Fully Integrated DDR Memory Power Solution

Texas Instruments recently launched a fully integrated power management solution for double date rate DDR2, DDR3, and DDR3L memory subsystems. Intended for use in automotive (e.g., infotainment and driver assistance systems) and industrial (e.g., measurement and automation) applications, the TPS54116-Q1 DC/DC buck converter is a 2.95-to 6-V input, 4-A synchronous step-down converter with a 1-A peak sink/source DDR termination and buffered reference. TPS54116-Q1 Press Photo

Used with WEBENCH online design tools, the TPS54116-Q1 buck converter simplifies power conversion and speeds up the power-supply design process. It provides up to 2.5-MHz switching frequency and minimizes solution size by integrating the MOSFETs and reducing inductor size. The switching frequency can be set above the medium-wave radio band for noise-sensitive applications. Furthermore, it is synchronizable to an external clock.

The converter is packaged in a thermally enhanced 24-pin, 4 mm × 4 mm × 0.75 mm very thin quad flat no-lead (WQFN) package. It costs $2.50 in 1,000-unit quantities.

Source: Texas Instruments

Qi-Certified, 15-W Wireless Power Transmitter

Texas Instruments now offers the industry’s first WPC v1.2 Qi-certified, 15-W wireless power transmitter. Intended to deliver high-power wireless charging to industrial systems (e.g., hand-held medical devices), the bq501210 enables 84% system efficiency with significantly less thermal dissipation.TI bq501210

The bq501210’s features, benefits, and specs:

  • Fixed-frequency operation enables 15-W efficiency and reduces electromagnetic interference (EMI).
  • Fast-charging capability enables the transfer of up to 10 W to compatible receivers, including currently available fast-charging devices.
  • The High-Voltage Dedicated Charging Port (HVDCP) protocol negotiates with capable AC/DC wall adapters to adjust the input voltage.

The bq501210 transmitter is shipping in volume production. It comes in a 9 mm × 9 mm VQFN package and costs $3.75 in 1,000-unit quantities. An evaluation module (bq501210EVM-756) is available for $149.

Source: Texas Instruments

Ultra-Small SWIFT Step-Down Converter

Texas Instruments (TI) recently introduced the industry’s first 12-V, 10-A, 10-MHz series-capacitor buck converter that achieves more than 50 A/cm3 in current density, which is 4× higher than any other 12-V power management component or solution on the market. The TPS54A20 SWIFT synchronous DC/DC converter’s topology enables high-frequency operation at up to 5 MHz per phase without special magnetics or compound semiconductors, which you can use for 8-to-14-V input and 10-A output applications. By using the step-down converter together with TI’s WEBENCH Power Design tool, you can get your space- and height-constrained point-of-load (POL) telecom and networking power-supply designs to market faster.TI TPS54A20

TPS54A20 key features and benefits:

  • Two-phase, series-capacitor DC/DC buck topology that merges a switched-capacitor circuit with a multiphase buck converter
  • Small HotRod quad flat no-lead (QFN) packaging
  • Inexpensive, tiny 2- to 5-MHz inductors enable a 131-mm2 solution size that consumes 50% less area than similar 500-kHz DC/DC converter designs.
  • At under 2 mm tall, the reduced size, weight, and bill of materials (BOM) allows for the placement of tiny 10-A voltage regulators on the back side of a PCB
  • A 14-ns minimum on-time allows for 4-/7-/10-MHz operation without compromising efficiency or EMI performance.

The new DC/DC converter is available in volume.  The TPS54A20 costs $3.25 in 1,000-unit quantities. Order the 4-MHz, 10-ATPS54A20EVM-770 synchronous dual-phase converter evaluation module and download the PSpice transient models.

Source: Texas Instruments

65-V Micro-Power Buck Converters for Automation

Texas Instruments recently introduced two 65-V, 150-mA synchronous DC/DC buck converters for powering factory automation and automotive sensor applications. Featuring 10.5-µA quiescent current (IQ), the converters are intended for applications requiring high efficiency. The LM5165 (industrial-grade) and LM5165-Q1 (automotive-grade) micro-power step-down regulators feature a wide input voltage (VIN) range and dual control modes for optimizing efficiency and PCB area.TI UltraLow Buck

Features and benefits

  • Low 10.5-uA standby IQ (operating with no load) enables 90% conversion efficiency at 1-to-10-mA loads to extend battery life in “always on” applications.
  • 100% duty cycle enables low-dropout operation, while a P-channel high-side MOSFET eliminates the bootstrap diode and capacitor.
  • Dual-mode operation: a pulse frequency modulation (PFM) control mode enables the highest efficiency power supply design, while a constant on-time (COT) control mode provides higher output current and better EMI performance.
  • Fixed 3.3- and 5-V options eliminate external feedback resistor dividers to lower BOM.
  • Programmable current limit optimizes inductor size and cost.

The industrial-grade LM5165 costs $1.35 in 1,000-unit quantities. The automotive-grade LM5165-Q1 costs $1.58.

Source: Texas Instruments

Integrated High-Voltage GaN FET and Driver Solution

Texas Instruments recently announced the availability of 600-V gallium nitride (GaN) 70-mΩ field-effect transistor (FET) power-stage engineering samples. The 12-A LMG3410 power stage coupled with TI’s analog and digital power-conversion controllers enables you to create smaller, higher-performing designs compared to silicon FET-based solutions. These benefits are especially important in isolated high-voltage industrial, telecom, enterprise computing, and renewable energy applications.TI LMG3410

The LMG3410’s features and specifications:

  • Integrated driver and zero reverse-recovery current
  • Integrates built-in intelligence for temperature, current, and undervoltage lockout (UVLO) fault protection
  • Includes GaN FETs
  • Double the power density
  • Reduced packaging parasitic inductance
  • Enables new topologies

To support designers who are taking advantage of GaN technology in their power designs, TI also launched new products to expand its GaN ecosystem. The LMG5200POLEVM-10, a 48-V to 1-V point-of-load (POL) evaluation module, will include the new TPS53632G GaN FET controller, paired with the 80-V LMG5200 GaN FET power stage. The solution allows for efficiency as high as 92% in industrial, telecom, and datacom applications.


TI will offer a development kit that includes a half-bridge daughtercard and four LMG3410 IC samples. A second kit will include a system-level evaluation motherboard. When used together, the two kits enable immediate bench testing and design. The two development kits are available for $299 and $199, respectively.

Source: Texas Instruments

High-Side N-Channel FET Driver

Texas Instruments recently introduced the a single-chip, 100-V, high-side FET driver for high-power lithium-ion battery applications. Offering advanced power protection and control, the bq76200 high-voltage solution drives high-side N-channel charge and discharge FETs in batteries commonly used in energy storage systems and motor-driven applications (e.g., drones, power tools, e-bikes, and more). TexInst bq76200

Compared to 50-V low-side FET driver solutions, the 100-V high-side FET driver provides increased protection against possible inductive transient events in motor-driven applications. It also helps maintain constant battery monitoring and enhanced system diagnostics.

Key features and benefits:

  • Versatile supply voltage range: Compatible with a variety of battery architectures, capacities and voltage ranges from 8 to 75 V, with an absolute maximum of 100 V.
  • Advanced-protection FET control: The fast-switching feature minimizes fault response time and disables the discharge FET if a battery has been severely discharged.
  • Quick development time and reduced overhead: The adaptable driver works with small to large power FET arrays by simply scaling the charge-pump capacitor, reducing engineering overhead and speeding development time.
  • High integration and small package size: The bq76200 integrates a high-voltage charge pump and dual FET drivers into one 5 mm × 4.4 mm × 1 mm thin shrink small outline package (TSSOP).

The bq76200 can be used in conjunction with the bq76940 battery-monitoring family, allowing for the application to move to a high-side FET drive and ensure that communication is always possible. The bq76200 can also drive Texas Instrument’s CSD19531Q5A 100-V NexFET power MOSFET as in the bq76200 evaluation module.

The bq76200 is available now. The driver (six-pin TSSOP) costs $1.69 in 1,000-unit quantities.

Source: Texas Instruments

New High-Performance Stepper Motor Drivers

Texas Instruments launched three new devices for 24-V stepper motors. Two devices offer TI’s AutoTune technology to eliminate stepper motor tuning and two integrate current sensing to support differentiated 3-D printers, robotics, factory automation equipment, and other applications.

AutoTune technology on the DRV8880 and DRV8881 devices eliminates the time-consuming, iterative process of manual tuning. This monitors motor performance over its lifetime and adjusts decay settings. As a result, it’s possible to develop motors that run quietly and efficiently despite changes in motor properties, supply voltage, load, and torque.

For motor systems that do not require AutoTune technology, engineers can use the new DRV8885 bipolar stepper motor driver with integrated current sensing. Designers can speed evaluation and design with the new stepper-motor drivers using the following evaluation modules (EVM), each of which features an onboard MSP430 microcontroller : DRV8880EVM, DRV8881EEVM (for phase/enable interface), DRV8881PEVM (for PWM interface) and DRV8885EVM.

Pricing in 1,000-unit quantities starts at 1.92 for the DRV8880 and US$1.60 for the DRV8881. The DRV8885 (available in a 24-pin HTSSOP package) starts at $1.50 in 1,000-unit quantities. The DRV8884 will be available soon in a 24-pin HTSSOP package for $1 in 1,000-unit quantities.

Next-Gen OPA1612 Audio Operational Amplifier

Texas Instruments recently introduced the OPA1622 audio operational amplifier (op-amp), which is the latest addition to the company’s Burr-Brown Audio line. The OPA1622 delivers high output power of up to 150 mW and extremely low distortion of –135 dB at 10 mW.

TI introduces the industry's highest-performance audio operational amplifier (PRNewsFoto/Texas Instruments)

TI introduces the industry’s highest-performance audio operational amplifier (PRNewsFoto/Texas Instruments)

The compact OPA1622’s low power consumption and low distortion can deliver high-fidelity audio in portable devices such as headphone amplifiers and smartphones. Headphone amplifier designers can take advantage of its low total harmonic distortion (THD) of –135 dB at 10-mW output power into a 32-Ω load. In addition, the OPA1622 delivers maximum output power of up to 150 mW before clipping while maintaining the lowest THD and noise (THD+N), providing a clean signal path for pro audio applications.

The OPA1622 consumes low quiescent current of 2.6-mA per channel and delivers high linear output current of 80 mARMS in a 3-mm × 3-mm DFN package. Additionally, the increased power-supply rejection ratio (PSRR) of –97/–123 dB at 20 kHz enables low distortion from switching power supplies with no LDO, thereby saving board space without compromising audio performance.

The OPA1622’s ground-referenced enable pin is directly controllable from the low-power GPIO pins without level-shifting circuits. Its pinout improves PCB layout and enables exceptional distortion performance at high output power. An enable-circuitry design limits output transients when the OPA1622 is transitioning into or out of shutdown mode, effectively eliminating audible clicks and pops.

A TINA-TI SPICE macromodel is available for the OPA1622 to help verify board-level signal-integrity requirements. The OPA1622 is available in a 3-mm × 3-mm DFN package $2.90 in 1,000-unit quantities.

Source: Texas Instruments

Build a Three-in-One Measurement System

No home electronics lab is complete without a signal generator, logic analyzer, and digital oscilloscope. But why purchase the measurement devices separately, when you can build one system that houses all three? The process is easier than you’d expect.

Hand-soldering a package this size is tough work. The signal-generator filter has bulky coils. In contrast, the MSP430F149’s PQFP64 is tiny.

Photo 1: Hand-soldering a package this size is tough work. The signal-generator filter has bulky coils. In contrast, the Texas Instruments MSP430F149’s PQFP64 is tiny.

Salvador Perdomo writes:

I’ve built an inexpensive and versatile measurement system that contains a signal generator, logical analyzer, and digital oscilloscope. If you build your own, you’ll be able to address many of the problems typically encountered on test benches.

The system is not PC-bus connected. Instead, it’s external to the computer, making use of the RS-232 serial port shown in Figure 1. Also, it doesn’t have a power supply input, so the same serial cable feeds it. Because the computer’s serial connection provides limited power, low power consumption is a fundamental requirement.

It is of interest to have your test benches as clear as possible to search for the faulty part of your design. So, a small measurement system is highly recommended. It’s better if it isn’t connected to the mains.

Figure 1: It is of interest to have your test benches as clear as possible to search for the faulty part of your design. So,a small measurement system is highly recommended. It’s better if it isn’t connected to the mains.

The low-power goal is achieved with a small number of components—the fewer the better. So, I quickly became interested in the Texas Instruments MSP430F149, which is a highly integrated device with low power consumption. Note that everything is integrated except the oscilloscope analog chain (coupling and programmable amplifier), part of the trigger circuit, and the input buffer for the logic analyzer. The microcontroller works with an 8-MHz crystal oscillator.

This application uses the register bank, the entire RAM (2 KB), and nearly all of the peripherals. The peripherals used include the 16-bit TimerA and B, ADC, analog comparator, multiply accumulate, and one USART with modulation capability. Only the second USART is spared.

The system has several main features. You can control and display on the PC by running software implemented on LabWindows/CVI. In addition, it has a signal generator based on the direct digital synthesis method and a frequency of up to 6 kHz with 0.3-Hz resolution. The output voltage reaches a peak of 1.3-V (±2 dB) fixed amplitude. The signal generator works simultaneously with the oscilloscope and logic analyzer (but not these two).

I included a digital oscilloscope with two channels that have 1-MHz bandwidth, 8 bits of resolution, and 401 words of memory per channel. There are 10 amplitude scales from 5 mV to 5 V per division and 18 timescales from 5 μs to 2.5 s per division. Note that there are four working modes: Auto, Normal, Single, and Roll.The logic analyzer has eight channels, 1920 words of memory per channel, and sampling from 1 to 100 kS/s. It is trigger-delay selectable between 0, 50, and 100% of memory length.

Looking at Photo 1, you see that the system’s hardware consists of two separate boards that are attached to each other. Photo 2a shows the tops of the boards, and Photo 2b shows the bottoms.

a—You can replace the relays in the coupling section and the driver circuit with solid-state relays if you can find ones with low leakage current. b—The op-amp’s SMD packages are best viewed from the bottom. The larger board is populated on both sides. Note the importance of the parasitic coupling of the PWM D/A outputs to the input of the amplifiers.

Photo 2: a—You can replace the relays in the coupling section and the driver circuit with solid-state relays if you can find ones with low leakage current. b—The op-amp’s SMD packages are best viewed from the bottom. The larger board is populated on both sides. Note the importance of the parasitic coupling of the PWM D/A outputs to the input of the amplifiers.

The larger board contains the oscilloscope analog chain: BNC connectors, relays (and circuit controller) for DC-GND-AC in the coupling section, and the digital programmable attenuator/amplifier. The top board contains the DC/DC converter power supply, charge-pump inverter, serial communication driver, low-pass filter, trigger (real and equivalent time sampling) circuit, channel-trigger selector, and the microcontroller.

Download the entire article.

Fast 600-V Gate Driver Reduces System-Solution Size for MOSFETs and IGBTs

Texas Instruments recently introduced the UCC27714 half-bridge gate driver for discrete power MOSFETs and IGBTs that operate up to 600 V. With 4-A source and 4-A sink current capability, the UCC27714 reduces component footprint by 50%. In addition, it provides 90-ns propagation delay, 40% lower than existing silicon solutions, tight control of the propagation delay with a maximum of 125 ns across –40°C to 125°C and tight channel-to-channel delay matching of 20 ns across –40°C to 125°C.  The device eliminates the need for bulky gate drive transformers, saving significant board space in high-frequency switch-mode power electronics.TI-gatedriver

Key features and benefits include:

  • Smaller footprint creates highest power-density solutions
  • Advanced noise toleration
  • MOSFETs have the ability to drive over a wide power range
  • Operates across wide temperatures

The UCC27714 is now available. The high-speed 600-V, high-side low-side gate driver costs $1.75 in 1,000-unit quantities.

Source: Texas Instruments

USB Type-C with Texas Instruments TUSB320 CC Logic and Port Controllers from Mouser

Mouser Electronics is now stocking the Texas Instruments TUSB320 family of USB Type-C configuration channel logic and port controllers from Texas Instruments (TI). The TUSB320 family of devices provide USB Type-C configuration channel (CC) logic and port control, making it possible for a system to detect the orientation of the plug, and determine the appropriate USB specification and mode settings for the end equipment.Mouser TUSB320

The TI TUSB320 devices, available from Mouser Electronics, can be configured as a downstream-facing port (DFP), upstream-facing port (UFP), or a dual-role port (DRP). The family of products supports USB 2.0 and USB 3.1, giving designers the flexibility to use these devices in multiple USB-enabled designs. The TUSB320 family also contains several features (such as mode configuration and low standby current), which make this device applicable for source or sinks in USB 2.0 applications. The device operates over a wide supply range (2.7Vbus – 5.5Vbus) and offers low power consumption; its low shutdown power of 8 mW benefits a variety of battery-powered applications.
The TUSB320 family of devices offers I2C or GPIO control, an industrial temperature range of -40 to +85 degrees Celsius, and support for up to 3A advertisement and detection. The devices can be used for host, device, and dual-role port applications in mobile phones, tablets, and USB peripherals.

The TUSB320EVM, also available from Mouser Electronics, provides an evaluation platform for the TUSB320 device. This plug-and-play module is configurable via onboard DIP switches for DFP, UFP, or DRP implementations, operating in I2C or GPIO mode.

Source: Mouser

High-Resolution Resistive Sensing Signal Conditioner

Texas Instruments recently introduced the PGA900 high-resolution resistive sensing signal conditioner. The PGA900 enables the fast and precise 24-bit measurement of conditions such as pressure, flow, strain, or liquid levels. Its programmable core enables flexible linearization and temperature compensation for numerous resistive bridge sensing applications.TI PGA900

Key features and benefits include:

  • Fast, precise sensor signal and temperature compensation: Integrates two 24-bit ADCs to provide high-resolution signal acquisition. Low-drift voltage reference of 10 ppm/°C, maximum, enables high accuracy across the –40°C to 150°C operating temperature range.
  • Integrated 14-bit DAC: Enables highly linear analog outputs.
  • User-programmable temperature and nonlinearity compensation algorithms: Integrated ARM Cortex-M0 core allows developers to use proprietary temperature and nonlinearity compensation algorithms to differentiate their end products.
  • Simple calibration: One-wire interface allows communication, configuration and calibration through the power supply pin without using additional lines.
  • Wide input voltage allows direct connection to the power supply: Integrated power management circuitry accepts input voltages ranging from 3.3 to 30 V to simplify the design and provide reliability.

With the PGA900 evaluation module (EVM), you can to quickly and easily evaluate the device’s performance and integrated features. The PGA900EVM is available for $249. You can download PGA900 example software and the user’s guide, as well as the PSpice and TINA-TI Spice and TINA-TI models, at www.ti.com.

The PGA900 resistive sensing conditioner comes in a 6 mm × 6 mm very thin quad flat no-lead (VQFN) package. It costs $4.50 in 1,000-unit quantities.

Source: Texas Instruments

SimpleLink Simplifies IoT Prototyping

Texas Instruments recently introduced the next-generation SimpleLink SensorTag development kit, which enables the fast integration of sensor data with wireless cloud connectivity.TI Simplelink

Features of the new SensorTags include:

  • Flexible development with wireless connectivity options including Bluetooth low energy, 6LoWPAN and ZigBee based on the SimpleLink ultra-low power CC2650 wireless microcontroller
  • 10 integrated low-power sensors
  • New DevPack plug-in modules that extend the kits’ functionality and programmability
  • Out of the box capabilities with a free iOS or Android app
  • Connect to the cloud in minutes via TI’s IoT cloud ecosystem including IBM’s Bluemix IoT Foundation
  • Available TI Design reference designs, including 3-D print files of the SensorTag enclosures, that enable you to reuse the SensorTags for new designs

The SensorTag kits come with ready-to-use protocol stacks, a free Code Composer Studio IDE license, online training, and 24/7 online TI E2E community support. In addition, TI’s cloud-based software development tools provide instant access to examples, documentation, software and even an integrated development environment (IDE) all from the convenience of the web.

Expanding the standards supported by the SensorTag, there will be two different development kit versions:

  • The multi-standard SensorTag, based on the SimpleLink ultra-low power CC2650 wireless MCU, supports development for Bluetooth Smart, 6LoWPAN and ZigBee. This SensorTag has a unique feature that enables developers to change between different 2.4-GHz technologies by simply loading new software images directly from the SensorTag app over-the-air. When the SensorTag is used as a ZigBee and 6LoWPAN device, it connects to the cloud via a BeagleBone Black gateway. For Bluetooth Smart development, it connects via a smartphone.
  • The Wi-Fi SensorTag will allow users to demo the SimpleLink CC3200 wireless MCU. Further details and availability information will be coming soon. Start developing today with the CC3200 solution with these development tools.
  • Both SensorTags come with 10 integrated low-power sensors including the TI OPT3001 precision ambient light sensor, TI HDC1000 integrated humidity and temperature sensor and TI TMP007 contactless IR thermopile sensor. Additional sensors include a nine-axis motion sensor (gyroscope, compass and accelerometer), altimeter/ pressure sensor, digital microphone, and magnet sensor.

New to the next-generation CC2650 SensorTag is the ability for developers to customize their kit to fit their design with new DevPack plug-in modules. DevPacks available today include:

  • The $15 Debug DevPack is based on the TM4C1294 microcontroller (MCU) to add debug capabilities to the SensorTag. Plug it into the DevPack expansion header and debug the SensorTag with Code Composer Studio IDE, TI Cloud Tools, or IAR embedded workbench for ARM.
  • The Display (watch) DevPack adds a 1.35 inch ultra-low power graphical display to the SensorTag. The Watch DevPack is designed for development of smartwatches, refrigerator displays and any other application that has a need for a remote display.
  • The LED Audio DevPack consists of four high power multi-color LEDs and a 4W audio amplifier powered by a micro-USB for home automation and smart lighting applications.
  • Create your own! If developers cannot find a specific DevPack to fit their needs, they can create their own by downloading the Build Your Own DevPack guide.

The new SimpleLink multi-standard CC2650 SensorTag (CC2650STK) is available now for $29 in the TI Store and authorized distributors. Related software for each connectivity standard is also available:

  • Bluetooth Smart software
  • 6LoWPAN software
  • ZigBee software

The SimpleLink SensorTag DevPacks are also available on the TI Store and through TI authorized distributors. The Debug DevPack (CC-DEVPACK-DEBUG) costs $15. The Display DevPack (DEVPACK-WATCH) costs $19. The LED Audio DevPack (DEVPACK-LED-AUDIO) is $19. Pricing and availability for the SimpleLink Wi-Fi CC3200 SensorTag will be coming later in 2015.

Innovative Magnetic Sensing Integrated IC

Texas Instruments recently unveiled the DRV421 magnetic sensing IC with a fully integrated fluxgate sensor and compensation coil driver. It includes all the required signal conditioning circuitry.DRV421_TI

Compared to traditional Hall effect sensors, the DRV421 provides high sensor accuracy and linearity, high dynamic range, and simpler system design. With it, you can easily design magnetic closed-loop current sensors for a variety of applications (e.g., motor control, renewable energy, battery chargers and power monitoring).

The $49 DRV421 evaluation module (DRV421EVM) makes it easy to evaluate the new current sensing IC’s features and performance. The DRV421 comes in a 4 mm- × 4 mm QFN package. Pre-production samples are available now. Production quantities will be available in Q3 2015 for 2.50 in 1,000-unit quantities.

Source: Texas Instruments

Fast 16-bit ADC, Four-Channel 14-bit ADC, & Digital Variable Gain Amp

Texas Instruments launched the ADS54J60, which is the industry’s first 16-bit 1-GSPS ADC and the first to achieve over 70 dBFS signal-to-noise ratio (SNR) at 1-GSPS. Texas instruments also announced the highest-density, four-channel, 14-bit 500-MSPS ADC, the ADS54J54. To optimize the signal chain, TI’s new 4.5-GHz LMH6401 fully differential digital variable gain amplifier (DVGA) offers the widest bandwidth with DC coupling and allows signal acquisition of low and high frequencies without the limitation of baluns used in AC-coupled systems. These ADCs work together with the amplifier to provide the highest performance, lowest power and space savings in defense and aerospace, test and measurement, and communication infrastructure applications.Texas Instruments

All ICs are now sampling. The ADS54J54 costs $500 in 1,000-unit quantities. The ADS54J60 will be available in Q4 2015 for $705 in 1,000-unit quantities. The LMH6401 costs $10.95 in 1,000-unit quantities.

Source: Texas Instruments