Floating surge stopper provides unlimited overvoltage protection
Altera to integrate Enpirion power interfaces into its FPGAs
Automation CAN group plans permanent interoperability test capability
Opening up new user-interaction scenarios with Time-of-Flight measurements 
Goepel electronic initiates Cooperation Network with EMS companies
The number of charging stations for electrical vehicles is expected to soar by 20220, study says 
In automotive lighting, LEDs still lacks of horsepower, study says
Ultra-low-power SoC supports world's smallest Bluetooth location stickers 
Imec and Renesas collaborate on ultra-low power short range radios
European Semiconductor Distribution Market shows sequential recovery in Q1/CY13
Omron appoints TME to strengthen presence in Eastern Europe
Avnet Supply Chain Solutions launches RaBET Tool in Europe
sureCore receives £250K SMART Award to prototype its low power SRAM technology
Amantys partners Fuji Electric to launch IGBT gate drivers for wind and solar markets
Cambridge Nanotherm starts mass manufacturing of thermal management substrate
60 V synchronous buck-boost LED driver delivers over 100 W of LED power
March 13, 2012 // Christoph Hammerschmidt
Linear Technology announces the LT3791, a synchronous buck-boost DC/DC LED driver and voltage controller, which can deliver over 100 W of LED power. Its 4.7 V to 60 V input voltage range makes it ideal for a wide variety of applications, including automotive, industrial and architectural lighting.
Similarly, its output voltage can be set from 0 V to 60 V, enabling the LT3791 to drive a wide range of LEDs in a single string. Its internal 4-switch buck-boost controller operates from input voltages above, below or equal to the output voltage, ideal for applications such as automotive, where the input voltage can vary dramatically during stop/start, cold crank and load dump scenarios. Transitions between buck, pass-through and boost operating modes are seamless, offering a well-regulated output even with wide variations of supply voltage. The LT3791's unique design utilizes three control loops to monitor input current, LED current and output voltage to deliver optimal performance and reliability.
The LT3791 uses four external switching MOSFETs and delivers from 5 W to over 100 W of continuous LED power with efficiencies up to 98.5%. LED current accuracy of ±6% ensures constant lighting while ±2% output voltage accuracy enables the converter to operate as a constant voltage source. The LT3791 utilizes either analog or PWM dimming as required by the application. Furthermore, its switching frequency can be programmed between 200 kHz and 700 kHz or synchronized to an external clock. Additional features include output disconnect, input and output current monitors, open and shorted LED detection and integrated fault protection.
-
Technology News
Floating surge stopper provides unlimited overvoltage protection
May 17, 2013
Protecting sensitive electronic circuitry from voltage transients is an essential part of any system be it automotive, industrial, ...
-
Technology News
Altera to integrate Enpirion power interfaces into its FPGAs
-
Technology News
Automation CAN group plans permanent interoperability test capability
-
Feature Articles
Opening up new user-interaction scenarios with Time-of-Flight measurements
-
Technology News
Goepel electronic initiates Cooperation Network with EMS companies
-
Market News
The number of charging stations for electrical vehicles is expected to soar by 20220, study says
May 17, 2013
The number of electric vehicle charging stations is set to soar globally by 2020, supporting a shift in driving away from ...
-
Market News
In automotive lighting, LEDs still lacks of horsepower, study says
-
Technology News
Ultra-low-power SoC supports world's smallest Bluetooth location stickers
-
Business News
Imec and Renesas collaborate on ultra-low power short range radios
Technical papers
Filter Wizard
Check out the Filter Wizard Series of articles by Filter Guru Kendall Castor-Perry which provide invaluable practical Analog Design guidelines.
Linear video channel
READER OFFER
Read more
The development platform for i.MX 6Quad from element14 (built to the Freescale SABRE Lite design) is an evaluation platform featuring the powerful i.MX 6Q, a multimedia application processor with Quad ARM Cortex-A9 cores at 1.2 GHz from Freescale Semiconductor.
This month, Freescale and element14 are giving away five such platforms, worth £128.06 each, for EETimes Europe's readers to win. The platform helps evaluate the rich set of peripherals and includes a 10/100/Gb Ethernet port, SATA-II, HDMI v1.4, LVDS, parallel RGB interface, touch screen interface, analog headphone/microphone, micro TF and SD card interface, USB, serial port, JTAG, camera interface, and input keys for Android.
And the winners are...
In our previous reader offer, Pico Technology was giving away one of its recently launched PicoScope 3207B, a 2-channel USB 3.0 oscilloscope worth 1451 Euros. Lucky winner Mr L. Sanchez-Gonzalez from Spain should be receiving his PicoScope 3207B soon. Let's wish them some interesting findings with his projects.
Read more
Design centers
Automotive
December 15, 2011 | Texas instruments | 222901974
Unique Ser/Des technology supports encrypted video and audio content with full duplex bi-directional control channel over a single wire interface.
Follow us