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L6711 Datasheet(PDF) 1 Page - STMicroelectronics |
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L6711 Datasheet(HTML) 1 Page - STMicroelectronics |
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1 / 50 page  April 2006 Rev 4 1/50 50 L6711 3 Phase controller with dynamic VID and selectable DACs Features ■ 2A integrated gate drivers ■ Fully differential current reading across inductor or LS MOSFET ■ 0.5% Output voltage accuracy ■ 6 bit programmable output from 0.8185V to 1.5810V in 12.5mV steps ■ 5 bit programmable output from 0.800V to 1.550V in 25mV steps ■ Dynamic VID management ■ Adjustable reference voltage offset ■ 3% active current sharing accuracy ■ Digital 2048 step soft-start ■ Programmable over voltage protection ■ Integrated temperature sensor ■ Constant over current protection ■ Oscillator internally fixed at 150kHz (450kHz ripple) externally adjustable ■ Output enable ■ Integrated remote sense buffer ■ TQFP48 7x7 Package with exposed pad Applications ■ High current VRM/VRD for desktop / Server / Workstation CPUs ■ High density DC/DC Converters Order codes Description The device implements a three phase step-down controller with a 120° phase-shift between each phase with integrated high current drivers in a compact 7x7mm body package with exposed pad. The device embeds selectable DAC: the output voltage ranges from 0.8185V to 1.5810V with 12.5mV steps (VID_SEL = OPEN) or from 0.800V to 1.550V with 25mV steps (VID_SEL = GND; VID5 drives an optional +25mV offset) managing dynamic VID with 0.5% accuracy over line and temp variations. Additional programmable offset can be added to the voltage reference with a single external resistor. The device assures a fast protection against load over current and load over/under voltage. An internal crowbar is provided turning on the low side mosfet if an over-voltage is detected. In case of over-current, the system works in Constant Current mode until UVP. Selectable current reading adds flexibility in system design. TQFP48 (Exposed Pad) Part Number Package Packing L6711 TQFP48 Tube L6711TR TQFP48 Tape & Reel www.st.com |
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