The ISL99227 and ISL99227B are Smart Power Stage (SPS) compatible with Intersil’s ISL68xxx/69xxx Digital Multiphase (DMP) controllers and phase doubler (ISL6617A), respectively. The ISL99227 and ISL99227B have integrated high accuracy current and temperature monitors that can be fed back to the controller and doubler to complete a multiphase DC/DC system. They simplify design and increase performance by eliminating the DCR sensing network and associated thermal compensation. Light-load efficiency is supported via a dedicated LFET control pin. An industry leading thermally enhanced 5x5 PQFN package allows minimal overall PCB real estate. The ISL99227 and ISL99227B feature a 3. 3V compatible, 5. 0V compatible tri-state PWM input that, working together with Intersil’s multiphase PWM controllers, provide a robust solution in the event of abnormal operating conditions. The ISL99227 and ISL99227B also improve system performance and reliability with integrated fault protection of UVLO, over-temperature, and overcurrent. An open-drain fault reporting pin simplifies the handshake between SPS and Intersil controllers and can be used to disable the controller during start-up and fault conditions.

Features

  • Input range: +4.5V to +18V
  • Supports 60A DC current
  • ISL99227 with 3.3V compatible tri-state PWM input
  • ISL99227B with 5.0V compatible tri-state PWM input
  • Downslope current sensing
  • ±3% accuracy current monitor (IMON) with REFIN input
  • 8mV/°C temperature monitor with OT flag
  • Dedicated low-side FET control input
  • Comprehensive fault protection for high system reliability
    • High-side FET short and overcurrent protection
    • Over-temperature protection
    • VCC and VIN Undervoltage Lockout (UVLO)
  • Open-drain fault reporting output
  • Up to 2MHz switching frequency
  • Pb-free (RoHS compliant), 32 Ld 5x5 PQFN

Product Options

Part Number Part Status Pkg. Type Carrier Type MOQ Buy Sample
Active PQFN Reel 3000
Availability
Active PQFN Reel 250
Availability

Documentation & Downloads

Title language Type Format File Size Date
Datasheets & Errata
ISL99227, ISL99227B Datasheet Datasheet PDF 970 KB
User Guides & Manuals
PMBus Interface Install Guide - Win7 x86 and x64 Manual PDF 693 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
PCNs & PDNs
PCN17032A - Product Improvement - Design Change for the Listed Intersil ISL99227* Products Product Change Notice PDF 215 KB
PCN17032 - Minor Design change on ISL99227* controller to fix bugs Product Change Notice PDF 212 KB
Other
PMBus Conversion Software Tool Library ZIP 54.93 MB
ZLHLD Software v2.9 Library ZIP 119.19 MB
CompZL Software v1.5.1 Library ZIP 59.25 MB
PowerPilot Software GUI Library ZIP 435 KB
USB Drivers for the ZLUSBEVAL1Z (Windows XP/Vista) Library ZIP 166 KB
USB Drivers for the ZLUSBEVAL1Z (Windows 7) Library ZIP 1.75 MB