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August 2012 |
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In this issue |
Featured Video |
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150W Stereo/300W Mono PurePath™ HD Digital-Input Power Stage
The single-chip TAS5624A employs PurePath™ HD, a closed-loop technology that enables traditional AB-Amplifier performance levels while providing the power efficiency of traditional class D amplifiers. This eliminates the need for large, expensive transformers and heatsinks and also gives the performance levels of smaller, class D amplifiers and switch mode power supplies. PurePath™ HD closed loop architecture offers excellent power supply rejection to ease design and lower cost.
Resources:
Datasheet,
evaluation module,
block diagram,
IBIS model
- Up to 93 percent efficient Class-D operation
- Class-G compliant for reduced power losses
- Applications: DVD player and home theater, high-power sound bars, powered subwoofer and active speakers, mini combo systems
TAS5624A: Price (1ku): $4.45
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1.8A Low Voltage Brushed DC Motor Driver
TI's new low voltage DRV8837 is the world's smallest 1.8A brushed DC motor driver. The DRV8837 comes in a tiny, 2 x 2mm 8-pin WSON package, a 75 percent reduction in size versus the next nearest competitor. At 280mΩ, the RDSON is half that of competition, supporting 1.8A continuous output current with excellent thermal performance. Low RDSON coupled with an ultra-low 30nA sleep current extends battery life in portable/battery-powered applications by as much as 25 percent.
Resources:
Datasheet,
evaluation module,
application software,
block diagram,
video
- Single H-bridge motor driver improves thermal performance and extends battery life.
- PWM control allows independent control of each half bridge
- Applications: Battery-powered applications such as toys, e-locks, smart gas and water meters, cameras, and other low voltage applications
DRV8837: Price (1ku): $0.45
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16-Channel Constant Current LED Driver with Pre-Charge FET
The TLC59283 is a 16-channel, constant-current sink light-emitting diode (LED) driver. Each channel can be individually controlled with a simple serial communications protocol that is compatible with 3.3-V or 5-V CMOS logic levels, depending on the operating VCC. The TLC59283 uses a novel pre-charge FET architecture that does not require an additional external bias supply, thereby reducing the number of external components required to eliminate ghosting in time multiplexed LED display applications.
Resources:
Datasheet,
block diagram,
IBIS model
- Pre-charge FET eliminates ghosting issues and reduces external component count
- 50 nS BLANK pulse width for OUTn on/off control supports fast refresh rates
- Applications: Video displays, LED message boards, general purpose LED indicator lamps
TLC59283: Price (1ku): $0.55
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1s to 16s Impedance Track Fuel Gauge
The bq34z100 is a fuel gauge solution that works independently of battery series-cell configurations, and supports a wide range of Li-Ion and LiFePO4 battery chemistries. Batteries from 3 V to 65 V can be supported through an external voltage translation circuit that can be controlled automatically to reduce system power consumption. The bq34z100 provides several interface options, including an I2C slave, an HDQ slave, one or four direct LEDs, and an Alert output pin. Additionally, the bq34z100 provides support for an external port expander for more than four LEDs.
Resources:
Datasheet,
evaluation module
- Patented Impedance Track™ battery fuel gauging technology enables lower terminate voltage of system and extends run time from the battery
- Extremely flexible battery gas gauge allows accurate gauging of popular chemistries
- Applications: Power door, power drill, medical consumer devices, UPS backup, remote powered systems
BQ34Z100: Price (1ku): $2.10
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Highly-Integrated Digital Controller for Isolated Power with 3 Feedback Loops and 8 DPWM Outputs
The UCD3138 is a fully programmable, power-optimized digital controller solution offering the benefit of simplicity in design, while maintaining ample ability to develop high-performance and well-differentiated power supply solutions. The device is architected to include a configurable digital state machine, optimized to meet the performance requirements of server & telecom isolated power applications, along with a general purpose microcontroller.
Resources:
Datasheet,
UCD3138 Digital Resonant LLC Converter Evaluation Module,
USB Interface Adapter EVM,
UCD3138 Digital Power Factor Correction Pre-regulator Evaluation Module
- Up to eight high resolution DPWM outputs allows for accurate loop regulation that closely mimics analog control loops
- Applications: Servers and telecom rectifiers, telecom and industrial power modules, merchant power ODM and OEM customers, power-factor correction
UCD3138: Price (1ku): $4.10
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Generation 2, Qi Compliant 5V Wireless Power Transmitter
The bq500211 is a digital wireless power controller that integrates all functions required to control wireless power transfer to a single WPC compliant receiver. Designed for 5-V systems, the bq500211 maximizes flexibility in wireless power applications. Dynamic power limiting (DPL) enhances the user experience by seamlessly optimizing the usage of power available from limited input supplies. With comprehensive status and fault monitoring, should any abnormal condition develop during power transfer, the bq500211 handles it and provides indicator outputs.
Resources:
Datasheet,
evaluation module,
block diagram
- Single-bay wireless power transmitter provides a comprehensive and flexible design solution, easing system design and complexity
- No device programming needed eases system design
- Applications: Transmitter Pad for Contactless Charge, Cell Phone, Digital Cameras, Portable Media Players, Remotes and Gaming Controllers, Bluetooth Headsets
bq500211: Price (1ku): $3.95
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3 Pin 1.5A Fixed 12V Positive Voltage Regulator
The UA7812 is a fixed-voltage IC voltage regulator designed for a wide range of applications including on-card regulation for elimination of noise and distribution problems associated with single-point regulation. Each of these regulators can deliver up to 1.5 A of output current. The internal current limiting and thermal-shutdown features of these regulators essentially make them immune to overload. In addition, these devices can be used with external components to obtain adjustable output voltages and currents.
Resources:
Datasheet
- Internal thermal-overload protection protects the device from overheating during load fault
- Output transistor safe-area compensation protects against over power or over current
- Applications: AC/DC non-isolated power supply, local regulations, set-top boxes
UA7812: Price (1ku): $0.31
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Dual, 5A, High-Speed Low-Side Power MOSFET DriverFixed Linear Regulator
The UCC2752x are a family of dual-channel, high-speed, low-side gate driver devices capable of effectively driving MOSFET and IGBT power switches. Using a design that inherently minimizes shoot-through current, UCC2752x is capable of delivering high-peak current pulses of up to 5-A source and 5-A sink into capacitive loads along with rail-to-rail drive capability and extremely small propagation delay typically 13 ns. In addition, the drivers feature matched internal propagation delays between the two channels that are very well-suited for applications requiring dual-gate drives with critical timing, such as synchronous rectifiers.
Resources:
Datasheet,
PSpice transient model,
TINA-TI transient reference design,
TINA-TI transient spice model
- 5A peak current capability allows fast switching and low rise/fall times
- Best-in-class propagation delay allows accurate timing and loop control
- Applications: Switch-mode power supplies, DC/DC converters, motor control and renewable energy applications, gate drive for emerging wide-band gap
UCC27524: Price (1ku): $0.90
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1-Bit Unidirectional Voltage-Level Translator
The SN74AUP1T34 is a one-bit non-inverting translator that uses two separate configurable power-supply rails. The A port is designed to track VCCA. VCCA accepts supply voltages from 0.9 V to 3.6 V. The B port is designed to track VCCB. VCCB accepts supply voltages from 0.9 V to 3.6 V. This allows for low-voltage bidirectional translation between 1-V, 1.2-V, 1.5-V, 1.8-V, 2.5-V, and 3.3-V voltage nodes.
Resources:
Datasheet,
IBIS Model
- Fully symmetric power-supply rails supports 1-V node with no need for power-up and power-down sequence
- Output enable allows user to disable outputs to reduce power consumption
- Input hysteresis allows slow input transition and better noise immunity at input
SN74AUP1T34: Price (1ku): $0.24
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Ultra-Low rON, 6A Dual Load Switch with Controlled Turn On
The TPS22966 is a small, ultra-low RON, dual-channel load switch with controlled turn on. The device contains two N-channel MOSFETs that can operate over an input voltage range of 0.8V to 5.5V and can support a maximum continuous current of 6A per channel. Each switch is independently controlled by an on/off input, which is capable of interfacing directly with low-voltage control signals. In TPS22966, a 220-Ω on-chip load resistor is added for quick output discharge when switch is turned off.
Resources:
Datasheet,
evaluation module
- 6-A maximum continuous switch current provides high current capability for various loading conditions
- Integrated output discharge resistance gives no floating output
- Applications: Ultrabook, notebooks/netbooks, set-top boxes, residential gateways, telecom systems, solid state drives
TPS22966: Price (1ku): $0.44
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New Additions to the TI WEBENCH® Power Designer:
Switchers and LDOs:
TLV70718P,
TLV707285,
TLV70730P,
TLV70733P,
TPS53353,
TPS53355,
TPS54010,
TPS54110,
TPS54519,
TPS54521,
TPS54719,
TPS54910,
TPS54917,
TPS62151,
TPS62152,
TPS62153,
TPS73101,
TPS731125,
TPS73115,
TPS73118,
TPS73125,
TPS73130,
TPS73131,
TPS73132,
TPS73133,
TPS73150,
TPS73201,
TPS73213,
TPS73215,
TPS73216,
TPS73218,
TPS73219,
TPS73225,
TPS73230,
TPS73233,
TPS73250,
TPS73601,
TPS736125,
TPS73615,
TPS73616,
TPS73618,
TPS73619,
TPS73625,
TPS73630,
TPS73632,
TPS73633,
TPS73643
New Additions to the TI WEBENCH® Power Architect:
XC7Z010,
XC7Z020,
XC7Z030,
XC7Z045
New Additions to the TI WEBENCH® Sensor AFE:
ADS1146,
ADS1147,
ADS1148,
ADS1246,
ADS1247,
ADS1248
Try them from the WEBENCH® start panel on www.TI.com.
Model Update Partial list of models released in July 2012:
SPICE Macro:
INA223,
LM2678,
LM3886,
LM48556,
LM5117,
LMH7322,
LMH7324,
OPA694,
THS4215,
TL3016,
TLV117112,
TLV117118,
TLV3011,
TLV70235,
TPA3111D1,
TPS22920,
TPS2811,
TPS2811-Q1,
TPS2835,
TPS40090,
TPS40322,
TPS542941,
TPS542951,
TPS54318,
TPS54495,
TPS54821,
TPS61254,
TPS61256,
TPS62175,
TPS79613,
TPS79618,
TPS79625,
TPS79628,
TPS79630,
TPS79633,
TPS79650,
TPS799195,
TPS7A3001,
TPS7A4501,
TPS7A4901,
UC1715,
UC2715,
UC3715,
UCC27423,
UCC27423-EP,
UCC27423-Q1,
UCC27424,
UCC27424-EP,
UCC27424-Q1,
UCC27425,
UCC27425-Q1,
UCC27512,
UCC27517
Get more models: Devices supported by SPICE models
IBIS:
DRV110,
DRV120,
DS90UH925Q,
DS90UH926Q,
DS90UR903Q,
DS90UR904Q,
DS90UR916Q,
ISO1540,
ISO1541,
LMK03806,
LMK04816,
LMK04906,
SN65HVD257,
SN74LVC138A,
SN74LVC2G07,
TAS5721,
TPL0102-100,
TPS51518,
TXS02612,
TPS51219
Get more models: Devices supported by IBIS models
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Check out The Signal, TI's analog signal processing circuits and solutions blog focused on technical topics, such as:
• Goop–a sticky topic
• Swinging Close to Ground–single supply operation
• "I Need High Input Impedance!"
• Clairvoyant Troubleshooting
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NEW LITERATURE AND VIDEOS |
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Application Notes: |
Using a Fixed Threshold in Ultrasonic Distance-Ranging Automotive Applications |
Applying Acceleration and Deceleration Profiles to Bipolar Stepper Motors |
High-Definition Haptics: Feel the Difference! |
Importing a SPICE Netlist into TINA7-TI |
Selecting Among DRV88xx devices to Drive Brushed or Stepper Motors |
TUSB8040A Design Guide |
Data-Rate Independent Half-Duplex Repeater Design for RS-485 |
How to Measure the Control Loop of DCS-Control Devices |
TMS3705 Range Extender Power Solution Using UCC27424-Q1 |
Selection Guides: |
Analog Switch Guide |
Point-of-Load (POL) Power Solutions for Industrial Designs |
Videos: |
Introduction to the DRV8837 Motor Driver |
Engineer It – How to Select an Op Amp to Drive Your SAR ADC |
CDCM6208 Video Series Part 4 |
AFE4300 Weigh Scale and Body Composition Analog Front End |
DPDT USB 2.0 High-Speed and MHL Switch |
Digital Power Supply Loop Measurement: Part I Plant |
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Technology Days 2012: Technology Days are full-day technical presentations on new products, TI solutions in key applications, and technology innovations. Topics vary by location and may include signal chain, wireless connectivity, embedded processors and microcontrollers, medical applications, and battery management and power.
• September 25: Boston, MA |
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• October 30: Detroit, MI |
• October 3: Vancouver, Canada |
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• November 6: Orlando, FL |
• October 16: Milwaukee, WI |
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Power Supply Design Seminar: The 2012-13 TI Power Supply Seminar series, the 22nd since they were introduced by Unitrode in 1977, provides rich technical and practical presentations that combine new advanced power supply concepts, basic design principles and "real-world" application examples. Whether this seminar is used to gain fresh knowledge of power supply design, or as a review for those experienced in power supply design, the topics presented will be worthwhile for all levels of expertise.
Locations and Dates » Register today
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COMPANY-AUTHORED ARTICLES IN THE MEDIA |
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“Power supply challenges in data and voice communications systems,” by Greg Waterfall, Masashi Nogawa, and Dheepan Sundaram, ECN. April 2012. |
“Benefits of a coupled-inductor SEPIC converter,” by John Betten, Power Management DesignLine.com. April 2012. |
“Which USB is right for your applications - part 3,” by Dan Harmon, Planet Analog. April 2012. |
“Gain consideration with the use of a TL431 and optocoupler feedback,” by John Bottrill, Control Engineering. April 2012. |
“Automated stage lighting needs isolated data transmission,” by Thomas Kugelstadt, Electronic Design. April 2012. |
“POWER TIP #46: Time your synchronous buck FETs properly,” by Robert Kollman, Power Management DesignLine.com. April . |
“How a poorly designed 20W amplifier can destroy your speaker system,” by Dafydd Roche, Planet Analog. April 2012. |
“Benefits of a coupled-inductor SEPIC converter,” by John Betten, EETimes Europe. April 2012. |
“Soundbar design from start to finish: Clocks, clocks, clocks (Part 4),” by Dafydd Roche, Electronic Design. April 2012. |
“3D packaging developments for advanced power management needs,” by Matt Romig, Low-Power Design. |
“Improving audio converters performance,” by Tahar Allag, Wireless Design & Development. April 2012. |
“Haptics 101,” by Eric Siegel, EDN. April 2012. |
“Harmonic distortion: Part II: Understanding the affects of closed-loop gain and common-mode errors on THD+N,” by Jorge Vega, En-Genius.net. April 2012. |
“Optimizing solid state drive power architecture,” by Chris Glaser, Power Electronics Technology. April 2012. |
“PCB and ESR subtleties in switching regulator and LDO designs,” by Kern Wong, EDN. April 2012. |
“How to correct voltage imbalance in half-bridge converters under current-mode control,” by John Bottrill, How2Power. April 2012. |
“Reducing MLCCs' piezoelectric effects and audible noise,” by Nicolas Guibourg, EETimes Europe. April 2012. |
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CUSTOMER SUPPORT CONTACT INFORMATION |
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Visit TI's E2E™ Community and interact with your peer engineers, TI engineers, and other experts in order to ask questions, share knowledge, explore ideas, and help solve problems. |
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