Electronic Circuits and electronic circuits, electronic schematics plus an extensive resource for hobbyists, inventors and engineers

DiscoverCircuits.com, has 40,000+ electronic circuits, cross-referenced
into 500+ categories.    We have searched the web to help you find quick design ideas.
We make every effort to link to original material posted by the designer. 
Please let us if you would like us to link to or post your design.

HOME Schematics Index Hobby Corner Dave's Circuits Electronic Resources Contact Info
Imagineering Ezine    Discover Solar Energy Dave Johnson & Associates Faraday Touch Switches


Switching Regulators Circuits

Switching Regulators:   #'s - B    C - K     L - R     S - Z
 

Last Updated: November 21, 2017 05:45 AM

Circuits Designed by Dave Johnson, P.E. :
Miniature Pushbutton On/Off Switch -  in many battery powered devices, you would like to turn the circuit on and off by pressing a small pushbutton switch.  One press turns the device on and second press turns it back off.  The flip/flop circuit below uses a minimum number of parts to perform . . . Hobby Circuit designed by Dave Johnson P.E.-October, 2005

Capacitance Proximity Switch
Draws very low power - Ideal for battery-powered applications
6 Models Available - Call 806-368-7747


Links to electronic circuits, electronic schematics, designs for engineers, hobbyists, students & inventors:

LCD Bias (+5V,-7.5V, +12.5V) Plus 8 LED Power Supply -  The LTC3524 is an integrated BiAS and white LED power converter solution for small/medium-sized polysilicon thin film transistor (TFT) liquid crystal (LCD) display panels.  A 1.5MHz synchronous boost converter generates a programmable low noise, high efficiency 25mA TFT supply of up to 6.0V.  Regulated, low ripple charge pumps are used to generate up to +20V and 20V at 2mA.  A second 1.5MHz boost converter powers one or two LED strings with up to five series elements each__ Linear Technology/Analog Devices App Note, May 24, 2010

Low battery cut-off for a car or truck -  Also acts as a Master On / Off Switch.  NOW, Also a New P-Mos Version.  Supplies Positive voltage to grounded devices.   __ Designed by G.L. Chemelec

Low Noise Varactor Biasing with Switching Regulator -  AN85 Telecommunication, satellite links and set-top boxes all require tuning a high frequency oscillation.  The actual tuning element, a varactor diode, requires high voltage bias for operation.  The high voltage bias must be free of noise to prevent unwanted oscillator outputs__ Linear Technology/Analog Devices

Low Noise Varactor Biasing with Switching Regulators: Vanquishing Villainous Vitiators Vis--Vis Vital Varactors -  Linear Technology AN85 __ Designed by Jim Williams - Aug 1st, 2000

Low-cost switcher converts 5 to 24V -  02/16/98 EDN Design Ideas:  (File contains several circuits, scroll to find this one)  __ Circuit Design by Paul C Florian, Plano, TX

LT1074/LT1076 Design Manual -  AN44 Linear Technology This note discusses the use of the LT107) 4 and LT107) 6 high efficiency switching regulators.  These regulators are specifically designed for ease of use.  This App Note is intended to eliminate the most common errors that customers make when using switching regulators__ Linear Technology/Analog Devices

LT1339 Design Manual -  AN73 Linear Technology This App Note contains detailed design information to allow the reader to craft switching regulators using the LT1339 high power synchronous DC/DC converter.  The note provides expanded pin descriptions for the LT1339 as well as easy-to-use graphical tools__ Linear Technology/Analog Devices

LT1534 UltraLow Noise Switching Regulator Controls EMI -  DN178 Design Notes __ Linear Technology/Analog Devices

LT1777 High Voltage Low Noise Buck Switching Regulator -  DN212 Design Notes__ Linear Technology/Analog Devices

LT8705 80V VIN / VOUT Synchronous 4-Switch Buck-Boost DC/DC Controller-Video Product Brief -  The LT8705 is a high performance buck-boost switching regulator controller that operates from input voltages above, below or equal to the output voltage.  The part has integrated input current, input voltage, output current and output voltage feedback loops.  With a wide 2.8V to 80V input and 1.3V to 80V output range, the__ Linear Technology/Analog Devices App Note, Bruce Haug-Senior Product Marketing Engineer Jun 11th 2013

LTC1267 Dual Switching Regulator Controller Operates from High Input Voltages -  DN114 Design Notes__ Linear Technology/Analog Devices

LTC1436-PLL Low Noise Switching Regulator Helps Control EMI -  DN141 Design Notes__ Linear Technology/Analog Devices

LTC1474/LTC1475 High Efficiency Switching Regulators DraW Only 10A Supply Current -  DN162 Design Notes__ Linear Technology/Analog Devices

LTC1702/LTC1703 Switching Regulator Controllers Set a New Standard for Transient Response -  DN206 Design Notes__ Linear Technology/Analog Devices

LTC3129 15V, 200mA Synchronous Buck-Boost Converter with 1.3uA Iq-Video Product Brief -  The LTC3129-1 is a high efficiency, 200mA buck-boost DC/DC converter with a wide ViN and VOUT range.  It includes an accurate RUN pin threshold to allow predictable regulator turn-on and a maximum power point control (MPPC) capability that ensures maximum power extraction from non-ideal power sources such as photovoltaic__ Linear Technology/Analog Devices App Note, Bruce Haug-Senior Product Marketing Engineer Sep 23, 2013

LTC3375 8-Ch Programmable, Parallelable 1A Buck PMIC-Video Product Brief -  The LTC3375 is a digitally programmable high efficiency multioutput power supply IC .  The DC/DCs consist of eight synchronous buck converters (iOUT up to 1A each) all powered from independent 2.25V to 5.5V input supplies.  DC/DC enables, output voltages, operating modes, and phasing may all be independently programmed over__ Linear Technology/Analog Devices App Note, Steve Knoth-Senior Product Marketing Engineer Mar 25th 2013

LTC3676 8-Output PMIC for Application Processors-Video Product Brief -  The LTC3676 is a complete power management solution for advanced portable application processor-based systems.  The device contains four synchronous step-down DC/DC converters for core, memory, i/O, and system on-chip (SoC) rails and three 300mA LDO regulators for low noise analog supplies.  The LTC3676-1 has a 1.5A __ Linear Technology/Analog Devices App Note, Steve Knoth-Senior Product Marketing Engineer, Power Products Oct 24th 2013

LTC3863 60V Low IQ Inverting DC/DC Controller-Video Product Brief -  The LTC3863 is a robust, inverting DC/DC PMOS controller optimized for automotive and industrial applications.  It drives a P-channel power MOSFET to generate a negative output and requires just a single inductor to complete the circuit.  Output voltages from 0.4V to 150V are typically achievable with higher__ Linear Technology/Analog Devices App Note, Bruce Haug-Senior Product Marketing Engineer Jun 11th 2013

LTC3866 Current Mode Synchronous Controller for Sub Milliohm DCR Sensing-Video Product Brief -  The LTC3866 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__ Linear Technology/Analog Devices App Note, Bruce Haug-Product Marketing Engineer May 2, 2012

LTM4620 100A & 26A Thermal Performance -  Measuring the thermal performance of the LTM4620 in 100A (4 parallel LTM4620's) and 26A (single LTM4620) configurations, with and without airflow.  __ Linear Technology/Analog Devices App Note, Aug 15th 2012

LTM4620 Current Sharing  -  Current sharing test of the LTM4620.  During both startup and shutdown, current sharing between LTM4620's is smooth and well controlled.  __ Linear Technology/Analog Devices App Note, Aug 15th 2012

LTM4620 Dual 13A Regulator -  This circuit shows a simplified block diagram of the LTM4620 μModule regulator in a dual output design.  Its two internal high performance synchronous buck regulators produce 1.2V and 1.5V rails, each with 13A load current capability.  The input voltage range is 4.5V to 16V.  __ Linear Technology/Analog Devices App Note, Oct 3, 2012

LTM4620 Efficiency -  Measuring the efficiency of the LTM4620 with Vin = 12, Vout = 1.2V.  At 100A load current, efficiency is above 83%.  __ Linear Technology/Analog Devices App Note, Aug 15th 2012

LTM4620 Short Protection -  Demonstration of short circuit protection of the LTM4620.  With the output shorted to ground, both current and temperature are controlled.  The circuit recovers when the short circuit is removed.  __ Linear Technology/Analog Devices App Note, Aug 15th 2012

Miniature Pushbutton On/Off Switch -  in many battery powered devices, you would like to turn the circuit on and off by pressing a small pushbutton switch.  One press turns the device on and second press turns it back off.  The flip/flop circuit below uses a minimum number of parts to perform . . . Hobby Circuit designed by Dave Johnson P.E.-June, 2006

Minimizing switching-regulator residue in linear-regulator outputs -  12/05/05  EDN Technical Article: Banishing those accursed spikes takes attention to detail and understanding the subtleties.   __ Circuit Design by Jim Williams, EDN's most revered contributor, passed away in June 2011 after a stroke.  He was 63.

Monolithic Switching Regulator with 100V Output Noise -  AN70 Linear Technology This publication details circuitry and applications considerations for the LT1533 low noise switching regulator.  Eleven DC/DC converter circuits are presented, some offering <100V output noise in a 100MHz bandwidth.  Tutorial sections detail low noise DC/DC design, measurement, probing and layout techniques, and magnetics selection.  __ Linear Technology/Analog Devices

New LTC1266 Switching Regulator Provides High Efficiency at 10A Loads -  DN103 Design Notes__ Linear Technology/Analog Devices

New Synchronous Stepdown Switching Regulators Achieve 95% Efficiency -  DN68 Design Notes__ Linear Technology/Analog Devices

No Design Switching Regulator 5V 5A Buck Step Down Regulator -  DN48 Design Notes__ Linear Technology/Analog Devices

No Design Switiching Regulator 5V Buck/Boost Positive to Negative Regulator -  DN49 Design Notes__ Linear Technology/Analog Devices

PLL-based converter controls light source -  EDN Design Ideas:  July 2, 1998        [  NOTE:    FILE
has multiple design, scroll for this one.]  Using the circuit in Figure 1, you can digitally control the light intensity of a lamp.  The control loop is based on a PLL, in which the VCO comprises a light-to-frequency converter (TSL220) coupled to a light source that derives its drive from a switching regulator (L4970A).  The output of the phase/frequency comparator (4046) serves as the control voltage for the switching regulator.  The control voltage is proportional to the frequency error between the reference frequency (fREF) and the signal frequency (fiN) coming from the light-to-frequency converter. __ Circuit Design by Masso Gottardi, ITC-IRST, Trento, Italy

Power Supply Modules for the P54C-VR Pentiumr Microprocessor -  AN63  This App Note describes the design of both linear and switching regulators which provide power for 90MHz Pentium (r) processors.  The circuits are intended to comply with intel's modular power supply specification and provide sufficient power for cache RAM and chip sets in addition to the CPU__ Linear Technology/Analog Devices

Power USB VBUS in Autos with the LT8697 -  USB sockets appear in an increasing number of car models as portable devices become more ubiquitous.  The USB interface delivers power to portable devices via the 5V VBUS and ground lines.  Depending on the USB version and the portable device, the VBUS sources up to 2.1A.  In a car, this high VBUS current presents a challenge.  __ Linear Technology/Analog Devices App Note, Trevor Crane Design Engineer-Power Products Jul 15th 2013

Protection Feature Enhances Boost Converter -  10/27/94 EDN Design Ideas:  A boost-topology switching regulator is the simplest solution for converting a two to three-cell input to a 5V output.  Unfortunately, boost regulators have several inherent disadvantages, including a lack of short-circuit protection and shutdown capability.  In some battery-operated __ Circuit Design by Dimitry Goder, Linear Technology Corp, Milpitas, CA

PWM IC makes synchronous gate driver -  02/02/99 EDN-Design ideas (contains several designs, scroll to find this one) A system with a P, memory, and peripherals usually requires several power-supply voltages.  Designers typically use local switching regulators to produce the desired voltage rails.  One of the most common topologies, the synchronous buck regulator, converts a 5 or 12V bus to some other, lower voltage.   __ Circuit Design by Dimitry Goder, Switch Power Inc, Campbell, CA

Quad Output Switching Converter Provides Power for Large TFT LCD Panels -  DN349 Design Notes__ Linear Technology/Analog Devices

Royer Topology Achieves 100μVp-p Noise at 250V Output -  This circuit's resonant Royer topology achieves 100μVP-P noise at 250V output by minimizing high frequency harmonic in the power drive stage.  The self oscillating resonant Royer circuitry is composed of Q2, Q3, C1, T1 and L1.  Current flow through L1 causes the T1, Q2, Q3, C1 circuitry to oscillate in resonant fashion, supplying __ Linear Technology/Analog Devices App Note, Apr 22, 2011

Got Designs?
Please eMail
if you want me to link to and/or post your original design Thanks.


Switching Regulators:   #'s - B    C - K     L - R     S - Z


HOME Schematics Index Hobby Corner Dave's Circuits Electronic Resources Contact Info
Imagineering Ezine    Discover Solar Energy Dave Johnson & Associates Faraday Touch Switches


 About Us   |  Advertise on DiscoverCircuits.com   |   Report Broken Links  |    Link to DiscoverCircuits.com  |    Privacy Policy

Copyright  January, 1998 - November, 2017     David A. Johnson & Associates.  All Rights reserved. 
 Linking is ALLOWED but COPYING any content or graphics to your web site is EXPRESSLY PROHIBITED.