Power ICs
TI introduces 3-MHz, 2-A DC/DC converters for portable electronics
Texas Instruments today introduced two highly efficient 2-A step-down DC/DC converters for portable electronics applications. The TPS62065 and TPS62067 3-MHz synchronous converters reduces board space and helps extend battery life by providing up to 95 percent power efficiency from a tiny 2-mm x 2-mm x 0.75-mm SON package.
6A, 4MHz, Synchronous Step-Down Regulator in a 3mm x 5mm QFN
The LTC3616 is a high efficiency, 4MHz synchronous buck regulator from Linear Technology that incorporates a constant frequency, current mode architecture. Low resistance internal switches allow the LTC3616 to deliver up to 6A of continuous output current from a 3mm x 5mm QFN package and its low dropout operation allows the output voltage to range from 0.6V to just millivolts below VIN. The LTC3616 operates from an input voltage of 2.25V to 5.5V, making it ideal for single-cell Li-Ion applications as well as 3.3V or 5V intermediate bus systems. Its switching frequency is user programmable from 300kHz to 4MHz, enabling the use of tiny, low cost capacitors and inductors.
20V Step-Down DC-to-DC Non-Synchronous Regulators Simplify Intermediate Power Bus and Point-of-load Power Designs
Analog Devices, introduced the ADP2300 and ADP2301 dc-to-dc switching regulators, the most recent in their growing portfolio of integrated power management switching regulators. The new 20V 1.2A (amp) step-down, dc-to-dc switching regulators integrate a high-side MOSFET that delivers power conversion efficiencies greater than 90 percent. The new regulators also feature internal loop compensation, integrated soft-start circuitry and bootstrap diodes to enable high-density solutions for intermediate bus generation and point-of-load regulation. The highly integrated ADP2300 and ADP2301 are available in small TSOT packages.
Analog Devices Expands Range of Constant On-Time, Synchronous Buck Controllers
Analog Devices introduced two current-mode, synchronous buck controllers that support input-power voltages ranging from 2.95 V to 20 V. The ADP1870 and ADP1871 synchronous buck controllers provide superior transient response through the use of a constant on-time, current-mode control system. The devices are suited to intermediate rail or point-of-load generation in consumer, industrial and instrumentation, and telecommunications and networking applications.
Dual Output High Efficiency Synchronous DC/DC Controller Draws Only 50uA in Battery-Powered Systems
Linear Technology has introduced the LTC3857/-1, an ultralow quiescent current, 2-phase dual output synchronous step-down DC/DC controller that draws only 50uA when one output is active and only 80uA when both outputs are enabled. With both outputs shut down, the LTC3857/-1 draws a mere 8uA.
Fairchild Semiconductor's PowerTrench® N-Channel WL-CSP MOSFETs Save Battery Life, Board Space in Portable Applications
Design and component engineers for portable applications, such as cell phones, portable medical devices and portable media players, need efficient and space-saving devices for their designs. Fairchild Semiconductor's (NYSE: FCS) N-Channel MOSFETs, the FDZ192NZ and FDZ372NZ, answer that need by providing lower RDS(ON) ratings, increasing efficiency and extending battery life, through the use of advanced PowerTrench® process technology.
Fairchild Semiconductor Minimizes Power Losses in Multi-Stage Power Supplies
To meet ENERGY STAR regulations and reduce their carbon footprint, power-electronic design teams continue to push efficiency towards the 100 percent rating, bringing higher system efficiency to PCs, servers, industrial power supplies and consumer electronics. Fairchild Semiconductor (NYSE: FCS) has leveraged its expertise in power to develop a CCM PFC controller for 300W to 2kW power supply designs that bring high system efficiency, high power factor and low THD. Through its high level of integration, this CCM PFC controller eliminates 54 external components.
MAX8922L: Li+ battery charger has GSM test mode in a 6mm2 TDFN
Maxim introduces the MAX8922L, a 30V, single-input lithium-ion (Li+) charger with a 2.3A GSM test mode. The inclusion of a GSM test mode facilitates production-line calibration and testing of devices with a Micro-USB connector. Using this charger, designers can quickly calibrate their GSM phones without having to install a battery. The MAX8922L is well suited for GSM, EDGE, UMTS, and CDMA cell phones.
PowerDI5 bipolars from Diodes Incorporated bring big space savings
Diodes Incorporated has announced its first transistor products in its miniature PowerDI5 surface mount package. Designed on the company's 5th generation matrix emitter process, a range of 12 NPN and PNP transistors has initially been released, helping designers to significantly raise power densities and shrink solution size.
TI switch-mode standalone battery charge controllers provide faster, cooler charging for 5-V to 28-V applications
Texas Instruments today introduced three new switch-mode standalone battery charger ICs for lithium-based battery-powered applications with a 5-V to 28-V input. These devices provide highly accurate and efficient charging in a small package for mass market applications, such as industrial handhelds, mobile Internet devices (MIDs), netbooks, power tools and portable medical devices.
MAX16070/71: 12-/8-channel system monitors integrate current monitoring and nonvolatile fault registers
Maxim introduces the MAX16070/MAX16071, flash-configurable system monitors that supervise 12/8 voltages plus one current. Designed to simplify power-management schemes in multivoltage systems, these devices feature an integrated current monitor, nonvolatile fault registers, and an easy-to-use graphical configuration tool. The MAX16070/MAX16071 provide ±1% accurate voltage monitoring for networking, telecom, server/storage, and other complex systems where high reliability is critical.
Toshiba Electronics launches high-performance power MOSFETs for applications to 650V and 20A
Toshiba Electronics Europe (TEE) has announced a new family of power MOSFETs that will deliver improved efficiency and faster switching speeds to applications operating with voltages up to 650V and currents to 20A. The new TK series of devices will be ideal for a wide variety of new and emerging power supply applications including power factor correction (PFC) designs and lighting ballasts.
60V Input Dual Output Synchronous Step-Down DC/DC Controller
Linear Technology Corporation introduces the LTC3890/-1, a high voltage dual output synchronous step-down DC/DC controller that draws only 50µA when one output is active and 60µA when both outputs are enabled. With both outputs shut down, the LTC3890/-1 draws a mere 14µA. The 4V to 60V input supply range is designed to protect against high voltage transients, continue operation during automotive cold crank and cover a broad range of input sources and battery chemistries.
Analog Devices - Integrated Lithium-Ion Battery Protection Circuit And Safety Monitor
Lithium-ion (Li-ion) batteries are growing in popularity as energy storage reservoirs for high-voltage energy, industrial and automotive applications, such as wind turbines, photo-voltaic cells, and hybrid electric vehicles, and this has spurred demand for safer, higher performing battery monitoring and protection systems.
AUIPS7111S Intelligent Power Switch from IR Delivers Ultra Low On-State Resistance for 24V Automotive Applications
International Rectifier has introduced the AUIPS7111S high-side intelligent power switch with ultra low on-state resistance (RDS(on)) for harsh 24V automotive environments such as under-the-hood truck junction boxes.
Allegro MicroSystems Announces New High Power LED Driver For Medium LCD Display Backlighting
Allegro MicroSystems, Inc. introduced a new high power LED driver with output disconnect for backlighting medium LCD displays. This new driver is a robust solution targeting numerous applications within the automotive market. Typical applications include in-dash navigation systems, automotive infotainment, and back-up camera displays. A commercial version is also available for industrial and consumer applications.
AUIPS7111S - IR's Intelligent Power Switch Delivers Ultra Low On-State Resistance for 24V Automotive Applications
International Rectifier today introduced the AUIPS7111S high-side intelligent power switch with ultra low on-state resistance (RDS(on)) for harsh 24V automotive environments such as under-the-hood truck junction boxes. The AUIPS7111S features an RDS(on) of 7.5 mOhm (max) at 25°C, and offers a comprehensive set of protection features including over-current and over-temperature shutdown in addition to an active clamp circuit to ensure safe reliable switching, and protection under repetitive short circuit conditions.
Programmable 2A 2-Cell Supercap Charger with Automatic Cell Balancing in a Compact 9mm2 Package
Linear Technology Corporation introduces the LTC4425, the latest in a family of 2-cell supercapacitor chargers for addressing high peak power, data backup and "dying gasp" needs in portable and data storage applications. The device employs a linear CC-CV architecture with thermal limiting to charge two supercapacitors in series to a programmable output voltage from a Li-Ion/Polymer battery, a USB port, or other 2.7V to 5.5V current-limited supply.
Atmel Introduces First Solution to Support Active Cell Balancing in High-cell-count Li-Ion Battery Packs
Atmel today announced that its battery management circuit ATA6870 is the industry's first solution that features active cell balancing with capacitors or inductors for high-cell-count Li-Ion batteries supporting supply voltages up to several hundreds volts such as used in electrical/hybrid vehicles, e-bikes or uninterruptible power supplies.
Power Integrations’ New TOPSwitch-JX Power Conversion IC Family Enables 85 mW No-Load
Power Integrations launched TOPSwitch-JX, a highly integrated family of 16 power conversion ICs incorporating a 725 V power MOSFET for use in flyback power supplies. The novel TOPSwitch-JX multi-mode control algorithm maximizes power efficiency across the entire load range. High efficiency at full power minimizes power wasted during normal operation and reduces the complexity and expense of thermal management on the system. At low power levels, high efficiency enables adapters with extremely low no-load consumption and maximizes power available to the system in standby mode for applications constrained by standards and regulatory controls.
Synchronous Boost Regulator from Microchip Enables Longer-Lasting Battery Applications
Microchip announces the MCP1640 Synchronous Boost Regulator, which features an operating voltage down to 0.35V, quiescent current as low as 19µA, and shutdown current of less than 1µA. With integrated dual FET transistors and output currents up to 350mA, the 500kHz MCP1640 regulator enables compact, longer-lasting battery applications in the consumer electronics market among others.
I2C Battery Gas Gauges for Single Li-Ion Cells Offers 1% Accuracy
Linear Technology Corporation introduces the LTC2941/LTC2942 battery gas gauges with an I2C interface for 2.7V to 5.5V systems. Unlike most coulomb counters that infer charge by sampling the current and integrating digitally, the LTC2941/LTC2942 use a continuous-time analog integrator to measure charge directly, resulting in minimal offset and gain error and better overall charge accuracy. The LTC2941 measures the charge flowing in and out of a battery to within 1% accuracy at room temperature. The LTC2942 does the same while also incorporating a 14-bit No Latency Δ∑ ADC to measure battery voltage and die temperature to within 1.3% and ±5°C accuracy, respectively.
MAX16067/68: 6-channel system managers with nonvolatile fault memory facilitate diagnostics
Maxim introduced the MAX16067/MAX16068, flash-configurable sequencers/monitors that simplify power management and fault diagnostics. These devices integrate a ±1%-accurate ADC for voltage monitoring/sequencing in complex systems where high reliability is critical. Additionally, they feature nonvolatile fault registers to store and read back fault data. An easy-to-use graphical configuration tool eliminates the need for tedious, time-consuming programming of complex devices like CPLDs and microprocessors. The MAX16067/MAX16068 are well suited for networking, telecom, servers, and data-storage applications.
NEC Electronics - Four New Intelligent Power Devices for Automotive Lighting Applications
NEC Electronics announced four new intelligent power devices (IPDs), the µPD166017, µPD166019, µPD166020 and uPD166021. Each high-side IPD is applicable for automotive lighting and other critical vehicle loads. Designed for on-board electronic control units (ECUs) typically used in head- and fog-light applications, the new devices, or power ICs, have an embedded power MOSFET for switching and a control chip for protection features in a single package.
LT3758-100V Input DC/DC Controller Generates Positive or Negative Regulated Output
Linear Technology has announced the LT3758, a high input voltage DC/DC controller for boost, flyback, SEPIC and inverting power supply applications, capable of generating either positive or negative regulated output voltages. The LT3758 has two voltage feedback error amplifiers and reference voltages. One set is for positive output voltages, the other is for negative output voltages, both off a single feedback pin, making the LT3758 a highly versatile DC/DC controller for many types of power supply designs.
OPTEK's High Voltage Optoisolator
Providing power electronics design engineers with a high voltage device capable of high speed digital data transmission, TT electronics OPTEK Technology has developed an optical isolator that delivers AC and DC voltage isolation up to 16KV while achieving digital data transmission rates of 2Mbd. Designated OPI1268, the UL-recognized high voltage optoisolator is designed for power isolation in high voltage PC board circuits in industrial electronics systems, medical electronic equipment and office machines.
Dual Positive/Negative ±20VIN ±150mA LDO Offers 20µVRMS Noise
Linear Technology Corporation announces the LT3032, a dual, low noise, positive/negative low dropout voltage linear regulator. The device delivers up to ±150mA continuous output current on each channel with a 300mV dropout voltage at full load. The LT3032 features a wide input voltage range of ±2.3V to ±20V, delivering adjustable output voltages from ±1.22V to ±20V. A single capacitor provides ultralow noise operation only 20µVRMS across a wide bandwidth of 10Hz to 100kHz for the positive output rail, and only 30µVRMS for the negative rail. The LT3032's output voltage tolerance is highly accurate at ±3% over line, load and temperature. The device's wide input and output voltage ranges, fast transient response and low quiescent current of 30µA per channel (operating) and <3µA in shutdown (total) make it an excellent choice for portable battery-powered systems that require optimum run time, and for use in bipolar op amp/instrumentation power supply and low noise supply applications.
MAX17122: Power-management IC provides a highly integrated, cost-effective solution for LCD HDTV panels
Maxim Integrated Products announces the MAX17122, a multiple-output power-supply IC that integrates three regulators whose high-efficiency and fixed-frequency operation allow the use of small inductors and capacitors. This results in a compact and cost-competitive solution for the power requirements of thin-film transistor (TFT) LCD HDTV panels. The MAX17122 operates from 8V to 16.5V input voltages and is optimized for applications running directly from 12V regulated supplies.
Infineon Announces 25V OptiMOS Voltage Regulation MOSFET and DrMOS Families Achieving 93 Percent Efficiency in Typical Server Applications
Improving the energy efficiency of computing and telecommunications applications, Infineon Technologies AG today at the Applied Power Electronics Conference & Exposition 2010 announced additions to its OptiMOS power MOSFET portfolio. Infineon introduced an OptiMOS 25V device family that is optimized for voltage regulation in power supplies for computer servers and telecommunications / data communications switches. The new MOSFETs are also integrated into the TDA21220 DrMOS devices that are compliant with the Intel DrMOS specification.
IR Introduces Industry’s First Commercially Available GaN-based iP2010 and iP2011 Integrated Power Stage Devices Utilizing IR’s Revolutionary GaN-based Technology Platform, GaNpowIR™
International Rectifier today introduced the industry's first family of commercial integrated power stage products utilizing IR's revolutionary Gallium Nitride (GaN)-based power device technology platform. The iP2010 and iP2011 family of devices is designed for multiphase and point-of-load (POL) applications including servers, routers, switches and general purpose POL DC-DC converters.
IR Introduces 20V, 25V and 30V MOSFETs in PQFN Package for ORing and Motor Drive Applications
International Rectifier today introduced a family of HEXFET power MOSFETs including the IRFH6200TRPbF that delivers the industry's lowest on-state resistance (RDS(on)).
STMicroelectronics Unveils Ultra Low-Loss Rectifier Diodes for More Efficient and Greener Power Supplies
STMicroelectronics has introduced a new family of high-efficiency power rectifiers that will help product manufacturers achieve energy-efficiency approvals, such as 80 PLUS. Saving energy has become a major selling point for power-supply and computer manufacturers. The 80 PLUS incentive program proposes to increase power supply efficiency, which helps reduce global carbon emissions by reducing wasted energy.
RFMD® Introduces PowerSmart™ Power Platforms
RF Micro Devices, Inc today introduced PowerSmart power platforms, a new product category designed to reshape the future of multimode, multi-band cellular RF architectures. RFMD's PowerSmart platforms feature a revolutionary new RF Configurable Power Core, which leverages industry-leading functional efficiency and delivers state-of-the-art processing of all known cellular communications modulation schemes, including GSM/GPRS, EDGE, EDGE Evolution, CDMA, 3G (TD-SCDMA or WCDMA/HSPA+) and 4G (LTE or WiMAX). With PowerSmart, RFMD is enabling a new generation of global smartphones and mobile nternet devices requiring three or more bands of 3G or 4G.
National Semiconductor Introduces Industry’s First PMBus System Power Management and Protection IC
National Semiconductor Corp. today announced the industry's first system monitoring, protection and control integrated circuit with on-chip power management bus (PMBus) support. The LM25066 provides designers of blade servers, storage networking systems, routers/switches and modular subsystems with a solution that improves system reliability and reduces operating expenses in data centers.
38VIN Dual Synchronous Step-Down DC/DC Controller with 1% Accurate Pin-Selectable Output Voltages
Linear Technology Corporation announces the LTC3865/-1, a 95% efficient, dual output synchronous step-down DC/DC controller with 2-pin selectable VOUT programming, a feature that saves 4 precision feedback resistors. The output voltages maintain a tight ±1% accuracy including initial set-point, a -40°C to 125°C operating temperature range and load/line regulation. Nine selectable output voltages ranging from 0.6V to 5V are possible. The 4.5V to 38V input voltage range encompasses a wide variety of applications including most intermediate bus voltages and battery chemistries. The strong on-board N-channel MOSFET driver enables the use of high power external MOSFETs to produce output currents as high as 20A. Applications include point-of-load regulators in medical, industrial, automotive, datacom, telecom and multifunction printers.
RFMD Commences Volume Production of WCDMA/HSPA+ Power Amplifiers
RF Micro Devices, Inc. announces it has commenced high-volume production of its RF720x WCDMA/HSPA+ power amplifiers (PAs). RFMD's RF720x product family is comprised of seven high performance PAs designed for smartphones and 3G devices implementing mode-specific, band-specific front end architectures. The RF720x product family accommodates all major WCDMA/HSPA+ bands and band combinations and is optimized to mate with reference designs from Qualcomm as well as other leading open market 3G chipset suppliers.
4% Accurate Programmable Average Input Current Limit Buck-Boost DC/DC Converter for High Peak Power Applications
Linear Technology announced the LTC3127, a 96% efficient, synchronous buck-boost converter that delivers up to 1A of output current to a regulated output voltage with inputs above, below or equal to the output. The LTC3127 features a ±4% accurate programmable average input current limit with a 200mA to 1000mA range, making it ideal for GSM modems or Supercapacitor chargers powered from sources with hard limits on output current. This enables system designers to maximize the current draw from a limited power source, significantly improving data rates or charging times.
TI unveils fully-integrated Fusion Digital Power dual power driver with onboard power MOSFETs
Texas Instruments introduced a digital power dual synchronous-buck driver with integrated power MOSFETs, protection blocks and monitoring features, which helps save board space and reduce component count by as much as 80 percent compared to industry standards. The UCD7242 provides designers the flexibility of two independent 10-A rails or one 20-A rail in a small package.
Octal PMBus Power Supply Monitor Manages DC/DC Converters Digitally
Linear Technology has introduced the LTC2978 Power Supply Monitor and Controller for digital management of up to eight 0V to 6V power supplies. Configuring multiple DC/DC converters in an already complex system can be a complicated design task when using passive components. Values defined by external trim resistors and capacitors such as startup time, setpoint value or switching frequency make a system inflexible.
CISSOID introduces a new family of P-channel high temperature power MOSFET transistors
CISSOID, leader in high temperature semiconductor solutions, introduced VENUS, their new family of High Temperature 30V P-channel power MOSFET Transistors guaranteed for operation from -55°C up to +225°C. The VENUS family of P-channel power MOSFETs named CHT-PMOS3002, CHT-PMOS3004 and CHT-PMOS3008 are rated respectively for 2A, 4A and 8A maximum drain current. They complement the SATURN family of N-channel MOSFETs introduced by the company in November 2009.
