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LM3754 Arkusz danych(PDF) 1 Page - Texas Instruments |
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LM3754 Arkusz danych(HTML) 1 Page - Texas Instruments |
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1 / 47 page  BOOT1 BOOT2 CS1 CSM ILIM CS2 HG1 SW1 LG1 LG2 SW2 HG2 LM3754 COUT RILIM1 L1 RDCR1 CDCR1 CBOOT1 DBOOT1 VIN QT1 VDD DBOOT2 QB1 VIN QT2 L2 RDCR2 CDCR2 QB2 CBOOT2 BOOT1 BOOT2 CS1 CSM ILIM CS2 HG1 SW1 LG1 LG2 SW2 HG2 LM3754 RILIM2 L3 RDCR3 CDCR3 CBOOT3 DBOOT3 VIN QT3 VOUT VDD DBOOT4 QB3 VIN QT4 L4 RDCR4 CDCR4 QB4 CBOOT4 CIN 6V TO 18V DC 1.2V 100A LM3754 www.ti.com SNVS789B – JANUARY 2012 – REVISED APRIL 2013 LM3754 Scalable 2-Phase Synchronous Buck Controller with Integrated FET Drivers and Linear Regulator Controller Check for Samples: LM3754 1 FEATURES APPLICATIONS 2 • Wide Input Voltage Range of 4.5V to 18V • CPUs, GPUs (Graphic Cards), ASICs, FPGAs, Large Memory Arrays, DDR • Up to 12 Channels for 300A Load • High Current POL Converters • System Accuracy Better Than 1% • Networking Systems • 0.6V to 3.6V Output Voltage Range • Power Distribution Systems • Switching Frequency From 200 kHz to 1 MHz • Telecom/Datacom DC/DC Converters • Phase Current Sharing ±12% Max Over Temperature • Desktops, Servers and Workstations • Integrated 4.35V ±2.3% LDO DESCRIPTION • Inductor DCR or Sense Resistor Current The LM3754 is a full featured single-output dual- Sensing phase voltage-mode synchronous PWM buck • Interleaved Switching for Low I/O Ripple controller. It can be configured to control from 2 to 12 Current interleaved power stages creating a single high power output. This controller utilizes voltage-mode control • Integrated Synchronous NFET Drivers with input voltage feed-forward for high noise • Programmable Soft-Start immunity. An internal average current loop forces real • Pre-Biased Startup time current sharing between phases during load • Output Voltage Differential Remote Sensing transients. • Minimum Controllable On-Time of Only 50 ns The LM3754 supports adjustable Soft-Start. The Soft- Start function can only drive the output upwards – it • Programmable Enable and Input UVLO will not pull it down, therefore, pre-biased loads will • Power Good flag not be discharged. Available in the 5 mm x 5 mm • OVP, UVP and Hiccup Over-Current Protection thermally enhanced 32-lead WQFN package with a thermal pad. Simplified Application 1 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. 2 All trademarks are the property of their respective owners. PRODUCTION DATA information is current as of publication date. Copyright © 2012–2013, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
Podobny numer części - LM3754_15 |
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Podobny opis - LM3754_15 |
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