Tag Archives: DC-DC

2-3A, 42-Vin Silent Switcher offers low-EMI regulation

LT8609S is a 2A (3A Peak), 42V input synchronous step-down switching regulator. The synchronous step-down Silent Switcher 2 Delivers 93% efficiency at 2 MHz with ultralow EMI/EMC emissions. By Graham Prophet @ eedesignnewseurope.com:
The LT8609S design reduces EMI/EMC emissions due to very well controlled switching edges, its internal construction with an integral ground plane and the use of copper pillars in lieu of bond wires. This improved EMI/EMC performance is not sensitive to board layout, simplifying design and reducing risk even when using two-layer PC boards.
2-3A, 42-Vin Silent Switcher offers low-EMI regulation – [Link]

High Voltage-Current Half Bridge Driver Using IR2153 & IGBT

IGBT based half bridge board has been designed for multiple applications, like induction heater driver, tesla coil driver, DC-DC converters, SMPS etc. High current and high voltage IGBTs are used to serve high power requirements.

IGBT NGTB40N120FL2WG from ON semi and IR2153 from Infineon semiconductor are important parts of the circuit, IR2153 is a gate driver IC including inbuilt oscillator, 40A/1200V IGBT can handle large current. Gate driver circuit works with 15V DC and load supply 60V DC to 400V DC.

High Voltage-Current Half Bridge Driver Using IR2153 & IGBT – [Link]

20V, 4 MHz, synchronous 2x 6A step-down regulator in 20 sq mm

Graham Prophet @ eedesignnewseurope.com presents the LTC3636 and LTC3636-1 synchronous step-down regulator from Linear:
LTC3636 and LTC3636-1 are high efficiency, 4 MHz synchronous dual output buck regulators that incorporate a constant frequency/controlled on-time, current mode control scheme with phase lockable switching frequency. Their design architecture reduces conducted and radiated emissions.
20V, 4 MHz, synchronous 2x 6A step-down regulator in 20 sq mm – [Link]

Linear applies switched-capacitor step-down topology for inductor-less DC/DC

Graham Prophet @ eedesignnewseurope.com discuss about the new Linear’s step-down inductor-less controller.
LTC7820 is, a high power fixed ratio charge pump DC/DC controller that eliminates the power inductor in a non-isolated intermediate bus converter, allowing up to a 50% reduction in circuit size and up to 4000 W/in³ power density. The 72V fixed-ratio DC/DC controller can deliver 500W. – See more at: http://www.eedesignnewseurope.com/news/linear-applies-switched-capacitor-step-down-topology-inductor-less-dcdc#sthash.pJcu7NoB.dpuf

Step‐up DC/DC converters with built‐in inductors and control ICs

Measuring 2.5×2.0×1.0mm, the newly‐developed XCL102/XCL103 series of step‐up micro DC/DC converters is designed with built‐in inductors and control ICs. By Julien Happich @ edn-europe.com:

The use of built‐in inductors also allows PCB layouts to be simplified, minimizing unwanted radiation noise and operational trouble. The input voltage can be selected from 0.65V (operation hold voltage) to 6.0V, and the output voltage from 2.2V to 5.5V

Step‐up DC/DC converters with built‐in inductors and control ICs – [Link]

Step Up DC-DC Converter – 12V TO 28V DC 175mA

The Step-Up DC-DC Converter project provides 28V, 175mA output with input of 12V DC. The MC34063A IC is heart of the project from On semiconductor. The MC33063A is a monolithic control circuit containing the primary functions required for DC-DC converters. This device consist of an internal temperature compensated reference, comparator, controlled duty cycle oscillator with an active current limit circuit, driver and high current output switch. This IC specially designed to be incorporated step-down, step-up, and voltage-inverting applications with minimum number of external components.

Features

  • Input 12V DC
  • Output 28V, 175mA
  • Output Voltage  Adjustable By On-board Preset
  • Header Connector for Output/Input Connections
  • Low Standby Current

Step Up DC-DC Converter – 12V TO 28V DC 175mA – [Link]

12V to 24V 1A DC-DC Boost Converter using LM2588

12V To 24V Booster is based on LM2588 IC from Texas Instruments. The LM2588 regulator integrated circuit specifically designed for fly-back, step-up (Boost) , and forward converter. The board provides 24V DC 1A DC output, Input 8V to 16V DC. Board has minimum components, screw terminal provided for input & outputs.

Features

  • Supply Input 8V To 16V DC ( Ideal 12V DC)
  • Output 24V 1A

12V to 24V 1A DC-DC Boost Converter using LM2588 – [Link]

2.7V-4.2V input to 3.3V output Buck-Boost Converter

This project shows a DC-DC buck boost circuit which can produce an output of 3.3V for an input of 2.7V to 4.2V , for example from a Li-on battery. The Circuit uses LTC3440 Buck boost IC which is a fixed frequency boost converter. To get high efficient results, inductor with high frequency core material should be used.

Features

  • Input(V): 2.7V DC to 4.2V DC
  • Output(V): 3.3V DC
  • Output load: 600mA
  • PCB:23mmX15mm

2.7V-4.2V input to 3.3V output Buck-Boost Converter – [Link]

LT8390 – 60V Synchronous 4-Switch Buck-Boost Controller with Spread Spectrum

insider79-feature-image

The LT8390, is a synchronous buck-boost DC/DC controller that can regulate output voltage, and input or output current from input voltages above, below and equal to the output voltage. Its 4V to 60V input voltage range and 0V to 60V output voltage range are ideal for voltage regulator, battery and supercap charger applications in automotive, industrial, telecom and even battery-powered systems. The LT8390’s 4-switch buck-boost controller, combined with 4 external N-channel MOSFETs, can deliver from 10W to over 400W of power with efficiencies up to 98%. Its buck-boost capability is ideal for applications such as automotive, where the input voltage can vary dramatically during stop/start, cold crank and load dump conditions. Transitions between buck, buck-boost and boost operating modes are seamless, offering a well regulated output even with wide variations of supply voltage. The LT8390 is offered in either a 28-lead 4mm x 5mm QFN or thermally enhanced TSSOP to provide a very compact solution footprint. [source]

LT8390 – 60V Synchronous 4-Switch Buck-Boost Controller with Spread Spectrum – [Link]

Semtech TS30041 – Buck regulators accept up to 40-V input

ts3004x-bd

A wide input range of 4.5 V to 40 V enables the TS3004x series of DC/DC synchronous buck regulators from Semtech to work in a wide range of applications, including industrial, telecommunication, and consumer. The current-mode TS30041 and TS30042 furnish 1 mA and 2 mA of continuous output current, respectively, and include integrated power switches and robust fault protection in a small 3×3-mm, 16-lead QFN package. by @ edn.com

Semtech TS3004x – Buck regulators accept up to 40-V input – [Link]