By Majeed Ahmad, contributing writer
The new step-down voltage converter from Texas Instruments (TI) combines light-load efficiency with cost efficiency and ease of design in industrial and automotive power supplies. The 100-V, 1-A LM5164 buck converter integrates high- and low-side power MOSFETs to shrink board space by up to 30% in battery-powered industrial and automotive designs.
The new DC/DC converter can work across a wide input voltage range of 6 V to 100 V and delivers up to 1-A DC load current. The chip’s constant on-time (COT) control architecture circumvents external compensation, while an internal VCC bias supply and bootstrap diode eliminates the need for an additional capacitor.
The LM5164, a wide-input-voltage (VIN) synchronous DC/DC buck converter, can be used in conjunction with TI’s WEBENCH Power Designer to enable simpler and faster power-conversion designs. It offers a typical standby quiescent current (IQ ) of 10 µA, and it facilitates 10% better light-load efficiency for 24-V to 5-V conversions with a 1-mA load.
The synchronous step-down buck regulator measures 5 × 6 mm and is thermally efficient for rugged power-supply designs. TI is demonstrating the new buck converter at APEC 2019.
The LM5164 is priced at $1.53 in 1,000-unit quantities. An automotive-grade LM5164-Q1 is also available and is priced at $2.04 in 1,000-unit quantities. The LM5164-Q1EVM-041 evaluation module is priced at $75.
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