National Semiconductor Introduces Industry’s First 20V Synchronous Buck Controller to Integrate Key Four Features
National Semiconductor announced a new synchronous voltage-mode buck controller that drives a variety of high-current point-of-load applications in printers, telecom, networking and embedded computing applications.
Vishay Siliconix ThunderFET Power MOSFET is Industry's First 80-V MOSFET With On-Resistance Specified at 4.5-V Gate Drive
Vishay unveiled the first TrenchFET power MOSFET built on a new low-on-resistance technology optimized for higher-voltage devices. The new ThunderFET SiR880DP is the first 80-V power MOSFET with an on-resistance rating at a 4.5-V gate drive. Packaged in the thermally enhanced PowerPAK® SO-8, the new 80 V SiR880DP offers ultra-low on-resistances of 8.5 mΩ at 4.5 V, 6.7 mΩ at 7.5 V, and 5.9 mΩ at 10 V. Typical on-resistance times gate charge, a key figure of merit (FOM, expressed in nC-mΩ) for MOSFETs in dc-to-dc converter applications, is 161 at 4.5 V.
37V, 1.2A (IOUT), 2.5MHz Step-Down DC/DC Converter with 150°C Maximum Junction Temperature
Linear Technology announces the H-Grade version of the LT3686. The LT3686H is a 1.2A, 37VIN step-down switching regulator. The LT3686H operates within a VIN range of 3.6V to 37V with overvoltage lockout, protecting the regulator and load from transients as high as 55V, making it ideal for load dump and cold-crank conditions commonly found in automotive applications as well as 24V industrial supplies. Its internal 1.85A switch can deliver up to 1.2A of continuous output current at voltages as low as 0.8V. The LT3686H's switching frequency is user programmable from 300kHz to 2.5MHz, enabling designers to maximize efficiency while avoiding critical noise-sensitive frequency bands. Its low minimum on-time enables it to provide high switching frequencies even with high step-down ratios. For example, with an input as high as 16V, it can deliver a 3.3V output using a 2MHz switching frequency. The LT3686H also uses a unique design, which ensures that it maintains constant frequency switching,
MOSFET controller from Diodes Incorporated raises efficiency of AC-DC converters
Diodes Incorporated has announced a synchronous MOSFET controller for driving a MOSFET in place of a Schottky diode in the secondary side of flyback and resonant converters. Designed to maximize circuit efficiency and help achieve Energy Star product ratings, ZXGD3103N8 enables designers to reduce rectifier losses by up to 70% and increase power supply efficiency by up to 3.5%.
Dual full-bridge motor driver ICs with overcurrent protection
Two new full-bridge stepper-motor driver ICs, the A4986 and A4987, have been added to the family of motor driver devices available from Allegro MicroSystems Europe. The new devices are dual DMOS full-bridge stepper-motor drivers with parallel input communication and overcurrent protection, and offer improved microstepping accuracy along with high reliability.
Dual self-protected MOSFETs from Diodes Incorporated provide complete protection and greater thermal efficiency
Optimized for use in the harshest electrical environments, dual self-protected low side MOSFETs from Diodes Incorporated provide automotive and industrial applications with enhanced levels of circuit protection and improvements in overall circuit reliability. With an Rthj-a rating of 95OC/W, these SM8 packaged devices offer a thermal efficiency that is 30% better than that of alternative SO8 packaged devices, ensuring cooler running.
45V 100mA LDO Offers 30µVRMS Noise, Programmable Current Limit & Diagnostic Information
Linear Technology has announced the LT3050, a high voltage, low noise, low dropout voltage linear regulator offering precision, programmable current limit and diagnostic capability. The device delivers up to 100mA output current with a 340mV dropout voltage at full load. The LT3050 features a wide 2V to 45V input voltage range, delivering adjustable output voltages from 0.6V to 44.5V. A single capacitor at the REF/BYP pin provides programmable low noise operation--only 30µVRMS across a wide bandwidth of 10Hz to 100kHz--and reference soft start functionality, preventing output voltage overshoot at turn-on. Output voltage tolerance is highly accurate at ±2% over line, load and temperature.
IR Expands Portfolio of Mid-Voltage Power MOSFETs in PQFN Package Utilising Copper Clip Technology
International Rectifier has announced the expansion of its portfolio of HEXFET power MOSFETs to offer a complete family of mid-voltage devices available in a 5x6 mm PQFN package with optimized copper clip and solder die.
ON Semiconductor Introduced High Efficiency Synchronous Regulators in Compact SOIC-8 Packages
ON Semiconductor introduced a new family of high efficiency 2 to 4A integrated synchronous regulators for consumer electronics applications such as set top boxes, DVD/hard disk drives, LCD monitors/TVs, speakerphones, cable modems, and telecom/datacom equipment.
MAX17117: Complete power solution for GOA notebook LCD panels
Maxim introduced the MAX17117, a complete power solution for gate-on-array (GOA) notebook LCD panels. This fully integrated device includes a 7-channel, high-voltage scan driver for the TFT panel gate drivers; a MOSFET boost converter for AVDD supply; a 350mA LDO; and a high-speed operational amplifier for LCD backplane bias--all in a 25mm2 TQFN.
Rugged MOSFETs from Diodes handle the rigours of VoIP communication equipment
Diodes incorporated has extended its MOSFET product line with the introduction of 60V N-channel devices tailored for use in VoIP communication equipment. Designed to handle the high pulse current needed to generate tip and ring linefeeds and to withstand the avalanche energy induced during switching, the DMN60xx series meets the stringent requirements of the primary switch position in transformer based Subscriber Line Interface Circuits (SLIC) DC/DC converters.
TI introduces 3-channel power management unit for embedded camera modules
Texas Instruments introduced today the TPS657051, a small power management unit that supports portable consumer electronics and space-limited applications, such as webcams or heat- or noise-sensitive embedded camera modules.
MAX8930: All-in-one PMIC provides up to 93% efficiency for cell phone displays
Maxim introduced the MAX8930, a highly integrated power-management IC (PMIC) for cell phone displays. By integrating a white LED (WLED) driver, passive-matrix organic LED (PMOLED) driver, and a linear drop-out regulator (LDO) in a 10mm2 package, this PMIC reduces solution size by over 45% compared to discrete implementations. The MAX8930 uses an adaptive-charge-pump architecture (1x or -0.5x) and advanced dimming techniques to achieve up to 93% efficiency.
High Voltage, Low Dropout Linear Regulators Operate Down to -55°C
Linear Technology announces new wider temperature range versions of its LT1763, LT3008 and LT3010 high voltage linear regulators. The new high reliability "MP" grade features operation from -55°C to +125°C for a wide range of applications including avionics, military, industrial, automotive, RF and telecom.
Auto-Polarity, Millivolt Voltage Step-Up Converter & Power Manager
Linear Technology announces the LTC3109, a highly integrated step-up DC/DC converter and power management IC designed to start up and run from millivolt input voltage sources such as thermoelectric generators (TEGs) and thermopiles. The device's groundbreaking and proprietary auto-polarity topology allows it to generate usable power from input voltages as low as ±30mV, enabling temperature differences as low as ±1°C to be harvested in lieu of traditional battery power. This makes it ideal for energy harvesting applications in which the input voltage polarity is unknown or is subject to reversal. Energy harvesters are well suited for applications requiring low average power, even with periodic pulses of higher load current. For example, in many wireless sensor applications the circuitry is only powered to take measurements and transmit data periodically with a low duty cycle.
Vishay Introduces Video Highlighting SiZ700DT TrenchFET Asymmetric PowerPAIR Power MOSFET
To assist customers in understanding how co-packaging high- and low-side MOSFETs in one compact device can save on space and costs for dc-to-dc converters, Vishay Intertechnology, Inc. (NYSE: VSH) has added a new streaming video to its website (http://www.vishay.com) highlighting the company's SiZ700DT PowerPAIR® dual asymmetric power MOSFET solution.
36V Input (60V Transient), 1A Fault Tolerant Step-Down Regulator Requires Only 75uA of Quiescent Current
Linear Technology has announced the LT3695, a fault tolerant 1A, 36V input step-down switching regulator. Its Burst Mode® operation keeps quiescent current under 75µA in no load standby conditions. The LT3695 operates from a 3.6V to 36V input voltage range and can safely sustain transient voltages up to 60V, making it ideal for load dump and cold-crank conditions commonly found in automotive applications. Its 1.45A internal switch can deliver up to 1A of continuous output current at voltages as low as 0.8V.
IR Introduces Rugged Reliable AUIPS7221R Intelligent Power Switch with High Frequency PWM Capability
International Rectifier has introduced the AUIPS7221R 65 V high-side intelligent power switch with fully integrated bootstrap function for fast actuator applications including fuel magnetic injectors and braking valves.
80V DC/DC Converter Makes Positive or Negative Regulated Voltages
Linear Technology announced the LT3958, a high input voltage DC/DC converter for boost, flyback, SEPIC and inverting power supply applications. This device operates over an input voltage range from 5V to 80V, has an onboard 84V/3.5A power switch, and can achieve efficiencies up to 96%, making it well suited for industrial, automotive, medical and telecom applications.
High Voltage 2A Battery Charger Matches Solar Cell Peak Power Tracking with Simple Control Loop
Linear Technology introduced the LT3652HV, a higher voltage version of the innovative LT3652 monolithic buck battery charger for modern battery chemistries. The LT3652HV offers a wider battery float voltage range than the LT3652 — up to 18V — and features the same input voltage regulation loop that controls charge current to hold the input voltage at a programmed level. The LT3652HV has the flexibility to charge many different battery configurations from various input supplies, and when it is connected to a solar panel, the input regulation loop maintains the panel at peak output power.
Power Integrations’ LinkSwitch-PH and LinkSwitch-PL LED Driver ICs Deliver Flicker-Free TRIAC Dimming in Solid-State Lighting Applications
Power Integrations announced two families of TRIAC-dimmable, single-stage, power-factor-corrected LED driver ICs targeting solid-state lighting (SSL) applications. LinkSwitch-PH (optimized for isolated systems) and LinkSwitch-PL (optimized for non-isolated systems) deliver flicker-free monotonic TRIAC dimming and a user experience similar to that provided by incandescent illumination.
CISSOID introduces EARTH, a new family of high temperature 80V Power MOSFET transistors
CISSOID, a leader in high temperature semiconductor solutions, introduced a new product in their Planet family of high temperature transistors and switches. Earth is a high temperature 80V N-channel power MOSFET Transistor guaranteed for operation from -55°C up to +225°C. It further enhances the family that comprises already Venus (PMOS), Saturn (40V NMOS) and Mercury (small signal transistor).The new device is available in two versions, rated respectively for 5A and 10A maximum drain current.
IR Introduces Rugged Dual Channel Low-Side Driver IC for Automotive Applications
International Rectifier has released the AUIRS4426S dual channel low-side driver IC for use in automotive applications including hybrid power train drives, direct fuel injection and DC-DC converter applications. Available in an 8-lead SOIC package, the automotive-qualified AUIRS4426S is a rugged low-voltage high speed power MOSFET and IGBT driver that features matched propagation delay for both channels to help simplify design.
TI NexFET Power Block delivers maximum efficiency, frequency and power density
Texas Instruments Incorporated today introduced a synchronous MOSFET half bridge that achieves greater than 90 percent efficiency at 25 A – and in half the area of competitive power MOSFET devices. TI's new CSD86350Q5D Power Block combines two asymmetric NexFET power MOSFETs in an advanced package that delivers high performance in low-voltage synchronous buck half-bridge applications, including servers, desktop and notebook PCs, base stations, switches, routers and high-current point-of-load (POL) converters.
6A, 2.5MHz, 42V Boost/Inverting DC/DC Converter with Fault Protection
Linear Technology Corporation announces the LT3579, a current mode, fixed frequency step-up DC/DC converter with integrated fault protection features for output shorts, input/output overvoltages, and overtemperature conditions. The LT3579 incorporates two integrated 42V switches, a 3.4A master switch and a 2.6A slave switch, which can be tied together for a total current of 6A. The LT3579 operates from an input voltage range of 2.5V to 16V, with transient protection to 40V, making it suitable for applications with input sources ranging from a single-cell Li-Ion to automotive inputs. The LT3579 is ideal for many local power supply designs as it can be configured as either a boost, SEPIC or an inverting converter. The device's 4mm x 5mm QFN package (or TSSOP-20E) and tiny externals ensure a very compact footprint while minimizing solution cost.
New Semtech EcoSpeed™ DC-DC Converters Provide Ultra-Fast Transient Response and High Efficiency Across the Full Load Range
Semtech Corp. today launched the SC173 and SC174 buck regulators. These devices are the latest in the company's EcoSpeed™ DC-DC converter platform, which incorporates Semtech's advanced, patented adaptive on-time architecture to achieve best-in-class performance in next-generation dynamic point-of-load (POL) applications. They are ideal for office automation, networking and communications equipment; set-top boxes; portable products; power supply modules; and other embedded products. The new SC173 and SC174 POL regulators help designers meet today's demanding green power requirements by efficiently managing both standby and full current demands.
AnalogicTech Optimizes Power Management for Small Form Factor Backlit Screens
Advanced Analogic Technologies, Inc. today introduced the AAT282X active matrix thin film transistor (TFT) liquid crystal display (LCD) DC/DC converter family that includes a WLED driver and VCOM buffer to enable the delivery of a fully integrated power solution for portable backlit displays. Key target applications include automotive displays, digital photo frames, netbooks, e-readers and handheld GPS navigation devices.
Freescale releases power management IC for new Intel Atom processor
Freescale Semiconductor today announced that it has developed a high-performance audio and power management solution for Intel's new Atom processor-based platforms (formerly codenamed "Moorestown"). The highly integrated chip set is designed to efficiently manage processing power while enabling smaller form factors and longer battery life in next-generation mobile connected devices.
Fairchild Semiconductor's 5V TinyBoost™ Regulator Facilitates a Richer User Experience in Smartphones and PMPs
As portable devices begin to overtake the PC-centric world, it is increasingly important that cell phones, smartphones, digital cameras and other devices are able to communicate with each other. To enable this, Fairchild Semiconductor's FAN4860, a 5V 300mA TinyBoost regulator offers power for USB On-the-Go (OTG) and HDMI communication circuits, combining a high level of efficiency as well as a small form factor.
NXP Releases Two New 2x2 mm Leadless Discretes Packages With Industry’s Lowest Height of 0.65 mm
NXP Semiconductors today announced two new small-signal discrete leadless packages measuring 2 mm by 2 mm with industry's lowest height of 0.65 mm. Available in a 3-lead (SOT1061) and a 6-lead (SOT1118) version, the plastic SMD (Surface Mount Device) packages offer an increased lifetime with an exposed heat sink for excellent thermal and electrical conductivity. The new products – including 26 types of FET-KYs, dual P-channel MOSFET, low VCEsat transistors and Schottky rectifiers – achieve power dissipation Ptot up to 2.1 Watt. This performance is comparable to products in industry standard package SOT89 (SC-62) while only taking less than half it's space on a PCB.
Toshiba Electronics Announces Programmable Digital Voltage Regulator
Toshiba Electronics Europe has launched a highly integrated digital DC-DC step-down converter that will save space, improve efficiency and increase the design flexibility of point-of-load (PoL) power designs. The new TC7750FTG programmable voltage regulator combines a PWM driver and FETs with controller and feedback loop in a single, compact package.
33V (62V Transient), 3.5A(IOUT), 2.4MHz Step-Down DC/DC Converter with TJ(MAX)=150ºC
Linear Technology has announced the H-grade version of the LT3972. The LT3972 is a 3.5A, 33V step-down switching regulator with Burst Mode® operation to keep quiescent current under 75µA. The LT3972 operates within a VIN range of 3.6V to 33V, with overvoltage lockout protection against transients as high as 62V, making it ideal for load dump and cold-crank conditions found in automotive applications. Its internal 4.6A switch can deliver up to 3.5A of continuous output current to voltages as low as 0.79V. The LT3972's Burst Mode operation offers ultralow quiescent current, well suited for applications such as automotive or telecom systems, which demand always-on operation and optimum battery life. Switching frequency is user programmable from 200kHz to 2.4MHz, enabling the designer to optimize efficiency while avoiding critical noise-sensitive frequency bands. The combination of its thermally enhanced MSOP-10E package and high switching frequency, which keeps external inductors and capa
Ultralow Power 15mA Synchronous Low Noise Step-Down Switching Regulator
Linear Technology has announced the LTC3620, a high efficiency, synchronous buck regulator which can deliver up to 15mA from a very small footprint for single Li-Ion-powered applications. The internal synchronous switches deliver efficiencies as high as 95% while Burst Mode® operation requires only 18uA of quiescent current, maximizing battery run time. The LTC3620 can take a 2.9V-5.5V input, and is adjustable to outputs as low as the 0.6V, whereas the LTC3620-1 option is internally programmed to provide a 1.1V output, eliminating the need for external feedback resistors. The LTC3620's 2mm x 2mm DFN package with only four tiny externals, ensures a very compact solution footprint for a wide array of ultralow power applications.
Vishay's New 600-V, 8-A PFC Rectifier Series Features Diodes With Voltage Drop as Low as 1 V and Recovery Charge as Low as 62 nC in 175 °C-Rated Package
Vishay Intertechnology (NYSE: VSH) today introduced six new FRED Pt hyperfast rectifiers for consumer electronics applications. The new 600-V, 8-A devices feature an ultra-low typical voltage drop of 1 V at rated current, fast recovery times as low as 16 ns in hard switching conditions, and typical leakage current at 125 °C as low as 30 µA.
Switch-Mode Battery Chargers with Programmable JEITA Support
Summit Microelectronics has expanded its third-generation programmable battery charger integrated circuit (IC) family for single-cell Li-Ion, Li-Polymer, and Li-FePO4 powered systems.
Freescale introduces industry-first 50 V RF LDMOS power transistor for high-mismatch applications
Freescale Semiconductor today introduced an RF LDMOS power transistor designed for operation from 1.8 to 600 MHz and optimized for use under the potentially-destructive impedance mismatch conditions encountered in applications such as CO2 lasers, plasma generators, and magnetic resonance imaging (MRI) scanners. The new MRFE6VP6300H FET is the world's first 50 V LDMOS transistor to deliver full-rated output power of 300 W CW into a load with a Voltage Standing Wave Ratio (VSWR) of 65:1.
80VIN/80VOUT, Constant Voltage, Constant-Current DC/DC Converter
Linear Technology announces the LT3956, an 80V high-side current sense DC/DC converter designed to operate as a constant-current and constant-voltage regulator. It is ideal for driving high current LEDs as well as charging batteries and supercaps. Its 4.5V to 80V input voltage range makes it ideal for a wide variety of applications, including automotive, industrial and architectural lighting. The LT3956 uses an internal N-channel MOSFET and can drive up to eighteen 350mA white LEDs from a nominal 12V input, delivering in excess of 25 Watts.
Toshiba announces new 60V-2.5A n-channel MOSFET for battery voltage boosting
Toshiba Electronics Europe (TEE) has introduced a 60 Volt semi-power MOSFET within its line-up of small signal MOSFET (S-MOS) devices. The new SSM3K318T is ideally suited for battery voltage boosting in white light emitting diode (LED) backlight applications. The common load switching application in portable devices can be operated from the battery voltage with low voltage MOSFETs of 20V maximum rating. However for LED backlighting applications with series connection of white LEDs, voltages need to be boosted to higher levels leading to maximum drain-source voltage requirements of 60V. With a maximum drain current rating of 2.5A the small size Toshiba SSM3K318T n-channel power MOSFET is well suited to boost a battery voltage to the level needed to turn on LED arrays, with both high speed switching and high efficiency.
High Power Multiphase Step-Down DC/DC Controller Features Differential Remote Sensing, Active Voltage Positioning & Stage Shedding Technology
Linear Technology introduced the LTC3856, a two-phase single output high efficiency (up to 95%) synchronous step-down DC/DC controller with PolyPhase® operation, differential output voltage sensing and integrated phased-lock loop (PLL) synchronization. Up to 12 phases can be paralleled and clocked out of phase to minimize input and output filtering requirements for high current applications (up to 300A). The differential amplifier provides remote output voltage sensing of both the positive and negative terminals, enabling high accuracy regulation independent of IR losses in trace runs, vias and interconnects. Applications include high current ASIC and FPGA supplies, power distribution buses, high power audio amplifiers and network servers.
Infineon Launches 3rd Generation High Speed 600 V and 1200 V IGBTs
Infineon Technologies today introduced its 600V and 1200V High Speed 3 (3rd generation) IGBT product family optimized for high frequency and hard switching applications. The device family sets a new benchmark in reduced switching losses and best-in-class efficiency and is designed to address topologies switching at up to 100kHz.