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HOME >>>2006 year news
Intersil New Product Information
ISL6566A: Three-Phase PWM Buck Controller with Two Integrated MOSFET Drivers and One External Driver Signal

Product Description:

The ISL6566A is a three-phase, all-in-one VID PWM controller with integrated, 3A, 5V-12V MOSFET gate drivers.
The ISL6566A is a flexible, single-chip microprocessor core voltage regulator solution for Intel Celeron, P4, Prescott, and AMD Athlon, Athlon XP, Athlon64, and Opteron computer motherboards.


Detailed Description:

The ISL6566A three-phase PWM control IC provides a precision voltage regulation system for advanced microprocessors. The integration of power MOSFET drivers into the controller IC marks a departure from the separate PWM controller and driver configuration of previous multiphase product families. By reducing the number of external parts, this integration is optimized for a cost and space saving power management solution.


Features:
Features Benefits
1, 2, or 3-phase operation Flexible design for a wide range of load current
Two, high-current integrated FET drivers and PWM signal for third external FET driver Small PCB area; addresses latest Intel and AMD CPU core load currents; flexible layout; improved thermal performance
5V-12V programmable FET gate drive voltage Optimal efficiency
Precision Core Voltage Regulation Tighter CPU core voltage accuracy
Differential Remote Voltage Sensing Eliminates voltage drops due to power delivery path impedance
0.5% System Accuracy Over Temperature Saves output caps
Adjustable Reference Voltage Offset Accurate loadline programming
Dual-sense current sensing Best for loadline and current balance performance
Lower FET Rds(on) current sensing Excellent channel-to-channel current sharing
Inductor DCR current sensing Accurate Loadline programming
Intel VRM9, Intel VRM10/10.1 AMD Athlon/Athlon XP, AMD Athlon 64, AMD Opteron VID Single PWM for all MB/VRM platforms; reduced Approved Vendor List (AVL)
Over-current and multi-tiered Over-Voltage Protection (OCP, OVP) System monitoring and protection
Adjustable switching frequency of up to 1.5MHz/phase Fast load transient response and fewer output caps 6x6 QFN package Good thermal performance, higher reliability small PCB area
Industrial/commercial temp range Addresses commercial AND industrial MBs
RoHS options available Environmentally friendly
  • Pb-Free Plus Anneal Available (RoHS Compliant)


Applications:
  • Computer motherboards
    • Desktop, Workstation, Entry-level Server
    • Industrial PC/Single-Board)
  • Voltage Regulator Modules (VRMs)
  • NAS/SAN system boards using Intel and AMD CPUs
ISL6566A.pdf



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