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]
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.
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 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.
Supply Input 8V To 16V DC ( Ideal 12V DC)
Output 24V 1A
12V to 24V 1A DC-DC Boost Converter using LM2588 – [Link]
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.
Input(V): 2.7V DC to 4.2V DC
Output(V): 3.3V DC
Output load: 600mA
2.7V-4.2V input to 3.3V output Buck-Boost Converter – [Link]
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]
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 Susan Nordyk @ edn.com
Semtech TS3004x – Buck regulators accept up to 40-V input – [Link]
If you have ever tried to connect a 3.3V device to a 5V system, you know what a challenge it can be. The LC-04bi-directional logic level converter is a small device that safely steps down 5V signal to 3.3V and steps up 3.3V to 5V at the same time. In thisinstructable, mybotic explained the procedure to use the LC-04 bi-directional logic converter.
The LC-04 module offers bi-directional shifting of logic level for up to four channels. The logic level HIGH (logic 1) on each side of the board is achieved by 10K Ω pull-up resistors connected to the respective power supply. This provides a quick enough rise time of logic level to convert high frequency (400KHz I²C, SPI, UART etc.) signals without delay.
This module has the following features:
Dual-supply bus translation :
Lower-voltage (LV) supply can be 1.5 V to 7 V
Higher-voltage (HV) supply can be LV to 18 V
Four bi-directional channels
Small size: 0.4″ × 0.5″ × 0.08″ (13 mm × 10 mm × 2 mm)
Breadboard-compatible pin spacing
The LC-04 logic level converter has two types of pins:
Voltage input pins :
2 pins (GND and LV) on Low Voltage side
2 pins (GND and HV) on High Voltage side
Data channels :
4 pins (LV1, LV2, LV3, and LV4) on Low Voltage side
4 pins (HV1, HV2, HV3, and HV4) on High Voltage side
Pin HV and LV set HIGH (logic 1) logic level on High voltage side and Low voltage side respectively, with respect to the GND.
Data channel pins shift logic levels from one voltage reference to another. A low voltage signal sent into LV1, for example, will be shifted up to the higher voltage and sent out through HV1. Similarly, a high voltage signal sent into HV1 will be shifted down to the lower voltage and sent out through LV1.
LC-04 4 Channel Logic Level Converter
Arduino Uno Board and USB Cable
Crocodile Clip (optional)
The wiring is pretty simple. You may even omit the breadboard by making end-to-end connections. Two types of connections are required:
LT8630 is a 600 mA, 100V input capable synchronous step-down switching regulator using synchronous rectification to deliver efficiency as high as 93% while Burst Mode operation keeps quiescent current under 7 µA in no-load standby conditions. by By Graham Prophet @ edn-europe.com:
The device’s 3V to 100V input voltage range suits it for 48V automotive systems, dual battery transportation, industrial and 36V to 72V telecom applications. Its internal high efficiency switches can deliver up to 600 mA of continuous output current to voltages as low as 0.8V.
LTC3119 is a synchronous current mode monolithic buck-boost converter that outputs up to 5A of continuous output current in buck mode from a wide variety of input sources, including single- or multiple-cell batteries, unregulated wall adapters as well as solar panels and supercapacitors. By Graham Prophet @ edn-europe.com:
The device’s 2.5V to 18V input voltage range extends down to 250 mV once started. The output voltage is regulated with inputs above, below or equal to the output and is programmable from 0.8V to 18V. User-selectable Burst Mode operation lowers quiescent current to 35 µA, improving light load efficiency and extending battery run time.
Housed in a 15×9×2.42-mm over-molded BGA package, the LTM8049 µModule dual-output DC/DC converter from Linear Technology is configurable for a combination of SEPIC and/or inverting operation by simply grounding the appropriate output rail. All that is needed to complete the design are input and output capacitors and a few resistors—a total of 7 components compared to approximately 30 components for a comparable discrete design.