The ISL8120 integrates two voltage-mode PWM leading-edge modulation control, with input feed-forward synchronous buck PWM controllers, to control a dual independent voltage regulator or a 2-phase single output regulator. It also integrates current sharing control for the power module to operate in parallel, which offers high system flexibility. The ISL8120 integrates an internal linear regulator, which generates VCC from input rail for applications with only one single supply rail. The internal oscillator is adjustable from 150kHz to 1. 5MHz, and is able to synchronize to an external clock signal for frequency synchronization and phase paralleling applications. Its PLL circuit can output a phase-shift programmable clock signal for the system to be expanded to 3-, 4-, 6-, 12- phases with desired interleaving phase shift. The ISL8120’s Fault Hand Shake feature protects any channel from overloading/stressing due to system faults or phase failure. The undervoltage fault protection features are also designed to prevent a negative transient on the output voltage during falling down. This eliminates the Schottky diode that is used in some systems for protecting the load device from reversed output voltage damage.

Features

  • Wide VIN range operation: 3V to 22V
  • VCC operation from 3V to 5.60V
  • Excellent output voltage regulation: 0.6V ±0.6%/±0.9% internal reference over commercial/industrial temperature
  • Frequency synchronization
  • Programmable phase shift for 1-, 2-, 3-, 4-, 6-, up to 12-phase applications
  • Fault hand shake capability for high system reliability
  • Digital soft-start with precharged output start-up capability
  • Dual independent channel enable inputs with precision voltage monitor and voltage feed-forward capability
  • Programmable input voltage POR and its hysteresis with a resistor divider at EN input
  • Extensive circuit protection functions: output overvoltage, undervoltage, overcurrent protection, over temperature and pre-power-on reset overvoltage protection option

Applications

  • Power Supply for Datacom/Telecom and POL
  • Paralleling Power Module
  • Wide and Narrow Input Voltage Range Buck Regulators
  • DDR I and II Applications
  • High Current Density Power Supplies
  • Multiple Outputs VRM and VRD

Product Options

Part Number Part Status Pkg. Type Carrier Type MOQ Buy Sample
Active QFN Tube 60
Availability
Active QFN Reel 6000
Availability
Active QFN Tube 60
Availability
Active QFN Reel 6000
Availability
Active QFN Reel 1000
Availability

Documentation & Downloads

Title Other Languages Type Format File Size Date
Datasheets & Errata
ISL8120 Datasheet Datasheet PDF 1.88 MB
User Guides & Manuals
ISL8120EVAL3Z User Guide Manual PDF 1.24 MB
ISL8120EVAL4Z User Guide Manual PDF 943 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
PCN15046 - Wafer Fabrication Site Change for Listed Intersil Products - Global Foundry P6 Process transfer to Palm Bay - Phase II Product Change Notice PDF 398 KB
PCN14009 - Alternate Manufacturing Facilities for Assembly of the Listed Intersil TDFN/QFN/TQFN Packaged Products - Advanced Semiconductor Engineering (ASECL) - Chung-Li , Taiwan and Carsem (CAS) - Ipoh, Malaysia Product Change Notice PDF 151 KB
PCN13060 - Test Site Change for the Listed Intersil Products Product Change Notice PDF 223 KB
PCN13025 - Alternate Bond Wire Material and Manufacturing Facilities for Assembly of the Listed Intersil DFN/QFN Packaged Products - Advanced Semiconductor Engineering (ASECL) - Chung-Li , Taiwan and STATS ChipPAC (SCM) - Kuala Lumpur, Mal Product Change Notice PDF 106 KB
PCN13009 - Alternate Bond Wire Material and Manufacturing Facilities for Assembly of the Listed Intersil DFN/QFN Packaged Products - Advanced Semiconductor Engineering (ASECL) - Chung-Li (ASECL), Taiwan and STATS ChipPAC (SCM) - Kuala Lump Product Change Notice PDF 173 KB
PCN10055 - Alternate Bond Wire Material for Assembly of the Listed Intersil DFN/QFN Packaged Products - STATS ChipPAC Malaysia Product Change Notice PDF 248 KB
Downloads
ISL8120EVAL4Z Design Files Design File ZIP 220 KB
ISL8120EVAL3Z Design Files Design File ZIP 148 KB
Other
TB389: PCB Land Pattern Design and Surface Mount Guidelines for QFN Packages Other PDF 958 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
ISL8120EVAL3Z Dual/n-Phase Buck PWM Controller with Integrated Drivers Evaluation Board Evaluation Renesas
ISL8120EVAL4Z Dual/n-Phase Buck PWM Controller with Integrated Drivers Evaluation Board Evaluation Renesas