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Step down voltage converter from TI

Texas Instruments (TI) has introduced a wide-input-voltage (VIN) synchronous DC/DC buck converter that provides light load efficiency and ease of design.

The 100-V, 1-A LM5164 step-down voltage converter shrinks board space in rugged battery-powered industrial and automotive power supplies.

Used in conjunction with TI’s WEBENCH Power Designer, this new DC/DC converter can enable simpler, faster power conversion design.

The LM5164 is an easy-to-use, ultra-low quiescent current (IQ) synchronous step-down buck regulator that features a constant on-time (COT) control architecture and integrates high- and low-side power MOSFETs. The highly efficient buck converter operates from a wide input voltage of 6 V to 100 V and delivers up to a 1-A DC load current.

The COT architecture requires no external compensation, while an internal VCC bias supply and bootstrap diode eliminates an additional capacitor.

Key features and benefits of the LM5164

Shrink board space: The new device’s thermally efficient, small-outline integrated circuit (SOIC) PowerPAD package measures 5 mm by 6 mm, which is 30 percent smaller than competitive offerings. Designers can use the LM5164 to create a complete power-supply design in 105 mm2, which is more than 10 percent smaller than competitive offerings.

Highest light load efficiency: The LM5164 offers very low 10-µA typical standby quiescent current. This enables 10 percent better light load efficiency for 24-V to 5-V conversions with a 1-mA load and extends battery life compared to competitive solutions.

Simple, cost-effective design: A standard 8-pin SOIC package, few external components and WEBENCH Power Designer simplify design and reduce cost.

An automotive-grade version is also available.

Author
Neil Tyler

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