The ISL68239 is a digital triple output multiphase (X+Y+Z ≤ 12) PWM controller supporting PMBus V1.3/AVSBus interfaces. The controller can be configured to support any phase assignments up to a maximum of twelve phases across the three outputs (X, Y, and Z). For example, 10+1+1, 10+2, 8+2+1, 1+1, or even single output operation as a 12+0 configuration is supported. Increased power density, combined with support for the PMBus V1.3 interface, allows the device to support any demanding power supply requirement.

Additionally, the ISL68239 with AVSBus complements PMBus by providing a common high-speed interface to accelerate point-to-point communication between the controller and load to statically and dynamically control the processor voltage, delivering a balanced, power efficient design.

The ISL68239 uses the proprietary Renesas digital synthetic current modulation scheme to achieve the industry-best combination of transient response, ease of tuning, and efficiency across the full load range. Diode emulation and automatic phase add/drop features allow you to extract maximum efficiency from the converter regardless of load conditions. You can use the intuitive Renesas PowerNavigator™ to configure and monitor the device.

With minimal external components, easy configuration, robust fault management, and highly accurate regulation capability, implementing a high-performance, multiphase regulator has never been easier.

Features

  • Advanced linear digital modulation scheme
    • Auto phase add/drop with PFM mode for excellent load vs efficiency profile
    • Dual edge modulation with optional diode braking for faster transient response
    • Excellent VOUT transition performance
    • Zero latency synthetic current control for excellent high-frequency current balance
  • Flexible phase assignment from 0 to 12 phases per output
  • Up to 2MHz switching frequency operation for high density designs
  • Differential remote voltage sensing supports ±0.5% closed-loop system accuracy over load, line, and temperature
  • Highly accurate current sensing for excellent load-line regulation and accurate OCP
    • Supports the full range of Renesas Smart Power Stage (SPS) devices
  • Comprehensive fault management enables high reliability systems
    • Pulse-by-pulse (per phase) and total output current limiting
    • Black Box status recording capability with first fault indicator
  • Intuitive configuration using PowerNavigator
  • SMBus/PMBus V1.3 compatible
  • Up to 16 user configurations stored in device Non-Volatile Memory (NVM)

Applications

  • DDR memory solutions
  • Artificial intelligence/accelerator cards (FPGA, ASIC)
  • Network equipment
  • Server/storage equipment
  • Telecom/datacom equipment
  • Point of load power supply (memory, DSP, ASIC, FPGA)

Product Options

Part Number Part Status Pkg. Type Carrier Type MOQ Buy Sample
Active QFN Tube 37
Availability
Active QFN Reel 4000
Availability
Active QFN Reel 250
Availability

Documentation & Downloads

Title Other Languages Type Format File Size Date
Datasheets & Errata
ISL68229, ISL68239 Datasheet Datasheet PDF 2.58 MB
Application Notes & White Papers
AN1681: Grounding Techniques Application Note PDF 509 KB
AN1684: Nonideality of Ground Application Note PDF 397 KB