DC/DC controllers boast 96% power efficiency

Two new highly efficient, synchronous DC/DC buck controllers support input voltages from 4.5 to 28V.

Two new highly efficient, synchronous DC/DC buck controllers support input voltages from 4.5 to 28V.

The new controllers leverage TI's innovative Predictive Gate Drive technology to achieve up to 96% power efficiency and ease circuit design in nonisolated power systems in networking, telecomms, wireless basestations and computer server applications.

The TPS40070 and TPS40071 single-chip devices expand TI's efforts to enable increased high performance over wide input voltage ranges.

Both controllers enhance operation with user-programmable power supply features such as undervoltage lockout, soft-start and high-side short-circuit protection.

For added flexibility TI offers the TPS40070 in a source-only mode and the TPS40071 with full source/sink operation.

Each device has programmable fixed frequency up to 1MHz and voltage feedforward to provide greater line regulation over the entire input voltage range.

TI's integrated Predictive Gate Drive technology minimises diode conduction losses associated with the high-side and synchronous rectifier N-channel mosfet transitions, resulting in the highest possible efficiency performance.

The TPS40070 and TPS40071 controllers are supported by TI's TPS40K Designer software.

A simple design tool for novice and experienced power supply designers using TI's TPS40K family of controllers, the software includes advanced analysis tools that allow designers to conduct worst-case loop response analysis and component characterisation.

The TPS40K Designer software, evaluation modules, application notes and reference designs are available through the TI power website.

Both DC/DC controllers come in 16-pin TSSOP PowerPad packages, and are available now from TI and its authorised distributors.

Suggested resale pricing for the TPS40070 and TPS40071 devices is $1.35 each in quantities of 1000 units.

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