Laurence Marchini, Editor, writes:
We see from your search that you're looking for information on the term "PWM control",
and we have a large number of manufacturers' news releases and technical articles here on Electronicstalk which will be of interest.
Let me be your guide.
Start with
the news release White LED driver cuts down on flicker from
Advanced Analogic Technologies, which we summarised at the time by saying "By driving up to 10 white LEDs in a serial string, the AAT1239-1 simplifies the use of larger LCD panels in a wide array of battery-powered portable devices".
Earlier in the week,
we featured the news release Programmable LED driver removes need for binning from
Maxim Integrated Products: "Because of its sophisticated programming capabilities, the MAX16816 overcomes many problems and design limitations in older generation LED drivers".
In December 2007, we covered the news from International Rectifier
concerning its IP1206
- take a look at Power stage and controller come together
which says: "The iP1206 is designed for two-phase single output applications up to 30A or dual independent outputs up to 15A".
Take a look also at the news release from National Semiconductor, LED driver offers power and efficiency,
as well as Driver is bright choice for three-colour dimming from Allegro MicroSystems Europe,
and Step-down controller claims widest input range from Intersil.
See also:
Convertor ICs shrink step-down supplies
(August 2007)
Constant-frequency current-mode step-down converters in 3 x 3mm TDFN packages require no external compensation components and offer designers highly compact and easy-to-implement solutions
Optimised CPU cooler outperforms Intel original
(July 2007)
The design of the Aturbo CPU cooler is based on a well-proven air-cooling scheme with an improved base and fin blades
LED driver shrinks space for camera flashes
(June 2007)
Device based on a high-frequency synchronous-boost topology with constant current sink is compact solution for driving single high-brightness white light emitting diodes
High-power LED driver targets automotive uses
(May 2007)
High-voltage high-power constant-current LED driver offers both analogue and PWM dimming
Driver creates compact LED lighting
(March 2007)
SOT23-packaged LED driver offers higher power density than alternative and much larger SO8 devices
Driver cuts LED display component count
(March 2007)
A 3bit constant-current LED driver enables users to minimise the number of components needed to drive LEDs with large pixel spacing
Reference designs for power chipsets
(February 2007)
Two new POWIR+ chipset reference designs are for high-end consumer applications and computing
Buck controller has ultrawide input range
(February 2007)
Current-mode buck controller features a unique combination of high performance, flexibility and ease of use for DC/DC power supply designs
PWM controller includes 150V half-bridge driver
(February 2007)
Synchronous PWM control IC is designed for high performance synchronous DC/DC buck applications with an input voltage range up to 75V
Extremely low ripple step-down controllers
(December 2006)
Versatile, dependable and cost-effective power supplies with output currents of up to 3A can be implemented easily and conveniently using the new XC9220/XC9221 range of step-down DC/DC controller ICs
Controller supports three major power functions
(December 2006)
Intersil has introduced a high-efficiency, multi-function quad output controller that reduces engineering resources by allowing designers to qualify one part for all three power functions
Driver takes charge of auto DC motors
(September 2006)
Driver IC is designed to control two DC motors or up to three different loads via a microcontroller in automotive applications
Bright driver dims to save power
(August 2006)
A high-brightness LED driver comes with a high-voltage PWM pin that allows a wide dimming range
Chipsets create synchronous buck convertors
(August 2006)
The first series of POWIR+ chipsets brings together the IR3637SPbF and IR3637ASPbF application-tuned PWM control ICs and their companion HEXFET MOSFETs for single-phase synchronous buck applications
Power designs go online
(June 2006)
Chipset reference designs and enhanced online design services aim to simplify and accelerate power management circuit design
PWM controller cuts convertor complexity
(April 2006)
A high performance dual synchronous buck PWM control IC helps reduce component count and footprint in nonisolated DC/DC buck convertors delivering up to 80A
Fans offer a choice of airflow ratings
(April 2006)
The Etri 341DY DC axial fan is available in four performance versions with airflow capacity ranging from 33.8 to 52.0 litre/s so that a fan can be selected for most applications
Power manager enhances PWM control
(March 2006)
Enhanced pulsewidth modulation provides faster response time and regulation of power supplies in systems using high-performance processors
Convertor chip drives handset backlight and flash
(March 2006)
An integrated boost (step-up) DC/DC convertor drives white LEDs in LCD backlight and camera flash applications in cellphones and PDAs
Digital signal controllers advance PWM control
(February 2006)
Microchip continues to roll out its 16bit dsPIC digital signal controllers with two new devices
PWM control IC takes drivers onboard
(January 2006)
International Rectifier has launched a three-phase PWM control IC with integrated drivers for DC/DC convertors
Controller drives fluorescents more efficiently
(November 2005)
An integrated inverter controller is designed to drive cold-cathode fluorescent lamps using a full-bridge resonant inverter for maximum efficiency
Charge pump to replace isolated power supplies
(November 2005)
Global supplier of advanced power management solutions ON Semiconductor is introducing the NIS6201 - a floating regulated charge pump for low power applications
Power chips boost flash capabilities
(October 2005)
Texas Instruments has developed a high-power, white light emitting diode (LED) power conversion chip for next-generation camera phones and PDAs
Motor drivers banish tail-end spikes
(June 2005)
Zetex has developed a novel technique to remove the current spike at the end of the commutation cycle in single- and two-phase brushless DC motors
Convertor module simplifies PSU design
(May 2005)
The iPOWIR iP1203 is a fully optimised full-function 15A single-output synchronous buck convertor device that achieves over 90% efficiency at full load
Cool solution for 3.6MHz processors
(April 2005)
The latest addition to the popular San Ace MC CPU cooling range is a long-life, low-noise and operationally efficient fan designed specifically for the latest 3.6GHz Intel Pentium 4 processor
Predriver chip stays in spec
(April 2005)
The ZXBM1015 predriver includes a current monitor that enables supply current on startup and stall to be kept permanently within OEM specifications
Cooling fan features high airflow performance
(April 2005)
The 120 x 38mm San Ace SG type DC cooling fan features high airflow performance of 7.3kl/min and high static pressure of 340Pa
PWM controller offers the best of both senses
(December 2004)
The ISL6568 is a two-phase PWM control IC that provides a precision voltage regulation system for advanced microprocessors
Convertor chip needs no external Schottky diodes
(December 2004)
The MAX1515 is a constant-off-time pulsewidth-modulated source/sink step-down DC/DC convertor
Convertors boast precise linear output
(November 2004)
The XC9228/29 series are synchronous-rectification type step-down DC/DC convertors that allow the output voltage to be adjusted via an external voltage reference input
PWM controller powers up latest processor families
(October 2004)
The IR3092 is an 80A programmable two-phase interleaved PWM control IC that supports AMD Athlon, AMD Athlon64, AMD Opteron and Intel VR10.X processors
Controllers handle complex power requirements
(October 2004)
The new LM274x family of high-speed synchronous switching regulator controllers run from a 1 to 16V input power rail and provide output voltages down to 0.6V