Power ICs
New Micrel DC-DC Converter Family Enables Point-of-Load Designs With High Power Density And High Efficiency
Micrel, Inc. today rolled out its new SuperSwitcher IITM family of integrated MOSFET buck regulators for high power density DC-DC applications. The new MIC26xxx family comprises six DC-DC buck regulators leveraging Micrel's proprietary HyperSpeed ControlTM and HyperLight Load® architecture. The devices target distributed power systems, communications networking and infrastructure, and industrial applications. The MIC26601/901/1201 and the MIC26603/903/1203 are currently available in volume quantities, with 1,000 quantity pricing starting at $1.58/$1.74/$1.88 and $1.62/$1.77/$1.92 respectively. Samples can be ordered here.
Microchip’s 3-phase BLDC fan motor driver is industry’s first with resistor-programmable, sensorless sinusoidal architecture
Microchip announces the expansion of its sinusoidal, sensorless, 3-phase BLDC fan motor driver portfolio with the MTD6505, the industry's first and only standalone, resistor-programmable driver that enables the selection of multiple back-EMF coefficient ranges. This unique feature allows engineers to design for a wide variety of 3-phase BLDC fan characteristics with a single cost-effective and flexible device, thus saving time and money by standardising multiple product lines on one driver and very few external components.
Texas Instruments introduces industry’s most accurate amplifier for high common-mode voltage applications
Texas Instruments Incorporated today introduced the industry's most accurate difference amplifier for high common-mode voltage applications up to +275 V. With a best-in-class common-mode rejection ratio (CMRR) of 100 dB, the INA149 increases overall measurement accuracy by 2x compared to the competition and is the first high-voltage difference amplifier with a specified minimum 90-dB CMRR performance in harsh, high-temperature environments up to 125 degrees C.
Isolated Power Factor Corrected Offline Regulator Needs No Opto
Linear Technology Corporation announces the LT3798, an isolated flyback controller with single stage active power factor correction (PFC). A power factor of greater than 0.97 is accomplished by actively modulating the input current, eliminating the need for an extra switching power stage and associated components. In addition, no opto-isolator or signal transformer is required for feedback since the output voltage is sensed from the primary-side flyback signal.
New 1 watt converters for low power applications
DENGROVE introduce RECOMs new 1 watt converters which are designed for low power applications. The new R1S/E-, RB/E- and RO/E-converter series with low rated power achieve excellent efficiency up to 84%. More importantly, they reach 70% efficiency even at 20% load. Low heat losses allow these converters to be used at the extended ambient temperature range of -40°C to +100°C without derating.
Diodes Incorporated Packages MOSFETs for Cooler Operation
Diodes Incorporated has announced the introduction of its first MOSFETs to be housed in the miniature DFN1212-3 package. With a junction to ambient thermal resistance (Rthj-a) of 130ºC/W, the package supports a power dissipation of up to 1W under continuous conditions, ensuring significantly cooler operation than that achievable with existing footprint-compatible SOT723 alternatives characterized by an Rthj-a performance of 280ºC/W.
CISSOID Releases HADES, a High Temperature and High Reliability Isolated Gate Driver for High Density Power Converters
CISSOID launched HADES, the first isolated gate driver solution designed to drive high temperature power transistors, specifically (but not exclusively) Silicon carbide (SiC) and Gallium nitride (GaN) fast-switching devices. With HADES, system engineers can develop power converters that are 5 times smaller and lighter than before, with better efficiency. They will also get power converters able to operate in high temperature ambiance if required. No matter what the ambient temperature is, the life time of the system will be an order of magnitude longer than traditional solutions.
Renesas Electronics Introduces Compact Lithium-ion Battery Charging Control IC Supporting USB Charging
Renesas Electronics has announced a charging control integrated circuit (IC), the R2A20055NS, that achieves further miniaturization and safe charging control for single-cell lithium-ion batteries used in portable devices.
15V, 300mA Synchronous Buck Converters with Only 1.8µA Quiescent Current
Linear Technology announces the LTC3103 and the LTC3104, 15V, fixed frequency synchronous buck converters capable of delivering 300mA of continuous current to output voltages from 0.6V to 13.8V. The LTC3103 consumes just 1.8µA of quiescent current, while the LTC3104 (which offers a 10mA programmable LDO output) requires only 2.6µA of quiescent current. These devices are ideal for a wide range of battery-powered applications including industrial control power, remote sensor networks, low power wireless systems and energy harvesting applications. Both devices operate from an input voltage range of 2.5V to 15V facilitating operation from a wide range of input sources, including single- or multi-cell batteries, supercapacitors and system rails.
TI introduces power management IC for 32-Bit C2000 real-time control MCUs
Texas Instruments Incorporated has introduced a complete power management solution for TI's C2000 real-time control, 32-bit microcontrollers (MCUs) and other DSP and FPGA processors. The TPS75005 highly integrated power circuit comes in a thermally enhanced 5-mm x 5-mm QFN package, combining two low-noise, 500-mA low-dropout linear regulators (LDOs) and three supply voltage supervisors to provide +/-5 percent power-rail accuracy for TI's F2833x, F2823x, F281x, F2801x and F280x microcontroller series.
IR’s IRS2500 µPFC Control IC Reduces Noise Sensitivity for Cost- Sensitive Electronic Ballast and SMPS Applications
International Rectifier has introduced the IRS2500S µPFC power factor correction (PFC) control IC for switch mode power supply (SMPS), LED drivers, fluorescent and HID electronic ballast applications. The IRS2500S µPFC controller can be configured to operate in critical conduction boost PFC or flyback configuration. The new device also features a total harmonic distortion (THD) optimization circuit to reduce line current harmonics. The controller has high noise immunity, simplifying design and reducing system cost.
Intersil’s New 10 Amp Buck Regulator Delivers Exceptional Efficiency and Power Density
Intersil Corporation has introduced its newest 10A integrated FET synchronous buck regulator featuring excellent efficiency and power density. The ISL95210 provides a very dense DC/DC converter solution with up to 45% total area reduction over alternative solutions. The device is a highly efficient, single-output buck regulator that requires only four external components. Intersil's patented R4 control architecture provides exceptional transient response with no external compensation components. The regulator is ideal for wide range of applications including point of load (POL) power supplies for computing and networking infrastructure equipment.
Analog Devices’ Ultra-low-noise LDOs Optimise Load Performance In Communications, Medical and Industrial Systems
Devices has introduced a pair of LDOs (low dropout regulators) with low noise, high power supply rejection, and excellent line and load transient response. The ADP7102 and ADP7104 LDOs achieve a 15 μVrms fixed-voltage noise figure, power supply rejection ratio (PSRR) of 60 dB at 10 kHz in 3-V operation, and feature reverse current protection to guard against shorts and sudden load discharges. The new LDOs are designed to maximise the load performance and yield higher data conversion accuracy and resolution in high-frequency communications infrastructure, medical imaging, and industrial and instrumentation applications.
Enpirion’s Newest DC-DC Converter Advances the Company’s Leadership in Power Management
Enpirion announced a new member of its power IC portfolio targeted at embedded computing as well as solid-state drives (SSDs). The Enpirion EN5339 3 Amp power system-on-a-chip (PowerSoC) integrates the controller, power MOSFETs, compensation network and inductor into one highly compact solution that significantly reduces the traditional engineering analysis and design effort associated with discrete DC/DC converter designs. Its small solution footprint and slim profile offers Enpirion's wide base of customers – who develop diverse form factors such as Ultra COM Express, PC104, Qseven, ATCA Advanced Mezzanine Cards (AMC), Compact PCI and others – an important new alternative. The EN5339 has already landed more than 20 design wins ahead of its official market release.
High-Voltage and Lowest Noise, Autozero Op Amp Extends System Uptime and Improves Sensor Performance
Maxim Integrated Products announces the MAX44251 a 20V, ultra-precise, low-noise dual op amp that extends maintenance system uptime and maximizes sensor performance. Proprietary autozero technology enables continuous self-calibration which, in turn, ensures system accuracy over time, temperature, and power-supply variations. The precision (< 6µV initial offset) over the wide 2.7V to 20V operating range is unmatched by the competition. This excellent precision improves system accuracy and minimizes errors during signal conditioning. The accuracy over the extended voltage range also makes the op amp more flexible for a range of designs and applications. The MAX44251 provides excellent RF immunity filters that remove the unwanted RF signals often found in industrial and medical applications. Superior efficiency and power savings come with no sacrifice in performance. The low 1.15mA current consumption per channel offers excellent 10MHz gain bandwidth and the industry's lowest noise (5.9nV/√Hz input referred voltage) for a high-voltage autozero op amp. The MAX44251 is ideally suited for high-voltage applications that require ultra-low noise and ultra-high DC precision, such as interfacing with pressure sensors, strain gauges, precision weight scales, and medical instrumentation.
Vishay Siliconix PowerPAIR Dual Asymmetric Power MOSFET Family Expands to Three Size Options, Including 3 mm x 3 mm
Vishay Intertechnology is expanding its PowerPAIR family of dual asymmetric power MOSFETs for low-voltage DC/DC converter applications with new devices that expand the series' voltage and package footprint options. The new devices make Vishay the only supplier to offer 3 mm by 3 mm, 6 mm by 3.7 mm, and 6 mm by 5 mm PowerPAIR form factors.
Dual Output Synchronous Step-Down Controller Produces 1.5VOUT From Up To 24VIN at 2MHz
Linear Technology Corporation introduces the LTC3838, a high frequency controlled on-time dual output synchronous step-down DC/DC controller with differential output voltage sensing and clock synchronization. The controlled on-time, valley current-mode architecture enables a very fast transient response by increasing its operating frequency during a transient event, enabling the LTC3838 to recover from a large load step in only a few clock cycles. The operating frequency is selectable from 200kHz to 2MHz or can be synchronized to an external clock. A low 30ns minimum on-time allows for a high step-down ratio power supply at very high operating frequencies.
Dual 4A PowerPath Ideal Diodes Feature Ultralow 15mV Forward Voltage
Linear Technology Corporation introduces the LTC4415, a monolithic two-channel 4A PowerPath ideal diode device designed to reduce heat, voltage drop and board space while preserving battery run time in power switchover circuits. The LTC4415 is ideal for applications requiring an ideal Diode-ORing function for load sharing or automatic switchover between two input power sources. The LTC4415's ultralow 15mV forward voltage is significantly lower than a Schottky diode, thereby extending battery run time and operating voltage range while ensuring no oscillations during supply switchover. Low 50mOhm on-resistance reduces power loss and heat.
Fairchild FAN6756 PWM controller - ultra-low standby power
Fairchild Semiconductor has developed the FAN6756 PWM controller featuring mWSaver™ technology, which enables the reduction of standby power loss in the external circuit without using additional support ICs. The single-chip FAN6756 is a highly integrated green-mode PWM controller, capable of significantly reducing standby losses in SMPS designs, eliminating up to 15 external components. When compared to competitive IC solutions available today, the device achieves greater power savings and can save the designer up to $.30 in bill of material (BOM) costs.
Op Amp Drives SAR ADCs to True Zero on a Single 5V Supply
Linear Technology has introduced the LTC6360, a very low noise, high speed amplifier that can drive to 0V while maintaining high linearity on a single +5V supply. The LTC6360's integrated ultralow noise charge pump provides an internal negative rail, eliminating the need for a negative supply. Compared to typical rail-to-rail output single-supply amplifiers that can only swing to within a few hundred millivolts of ground, the LTC6360 provides improved linearity and dynamic range in applications that benefit from a true zero output swing.
High Efficiency ±6A Switching Regulator for DDR Termination Complies with DDR/DDR2/DDR3 Standards
Linear Technology has introduced the LTC3617, a high efficiency, monolithic synchronous step-down switching regulator, capable of generating a bus termination voltage for DDR/DDR2/DDR3 and future standard memory applications requiring sourcing and sinking of current. An internal resistor divider sets the VTT DDR termination supply and VTTR reference voltages equal to half the voltage applied to the input, with output current capability of ±6A (sinking/sourcing) at VTT and ±10mA at VTTR.
Vishay Siliconix Introduces JAN-Qualified 60 V and 90 V N-Channel Power MOSFETs for Military, Space, and Avionics Applications
Vishay Intertechnology has introduced the first of its new Vishay Siliconix military-grade n-channel power MOSFETs: the JAN-qualified 60 V 2N6660JANTX/JANTXV and 90 V 2N6661JANTX/JANTXV. For military, space, and avionics applications, the devices combine low on-resistance and fast switching speeds in the sealed TO-205AD (TO-39) package.
Texas Instruments introduces highly efficient boost charger IC for nano power energy harvesting
Texas Instruments has introduced its next generation of power management integrated circuits for energy harvesting. The highly efficient boost charger for nano (ultra low) power energy harvesting manages the microwatts to milliwatts of power generated from a number of sources, such as solar, thermoelectric, electromagnetic and vibration, and stores the extracted energy in various storage elements, including Li-ion batteries and super capacitors. The bq25504 also includes circuitry to protect the energy storage element from over voltage and under voltage conditions and to kick-start the system when the battery is deeply discharged.
Vishay Siliconix MICRO FOOT N-Channel and P-Channel Power MOSFETs are Industry's First to Feature On-Resistance Ratings Down to 1.2 V in Industry's Smallest Chipscale Package
Vishay Intertechnology has introduced the industry's first p-channel power MOSFET in the industry's smallest 0.8 mm by 0.8 mm chipscale package, in addition to the first n- and p-channel devices to offer on-resistance ratings down to 1.2 V in this package size. The 8 V n-channel Si8802DB and p-channel Si8805EDB TrenchFET power MOSFETs in the MICRO FOOT package occupy up to 36 % less board space than the next smallest chipscale devices, yet offer comparable — and even lower — on resistance.
NXP Introduces LDO with Best-in-Class Performance in a Small Wafer-Level Chip-Scale Package
NXP Semiconductors N.V. has announced the availability of the LD6806CX4 ultra low-dropout voltage regulator (LDO), featuring ultra-low dropout of only 60 mV at a 200-mA current rating. With an ultra-small 0.76 x 0.76 x 0.47mm wafer-level chip-scale package (WLCSP), the LD6806CX4 uses minimal board space, making it ideal for extremely space-constrained designs in mobile handsets, where battery life is also a critical success factor. Batteries in mobile phones discharge almost linearly over time, but the LDO compensates for this effect by providing a constant regulated output voltage. For example, if the battery voltage of a smartphone goes down to 3.0 V, due to the low dropout voltage the LD6806CX4 is still able to support an SD card application with a mandatory and stable supply voltage of 2.9 V. The LD6806CX4 is part of NXP's new LD6806 family of LDOs, which are available immediately from major distributors.
Intersil's ISL55211 Wideband Differential Amplifier Features Industry's Lowest Distortion
Intersil Corporation has introduced the ISL55211, a low noise, wideband differential amplifier that requires only a single 3.3V power supply and consumes only 35mA quiescent current (155mW). The ISL55211 is an ultra-low distortion, high-speed differential amplifier that can drive high performance ADCs, such as the recently introduced 14-bit ISLA214P50, with minimal degradation to the ADC's baseline performance. It provides three fixed gain settings of 2x, 4x, and 5x, and maintains a constant 1.4GHz bandwidth and low output noise of <10nV/√Hz for all gain settings.
150mA Supercapacitor Charger with PowerPath Control & Auto Cell Balancing in 9mm²
Linear Technology has introduced the LTC3226, an inductorless supercapacitor charger with backup PowerPath controller for Li-ion or other low-voltage system rails in applications that require short term backup power. The device employs a low-noise dual mode (1x/2x) charge-pump architecture with constant input current to charge two supercapacitors in series from a 2.5V to 5.5V input supply to a programmable capacitor charge voltage between 2.5V and 5.3V. Charge current is resistor-programmable up to 150mA. The device's automatic cell balancing and voltage clamping features maintain equal voltages on both cells without requiring balancing resistors. This protects each supercapacitor from overvoltage damage that could otherwise be caused by mismatches in cell capacitance or leakage, while minimizing current drain on the capacitors.
Intersil’s Rad-Hard Dual Precision Op Amp Consumes Low Power, Delivers Low Noise
Intersil Corporation has expanded its family of radiation hardened single supply op amps with the introduction of the ISL70218SRH. This dual precision rail-to-rail output amplifier consumes half the power of competing devices, and provides superior noise performance, input offset and input bias current specifications.
Intersil’s Compact HIP4086A Three-Phase Bridge Driver IC Features Industry’s Fastest Rise and Fall Times
Intersil Corporation today introduced the HIP4086A, a low noise, 80V, 0.5A three-phase bridge driver IC. The HIP4086A features low EMI along with the industry's fastest rise and fall times, which help reduce switching losses and simplify development of flexible bridge-based PWM motor control designs.
Ericsson Extends Vertical-Mount Voltage Regulator Series for Space-Critical Applications
Ericsson has introduced two new vertical-mounting members in its family of 3E digital point-of-load (POL) voltage regulators aimed at space-critical applications. The new 12A BMR462-SIP (BMR4622002) and 20A BMR463-SIP (BMR4632002) complement the recently announced 40A BMR464-SIP (BMR4642002) and offer board designers the ability to select the most appropriate module for their configuration.
Digital Controller Provides Real-Time Adaptive Loop Compensation
Powervation Ltd., announced the PV3012, the company's new dual phase digital DC/DC controller with Auto-Control. Auto-Control is the industry's first and only real-time adaptive loop compensation solution. This patented digital control loop technology optimizes the trade-off between dynamic performance and system stability on a cycle-by-cycle basis without requiring any noise injection or other drawbacks of part-time measurement techniques. This is a key advantage for designs that drive imprecise or variable loads, and addresses the challenges associated with power supply component parameter drift that occurs over temperature and time. This unique approach also relieves power supply designers of the burden of compensation, plant characterization, and reduces total design iterations. Furthermore, Auto-Control readily enables efficiency maximization mode changes such as phase add/drop and light-load modes.
ON Semiconductor Expands Portfolio of Constant Current Regulators for 1.0 watt LED Lighting Applications
ON Semiconductor has expanded its portfolio of Constant Current Regulators (CCRs) to include the NSI50350A. This simple and extremely robust device is designed to provide a thermally efficient and cost-effective alternative to passive/discrete components or driver integrated circuit (IC) solutions for current regulation of Light Emitting Diodes (LEDs). The device is ideal for a variety of 1 watt (W) lighting applications including automotive, architectural lighting and signage.
NXP Delivers Industry’s Lowest Power Ku-Band Downconverters for Satellite TV Receivers
NXP Semiconductors N.V. introduced the TFF101xHN, a family of integrated downconverters for use in Low Noise Block (LNB) 10.7-GHz to 12.75-GHz Ku band satellite receiver systems. Designed for downlink signal reception for TV satellite dishes, NXP's new family of DVB-S compliant downconverters consume 50-percent less current (52 mA) than other integrated solutions, significantly increasing the lifetime of the LNB and improving its reliability. The new downconverters are the most recent additions to NXP's leading portfolio for satellite LNB, including other discrete products such as oscillators, amplifiers and switches, to provide complete coverage for all LNB architectures.
Power Integrations New HiperLCS High-Frequency LLC Converter IC Family Maximizes Power Supply Efficiency, Minimizes Footprint
Power Integrations introduced HiperLCS, a family of high-voltage LLC power supply ICs that incorporate the controller, high- and low-side drivers, and both MOSFETs into a single low-cost package. Highly integrated HiperLCS ICs offer the flexibility to optimize designs either for high efficiency – with a maximum efficiency of better than 97% – or for size, by leveraging high-frequency operation (up to 750 kHz) to minimize transformer size and output capacitor footprint.
Intersil Expands DC/DC Controller Portfolio with Complete Solutions for Embedded and Low Power CPU/GPU Cores
Intersil Corporation has expanded its portfolio of industry leading multi-phase DC/DC controllers by introducing the ISL95835 and ISL95837. Both controllers provide a complete low cost solution for CPU and GPU core power while delivering best-in-class transient response and efficiency. Each complies with Intel's IMVP-7/VR12™ specification for smart voltage regulation to reduce power dissipation in the second-generation lntel Core-i5/i7 processors
Micrel Rolls Out New Family Of Pre-Bias Safe, High Power Density Integrated Synchronous Buck Regulators
Micrel Inc. today launched a new family of pre-bias safe, fully integrated buck regulators targeting the 5V and 3.3V rails. The MIC22705 can supply a maximum output load current of 7A, while the MIC22405 and MIC22205 can handle up to 4A and 2A respectively. These buck regulators achieve more than 95 percent efficiency while switching at high frequencies, utilizing very small external components. Applications such as servers, routers, 4G/LTE base stations, Blu-ray players, computer peripherals and FPGA/ASIC voltage supply can take advantage of this family of buck regulators.
TI’s low-power op amps provide best combination of power and performance for low-voltage, cost-sensitive applications
Texas Instruments Incorporated has expanded its 1.8-V, rail-to-rail input and output, general purpose operational amplifier (op amp) portfolio with the first in a new line of op amps for low-voltage, battery-powered, cost-sensitive industrial, consumer and medical applications. The dual OPA2314 op amp provides the best combination of power and performance, with low quiescent current, low noise and a wide 1.8-V to 5.5V supply range.
ROHM Semiconductor Introduces Its Non-isolated, High-Power 3-Pin DC/DC Converter Modules BP5277 Series
Rohm presents its new high voltage resistance, high efficiency DC/DC Converter module BP5277 family which eliminates the need of external components and thermal design. Configuring a DC/DC converter used to be complicated and time-consuming, starting with the selection of ICs for the loads and covering circuit design as well as the selection of constants e.g. those for phase compensation, board design for obtaining desired characteristics, and thermal design for heat generation. This new 3-pin DC/DC converter module integrates all required components such as the control circuit, switching element, coil as well as I/O capacitors and also allows for high-power operation. Since the series can be deployed like a module, all necessary characteristics can be obtained without involving circuit and board design which significantly reduces the time, costs and energy required for the power supply design.
Octal Voltage, Current & Temperature Monitor Provides Accurate Internal & Remote Measurements
Linear Technology Corporation introduces the LTC2991, an 8-channel I²C temperature, voltage and current monitor for 3V and 5V systems. The LTC2991 is a highly integrated monitoring solution that incorporates a 14-bit ADC, 10ppm/°C voltage reference and I²C digital interface to provide submillivolt voltage resolution and 1% current measurement, as well as ±0.7°C remote accuracy and ±1°C internal accuracy, when making temperature measurements. Eight single-ended voltage inputs can be configured to measure any combination of internal temperature, remote temperature, remote voltage and internal VCC for single or repeated measurements. The LTC2991 provides a highly configurable, yet simple solution for simultaneously monitoring combinations of temperature, voltage and current without compromising accuracy on any parameter.
Dengrove - RECOM's new compact and highly efficient switching regulator operates up to 42v
RECOM's R-78-switching regulator family was originally designed as a pin-compatible replacement for inefficient linear regulators. The new R-78C-family has high efficiency, low output ripple and this with 15 W/m³, i.e. doubled power density.
