Power ICs
IR Introduces Scalable Easy-to-Use, Versatile SupIRBuck Family for Energy-Efficient Computing and Consumer Applications
International Rectifier has expanded its SupIRBuck family of integrated point-of-load (POL) voltage regulators. The new IR347x and IR386x devices for energy-efficient computing and consumer applications feature hysteretic constant on-time (COT) modulators with adaptive dead-time control to achieve superior light load and full load efficiency.
TI power development kits for precision analog get the noise out
Texas Instruments introduced two power management development kits, which help designers generate the cleanest possible positive and negative voltage rails to power today's analog circuits. The new TPS54060 and TPS7A30/49 development kits remove switching noise and increase the performance of data converters, operational amplifiers, clocks and other signal chain devices.
Intersil - USB Port Power Supply Controllers Provide Precise, Adjustable, Over-Current Protection
Intersil introduced a new family of power controller devices designed to meet the power supply requirements of industry-standard USB devices. The ISL6185/6 provide port power for products based on the USB 2.0 and 3.0 interface standards, offering designers several current limit level options, all with an accuracy 3x better than competitive solutions. This results in more precise protection and increased design flexibility for today's USB power designs. In addition, the ISL6185/6 come in industry standard packages for easy, drop-in replacement as well as a new, smaller package for saving even more board space.
Fairchild - Synchronous Rectification Controller Compatible to Flyback and Forward Topologies; Multiple Operating Modes
In order to meet increased power efficiency demands and regulatory standards for desktop PCs, All-in-One (AIO) PCs and notebook adaptors, designers need secondary-side synchronous rectification (SR) controllers that can increase power efficiency while integrating more functions.
Maxim introduces a power-management IC solution for Samsung’s next-generation application processor
At the 2011 Mobile World Congress in Barcelona, Maxim announced a power-management IC (PMIC) solution for Samsung's Exynos 4210 application processor developed for handheld systems. Maxim's PMIC solution integrates the various firmware and circuitry required for managing power delivery and battery charging with system logic so that consumers can enjoy advanced multimedia functionality.
Power Integrations Announces Qspeed Family of Advanced Diodes
Power Integrations announced the immediate availability of the Qspeed family of advanced diodes. Qspeed diodes use a unique silicon-based process to combine an extremely low reverse recovery charge (QRR) with a very soft recovery waveform. Together, these features help designers optimize the efficiency and EMI performance of their power conversion circuits. Qspeed diodes are ideal for continuous conduction mode (CCM) boost power factor correction (PFC) circuits, and as output diodes for hard-switching applications. In PFC circuits, Qspeed diodes can provide an overall switching performance that is comparable to silicon-carbide (SiC) diodes at much lower cost.
MAX8989: Step-Down Converter with Linear Bypass Powers Multimode PAs in Mobile Handsets
Maxim introduced the MAX8989, a step-down converter designed to power PA (power amplifier) modules in mobile phones. The first DC-DC converter in the industry to support power management for multiple communication protocols (e.g., LTE, WCDMA, GSM, and EDGE), the MAX8989 is ideal for converged (multimode) PAs. This solution is utilized in Infineon's proven SMARTi(TM) UE2 RF engine platform, which delivers unparalleled flexibility and efficiency to multistandard cellular phone systems.
1.5MHz Synchronous Step-Down DC/DC Converter Offers Quiescent Current of Only 70uA
Linear Technology announces the LT3690, a 36V input capable, synchronous step-down switching regulator which can deliver up to 4A of continuous output current at efficiencies as high as 93%. The LT3690 operates within a VIN range of 3.9V to 36V, and offers transient protection to 60V, making it well suited for load dump and cold-crank conditions found in automotive applications. The LT3690's Burst Mode® operation requires only 70uA of quiescent current, ideal for applications such as automotive or telecom systems, which demand always-on operation and optimum battery life. Switching frequency is user-programmable from 170kHz to 1.5MHz, enabling the designer to optimize efficiency while avoiding critical noise-sensitive frequency bands. The combination of its 4mm x 6mm QFN-26 package and high switching frequency keeps external inductors and capacitors small, providing a compact, thermally efficient footprint.
Ultra-compact optical-coupled MOSFET with only 30 pA leakage current and 0.75 pF output capacitance
MSC now offers the new PS7901D-1A optical-coupled MOSFET from Renesas Electronics. Key features of this device are an output capacitance of only 0.75 pF and a low leakage current of just 30 pA. The PS7901D-1A comes in an ultra-compact 4-pin flat-lead package measuring only 2.9 mm x 2.3 mm.
Maxim MAX15053 - 2A synchronous buck integrates MOSFETs for up to 96% efficiency in a 1.6mm by 1.6mm package
Maxim introduced the MAX15053, a current-mode, synchronous DC-DC converter in a tiny 1.65mm x 1.65mm wafer-level package (WLP). This miniature step-down regulator integrates MOSFETs to simplify design, minimize EMI, and save board space while achieving conversion efficiency up to 96% at full load (2A). The MAX15053 operates from a fixed 1MHz switching frequency that allows for small external passive components and an all-ceramic-capacitor design, further minimizing total solution size. A peak-current-mode architecture ensures excellent load regulation while simplifying compensation. Offering both fixed-PWM and skip-mode operation, the MAX15053 is suitable for applications ranging from telecom, networking, and base-station equipment to portable devices such as notebooks.
Vishay Siliconix Dual 20 V P-Channel TrenchFET Gen III Power MOSFET Offers Industry's Lowest On-Resistance Down to 54 mΩ at 4.5 V in the 2 mm by 2 mm Footprint Area
Vishay today introduced a new dual 20 V p-channel TrenchFET Gen III power MOSFET with an 8 V gate-to-source voltage featuring the lowest on-resistance ever achieved for a dual p-channel device in the thermally enhanced PowerPAK SC-70 2 mm by 2 mm footprint area.
36V Input Dual 800mA Micropower Step-Down Regulator Has Integrated Power-On Reset & Watchdog Timer
Linear Technology Corporation announced the LT3688, a dual 800mA, 36V input step-down switching regulator with dual power-on reset and a watchdog timer. The LT3688's 3.8V to 36V input voltage range makes it ideal for load dump and cold crank conditions commonly found in automotive applications. Its dual 1.2A internal switches deliver up to 800mA of continuous output current from each channel at output voltages as low as 0.8V.
Intersil - Industry's First Fully Encapsulated Digital Power Module
Intersil extended its leadership in next-generation power modules by introducing the ZL9101M, an encapsulated, highly-integrated digital DC/DC power module designed for point-of-load (POL) power management in applications such as servers, telecommunications, networking and storage equipment.
Surface Mount 3A LDO is Easily Paralleled for High IOUT without Any Hot Spots
Linear Technology announces the LT3083, a 3A LDO that can be paralleled for heat spreading and higher output current, and is adjustable with a single resistor. This regulator is based on the same innovative architecture as its 1.1A predecessor, the LT3080, which uses a current source reference for single resistor output voltage setting. With the SET pins tied together, sharing the current and spreading the heat is accomplished between multiple regulators using a small length of PC trace as ballast, enabling multi-amp linear regulation in all surface-mount systems without heat sinks.
MAX17435/535: Highly integrated, 850kHz/500kHz SMBus-programmable battery chargers
Maxim Integrated Products introduces the MAX17435/MAX17535, highly integrated SMBus(TM) battery chargers capable of operating at 850kHz and 500kHz, respectively. The SMBus interface enables programming of the charge settings without changing external components, thus maximizing design flexibility. Programmable settings include charge current, charge voltage, input current limit, relearn voltage, and digital IINP voltage readback. Equivalent competitive solutions require the use of external components to program charge settings. The MAX17435/MAX17535 are ideal for notebook computers, ultra-mobile PCs (UMPCs), mobile internet devices (MIDs), and other battery-powered applications where space is critical.
Microsemi Launches Fifth-Generation Auto Mode 4-Port Power-over-Ethernet Power Source Equipment Manager
Microsemi Corporation announced the PD69104A, an Auto Mode 4-port Power-over-Ethernet (PoE) Power Source Equipment (PSE) Manager targeted at small and medium business (SMB) and small office/home office (SOHO) PoE applications.
Maxim MAX8982 - Single-chip PMICs for Icera's E400/E450 platform
Maxim introduced the MAX8982A/MAX8982X, power-management ICs (PMICs) for LTE/WCDMA/GSM/GPRS/EDGE data cards based on Icera's E400/E450 platform. These devices integrate four high-efficiency step-down converters and nine low-dropout linear regulators (LDOs) to power all RF and baseband circuitry. This integration completely eliminates external components, including the external converter normally required for GSM power amplifier (PA) modules. They thus reduce solution size by 60% and BOM cost by over $1.50, making them ideal for USB dongles (MAX8982A) and PC cards (MAX8982X).
IR’s New DirectFETplus Power MOSFET Family for DC-DC Switching Applications Improves Efficiency up to 2 Percent
International Rectifier has introduced a family of DirectFET plus power MOSFETs featuring IR's new generation of silicon that sets a new standard in efficiency for 12 V input synchronous buck applications including next-generation servers, desktops, and notebooks.
Sub-Microamp Quiescent Current LDOs Extend Battery Life in Wireless Devices
Analog Devices introduced four low-dropout regulators (LDOs) that address the size, power dissipation and power-supply-rejection requirements of wireless mobile devices. The ADP160, ADP161, ADP162 and ADP163 ultra-low-quiescent-current LDOs extend the battery life of portable devices by drawing only 560 nA (typical) at no load and 42 μA of quiescent current (typical) at full load. These LDOs provide superior 70 dB PSRR (power-supply-rejection ratio) at 60 Hz, which is more than twice that of competing LDOs at full load current. The new ADP16x series LDOs are designed for applications such as power meter reader/data terminals, portable industrial, medical measurement devices and remotely located equipment operating from batteries or solar power.
Torex - 1A, 0.5v Ultra-low Dropout Voltage Regulator With Soft-start
The new XC6602 series from Torex is a high speed and highly accurate LDO which can supply up to 1A of output current while consuming only 110µA. With the help of a bias voltage that can be set between 2.5V and 6.0V, the XC6602 operates with input voltages from 0.5V to 3.0V and is readily available with fixed output voltages from 0.5V to 1.8V in 0.1V increments.
Smaller, more accurate Voltage Detectors from Torex
With improved temperature characteristics (±50ppm/degC) and a tighter Detect Voltage tolerance (±0.8%), the new XC6126 series from Torex offers designers a more accurate, lower cost solution for simple RESET and battery monitoring applications.
IR - Rugged Automotive Qualified Planar MOSFETs
International Rectifier has introduced a family of automotive qualified planar MOSFETs for a variety of applications used in Internal Combustion Engine (ICE), hybrid and full electric vehicle platforms. The family of new devices utilizing IR's proven planar technology includes 55 V and 150 V standard gate drive N Channel MOSFETs, and -55 V and -100 V standard gate drive P channel MOSFETs suitable for high-side switch applications, requiring no additional charge pump for gate drive. The 30 V, 55 V and 100 V logic level gate drive N Channel MOSFETs simplify gate drive requirements and help reduce board space and component count. All of the new devices are optimized for low on-state resistance (Rds(on)).
1V to 16V hot-swap IC with precision current-sense output
Maxim introduced the MAX5977, a hot-swap controller for 1V to 16V backplanes. This device features an integrated current-sense amplifier that provides a 1% accurate current output over a 10mV to 50mV input voltage range. This allows system designers to precisely monitor/measure load current in high-availability systems. A calibration mode allows the current-sense amplifier to be fine-tuned for production testing of the design. The MAX5977 is well suited for networking, base station, storage, and computer server line cards requiring high reliability and precision current monitoring.
Cree Launches Industry’s First Commercial Silicon Carbide Power MOSFET; Destined to Replace Silicon Devices in High-Voltage (≥ 1200-V) Power Electronics
Cree, Inc. has introduced the industry's first fully qualified commercial silicon carbide power MOSFET. This establishes a new benchmark for energy-efficient power switches and can enable design engineers to develop high-voltage circuits with extremely fast switching speeds and ultralow switching losses.
Compact N-channel power MOSFETs with 40 percent FOM index improvement
MSC now offers the new NP75N04YUK N-channel power MOSFET from Renesas Electronics. Key features of this device are the capability to handle current flows up to 75 A and an on-resistance of only 3.3 mΩ. The NP75N04YUK comes in a compact HSON-8 package with external dimensions of 6 mm x 5.15 mm.
500-mA LDOs Double the Power Rejection of Competing Devices to Improve Portable and Battery-powered Equipment Performance
Analog Devices introduced two low-quiescent-current LDOs (low-dropout linear regulators) that deliver outstanding supply-rejection performance to help battery-operated portable equipment run longer and more efficiently. The new ADP124 and ADP125 LDOs have excellent PSRR (power-supply-rejection ratio) performance of 60 dB at 100 kHz, which is twice that of the nearest competing LDOs, and achieve low noise of 35 µVrms (micro-volts per root mean squared) at 1.8 V output. Operating from an input voltage between 2.3 V and 5.5 V and providing up to 500 mA of output current down to a 0.8 V output, the new LDOs also feature a low quiescent current of 210 μA and a 130 mV dropout voltage at a 500 mA load, which further improves portable equipment operating efficiency over a wide input-voltage range.
Dual Output Synchronous Step-Down DC/DC Controller with Digital Power System Management via I2C/PMBus Interface & Onboard EEPROM
Linear Technology announced the LTC3880/-1, a dual output high efficiency synchronous step-down DC/DC controller with I2C-based PMBus interface for digital power system management. The device combines best in class analog switching regulator performance with precision mixed signal data conversion for unsurpassed ease of power system design and management, supported by the LTpowerPlay software development system with easy-to-use graphical user interface (GUI).
Vishay - Four 45 V TMBS Trench MOS Barrier Schottky Rectifiers for Solar Bypass Applications in SMPC and Axial-Leaded Packages
Vishay today expanded its TMBS Trench MOS Barrier Schottky rectifiers for solar bypass applications with four new 45 V devices offering eSMP® surface-mount and axial-leaded package options. The devices released today are designed to enable higher current densities in low-voltage, high-frequency inverters, and solar cell junction boxes, where they will be used as bypass diodes for photovoltaic solar cell protection.
Nat Semi Adds Three High Output Voltage Products to SIMPLE SWITCHER Power Module Family
National Semiconductor introduced three new SIMPLE SWITCHER® power modules, the first to drive high output voltage applications in a variety of markets including industrial, communications infrastructure and military. The easy-to-use LMZ14201H, LMZ14202H and LMZ14203H power modules provide the efficiency of a synchronous switching regulator with the simplicity of a linear regulator, eliminating the external inductor and complex layout placement challenges typical of switching regulator designs.
Power Integrations’ TOPSwitch-JX Power Conversion ICs Now Available in Low-Profile, Thermally Efficient, Surface-Mount Package
Power Integrations announced the availability of its industry-leading TOPSwitch-JX power conversion IC in an innovative eSOP low-profile power package. This slender new surface-mount package is suited for applications without heatsinks up to 65 W in compact, open-frame installations such as slim LCD TV auxiliary power, set-top boxes, PC standby, and DVD players. In notebook, netbook, and printer adapters, the thermally efficient eSOP package can supply up to 40 W using only the PCB for thermal management.
400mA Synchronous Step-Up DC/DC Converter with Maximum Power Point Control & 250mV Start Up for Energy Harvesting Applications
Linear Technology has announced the LTC3105, a high performance, synchronous boost converter that incorporates maximum power point control (MPPC) and starts up with inputs as low as 250mV. The LTC3105 operates over an extremely wide input range of 0.2V to 5V, making it ideal for harvesting energy from high impedance alternative power sources, including photovoltaic cells, thermoelectric generators (TEGs) and fuel cells. The LTC3105's internal 400mA synchronous switches maximize efficiency while its Burst Mode operation offers quiescent current of only 22uA, further optimizing converter efficiency overall operating conditions. A user-programmable MPPC set point maximizes the energy that can be extracted from any power source without collapsing its internal voltage.
Rectifiers from Diodes Incorporated increase efficiency and reduce form factor
Diodes has expanded its portfolio of patented Super Barrier Rectifiers (SBR) with the introduction of 12A and 15A rated devices in the compact PowerDI5 package. As the output rectifiers in space limited SMPS design, the SBRs are characterized by an ultra low forward voltage drop that delivers better efficiency and cooler operation than standard Schottky rectifiers.
Renesas Electronics Introduces Power MOSFETs with Compact Package and Improved Performance for Automotive Applications
Renesas introduced today 32 new N-channel power metal-oxide-semiconductor field-effect transistors (MOSFETs) with voltage tolerances of 40 and 55 volts (V). The new power MOSFETs include the NP75N04YUK device, featuring a compact HSON package with one-half the mounting area of the existing TO-252 package and the ability to handle current flows of up to 75 amperes (A).
High-voltage power MOSFET with ultra-low on resistance provides low power consumption
MSC now offers the new RJK60S5DPK high-voltage power MOSFET von Renesas Electronics. Key features of this device are an ultra-low on-resistance of 150 mΩ and a gate-drain charge capacitance (Qgd) of only 6 nC at 10 A maximum current (ID) and 10 VGSS voltage tolerance.
60V Synchronous Step-Down DC/DC Controller Specified up to 150°C
Linear Technology Corporation introduces the LTC3810H-5, a high input voltage synchronous step-down DC/DC controller with guaranteed specifications for junction temperatures as high as 150°C.
MAX14566E: Compact charger identification switch supports USB, Apple, and CCSA YD/T charging
Maxim introduced the MAX14566E, a USB charger identification solution that supports the charging of portable devices from notebook computers, even when the computer is in sleep or hibernate mode. This switch supports the USB Battery Charging Specification, Revision 1.1, as well as the CCSA YD/T 1591-2006 standard for the Chinese market. The compact (2mm x 2mm) MAX14566E saves board space and reduces software overhead as compared to discrete implementations.
MAX15040: 4A switching regulator simplifies designs and improves reliability
Maxim introduced the MAX15040, a low-voltage (2.4V to 3.6V), synchronous switching regulator in a 2mm x 2mm wafer-level package (WLP). This miniature step-down regulator integrates MOSFETs to simplify design, minimize EMI, improve reliability, and save board space.
High Precision, Voltage Detector, with built in Delay and Manual Reset function
Introducing the XC6127 from Torex; this new family of Voltage Detectors utilises a newly revised internal circuit which offers improved Temperature Characteristics (±50ppm/degC) and higher accuracies with a tolerance of ±0.8% now standard.
Semtech Expands Efficient, High-Performance EcoSpeed Regulator Platform with 24V, 3A Device
Semtech has expanded its efficient, high-performance EcoSpeed regulator platform to include a 3A output current device with a wide input voltage range from 5.5 to 24V. The new SC410 joins Semtech's existing platform of EcoSpeed converters, which includes a broad selection of output current capabilities ranging from 3A to 30A. The wide input voltage range of the SC410 makes it ideal for use with lithium ion battery packs and charging adapters or regulated 12V or 18V main power supply rails in embedded applications for industrial, networking/communications, office automation and higher-end consumer digital electronic products.
Renesas Electronics Introduces New High-Voltage Power MOSFET Product with Approximately 52 Percent Lower Loss
Renesas today announced the availability of a new high-voltage N-channel power metal-oxide-semiconductor field-effect-transistor (MOSFET) product, the RJK60S5DPK, for power supply units. The new power MOSFET delivers high efficiency and low power consumption for PC servers, communication base stations, and solar power generation systems.
