IC manufacturers Texas Instruments

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Texas Instruments UCC28740 | Demoboard TIDA-00961

Highly Efficient, 1.6kW High Density GaN Based 1MHz CrM Totem-pole PFC Converter Reference Design

Overview

TopologyFlyback Converter
Input voltage400 V
Switching frequency91-210 kHz
Output 17 V
IC revisionE2

Description

High frequency Critical-Conduction-Mode (CrM) Totem-pole power factor correction (PFC) is a simple approach for designing high density power solutions using GaN. The TIDA-0961 reference design uses TI’s 600V GaN power stage, LMG3410, and TI’s Piccolo™ F280049 controller. This high density (165 x 84 x 40 mm) 2-stage interleaved 1.6kW design is ideal for many space constrained applications such as server, telecom, and industrial power supplies. Interleaving of the power stages reduces input and output ripple currents. Hardware is designed to pass conducted emissions, surge, and EFT requirements and helps designers achieve 80+ Titanium specifications

Features

  • Compact power stage of size 65 x 40 x 40 mm with power density of >250W/inch3
  • 98.7% efficiency at full load and 230-V AC input
  • TI’s LMG3410 GaN power stage with an integrated driver and protection ensures circuit reliability and eases design
  • Full digital control using TI’s Piccolo™ F280049 controller
  • Eliminates need for external cooling up to 55°C ambient operation and 50% load

Typical applications

  • Industrial AC-DC
  • Merchant Network & Server PSU / Merchant Telecom Rectifiers

Products

Order Code Data­sheet Simu­lation Downloads Product seriesCTol. CVR
(V (DC))
SizeOperating TemperatureDF
(%)
RISOCeramic TypeL
(mm)
W
(mm)
H
(mm)
Fl
(mm)
PackagingZ @ 100 MHz
(Ω)
Zmax
(Ω)
Test Condition ZmaxIR 2
(mA)
RDC max.
(Ω)
Type Samples
885012206034SPEC
8 files WCAP-CSGP MLCCs 16 V(DC)1 nF ±10% 16 0603 -55 °C up to +125 °C 3.510 GΩ X7R Class II 1.6 0.8 0.8 0.4 7" Tape & Reel
742792641SPEC
9 files WE-CBF SMT EMI Suppression Ferrite Bead 0603 -55 °C up to +125 °C 1.6 0.8 0.8 0.3 300 450 250 MHz 2000 0.15 High Current
Order Code Data­sheet Simu­lation
885012206034SPEC
742792641SPEC
Samples
Order Code Data­sheet Simu­lation Downloads Product seriesCTol. CVR
(V (DC))
SizeOperating TemperatureDF
(%)
RISOCeramic TypeL
(mm)
W
(mm)
H
(mm)
Fl
(mm)
PackagingZ @ 100 MHz
(Ω)
Zmax
(Ω)
Test Condition ZmaxIR 2
(mA)
RDC max.
(Ω)
Type Samples