEDEC PUB95 MO-220 QFN-Quad Flat No Leads-Product Outline
  • Near Chip-Scale Package Footprint; Improves PCB Efficiency and Thinner in Profile


  • Power Supply Control for Microprocessors
  • Low Output Voltage, High Current DC-DC Converters
  • Voltage Regulator Modules
  • Servers and Workstations
  • Memory and Accelerated Graphics Port Supplies
  • Communication Processor and Personal Computer Peripherals

Product Options

Part Number Part Status Pkg. Type Carrier Type MOQ Buy Sample
Active SOICN Tube 480
Active SOICN Reel 2500
Active QFN Tube 60
Active QFN Reel 6000
Active QFN Tube 3600
Active QFN Tube 3600
Active QFN Reel 6000
Active QFN Reel 1000
Active QFN Reel 6000
Active QFN Reel 1000

Documentation & Downloads

Title language Type Format File Size Date
Datasheets & Errata
ISL6558 Datasheet Datasheet PDF 898 KB
User Guides & Manuals
ISL8200MEVAL2PHZ User Guide Manual PDF 683 KB
AN1044: ISL6558EVAL2 User Guide Manual PDF 886 KB
Application Notes & White Papers
Five Easy Steps to Create a Multi-Load Power Solution White Paper PDF 846 KB
AN1681: Grounding Techniques Application Note PDF 509 KB
AN1684: Nonideality of Ground Application Note PDF 397 KB
PCN14011 - Alternate Manufacturing Facilities for Assembly of the Listed Intersil DFN/TDFN/QFN Packaged Products -Carsem (CAS) - Ipoh, Malaysia Product Change Notice PDF 225 KB
PCN13013 - Test Site Change for the Listed Intersil Products - Carsem (CAS) Ipoh Malaysia Product Change Notice PDF 207 KB
PCN12085 - 8l, 14l, 16l SOIC w/ Gold Bond Wire @ ATP as Alternate Assembly Site Product Change Notice PDF 152 KB
ISL6558EVAL2Z Design Files Design File ZIP 1.89 MB
ISL6558 4-Phase iSim:PE Model Schematic SXSCH 296 KB
ISL6558 3-Phase iSim:PE Model Schematic SXSCH 256 KB
ISL6558 2-Phase iSim:PE Model Schematic SXSCH 202 KB
TB389: PCB Land Pattern Design and Surface Mount Guidelines for QFN Packages Other PDF 958 KB
TB379: Thermal Characterization of Packaged Semiconductor Devices Other PDF 653 KB

Software & Tool Pages

Title Type Description Company
iSim:PE Offline Simulation Tool Simulator iSim Personal Edition (iSim:PE) speeds the design cycle and reduces risk early in any project, identifying parts that can be used in current as well as next-generation designs. Renesas

Boards & Kits

Part Number Title Type Company
ISL6558EVAL2Z Multi-Purpose Precision Multiphase PWM Controller Evaluation Board Evaluation Renesas