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Transformers and Flat Wire Toroids for Texas Instruments Solar Inverter Designs

Wurth Electronics’ transformers and flat wire toroids are recommended for high-power solar string inverters

Image of Würth Elektronik's Transformers and Flat Wire Toroids for Texas Instruments Solar Inverter DesignsWurth Electronics, in partnership with Texas Instruments, developed a 10 kW, three-level, three-phase grid tie inverter reference design for solar string inverters TIDA-01606. This project involved creating two flat wire toroids, MID-FLT, with 15 A of rated current. Also in this design are three EPX7 gate drive transformers, MID-HB, and three SN6501 push-pull transformers used to generate isolated bias supplies. This reference design is recommended for customers interested in high-power solar string inverters.

Reference Design: Transformers and Flat Wire Toroids for Texas Instruments Solar Inverter Designs

Features
  • MID-HB: Half-bridge transformers
    • Size: EPX7
    • Isolation voltage: 3,000 VAC
    • Small footprint of 10.16 mm x 9.14 mm
    • Functional insulation
  • MID-FLT: Flat wire power inductors
    • 15 A rated current
    • Low DC resistance
    • High saturation current
  • MID-PPTI: Push-pull transformers
    • Isolation voltage: 5,000 VRMS
    • 8 mm creepage and clearance
    • Designed to meet IEC60950 and IEC60664, reinforced insulation
    • Designed to meet IEC60601, two means of patient protection
  • Lead-free and RoHS compliant
  • Operating temperature: -40°C to +125°C
Applications
  • Solar string inverters
  • Solar central inverters

MID-HB: Half-Bridge Transformers

ImageManufacturer Part NumberDescriptionAvailable QuantityView Details
TRANSFORMER SMD750313626TRANSFORMER SMD87 - ImmediateView Details
TRANSFORMER SMD750313638TRANSFORMER SMD2868 - ImmediateView Details

MID-FLT: Flat Wire Power Inductors

ImageManufacturer Part NumberDescriptionAvailable QuantityView Details
FIXED IND 340UH 15A 50 MOHM TH750343810FIXED IND 340UH 15A 50 MOHM TH115 - ImmediateView Details
FIXED IND 9.5UH 15A 6 MOHM TH750343811FIXED IND 9.5UH 15A 6 MOHM TH71 - ImmediateView Details

MID-PPTI: Push-Pull Transformers

ImageManufacturer Part NumberDescriptionAvailable QuantityView Details
XFRMR RES CONV DC/DC CONV SMD750314839XFRMR RES CONV DC/DC CONV SMD190 - ImmediateView Details
XFRMR RES CONV DC/DC CONV SMD750315504XFRMR RES CONV DC/DC CONV SMD465 - ImmediateView Details
Published: 2019-06-14