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LX1677

Microsemi Corporation
Part Number LX1677
Manufacturer Microsemi Corporation
Description AMD64 Processor VRM Controller
Published Dec 28, 2006
Detailed Description www.DataSheet4U.com LX1677 TM ® AMD64 Processor VRM Controller P RODUCTION D ATA S HEET DESCRIPTION KEY FEATURES ƒ H...
Datasheet PDF File LX1677 PDF File

LX1677
LX1677

Overview
www.
DataSheet4U.
com LX1677 TM ® AMD64 Processor VRM Controller P RODUCTION D ATA S HEET DESCRIPTION KEY FEATURES ƒ High Current Biphase Operation ƒ Outputs As Low As 0.
800V ƒ † Biphase LoadSHARETM ƒ ‡ Transient Correction Loop™ Reduces Required Capacitance ƒ Differential Amplifier For Remote Voltage Sensing ƒ Integrated High Current MOSFET Drivers ƒ 200KHz to 1MHz Frequency Operation ƒ Programmable Slew Rate Control For Start-Up Sequence and VID change ƒ VID Changes On The Fly ƒ Power Good Indicator ƒ Short Circuit Protection ƒ Output Over Voltage and Under Voltage Protection ƒ No current-sense resistors APPLICATIONS The LX1677 is a highly integrated VRM power supply controller IC featuring two PWM switching regulator stages.
The two constant frequency voltage-mode PWM phases are configured as a single biphase high current output core supply.
In biphase operation, the high current (>35A) output is generated by a LoadSHARETM† technique that balances the currents in the two phases.
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