The ISL95833 Pulse Width Modulation (PWM) controller IC provides a complete solution for IMVP-7/VR12™ compliant microprocessor and graphic processor core power supplies. It provides the control and protection for two Voltage Regulators (VRs). The first VR, typically for VCORE, incorporates 1 integrated driver and can operate in 2- or 1-phase configurations. The second VR, typically for Graphics, is a single phase regulator incorporating an integrated driver. The two VRs share a serial control bus to communicate with the CPU and achieve lower cost and smaller board area compared with the two-chip approach. Both VRs utilize Intersil's Robust Ripple Regulator R3 Technology™. The R3 modulator has numerous advantages compared to traditional modulators, including faster transient response, variable switching frequency during load transients, and improved light load efficiency due to its ability to automatically change switching frequency. The ISL95833 has several other key features. Both outputs support either DCR current sensing with a single NTC thermistor for DCR temperature compensation, or more precise resistor current sensing if desired. Both outputs come with remote voltage sense, programmable VBOOT voltage, IMAX, and switching frequency, adjustable overcurrent protection and separate Power-Good signals.

Features

  • Serial Data Bus
  • Dual Outputs:
  • Configurable 2- or 1-phase for the 1st Output using one Integrated Gate Driver
  • 1-phase for the 2nd Output using an Integrated Gate Driver
  • R3 Modulator
  • Excellent Transient Response
  • High Light Load Efficiency
  • 0.5% System Accuracy Over-Temperature
  • Supports Multiple Current Sensing Methods
  • Lossless Inductor DCR Current Sensing
  • Precision Resistor Current Sensing
  • Differential Remote Voltage Sensing
  • Programmable VBOOT Voltage at Start-up
  • Resistor Programmable IMAX, Switching Frequency for Both Outputs
  • Adaptive Body Diode Conduction Time Reduction

Applications

  • IMVP-7/VR12 Compliant Computers

Product Options

Part Number Part Status Pkg. Type Carrier Type MOQ Buy Sample
Active QFN Tube 75
Availability
Active QFN Reel 6000
Availability
Active QFN Tube 75
Availability
Active QFN Reel 6000
Availability

Documentation & Downloads

Title Other Languages Type Format File Size Date
Datasheets & Errata
ISL95833 Datasheet Datasheet PDF 1.58 MB
ISL95833 Data Short Short Form Datasheet PDF 192 KB
Application Notes & White Papers
Five Easy Steps to Create a Multi-Load Power Solution White Paper PDF 846 KB
AN1684: Nonideality of Ground Application Note PDF 397 KB
AN1681: Grounding Techniques Application Note PDF 509 KB
PCNs & PDNs
PCN21005 - Alternate assembly facility of the listed Renesas DFN / QFN / TDFN / TQFN packaged products Product Change Notice PDF 158 KB
PCN13024 - Alternate Manufacturing Site for Assembly of the Listed Intersil DFN/QFN Packaged Products - Advanced Semiconductor Engineering - Chung-Li, Taiwan (ASECL Product Change Notice PDF 183 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
PCN12056 - Alternate Manufacturing Site for Assembly of the Listed Intersil QFN Packaged Products - Advanced Semiconductor Engineering - Chung-Li, Taiwan (ASECL) Product Change Notice PDF 82 KB
Other
PA16093 - Intersil Device Procurement Status Change - Active NCNR - ISL95833* Product Advisory PDF 234 KB
PA12018 - Data Sheet Specification Change for Intersil Products ISL95833* Product Advisory PDF 207 KB