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L6750
2 to 5 phase controller with LTB technology(R) for VR11.x and AMD6bit CPUs featuring I2C interface
Data Brief
Features

LTB technology(R) to enhance load transient I2C power manager 2 to 5 scalable phase operation Dual-edge asynchronous architecture Flexible driver support PSI# input and IMON output for VR11.1 7/8 bit programmable output - VR10/11.x DAC 6 bit programmable output - AMD AM2 DAC 0.5 % output voltage accuracy Full-differential current sense across inductor DCR Integrated remote sense buffer Adaptive Voltage Positioning (AVP) Feedback disconnection protection Adjustable oscillator from 100 kHz to 1 MHz LSLess startup to manage pre-biased output Programmable Soft-start Threshold sensitive enable pin for VTT Sensing VFQFPN48 7x7 mm package L6750 is a two-to-five phase controller designed to power Intel's most demanding PIV Processors and, most in general, low-voltage, high-current power supplies. The device features LTB technology(R) to provide the fastest response to load transients thus minimizing the output filter composition. L6750 features Power Manager I2C to implement overspeeding and other power management options without using any external component. The device embeds selectable DAC: Output Voltage is programmable up to 1.6000V (Intel VR10 and VR11.x DACs) or up to 1.550V (AMD 6bit DAC) managing DVID transitions with 0.5% output voltage accuracy over line, load and temperature variations. The device assures fast protection against load over current, under / over voltage and feedback disconnections. Low-Side-Less start-up allows soft-start over pre-biased output avoiding dangerous current return through the main inductors as well as negative spike at the load side.L6750 is available in VFQFPN48 7x7 mm package VFQFPN48 - 7x7 mm
Description
Applications

High-Current VRM / VRD for desktop / server / workstation CPUs Graphic cards Low-voltage, high-current power supplies High-density DC DC converters Device summary
Order code
Table 1.
Package VFQFPN48 VFQFPN48
Packing Tube Tape and reel
L6750 L6750TR
February 2008
Rev 1
1/3
www.st.com 3
For further information contact your local STMicroelectronics sales office.
Revision history
L6750
1
Revision history
Table 1.
Date 14-Feb-2008
Document revision history
Revision 1 Initial release. Changes
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L6750
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