Reference Design of a GaN primarily based SMPS

Do you wish to develop a compact switch-mode energy provide (SMPS)? Then a gallium nitride (GaN) primarily based FET is a more sensible choice in comparison with a silicon primarily based FET attributable to its larger energy density, smaller gate cost and quicker switching pace.

This text discuses about TIDA-01634, a SMPS refence design for from Texas Devices. TIDA-01634 is a compact SMPS which makes use of a GaN energy HEMTs and the LMG1210 GaN half-bridge driver to appreciate a multi-MHz energy stage with excessive effectivity. The excessive switching frequency of as much as 50MHz permits it to have a really quick response fee making it appropriate for utility akin to in 5G telecom energy, industrial energy provides, server, and many others.

GaN and excessive electron mobility transistors (HEMTs) provides no restoration loss, smaller gate cost, quicker switching, and exhibit a decrease determine of benefit. The usage of half-bridge driver permits it single PWM enter with configurable useless time or two unbiased inputs for high-side and low-side gate drive. Lifeless-time adjustment could be realized with two resistors for low-to-high and high-to-low transition settings from 0 ns to twenty ns. The design can work for prolonged time period attributable to low thermal dissipation and likewise the bootstrap switching motion prevents overvoltage of high-side gate attributable to massive third quadrant voltage drop of GaN HEMTs.

Block diagram of the SMPS

Effectivity of the Design

The design has a excessive effectivity of as much as 97%, picture beneath exhibits the effectivity of the SMPS when the ability stage is operating at 10 MHz with a 85% responsibility cycle with respect to completely different output present.

Design Assets

TI has shared all of the assets akin to utility notes, gerber recordsdata, PCB structure, and many others for this reference design to simplify the designing course of. All of the shared assets could be accessed by clicking on this hyperlink.