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18 Mar 2015

obr1187_1

LT series LED drivers with 10-100W power represent a complete solution with wide possibilities of control. Exceptionally narrow and slim design, remained even at high-power versions, provides a high flexibility of use. 

Power supplies for LED lighting (so called drivers) are available from many producers, in a various qualitative level. Why to decide just for the LT series from German company Friwo? Here are few reasons:

  • precise design, safe operation and a long lifetime
  • voltage and current regulation in one device
  • high efficiency and a possibility of dimming in a range of 0-100% directly via a CTRL pin
  • modules are available in 10-100W power, with a possibility of customization by laser directly at production
  •  also available a module for dimming – so called DIMMbox, further expanding possibilities of control (switch, 1-10V, DALI) and with a possibility of synchronization with up to 1000 slave units
  • very small cross section of modules (21x30mm, resp. 24x30mm at LT100) – applicable even in very tiny conditions

Wide control possibilities of LT series modules are perhaps the most interesting. Modules contain a galvanically isolated CTRL input, by which it is possible to switch on/ off the module without disconnecting from 230V mains. CTRL pin also serves for regulation of an output current. For this purpose, only one resistor (or a potentiometer) is necessary – connected between SEC+ and CTRL pins, with a value counted by a simple formula in the datasheet. The output current can also be controlled by an external voltage in the range of 0-1,8V connected to SEC- and CTRL, as well as by means of a PWM TTL (0/5V).

Further possibilities of control are provided by a standalone additional module DIMMbox. DIMMbox operates as an (almost) lossless PWM regulator with a MOSFET switched at f=600Hz. DIMM-BOX connected to any series LT driver enables to regulate an output current in a range of 10-100% or 0% (OFF) via a usual switch („switch-dimm“ mode), via a linear voltage 1-10V and also a DALI interface. DIMMbox tests after switching on, which of three methods of control is used and consequently accepts only signals from a given input – until switching off the module. DIMMboxes can be connected through SYNC inputs, ensuring the same level of dimming for all modules. Enclosed pictures will provide you the best idea about possibilities of connection.

Every power class is available in several versions, with various output voltages and currents . Detailed information will provide you the LT series overview, DIMMbox datasheet, as well as datasheets of particular models, for example LT20 or LT100.


Friwo LED drivers will light up your LEDs as much as you just want - [Link]

19 Feb 2015

 

GaNFET

In a world with a growing population and ever-expanding need for energy, achieving more efficient electrical power conversion is crucial, but presents a number of challenges. GaN technology offers a solution, delivering a number of advantages to ensure availability of reliable electric power.

TI’s latest whitepaper explores the role of GaN in the power supply chain. Read up on its advantages over silicon for power supply switching, and technology advancements required to create complete system-level solutions for GaN-based designs.

Delivering efficient, reliable power through GaN – [Link]

25 Nov 2014

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by Graham Prophet @ edn.com:

The MX100T from Aim-TTi (Aim Thurlby Thandar) is a 315W precision laboratory power supply’s three outputs can each provide 0 to 35 V at 0 to 3 A. Range switching extends the capabilities so that outputs can be set to 16 V/6 A or 70 V/1.5 A for maximum versatility; where higher power is needed from one output, internal switching circuitry enables up to 210 W arranged as either 35 V/6 A or 70 V/3 A.

All outputs are fully isolated and independent but voltage tracking can be selected to make two or even three outputs track a single voltage control. The isolated tracking capability is useful for creating tracking voltages to different ground points, tracking voltages of opposite polarity, or series and parallel connection of outputs.

Triple output lab power supply offers paralleling & tracking - [Link]

19 Nov 2014

5V-3V3-Reg-Board-PCB-Design-550x448

by tehnikservice.net:

The board includes AMS1117 – 5V voltage regulator and AMS1117–3.3V, Voltage Regulator, providing fixed supply voltages. It features three voltage input options: a screw terminal connector, DC adapter connector and USB connector. It can operate on 6-12V DC power supply and has separate screw terminals for 3.3V and 5V outputs.

5V – 3.3V REG BOARD - [Link]


19 Oct 2014

Who is the winner of umodule demoboard from Linear technology? In addition to getting to know the winner, you can also watch the video record from webinar…

Linear Technology’s family of DC/DC Module products simplifies your analog design. By integrating the DC/DC controller, power switches, magnetic, and a modest amount of capacitance, uModules power products will save precious space on the PCB and reduce the solution weight, development time, BOM qualification and procurement effort. You could find this out during webinar about Linear technology modules.From all of those who filled in our questionnaire after webinar we have drawn winner of the uModulu demoboard. The winner is František Bulko from EVPÚ a.s.
Congratulations to the winner.

Your way to simple and efficient power supply design with Linear Technology - [Link]

30 Sep 2014

minipsu1

by sebulli.com:

Very small power supply unit in the size of a cigarette box. The input voltage is 24V. Its supplied by a external switch mode AC/DC PSU. The output voltage range is 0V to 24V at 0A to 3A. A switch mode preregulator reduces the power loss. This allows a very compact design. Voltage and current are displayed on a RGB OLED display

Miniatur Power Supply Unit with 0..24V and 0..3A - [Link]

29 Sep 2014

obr1589_1

Programme of webinar:

Linear Technology’s family of DC/DC Module products simplifies your analog design. By integrating the DC/DC controller, power switches, magnetic, and a modest amount of capacitance, uModules power products will save precious space on the PCB and reduce the solution weight, development time, BOM qualification and procurement effort.

  • Product groups and parameter ranges
  • uModule construction
  • Reliability data
  • Features: ultralow noise, output sharing, synchronizability / multi-phase operation
  • Information resources
  • Applications examples.
  • Q&A

SOS Webinar – Your way to simple and efficient power supply design with Linear Technology - [Link]

27 Sep 2014

MAX668

IP phones require data and power on the same cable. A high voltage power source of 48V is required, to reduce the voltage drop in the cable. This project has a DC-DC step-up converter that can deliver the required 48V supply at high efficiency. The MAX668 is an excellent choice for the design of this DC-DC step-up converter. The MAX668, a current-mode controller, operates in the PWM mode at medium and heavy loads, providing high-efficiency and low-noise. With power levels greater than 20W, efficiencies of more than 90% are achievable.

MAX668 48V IP Phone Power Supply – [Link]

24 Sep 2014

F2OC7GVHTN0V4UG.MEDIUM

by newtonn2 @ instructables.com:

This is a small bench power supply that I made some time ago, and because I was very busy I couldn’t do the instructable for it. I do apologise for taking so long, I hope it was worth the wait :).

After making my Mini Adjustable Power Supply I was very happy with it, but I was missing a more accurate control of the voltage and current. So I decided to make this slightly bigger (but still small) bench power supply.

[via]

DIY Small Bench Power Supply - [Link]

16 Sep 2014

obr1582_1

Fifteen types, three sizes and three strong features – these are the new DIN-rail power supplies Uno Power from company Phoenix Contact.

To be on the top in a segment of power supplies nowadays means above all high efficiency, low power consumption without a load (Standby) and compact dimensions. New series Uno Power from company Phoenix Contact meets all the most important requirements expected from a good power supply and gives a guarantee of a precise construction known from components from Phoenix Contact at the same time.

Main benefits:

  • high efficiency over 90% at full load
  • very low standby losses below 0.3W
  • compact dimensions and low construction height only 84 mm enables easy assembly into favorite 120mm installation boxes.
  • 15 types with output power of 25-100W, single output (5, 12, 15, 24 a 48VDC)
  • MTBF > 500 000 hrs

Uno Power are available in three sizes – in a width of 22.5/ 35/ 55mm x 90 x 84mm (wxhxd). High efficiency at maintaining compact dimensions results into a high energy density. In praxis it means that for example the 60W type is only 35mm wide.

Uno Power series is marked as „basic“, i.e. doesn´t provide various extra functionality, but on the other hand it provides everything necessary for majority of applications while maintaining an affordable price. Uno power is able to work with a global input voltage range 85-264VAC and is also suitable for applications outside (in a suitable box) – thanks to a guaranteed functionality already from -25°C.
Two 90W types are also certified according to UL1310/508 class 2, while the 2-phase type (24VDC/90W) is suitable for places, where only a higher input voltage is available (264-575 Vac).

Further information can be found in the Phoenix Uno Power flyer and in datasheets at particular types. Another power supplies and UPS can be found in the Phoenix Contact power supplies catalogue.

Power supplies Phoenix Uno Power – yes for three times - [Link]



 
 
 

 

 

 

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