L6756 Datasheet | STMicroelectronics

2/3/4 phase buck controller for VR10, VR11.1 and AM2 processor applications ..net Data Brief Features - - - - - - - - - - - - - - - - - LTB technology® enhances load transient response 2 to 4 scalable phase operation Dual-edge asynchronous architecture PSI# input with programmable strategy IMON output Flexible driver support 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 DCR Integrated remote sense buffer Feedback disconnection protection Adjustable oscillator from 100 k Hz to 1 MHz LSLess startup to manage pre-biased ouptut Programmable Soft-start Threshold sensitive enable Pin for VTT Sensing VFQFPN40 7x7 mm package VFQFPN40 Description L6756 is a two-to-four phase controller designed to power Intel’s most demanding Processors and, most in general, low-voltage, high-current power supplies. The device Features LTB technology® to provide the fastest response to load transients thus minimizing the output filter position. L6756 embeds selectable DAC: Output Voltage is programmable up to 1.6000 V (Intel VR10 and VR11.x DACs) or up to 1.550 V (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 and under / over voltage. Feedback disconnection prevents from damaging the load in case of misconnections in the system board. Low-Side-Less start-up allows soft-start over prebiased output avoiding dangerous current return through the main inductors as well as negative spike at the load side. L6756 is available in VFQFPN40 7x7 mm package. Applications - - - - High-current VRM / VRD for desktop / server / workstation CPUs Graphic cards Low-voltage, high-current power supplies High-density DC / DC converters Table 1. Device summary Order code Package VFQFPN40 VFQFPN40 Packing Tube Tape & Reel L6756 L6756TR February...