The ISL62773A is fully compliant with AMD Fusion™ SVI 2. 0 and provides a complete solution for microprocessor and graphics processor core power. The ISL62773A controller supports two Voltage Regulators (VRs) with three integrated gate drivers and two optional external drivers for maximum flexibility. The Core VR can be configured for 3-, 2-, or 1-phase operation while the Northbridge VR supports 2- or 1-phase configurations. The two VRs share a serial control bus to communicate with the AMD CPU and achieve lower cost and smaller board area compared with two-chip solutions. The PWM modulator is based on Intersil’s Robust Ripple Regulator R3™ Technology. Compared to traditional modulators, the R3™ modulator can automatically change switching frequency for faster transient settling time during load transients and improved light load efficiency. The ISL62773A has several other key features. Both outputs support DCR current sensing with single NTC thermistor for DCR temperature compensation or accurate resistor current sensing. Both outputs utilize remote voltage sense, adjustable switching frequency, OC protection and power-good.


  • Supports AMD SVI 2.0 serial data bus interface
  • Serial VID clock frequency range 100kHz to 25MHz
  • Dual output controller with integrated drivers
  • Two dedicated core drivers
  • One programmable driver for either Core or Northbridge
  • Precision voltage regulation
  • 0.5% system accuracy over-temperature
  • 0.5V to 1.55V in 6.25mV steps
  • Enhanced load line accuracy
  • Supports multiple current sensing methods
  • Lossless inductor DCR current sensing
  • Precision resistor current sensing
  • Programmable 1-, 2- or 3-phase for the core output and 1- or 2-phase for the Northbridge output
  • Adaptive body diode conduction time reduction
  • Superior noise immunity and transient response
  • Output current and voltage telemetry
  • Differential remote voltage sensing
  • High efficiency across entire load range
  • Programmable slew rate
  • Programmable VID offset and droop on both outputs
  • Programmable switching frequency for both outputs
  • Excellent dynamic current balance between phases
  • Protection: OCP/WOC, OVP, PGOOD and thermal monitor
  • Small footprint 48 Ld 6x6 QFN package
  • Pb-free (RoHS compliant)

Product Options

Part Number Part Status Pkg. Type Carrier Type MOQ Buy Sample
Active QFN Tube 50
Active QFN Reel 4000
Active QFN Tube 50
Active QFN Reel 4000

Documentation & Downloads

Title language Type Format File Size Date
Datasheets & Errata
ISL62773A Datasheet Datasheet PDF 1.86 MB
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
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