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Solutions Search - External Power Switch Buck Controllers

100V, Bidirectional Multiphase Synchronous Buck or Boost Controller

Ding Li - Senior Power Applications Engineer, Power Products Mar 31st 2017
Current 12V automotive systems are reaching their 3kW power limit due to the ever-increasing demand for more electrical devices. A newly proposed standard, LV148, combines a secondary 48V bus with the existing 12V system. Benefits of this technology include increased available energy that allows for more electrical circuits ...

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LTC3871 Bidirectional PolyPhase® Synchronous Buck or Boost Controller - Video Product Brief

Bruce Haug - Product Marketing Engineer Oct 6th 2016
The LTC®3871 is a high performance bidirectional buck or boost switching regulator controller that operates in either buck or boost mode on demand. It regulates in buck mode from VHIGH-to-VLOW and boost mode from VLOW-to-VHIGH depending on a control signal, making it ideal for 48V/12V automotive dual battery systems. ...

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LTC3895 150VIN, Synchronous Step-Down Controller with 40μA Iq - Video Product Brief

Bruce Haug - Product Marketing Engineer May 16th 2016
  The LTC®3895 is a high performance step-down switching regulator DC/DC controller that drives an all N-channel synchronous power MOSFET stage that can operate from input voltages up to 140V (150V abs max). A constant frequency current mode architecture allows a phase-lockable frequency of up to 850kHz. The ...

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LTC7851/-1 Quad Output, Step-Down Voltage Mode DC/DC Controller with Accurate Current Sharing - Video Product Brief

Bruce Haug - Product Marketing Engineer Mar 17th 2016
   The LTC®7851/LTC7851-1 are quad output multiphase synchronous step-down switching regulator controllers that employ a constant frequency voltage mode architecture. They maintain excellent current balance between channels when paralleled with their internal current sharing loop. Lossless DCR or a low value ...

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LTC3892/-1 Dual, 60VIN Micropower Synchronous Buck Controller - Video Product Brief

Bruce Haug - Product Marketing Engineer Mar 3rd 2016
The LTC®3892/LTC3892-1/LTC3892-2 is a high performance dual step-down DC/DC switching regulator controller that drives all N-channel synchronous power MOSFET stages. Power loss and noise are minimized by operating the two controller output stages out-of-phase. The gate drive voltage can be programmed from 5V to 10V ...

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LTC3877 2-Phase Synchronous Buck Controller with VID Programming & mΩ DCR Sensing - Video Product Brief

Bruce Haug - Product Marketing Engineer Mar 1st 2016
The LTC®3877 is a VID-programmable, constant frequency current mode step-down controller using an advanced and proprietary architecture. This new architecture enhances the signal-to-noise ratio of the current sense signal, allowing the use of very low DC resistance power inductors to maximize efficiency in high current ...

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LT8709 Negative Input Synchronous Multi-Topology DC/DC Controller - Video Product Brief

Bruce Haug - Product Marketing Engineer Mar 25th 2015
  The LT®8709 is a synchronous PWM controller for negativeto- negative or negative-to-positive DC/DC conversion, with rail-to-rail output current monitor and control. The LT8709 is ideal for many local power supply designs. It can be easily configured in buck, boost, buck-boost, and inverting topologies with ...

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LTC3899 Triple Output, 60VIN/60VOUT Low Iq, Synchronous Buck/Buck/Boost Controller - Video Product Brief

Bruce Haug - Product Marketing Engineer Mar 24th 2015
  The LTC®3899 is a high performance triple output (buck/ buck/boost) DC/DC switching regulator controller that drives all N-channel synchronous power MOSFET stages. The constant frequency current mode architecture allows a phase-lockable frequency of up to 850kHz. The LTC3899 operates from a wide 4.5V to 60V ...

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LTC3882 Dual, 38V PolyPhase Step-Down Voltage Mode Controller with Digital PSM - Video Product Brief

Bruce Haug - Product Marketing Engineer Dec 3rd 2014
  The LTC®3882 is a dual, PolyPhase DC/DC synchronous step-down switching regulator controller with PMBus compliant serial interface. It uses a constant frequency, leading-edge modulation, voltage mode architecture for excellent transient response and output regulation. Each PWM channel can produce output voltages ...

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LTC3807 38V Micropower Synchronous Buck Controller with VOUT to 24V - Video Product Brief

Bruce Haug - Product Marketing Engineer Nov 18th 2014
  The LTC®3807 is a high performance step-down switching regulator DC/DC controller that drives an all N-channel synchronous power MOSFET stage. A constant frequency current mode architecture allows a phase-lockable frequency of up to 750kHz. The 50μA no-load quiescent current extends operating run time in ...

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A Guide to Ordering Custom Programmed Digital Power System Management Devices

Bruce Haug - Product Marketing Engineer Oct 30th 2014
Digital power system management is being adopted in the marketplace because of its ability to provide accurate information about the power system and to autonomously control and supervise dozens of voltage rails with ease. Having digital control over analog power supplies with a simple PC connection is valuable during the ...

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Guide To Ordering LTC's Custom-Programmed EEPROM Devices

Bruce Haug - Product Marketing Engineer Sep 11th 2014
  Click Here To Order Custom Programmed Parts Welcome to Linear Technology’s NVM (Non-Volatile Memory) Programming Service video product brief tutorial for Digital Power System's Management Products. This tutorial will go through the process of ordering custom-programmed first articles or prototypes. Devices eligible ...

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LTC3875 Dual, 2-Phase, Synchronous Step-Down Controller with Sub-mΩ DCR Sensing & Temperature Compensation - Video Product Brief

Bruce Haug - Product Marketing Engineer May 29th 2014
  The LTC®3875 is a dual output current mode synchronous step-down DC/DC controller that drives all N-channel synchronous power MOSFET stages. It employs a unique architecture which enhances the signal-to-noise ratio of the current sense signal, allowing the use of very low DC resistance power inductors to maximize ...

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LTC3874 PolyPhase Step-Down Synchronous Slave Controller with Sub-mΩ DCR Sensing - Video Product Brief

Bruce Haug - Product Marketing Engineer May 28th 2014
The LTC®3874 is a dual PolyPhase® current mode synchronous step-down slave controller. It enables high current, multi-phase applications when paired with a companion master controller by extending the phase count. Compatible master controllers include the LTC3866, LTC3875 and LTC3774. The LTC3874 employs a unique architecture ...

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LTC3870 PolyPhase Step-Down Slave Controller for LTC Digital Power System Management Master Controllers - Video Product Brief

Bruce Haug - Product Marketing Engineer May 28th 2014
  The LTC®3870 is a PolyPhase® step-down slave controller specially designed for multiphase operation with the LTC3880 and LTC3883 digital power system management DC/DC controllers. It provides a small and cost effective solution for supplying very large currents by cascading it with a LTC3880 or LTC3883 controller. ...

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MOSFET Failure Protection for Single Output PolyPhase Converter

Mike Shriver - Senior Applications Engineer Mar 19th 2014
The low output voltage rails in many of today’s leading edge communication, networking, computer and industrial systems must be designed to meet the competing demands of higher load current, higher efficiency and diminishing amounts of board real estate. For cases where the load current is high, the most effective approach ...

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LTC3774 Dual, Multiphase,Synchronous Current Mode Controller for Sub-mΩ DCR Sensing

Bruce Haug - Product Marketing Engineer Dec 19th 2013
The LTC®3774 is a dual PolyPhase® current mode synchronous step-down switching regulator controller that drives power blocks, DRMOS or external gate drivers and power MOSFETs. It offers an LTC-proprietary technique that enhances the signal-to-noise ratio of the current sense signal, allowing the use of inductors ...

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What Is Digital Power System Management?

Afshin Odabaee - Business Manager - uModule Power Products Nov 4th 2013
Power management of a high rail count circuit board can be very difficult with meters and oscilloscopes. There is a growing trend to configure and monitor power supplies over a digital communications bus. “Digital Power” or “Digital Power System Management (PSM)” allows systems designers to simplify ...

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Single Phase Step-Down DC/DC Controller with Digital Power System Management and Input Current Sense

Yi Sun - Applications Engineer Oct 4th 2012
The digital power supply market has achieved rapid progress in the recent years. Easy configuration, accurate telemetry, convenient fault analysis and reliability are the trends for the modern digital power supply, which are all provided by Linear’s new digital power controller, the LTC3883. The LTC3883 is a single phase ...

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LTC3866 Current Mode Synchronous Controller for Sub Milliohm DCR Sensing - Video Product Brief

Bruce Haug - Product Marketing Engineer May 2nd 2012
The LTC®3866 is a single phase current mode synchronous step-down switching regulator controller that drives all N-channel power MOSFET switches. It employs a unique architecture which enhances the signal-to-noise ratio of the current sense signal, allowing the use of a very low DC resistance power inductor to maximize the ...

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Integration of Analog DC/DC Controller with Digital Power Management

Yi Sun - Applications Engineer Mar 21st 2011
Modern electronics systems require high performance point of load power supplies with advanced and intelligent power management. Linear Technology’s LTC®3880 combines a best in class analog switching regulator controller with precise mixed signal data conversion for unsurpassed ease of power system design and management. ...

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Voltage vs. Current Mode Control Current Sharing in a PolyPhase DC/DC Converter - LTC3731, LTC3853, LTC3850

Henry Zhang - Applications Engineering Manager Dec 15th 2008
Current sharing performance is critical for PolyPhase DC/DC converter to balance the thermal stress and properly size the power components. The PolyPhase converter can be controlled by either voltage or current mode control scheme. With voltage mode control, the active current sharing is achieved with a complicated external ...

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