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2012-04-24 Linear debuts 100V constant-current, constant-voltage controller
Linear debuts 100V constant-current, constant-voltage controller
2011-12-08 Buck converters deliver 300mA constant current
Buck converters deliver 300mA constant current
2011-12-07 LED drivers ICs offer programmable current o/p
LED drivers ICs offer programmable current o/p
2011-10-18 Regulator offers flexible current limit of 5A
Regulator offers flexible current limit of 5A
2011-10-17 Waterproof LED drivers tout 90% efficiency
XP Power releases the DLG series of constant voltage and constant current LED drivers that are waterproof to a depth of one metre and tout up to 90 per cent power efficiency.
2011-09-01 Carbon nanotubes unreliable?
The reliability of carbon nanotubes has come under examination after tests by NIST researchers reveal slow performance degradation under constant current.
2011-08-04 Implementing accurate current limit with LM25085
Implementing accurate current limit with LM25085
2011-05-24 3W, 6W LED drivers feature compact design
Recom Electronic debuts two low-cost AC/DC LED drivers with a constant current supply of 3W and 6W in ultra-compact design.
2011-04-25 Powering LED-backlit LCDs using DC-DC topology (Part 2)
Know the approaches and trade-offs in supply topologies and configurations when powering LED arrays.
2011-03-24 DC/DC converter drives 3 independent 100mA LED strings
Linear Technology's LT3597 DC/DC converter operates as a three channel, constant current LED driver driving up to three strings of LEDs, each with up to ten 100mA LEDs in series, from a 48V input.
2011-03-08 Optocoupler-less LED driver meets UL compliance
Supertex rolls out the HV9971, a patented, isolated, constant current LED driver which maintains current accuracy while insensitive to external component tolerances and does not require an optocoupler.
2011-02-22 Four-channel group delay eases LED display design
Texas Instruments' TLC59282 low-noise 16-channel constant-current sink LED driver improves display data integrity on inexpensive PCBs.
2011-02-01 Level shifter helps to parallel LED current drivers
Level shifter helps to parallel LED current drivers
2011-01-26 Efficient, inexpensive constant-power driver
Efficient, inexpensive constant-power driver
2011-01-13 Boost LED driver efficiency with supply-chopped dimming control
Read about a driver reference design drives a 700mA constant current to a single string of LEDs with forward voltages up to 60V.
2010-12-30 A19 LEDs ref design enables 350mA output
Power Integrations debuts the RDK-251 reference design that offers a single constant-current output of 350mA at a nominal LED string voltage of 15V.
2010-12-10 Understanding discrete LED driver
Read about a 300 mA discrete LED driver, based on a buck-converter principle with an efficiency of 80 to 90%.
2010-11-19 Constant current LED drivers extends over 12W to 20W
Constant current LED drivers extends over 12W to 20W
2010-09-13 Digital constant-current controller for LED applications based on STM8S208X
Digital constant-current controller for LED applications based on STM8S208X
2010-07-30 How to apply additional PWM intensity control to LED drivers
This application note discusses how additional PWM intensity control can be applied to constant-current LED drivers by using a switched-LED power supply.
2010-07-27 Buck controllers pack constant on-time, valley current-mode
Buck controllers pack constant on-time, valley current-mode
2010-06-17 Developing constant current regulation for automotive LED lighting
Developing constant current regulation for automotive LED lighting
2010-04-14 Power saving and LED status detection using the STP16DPPS05 device
This application note describes the STP16DPPS05 low voltage 16bit constant current LED sink driver, with particular focus on two important features: output error detection and auto power-saving.
2010-02-16 AC/DC power supplies offer 86% efficiency
XP Power's series of single-output, high power density fan-cooled AC/DC power supplies target motor and other industrial type loads with their constant current overload characteristic.
2010-01-25 Integrated LED driver uses single external resistor
Diodes has released a 1A-rated linear-mode constant current LED driver completely removes the EMI signature associated with switching regulator solutions.
2009-12-22 12V input LED driver can drive eight channels
The LED driver has a boost mode controller designed to operate as a constant current LED driver for up to 80 white LEDs.
2009-09-28 DC/DC converter delivers up to 800mA output current
DC/DC converter delivers up to 800mA output current
2009-09-24 How to save power on LED drivers for traffic, message signs
As the LED brightness is adjusted by current, a constant current LED driver is necessary to keep uniform LED brightness.
2009-09-23 Dimming LEDs with high-performance drivers
A controlled brightness requires driving the LED with a constant current, which must be maintained regardless of input voltage.
2009-09-22 White LED driver circuits for offline applications using standard PWM controllers
This application note discusses techniques for powering LEDs directly from the AC mains, not only to develop the requisite voltage and current, but also to deliver power from the AC mains with near unity power factor while using off-the-shelf constant frequency PWM controllers.
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