Part # Brief L6756 datasheet

Part Manufacturer: ST Microelectronics

ST Microelectronics

Part Description: 2 3 4 phase buck controller for VR10, VR11.1 and AM2 processor applications

Part Details:

L6756 2/3/4 phase buck controller for VR10, VR11.1 and AM2 processor applications Data Brief Features LTB technology® enhances load transient response 2 to 4 scalable phase operation Dual-edge asynchronous architecture PSI# input with programmable strategy VFQFPN40 IMON output Flexible driver support Description 7/8 bit programmable output - VR10/11.x DAC 6 bit programmable output - AMD AM2 DAC L6756 is a two-to-four phase controller designed to power Intel s most demanding Processors and, 0.5 % output voltage accuracy most in general, low-voltage, high-current power Full-differential current sense across DCR supplies. The device features LTB technology® to Integrated remote sense buffer provide the fastest response to load transients thus minimizing the output filter composition. Feedback disconnection protection Adjustable oscillator from 100 kHz to 1 MHz L6756 embeds selectable DAC: Output Voltage is programmable up to 1.6000 V (Intel VR10 and LSLess startup to manage pre-biased ouptut VR11.x DACs) or up to 1.550 V (AMD 6bit DAC) Programmable Soft-start managing DVID transitions with ±0.5 % output Threshold sensitive enable Pin for VTT voltage accuracy over line, load and temperature Sensing variations. VFQFPN40 7x7 mm package The device assures fast protection against load over current and under / over voltage. Feedback Applications disconnection prevents from damaging the load in case of misconnections in the system board. High-current VRM / VRD for desktop / server / Low-Side-Less start-up allows soft-start over pre- workstation CPUs biased output avoiding dangerous current return Graphic cards through the main inductors as well as negative spike at the load side. Low-voltage, high-current power supplies High-density DC / DC converters L6756 is available in VFQFPN40 7x7 mm package. Table 1. Device summary Order code Package Packing L6756

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Brief L6756.pdf Datasheet