Texas Instruments Unveils TPS61170 40-V Boost Converter

Posted by EDA Geek News Staff in Components on Monday, December 10, 2007
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Texas Instruments Incorporated (TI) (NYSE: TXN) introduced a tiny, high-voltage boost converter with an integrated 40-V, 1.2-A FET and a wide input-voltage range of 3-V to 18-V. The high-efficiency device supports boost, SEPIC (single-ended primary inductor converter) and flyback topologies, which are used to regulate single or dual Li-Ion battery inputs. Available in a 2 mm x 2 mm QFN package, the converter simplifies design in industrial or medical point-of-load applications, such as 5-V to 12-V or 12-V to 24-V systems.

TI TPS61170 40-V, 1.2-A Switch Boost ConverterThe TPS61170 operates at a fixed switching frequency of 1.2 MHz, allowing the use of tiny, low-profile inductors and low-value ceramic input and output capacitors. The boost converter features single-wire digital serial interface and pulse width modulation (PWM) inputs, which allows the device to dynamically adjust the output voltage during operation. Protection features of the TPS61170 include soft-start, over-current limit and over-temperature protection.

Key features of TPS61170

  • 3-V to 18-V input voltage range
  • Integrated 40-V, 1.2-A FET switch
  • 1.2-MHz fixed switching frequency
  • Greater than 90 percent efficiency
  • Programmable reference voltage using PWM signal or single-wire digital interface
  • Built-in soft start and over-current limit

Pricing and Availability
The TPS61170 is available today in volume from TI and its authorized distributors. Suggested resale pricing in quantities of 1,000 units is $1.40.

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