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2008-04-11 Step-down controller supports wide I/O voltage ratios
Maxim's MAX17024 step-down controller uses the company's constant-on-time, Quick-PWM architecture to support wide I/O voltage ratios and provide top transient response, while maintaining a relatively constant switching frequency.
2002-08-30 Seiko IC drives up to three white LEDs
The S-8813 series of white LED drivers is a PFM control charge pump dc/dc converter with a built-in constant-current circuit that features three output channels capable of driving up to three white LEDs
2008-08-01 Scrutinizing power-supply stability in a multiloop system
Analyzing a power system's stability begins with a look at the open-loop Bode plot of a buck or flyback converter's power stage. From this plot, the designer extracts phase and gain data for the frequency range of interest
2016-03-22 ROHM's new DC/DC converter features minimum ON-Time
The new synchronous buck DC/DC Converter IC from ROHM provides provide direct 3-5V output from 48V for driving control blocks and operates at high frequency (>2MHz
2007-07-12 Quad EMI filter array integrates ESD protection
Kyocera Corp. introduces the KVA21 quad EMI filter array, a compact, RoHS compliant, distributed constant type component featuring both EMI filtering and ESD protection in a single package
2007-02-05 PWM controller simplifies flyback power supplies
Linear Technology has introduced the LTC3805, a current mode, programmable frequency PWM controller that reduces the size and complexity of flyback power supplies
2008-04-01 Pick the right output capacitors for LED drivers
LEDs require a well-designed constant-current source for controlled brightness. The output capacitor in the traditional buck converter that serves to drive LEDs can have a significant effect on control-loop characteristics, and the capacitor type as well as the output circuit configuration is often critical. Here's how to pick the right capacitors for your intended application
2008-08-01 Maximize switcher efficiency, minimize size
Today's switching regulators and supplies are compact and powerful. However, one of their major trade-offs is higher switching frequency, which makes board design all the more difficult. Board layout more than ever differentiates a good switcher design from a bad one
2003-05-09 Maxim LED driver controls four white LEDs
The MAX1573 white LED driver is capable of driving up to four white LEDs with a regulated, constant current
2003-04-29 Maxim driver powers six white LEDs
The company's MAX1582 driver powers up to six white LEDs in series with a constant current
2008-06-30 Low-cost, green-mode PWM controller for flyback converters
The SG6860 controller is a highly integrated PWM controller that is designed to meet the low standby-power needs of 1ow-power SMPS. The proprietary green-mode function provides off-time modulation to linearly decrease switching frequency under light-load conditions
2008-06-24 Low power design for analog/mixed-signal IP
Power reduction and management techniques using multiple clock and power domains, dynamic voltage and frequency scaling and power gating are effective for digital circuits but for analog design, lowering power consumption must be considered early in the design phase
2005-10-24 Linear Tech's new DC/DC converter tailored for driving LEDs
Linear Technology rolled out a 36V, 2MHz step-down DC/DC converter designed to operate as a constant current LED driver
2005-04-15 Linear Tech's dc-dc controller suits Li-ion powered apps
Linear Technology has developed a constant frequency current mode step-down dc-dc controller in 2-by-3mm DFN and low profile 8-lead ThinSOT package.
2002-02-18 Linear Tech dc/dc converter measures <1.1mm
The LT1946A step-up dc/dc converter features a switching frequency of 2.7MHz, allowing the use of a 1.5?H inductorthereby enabling the entire package to measure <1.1mm
2005-06-02 Linear Tech dc-dc converter features internal 3A, 42V switch
The new current mode, fixed frequency dc-dc converter from Linear Tech features dual rail-to-rail current sense amplifiers and an internal 3A, 42V switch
2004-04-28 Linear Tech buck regulator offers 95 percent efficiency
The new synchronous buck regulator from Linear Technology uses a constant frequency, current mode architecture.
2010-05-04 LED driver with PWM eases dimming control
Clare Inc. has launched the CPC9909 high-voltage HB LED driver that can drive hundreds of HB LEDs in-series and/or parallel combinations in a constant peak-current control topology
2011-10-05 LED driver runs from 6-30V
Diodes' LED driver features switching frequency up to 1MHz and claims to decrease EMI in low-cost lamps
2008-11-12 LED driver handles up to 60 white LEDs
Linear Technology announces the LT3598, a 45V, 2.5MHz DC/DC boost mode converter designed to operate as a constant current LED driver for up to 60 white LEDs
2013-07-22 IR's PFC boost IC comes in 5 pin SOT-23 package
The IRS2505LTRPbF boost IC from International Rectifier incorporates a free-running frequency oscillator with on- and off-time control of the boost power MOSFET
2008-01-31 Improve SNR in multiple ADCs
The constant innovation and development in the wireless communications field comes with a demand for faster and higher resolution high-speed data converters
2006-01-16 I-grade version of LTC3414 now available
Linear Technology announced the I-grade version of the LTC3414, a high efficiency, 4MHz, synchronous buck regulator using a constant frequency, current mode architecture.
2012-09-25 Evaluating LM5018 buck regulator
Read about a buck regulator, which employs the constant on-time (COT) operating principle
2008-05-02 Driver powers up to 10 LEDs, offers 32:1 ratio
Linear Technology announces the LT3593, a high efficiency constant current white LED driver packaged in a 2mm x 2mm DFN package
2008-04-03 Designing RF with op amps (Part 2)
The conclusion of a two-part series addresses the practical circuit examples of RF and intermediate frequency (IF) amplifiers
2012-04-24 DC/DC controller touts 6-100V input voltage
The LT3796 is a high-side current sense DC/DC controller designed to regulate a constant-current or constant-voltage geared for driving high brightness LEDs
2008-01-11 Controller has I/O protection, PFC interface, adaptive UVLO
STMicroelectronics has released a flexible and cost-saving controller for high-performance flyback power converters, designed to operate in either fixed-frequency or quasi-resonant modes
2012-05-16 Controller drives flicker-free LED dimming
Texas Instruments' LM3447 AC/DC LED controller has a dimmer detect, a phase decoder, and adjustable hold current circuits, for constant power regulation and flicker-free dimming operation
2015-05-14 Connecting passive components to logic gates
By adding a few passive components, you can make circuits such as level converters, frequency multipliers, phase detectors, line drivers, and pulse changers
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