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Solutions Search - Multiple Output Buck

60V Low IQ, Dual Output Synchronous Step-Down Controller with Adjustable Gate Drive

Victor Khasiev - Applications Engineer Mar 31st 2017
Design Note 562: Introduction The LTC®3892 is a dual output synchronous buck controller featuring a wide input voltage range of 4.5V to 60V and an output voltage of 0.8V to 99% of VIN. The combination of the LTC3892’s built-in FET drivers and external FETs yield high efficiency and high power capability, up to 97% ...

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Switch Mode Power Supply Current Sensing - Part 1: The Basics

Henry Zhang - Applications Engineering Manager
Mike Shriver - Senior Applications Engineer
Kevin B. Scott - Senior Strategic Marketing Engineer
Nov 20th 2016
Current mode control is widely used for switching mode power supplies due to its high reliability, simple loop compensation design, and simple and reliable load sharing capability. The current sense signal is an essential part of a current mode switch mode power supply design; it is used to regulate the output and also provides ...

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95% Efficient at 2MHz 42V Sync Buck

Jun 24th 2016
Linear Technology’s family of high voltage synchronous step-down DC/DC switching regulators offer up to 95% efficiency. Switching at 2MHz, these low EMI parts utilize the Silent Switcher technology. Other features include spread spectrum frequency modulation, ultra-low quiescent current and are available with single, dual, ...

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Powering Altera Arria 10 FPGA and Arria 10 SoC: Tested and Verified Power Management Solutions

Afshin Odabaee - Business Manager - uModule Power Products Feb 19th 2016
Design Note DN549: Introduction FPGA development kits allow system developers to evaluate an FPGA without having to design a complete system. Figures 1 and 2 show Altera’s new 20nm Arria 10 FPGAs and Arria 10 SoCs (System-on-Chip) development boards. These boards are tested and verified by Altera, exemplifying best design ...

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VID Controller with Phase Extender Provides 120A Power Supply for Latest Generation of FPGAs, ASICs and Processors

Mike Shriver - Senior Applications Engineer Jan 12th 2016
DN547: Introduction The current drawn by FPGAs, ASICs and processors for high performance servers, network and computing systems continues to rise, and load currents of 100A or greater are becoming common. Meanwhile, the chip's operating voltages are dropping to 0.9V and below with tighter voltage regulation requirements. For ...

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Ultrathin Dual 2.5A or Single 5A μModule Regulator Fits on the Backside of PCBs, Allowing Space on the Topside for Digital ICs

Afshin Odabaee - Business Manager - uModule Power Products
Sam Young - Applications Engineer
Nov 23rd 2015
Design Note 546: Introduction The top side of a typical system board, such as a PCIe card, is densely populated with FPGAs/ASICs/ microprocessors, transceivers, connectors, memory ICs and DC/DC regulators, while the backside is often unused. This is a common side effect of the significant difference in top vs back side height ...

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42V Quad Monolithic Synchronous Step-Down Regulator with 30μA Quiescent Current

Zhongming Ye - Applications Engineer Sep 21st 2015
Design Note 544: Introduction Industrial and automotive applications require robust, easy-to-use, compact DC/DC converters to produce a variety of low voltage power supplies. The LT8602 monolithic quad synchronous step-down converter in a 6mm × 6mm package is capable of providing four outputs from a wide input range of ...

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Dual 9A, Step-Down μModule Regulator with Digital Power System Management

Jian Li - Applications Engineering Section Leader
Yingyi Yan - Application Engineer
Marvin Macairan - Associate Applications Engineer
Jul 16th 2015
Design Note 542: Introduction The LTM4675 is a dual 9A or single 18A step-down μModule® (micromodule) DC/DC regulator featuring remote configurability and telemetry monitoring of power system management (PSM) parameters over PMBus—an open standard I2C-based digital interface protocol. Its 6mm × 11.9mm × ...

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Linduino PSM

Michael Jones - Applications Engineer Mar 12th 2015
While many engineers use a dongle and tools to configure Power System Management devices via PMBus, a growing number of designs are adding Board Management Controllers, or connecting their PMBus to an existing microcontroller or application processer. At LTC, the dongle/tool option is comprised of a DC1613 and LTpowerPlay, and ...

Blog Post Linduino 


LTC3890 & LTC4000 60V Input DC/DC Power Supply with Battery Backup

Victor Khasiev - Applications Engineer
Gabino Alonso - Strategic Marketing Engineer
Feb 27th 2015
Introduction Circuitry presented in this article can be very useful for designing compact power supplies and extremely beneficial for system functioning in conditions of input power interruptions. The presented solution can be embedded into uninterruptible power systems or small standalone modules. It can be successfully employed ...

Blog Post Circuit LTspice 


17V Input, Dual 1A Output Synchronous Step-Down Regulator with Ultralow Quiescent Current

Haoran Wu - Applications Engineer Feb 13th 2015
Design Note DN537: Introduction The LTC®3622 dual 1A synchronous monolithic stepdown regulator enables compact, high efficiency supplies for battery powered systems and portable devices as well as general purpose point-of-load regulation. The tiny 14-pin, 3mm × 4mm DFN package takes input voltages from 2.7V to 17V, ...

Blog Post LTspice 


High Efficiency 6-Phase 80A Step-Down Regulator using LTM4630 (x3)

Haoran Wu - Applications Engineer
Gabino Alonso - Strategic Marketing Engineer
Jul 31st 2014
The LTM®4630 is a dual 18A or single 36A output switching mode step-down DC/DC μModule® (micromodule) regulator. Included in the package are the switching controllers, power FETs, inductors, and all supporting components. Operating from an input voltage range of 4.5V to 15V, the LTM4630 supports two outputs each with ...

Blog Post Circuit LTspice 


Dual Phase Buck Controller Drives High Density 1.2V/60A Supply with Submilliohm DCR Sensing

Mike Shriver - Senior Applications Engineer May 30th 2014
Introduction Designers of low output voltage rails for communication, networking, server and industrial systems are challenged to achieve greater load currents and higher efficiency in diminishing board space. The LTC®3774 dual output buck controller eases this burden by interfacing easily with DrMOS devices, providing ...

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The Low Output Voltage Ripple Zeta DC/DC Converter Topology

Mathew Wich - Design Section Leader
Fu Sun - Design Engineer
Apr 28th 2014
In the world of switching DC/DC converters the Zeta topology is a lesser known relative of the SEPIC topology. Both converters provide a positive output voltage that can be greater than, equal to or less than VIN while avoiding the complexity and cost of a buck-boost converter. The Zeta converter however, has the advantage of ...

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LTM4644 TechClips - Efficiency and Thermal Performance

Sam Young - Applications Engineer
Willie Chan - Sr PME Power Modules
Apr 13th 2014
The LTM4644 is a quad 4A step-down µModule regulator configurable as a quad, triple, dual or single output power supply in a small 9 x 15 x 5.01mm BGA. The high number of output options available in one package caters to the needs of FPGAs, ASICs and image sensors. Configured as a quad output, observe how the LTM4644 delivers ...

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LTM4620 TechClips - Dual 13A or Single 26A DC/DC μModule Regulator

Mar 4th 2014
LTM4620 Current Sharing Two LTM4620 µModule regulators sharing current during start up, steady state and shut down.   LTM4620 Efficiency With 20V input and 1.2V output, the efficiency is measured across a range of load current. At 100A load current, the efficiency is measured at 83%.     LTM4620 ...

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Versatile Industrial Power Supply Takes High Voltage Input and Yields from Eight 1A to Two 4A Outputs

Martin Merchant - Sr. Applications Engineer Nov 1st 2013
Introduction Today’s industrial electronic systems contain many of the same components as consumer electronics— microcontrollers, FPGAs, system-on-chip ASICs and other electronics—requiring multiple low voltage rails at widely varied load currents. Industrial applications can also demand a pushbutton interface, ...

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Dual Controller Provides 2μs Step Response and 92% Efficiency for 1.5V Rails

Mike Shriver - Senior Applications Engineer Aug 1st 2012
Introduction The LTC®3838 is a dual output, dual phase buck controller that employs a controlled constant on-time, valley current mode architecture to provide fast load step response, high switching frequency and low duty cycle capability. The switching frequency range is 200kHz to 2MHz—its phase-locked loop keeps ...

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