Latest Parts



Texas Instruments

The TPS546C23 devices are PMBus 1.3 Compliant, non-isolated DC-DC converters with integrated FETs, capable of high-frequency operation and 35-A current output from a 5-mm × 7-mm package. Two TPS546C23 devices can be paralleled together to provide up to 70-A load. Current sensing is realized by sampling a small portion of the power stage current and independent on the device temperature. High-frequency, low-loss switching, provided by an integrated NexFET power stage and optimized drivers, allows for very high-density power solutions. The PMBus interface enables the AVS functions through VOUT_COMMAND, flexible converter configuration, as well as key parameters monitoring including output voltage, current, and internal die temperature. Response to fault conditions can be set to either restart, latch-off or ignore depending on system requirements.


  • PMBus™ 1.3 Compliant Converters: 35 A
  • 2-Device Stackable for up to 70 A With Current Sharing
  • Input Voltage Range: 4.5 V to 18 V
  • Output Voltage Range: 0.35 V to 5.5 V
  • 5 mm × 7 mm LQFN Package
  • Single Thermal Pad
  • Integrated 3.2-mΩ and 1.4-mΩ Stacked NexFET™ Power Stage
  • 350-mV to 1650-mV Reference for Adaptive Voltage Scaling (AVS) Function and Margining through PMBus
  • 0.5% Reference Accuracy at 600 mV and Above
  • Lossless Low-Side MOSFET Current Sensing
  • Voltage Mode Control With Input Feed-Forward
  • Differential Remote Sensing
  • Monotonic Start-Up into Pre-Biased Output
  • Output Voltage and Output Current Reporting
  • Internal Die Temperature Monitoring
  • 64 Programmable PMBus Addresses via ADDR0 and ADDR1 Pins
  • Programmable via the PMBus Interface
    • VOUT_COMMAND and AVS VOUT Transition Rate
    • Overcurrent Protection With Thermal Compensation
    • UVLO, Soft-Start and Soft-Stop
    • PGOOD, OV, UV, OT Levels
    • Fault Responses
    • Turn-On and Turn-Off Delays
  • Thermal Shutdown
  • Pin Strapping for Switching Frequency: 200 kHz to 1 MHz
  • Frequency Synchronization to an External Clock or Output Clock to Sync Out



Raspberry Pi Zero W

Raspberry Pi

Five years to the day since the launch of the Raspberry Pi (which sold a hundred thousand units in the first day), the Raspberry Pi Foundation has announced the Raspberry Pi Zero W, a new variant of Raspberry Pi Zero with wireless LAN and Bluetooth, priced at only $10.

So what’s the story?

In November 2015, the diminutive $5 entry-level Raspberry Pi, the Raspberry Pi Zero, was launched. This represented a fivefold reduction in cost over the original Model A: it was cheap enough that one was even stuck on the front cover of The MagPi, risking civil insurrection in newsagents up and down the land.

Over the ensuing fifteen months, Zero grew a camera connector and found its way into everything from miniature arcade cabinets to electric skateboards. Many of these use cases need wireless connectivity.

homebrew "People in Space" indicator

The homebrew “People in Space” indicator in the lobby at Pi Towers is a typical example, with an official wireless dongle hanging off the single USB port: users often end up adding a USB hub to allow them to connect a keyboard, a mouse and a network adapter, and this hub can easily cost more than the Zero itself.

Zero W fixes this problem by integrating more functionality into the core product. It uses the same Cypress CYW43438 wireless chip as Raspberry Pi 3 Model B to provide 802.11n wireless LAN and Bluetooth 4.0 connectivity.


  • 1GHz, single-core CPU
  • 512MB RAM
  • Mini-HDMI port
  • Micro-USB On-The-Go port
  • Micro-USB power
  • HAT-compatible 40-pin header
  • Composite video and reset headers
  • CSI camera connector
  • 802.11n wireless LAN
  • Bluetooth 4.0

The Zero W makes a better general-purpose computer because you’re less likely to need a hub: if you’re using Bluetooth peripherals you might well end up with nothing at all plugged into the USB port. And of course it’s a great platform for experimenting with IoT applications.

Official case

To accompany Raspberry Pi Zero W, we’ve been working with our friends at Kinneir Dufort and T-Zero to create an official injection-moulded case. This shares the same design language as the official case for the Raspberry Pi 3, and features three interchangeable lids:

  • A blank one
  • One with an aperture to let you access the GPIOs
  • One with an aperture and mounting point for a camera

The case set also includes a short camera adapter flexi, and a set of rubber feet to make sure your cased Zero or Zero W doesn’t slide off the desk.

[no prices available]







Reference Designs



Texas Instruments

LIDAR-Pulsed Time-of-Flight Reference Design Using High-Speed Data Converters


Texas Instruments

Automotive 2.4A Dual-Port USB Hub Reference Design With Short-to-Battery Protection


Texas Instruments

Sensorless High-Speed FOC Reference Design for Drone ESC


Texas Instruments

Reference Design for Extending the OPA857 Transimpedance Bandwidth


Texas Instruments

Variable Outputs Single Cell Battery 80W E-Cigarette Buck Boost Reference Design


Texas Instruments

75V/10A Protected Full-Bridge Power Stage Reference Design for Brushed DC Drives


Texas Instruments

24W Boost and Boost-to-Battery Reference Design for Automotive LED Lighting


Texas Instruments

100W Dimmable DC-DC LED Driver with Daylight Harvesting and Wireless Connectivity Reference Design


Texas Instruments

400V – 12V/500W High Frequency Resonant Converter Reference Design Using High Voltage GaN Devices

Application Notes