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January 2010 |
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| In this issue |
Featured Video |
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2.2-V to 5.5-V, Low-Power, 12-Bit, 100-kSPS, 8-Channel DAC with PGA and SPI: The ADS8201 is a low-power, complete on-chip data acquisition system optimized for portable applications that require direct connections, wide dynamic range, and automatic operation with very low power consumption. The device includes a 12-bit, capacitor-based, SAR ADC; a high-performance, continuous-time PGA; and a fully automatic scan, 8-to-1 mux with breakout to allow for system design flexibility.
Resources: Data sheet, block diagram
- Small size saves considerable board space and single-chip solution reduces system chip count
- Applications: Sensor-based apps and GPS chipsets
ADS8201 Price (1ku): $2.75 – $3.05 |
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Octal, Low-Power 16-Bit, ±15-V Output Parallel Input DAC: Designed with a string architecture to keep power dissipation and costs low, the DAC87x8 family offers a 3x increase in speed while maintaining an INL accuracy of ±4 LSB maximum. It also provides the widest voltage range of ±16V and supports temperatures up to 105°C.
Resources: Data sheet, block diagram
- Internal 4x or 6x programmable gain eliminates need for external amp to gain up the output voltage
- User-calibration feature to balance system offset of signal chain
- Applications: Automatic test equipment, PLC and industrial process control, communications
DAC8728 Price (1ku): $11.95 – $23.05 |
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Low-Power Audio DAC with Audio Processing and Mono Class-D Speaker Amp: The TLV320DAC3120 highly integrated, high-performance DAC with 24-bit mono playback integrates a microphone bias, headphone drivers, and a mono speaker driver capable of driving a 4-Ω load. A fully programmable miniDSP handles digital audio processing, with the digital audio data format programmable to work with popular audio standard protocols (I²S, left/right-justified) in master, slave, DSP, and TDM modes.
Resources: Data sheet, EVM
- Low power consumption: 9.5mW mono 48-ksps playback
- Supports 8-kHz to 192-kHz sample rates
- Applications: Portable audio devices, eBook readers, portable navigation devices
TLV320DAC3120 Price (1ku) $1.75 – $ 1.95 |
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Power MOSFETs with 50% More Current in a Standard Footprint: The DualCool™ NexFET™ family of power MOSFETs deliver an industry standard footprint while enabling thermally efficient cooling through the top and bottom of the package, resulting in 80% higher power dissipation and 50% more current. This package allows power system designers to effectively direct heat away from the PCB in high-current DC/DC applications, resulting in improved power density, higher current capability and improved system reliability.
Resources: Data sheets, samples, video
- Optimized for 2-sided cooling and 5-V gate drive
- Applications: Point-of-load synchronous buck in networking, telecom, and computing systems; optimized for synchronous FET apps
CSD16325Q5C Price (1ku): $1.47 |
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PowerLAN™ Dual-Cell Li-Ion Battery Monitor with PowerPump Cell Balancing: The bq76PL102 PowerLAN dual-cell battery monitor is part of a complete scalable battery management system for use with arrays of up to 12 Li-Ion rechargeable cells. The bq76PL102 connects to one or two cells in a series string, performs voltage and temperature monitoring of each individual cell, and reports these parameters over the PowerLAN communication network.
Resources: Data sheet, block diagram
- Together with a bq78PL114 master-gateway battery controller, the bq76PL102 forms a complete battery monitoring and management system for higher cell-count applications
- Applications: Uninterruptible power supplies, portable medical and test equipment, electric bikes and Mild-EV battery packs, multicell series strings ≥ 5S
bq76PL102 Price (1ku): $0.90 – $0.99 |
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2.25-MHz Step-Down Converter with Dual LDOs and SVS: The TPS65001 is a single-chip power management IC for portable applications. The step-down converter enters a low-power mode at light load for maximum efficiency across the widest possible range of load currents.
Resources: Data sheet, block diagram, EVM
- For low-noise applications, device can be forced into fixed frequency PWM via a pin
- Applications: Point of load, embedded processor power, cell phones, smartphones
TPS65001 Price (1ku): $1.70 – $1.90 |
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3-V to 20-V Wide Input Synchronous Buck Controller for High Power Density, High Efficiency: The TPS40303’s strong gate drivers allow 25-A capability, and switching frequency up to 1.2MHz facilitates a high power density solution. The device is fully programmable and highly accurate over current protection, allowing optimization of the power stage components for a reliable power supply.
Resources: Data sheet, block diagram, SwitcherPro™ software (free)
- Operates from a single supply covering 3.3-V, 5-V and 12-V power rails
- Thermally enhanced, 10-pin SON package
- Applications: POL modules, printers, TVs, telecom
TPS40303 Price (1ku): $1.40 – $1.55 |
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SMBus-Controlled Battery Charger with Integrated FETs: The bq24765 is a high-efficiency, synchronous battery charger with two integrated 30-mΩ NMOS power MOSFETs and an integrated input current comparator, offering low component count for space-constrained, multi-chemistry battery charging applications. Input current, charge current, and charge voltage DACs allow for very high regulation accuracies.
Resources: Data sheet, application note
- Simplified SMBus control
- Dynamic power management
- Applications: Space-constrained, multi-chemistry battery charging applications
bq24765 Price (1ku): $3.95 – $4.35 |
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4.5-V to 18-V Input, 1.5/2.5-A, 300-kHz Dual Synchronous Step Down SWIFT™ Converter: The TPS54290 is a dual-output, fully synchronous buck converter that operates from a 4.5-V to 18-V input supply voltage, supporting output voltages as low as 0.8V and as high as 90% of the input voltage. Both high-side and low-side MOSFETs are integrated to provide fully synchronous conversion with higher efficiency.
Resources: Data sheet, EVM, PSpice model
- Integrated 170mΩ/120mΩ and 120mΩ/90mΩ N-channel FETs
- Synchronous rectification
- Applications: Set-top box, TV, DSP, consumer electronics
TPS54290 Price (1ku): $3.25 – $2.95 |
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Single-Output LDO, 150-mA, Fixed (5.0V), High PSRR, Low Quiescent Current, Low Noise: The TPS717xx offers very high power supply rejection (70dB to 100kHz PSRR) while maintaining very low 40-µA ground current. An advanced BiCMOS process and a PMOSFET pass device enable fast start-up, very low noise and excellent transient response.
Resources: Data sheet
- Factory EEPROM programmable VOUT
- Ultra-High PSRR 70dB to 100kHz
- Applications: Mobile phone handsets, wireless LAN, Bluetooth®, PDAs, smartphones
TPS71750 Price (1ku): $0.40 – $0.44 |
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Low-Input Voltage, Ultra-Low On-Resistance Load Switch with Configurable Enable Logic: The TPS22932B is an easy-to-use load switch solution, with integrated configurable logic, optimized for low-voltage operation. Compared to a discrete implementation with some external logic and a pass MOSFET, the TPS22932B solution is approximately 10 times smaller, making it ideal for portable applications.
Resources: Data sheet, EVM, video
- 1.2mm x 0.8mm x 0.5mm WCSP packaging
- 1.1-V to 3.6-V operating voltage
- Applications: PDAs, cell phones
TPS22932B Price (1ku): $0.55 – $0.70 |
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Ultra-Small (1.26mm²), Low-Input Voltage, Ultra-Low rON Load Switch
Resources: Data sheet
TPS22924C Price (1ku): $0.55 – $0.70 |
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8-Bit Flip-Flop Driver for LED and Solenoid with Schmitt-Trigger Buffers for 5-V Vcc Operation
Resources: Data sheet, block diagram
TLC59210 Price (1ku): $0.75 – $0.60 |
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Digital Control-Compatible Synchronous Buck Gate Driver with Current Sense and Fault Protection
Resources: Data sheet
UCD7231 Price (1ku): $0.60 |
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P-Channel NexFET™ Power MOSFET for Lower Current Rails (<5A) in a SON 2x2 Package
Resources: Data sheet, video
CSD25302Q2 Price (1ku): $0.36 |
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Precision Adjustable Current-Limited Power-Distribution Switches for High-Current, Low-Voltage Rail in 3x3mm Package
Resources: Data sheet, block diagram, EVM
TPS2556 Price (1ku): $0.90 |
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Dual, P-Channel NexFET™ Power MOSFET in SON 2x2 Package
Resources: Data sheet
CSD75204W15 Price (1ku): $0.55 |
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Dual/Single Phase, D-CAP+™ Mode Step-Down Controller for IMVP6.5 CPU/GPU Vcore
Resources: Data sheet
TPS51621 Price (1ku): $2.00 – $2.20 |
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2-Channel Power Management IC with Battery Charger, Step-Down Converter and LDO
Resources: Data sheet, EVM, EVM software
TPS65720 Price (1ku): $1.65 – $1.85 |
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6-Channel EMI Filter for Display Interface: The TPD6F002 is a six-channel EMI filter in a space-saving DSV package. This low-pass filter array reduces EMI emissions and provides system-level ESD protection at the data ports.
Resources: Data sheet
- 32-dB attenuation at 1GHz; 57-dB crosstalk attenuation at 100MHz
- Applications: Small package and easy-to-use pin assignments make this IC suitable for mobile handsets, PDAs, video consoles, and notebook computers; ideal for EMI filtering and protecting data lines from ESD at the LCD display, keypad, and memory interfaces
TPD6F002 Price (1ku): $0.21 |
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3.3-V ECL Differential Receiver: The SN65EPT21 differential PECL-to-TTL translator operates on a +3.3-V supply and ground only; it includes circuitry to maintain inputs at Vcc/2 when left open.
Resources: Data sheet
- Operating range: LVPECL Vcc=3.0V to 3.6V with GND=0V
- SOIC-8 and TSSOP-8 packages
- Applications: Data and clock transmission over backplane, signal level-conversion for clock or data
SN65EPT21 Price (1ku): $3.85 – $3.50 |
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Firewire ESD Clamp with Live-Insertion Detection Circuit: The TPD4S1394 provides a robust system-level ESD solution for the IEEE.1394 port along with a live insertion detection mechanism for high-speed lines interfacing a low-voltage, ESD-sensitive core chipset. The device eliminates the need for at least 12 to 15 board components including ESD clamps, FET switch, comparator, resistors, and capacitors.
Resources: Data sheet
- Integrated late Vg detection mechanism generates FWPWR_EN flag
- On-chip 600ms timer delay mechanism
- Application: IEEE 1394 live insertion protection
TPD4S1394 Price (1ku): $0.23 |
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Dual-Channel Square/Sine-to-Square Wave Clock Buffer: The CDC3RL02 highly-integrated 1:2 sine/square to square-wave buffer includes power-saving features (integrated LDO that acts as power switch), a small WCSP package, and overall reduced BOM cost.
Resources: Data sheet, ClockPro™ programming software (free) and software demo video
- 1:2 low jitter clock sine-to-sine clock buffer
- On-chip LDO for low-noise TCXO
- Applications: Cell phones, GPS, wireless LAN, FM radio, WiMAX, W-BT
CDC3RL02 Price (1ku): $0.90 |
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2-W Stereo Audio Power Amplifier with Advanced DC Volume Control: The TPA6012A4 amp drives 3 W/channel of continuous RMS power into a 3-Ω load. Advanced DC volume control minimizes external components and allows BTL (speaker) volume control and SE (headphone) volume control.
Resources: Data sheet, block diagram, EVM
- 32-step DC volume control: steps from –40dB to +18dB
- Lower than –80dB mute attenuation
- Applications: LCD monitors and notebooks benefit from the integrated feature set that minimizes external components without sacrificing functionality
TPA6012A4 Price (1ku): $1.35 – $1.20 |
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125-W Stereo/250-W Mono PurePath™ HD Analog-Input Power Stage: The TAS5611 high-performance Class-D amp drives up to 125-W stereo into 4- to 8-Ω speakers from a single 32.5-V supply. Integrated closed-loop feedback technology (PurePath HD) enables traditional AB-amp performance (<0.03% THD at 1W into 4Ω) while providing the power efficiency of traditional class-D amps.
Resources: Data sheet, EVM
- Signal bandwidth up to 80-kHz for high-frequency content from HD sources
- Flat THD at all frequencies for natural sound
- Achieves performance levels of Class AB amps while eliminating large, expensive transformers and heatsinks
TAS5611 Price (1ku): $4.75 – $4.30 |
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System Block Diagrams: |
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| NEW LITERATURE AND VIDEOS |
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Guides:
Audio Guide |
| NexFET™ Power MOSFETs Quick Reference Guide |
| Power Management for Altera® Quick Reference Guide |
| Avionics Guide |
| Power Management Guide 2010: Now includes embedded links to product folders in device articles and selection tables. |
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Application Reports:
Simple MPPT-Based Lead Acid Charger using bq2031 |
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TLK313x/CDCM7005 Multi-Hop Performance |
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Selecting Transistors for Hot-Swap Applications |
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Updating bq275xx Firmware at Production |
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DN118 - Porting SimpliciTI™ to the SmartRF CCxx10 Target Board |
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White Papers:
TI’s Compact Power Solution for Virtex-6 FPGAs |
Green Wireless Base Stations: Drivers and Enablers |
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Videos:
TI’s TPS229xx Series of Load Switches
Enable or disable subsystems in order to optimize the overall power budget of a system and remove any undesired leakages. |
DualCool™ NexFET™ Power MOSFETs
Industry’s first standard-footprint mosfet that offers 80% higher power dissipation and conducts 50% more current. |
| Industry’s Highest Power Class-D Amps-TAS5630/1 |
LED Streetlight Demo
This design supports up to 30 high-brightness LEDs in series up to 900mA av current. |
MSP430™ TPS62260 DALI LED EVM
Translates between the MSP430 voltage levels and the DALI physical layer |
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Technology Days 2010: Make plans to join TI for a day packed with technical design sessions and technology exhibits. The seminars provide a learning forum where practical high-performance design solutions, tools, techniques, topologies and examples will be presented. First dates and locations are:
- March 23 – Anaheim, CA
- March 30 – San Diego, CA
- April 21 – Vancouver, BC, Canada
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| COMPANY-AUTHORED ARTICLES IN THE MEDIA |
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“A new approach for driving high-power LED lighting applications,” by Jim Aliberti.
LED Journal, October 2009. |
| “Choosing the optimal LED backlight driver for portable MFF displays,” by Jeff Falin. EDN, October 2009. |
| “State Of-The-Art IC: Transmitters in Ultrasound Devices,” by Ismail Oguzman and Arash Loloee. Wireless Design & Development, October 2009. |
“SCB (Part 34): Designing the audio-signal chain for non-audio experts, Part 2,”
by Dafydd Roche. Planet Analog.com, October 2009. |
| “Control jitter and interference during clock distribution,” by Lin Wu. Electronic Design, October 2009. |
“Designing an EMC-Compliant Automotive Switching Buck Regulator,”
by Sam Patel, and John Rice. ECN, October 2009. |
| “POWER TIP #16: Snubbing the Forward Converter,” by Robert Kollman. Power Management DesignLine.com, October 2009. |
| “BAKER’S BEST: Take a risk – throw those bits away!,” by Bonnie Baker. EDN, October 2009. |
| “Understanding Regulations when Designing a Wireless Product in the Unlicensed Frequency Bands (Part 1 of 3),” by Iboun Sylla. RF DesignLine.com, October 2009. |
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| CUSTOMER SUPPORT CONTACT INFORMATION |
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Visit TI’s Online 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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