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December 2009 |
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| In this issue |
Featured Video |
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14-Bit, 250-MSPS, Ultra-Low Power ADC: The 275-mW ADS4149 reduces ADC power budget by 30% over 14-bit, 250-MSPS alternatives. Dynamic power scaling reduces power consumption to 215mW at 160MSPS.
Resources:
Data sheet, EVM
- Highest SNR/SFDR of any 250 MSPS ADC consuming less than 400mW of power
- Gain, I/O interface and other programmable settings allow device to be optimized to your needs
- Applications: Battery-powered, software-defined radios, portable test and measurement equipment, high-density wireless receivers
ADS4149 Price (1ku): $89 |
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4-Bridge Serial Interface Motor Driver: A general-purpose, highly robust motor driver designed to meet the needs of high-volume, cost-sensitive applications, the DRV8823 offers a higher level of integration than single-channel drivers, thus reducing the size and cost of multiple motor drives.
Resources:
Data sheet, EVM
- Robust protection circuitry including over current protection (OCP)
- 4 independently controlled H-bridges integrated into a single package, reducing complexity of board design
- Applications: Printers, scanners, office automation machines, gaming machines, factory automation, robotics
DRV8823 Price (1ku): $2.20 – $2.00 |
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Power Management IC for Digital Set-Top Boxes: The TPS6523x provides a PWM buck controller, two adjustable synchronous buck regulators, two independent USB power switches and a supply voltage supervisor to provide main power functions for satellite set-top boxes (STB), xDSL and cable modem applications operating off a single 12-V to 22-V supply.
Resources:
Data sheet
- Smallest total solution for set-top boxes with 90%
system efficiency (including all rails) for typical STB applications
- Up to 5%
better efficiency (full load) compared to discrete solutions
TPS65230 Price (1ku): $3.10 – $2.80 |
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3-V to 28-V Input Synchronous Step-Down Controller with D-CAP+™ Mode and Integrated Gate Drivers: The TPS51513 provides the tightest output voltage tolerance for the latest ASIC cores, the lowest output capacitor count (typically one fewer bulk output cap), and unparalleled design flexibility with 3-bit VID programming of the output voltage. The device eliminates feedback compensation components and reduces the output capacitance through use of DCAP+ topology and output overshoot reduction (OSR).
Resources: Data sheet
- TI factory custom VID programming option
- Integrated high-current MOSFET gate drivers (8-A low-side driver sink current)
- Applications: General IC VCORE apps
TPS51513 Price (1ku): $1.30 – $1.45 |
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Ultra-Low Power, Low Input Voltage, Current-Limited Load Switch: The TPS22946 provides the user with a single-device, easy-to-use load switch solution optimized for battery-operated equipment. The device features an average typical 1µA quiescent current, which make it ideal for portable applications.
Resources:
Data sheet
- Ultra-low rON
- 1.4mm x 0.9mm x 0.5mm WCSP package
- Applications: Fingerprint module protection
TPS22946 Price (1ku): $0.55 |
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Low-Input, 20-V/1.1-A Step-Up DC/DC Converter with Integrated Power Diode and Input/Output Isolation: The TPS61093 is a 1.2-MHz, fixed-frequency boost converter designed for high reliability, with an integrated 20-V power switch, input/output isolation switch, and power diode. When the output current exceeds the overload limit, the IC's isolation switch opens up to disconnect the output from the input, protecting the IC and the input supply.
Resources: Data sheet, EVM
- Applications: Portable medical consumer apps, OLED power supply, 3.3-V to 12-V and 5-V to 12-V boost converter applications
TPS61093 Price (1ku): $1.45 – $1.60 |
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3-MHz, 500-mA Step-Down Converter in 1 x 1.5-mm SON: The TPS6223x is a low-cost, general-purpose DC/DC converter designed for price-sensitive consumer applications.
Resources: Data sheet
- VIN from 2.05V to 6V
- Power-save mode
- Applications: LDO replacement, portable audio, portable media, cell phones, low-power wireless
TPS62234 Price (1ku): $0.45 – $0.50 |
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Quad Sine-Wave Clock Buffer with LDO: The CDC3S04 is a highly-integrated 1:4 sine-wave buffer that includes power-saving features (integrated LDO that acts as power switch) and a small WCSP package (reduces board footprint up to 50%).
Resources:
Data sheet
- Serial I²C interface
- 1:4 low jitter clock; sine-to-sine clock buffer
- Applications: Cell phones, smartphones, mobile handsets, portable systems, wireless modems, and system clock
CDC3S04 Price (1ku): $1.80 |
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±6-V, +12-V Low rON Single SPDT Analog Switch: The TS12A12511 allows 0V to 12V or -6V to +6V signals to pass through the switch I/Os, essential when interfacing with devices such as dual-supply op amps that output ±5V signals. The control input is TTL/CMOS-compatible, allowing direct interface with +3.3V or +5V processor GPIOs.
Resources: Data sheet
- Switch designed for fast turn on/turn off times, enabling quick switching between the two throws
- <1µA (max) current consumption
- Applications: Automatic test equipment, power routing, communication systems, data acquisition systems, sample-and-hold systems, relay replacement, battery-powered systems
TS12A12511 Price (1ku) $0.55 |
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Low-Noise, 900-kHz, RRIO, Precision Zero-Drift Op Amps: The OPA378 and OPA2378 feature rail-to-rail input and output swing, high DC precision and very low noise. The OPA378 op amp offers an unmatched combination of low noise at low power and at wide gain bandwidth.
Resources: Data sheet
- Low noise: 0.4 µVpp, 0.1 to 10Hz, 20nV/√Hz at 1kHz
- Zero-drift series: Low Drift: 0.1µV/°C, low Vos: 50µV (max)
- Applications: Portable medical devices (glucose meters, oxygen meters, heart-rate monitors), weigh scales, battery-powered instruments, thermopile modules
OPA2378 Price (1ku): $1.10 – $1.25 |
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Low-Cost, Precision CMOS Zero-Drift Op Amp: The OPA330 features low power at 35µA of max Iq and combines low offset (8µV) and low drift (0.02µV/°C) to bring a high level of performance to price-sensitive applications.
Resources:
Data sheet
- Wide supply range: 1.8V to 5.5V and rail-to-rail input and output operation
- Applications: Battery-powered instruments, temperature measurements, transducer apps, electronic scales, medical instrumentation, handheld test equipment
OPA330 Price (1ku) $0.65 – $0.75 |
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System Block Diagrams:
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| NEW LITERATURE AND VIDEOS |
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Literature:
Power Management Guide 2010: Featured products, design factors and selection tables. |
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2009 Medical Imaging: Featuring ultrasound CT scanners, MRI, digital X-ray, PET scanner and more. |
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Little Logic Products Selection Guide: Performance comparisons, competitor cross-reference tables and selection tables. |
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Harsh Environment Product Portfolio |
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Application Reports:
Transimpedance Considerations for High-Speed Operational Amplifiers |
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Driving High-Speed A/D Converters |
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Determining Minimum Acquisition Times for SAR ADCs |
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Simplifying Stability Checks |
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868/915 MHz Antenna Design |
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Videos:
ADS4149 – Lowest Power, 14-bit, 250 MSPS ADC: Consuming just 275mW, the ADS4149 reduces ADC power budget 30% over alternative 14-bit 250 MSPS devices. |
| TI HiRel High Temp Solutions for Downhole Drilling |
| Xilinx Power Estimator (XPE) Demonstration |
Xilinx Development Platforms and TI Power Solutions
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| TI Fusion Digital Power™ GUI Demonstration |
| Meeting the Power Requirements for Xilinx for Spartan®-6 and Virtex®-6 Families |
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| COMPANY-AUTHORED ARTICLES IN THE MEDIA |
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| “BAKER'S BEST: One circuit for system resolution and 12-bit accuracy,” by Bonnie Baker. EDN: Print, August 20, 2009 |
| “Battery and charge managements: choices and tradeoffs,” by Masoud Beheshti. ECN: Print, September 9, 2009 |
| “Search out enhanced monolithic or multi-chip dc-to-dc converters with integrated MOSFETs,” by Rich Nowakowski and Robert Taylor. Power Management DesignLine.com, September 9, 2009 |
| “Reap the Benefits of Integrated Power-Limiting Controller ICs,” by Bob Kando. Electronic Design: Print, September 1, 2009 |
| “POWER TIP #15: Low-Cost, High-Performance LED Driver,” by Robert Kollman. Power Management DesignLine.com, September 16, 2009 |
| “BAKER'S BEST: A designer's guide for op amp gain error,” by Bonnie Baker. EDN: Online, September 17, 2009 |
| “555 Timer Eliminates LED Driver's Microprocessor Control,” Michael Day. EDN: Online, September 21, 2009 |
| “Protecting Low-Voltage Systems or Sensors Against Short Circuits,” by Phillippe Pichot. PET: Print, September 30, 2009 |
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| CUSTOMER SUPPORT CONTACT INFORMATION |
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TI E2E Online Community: 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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