Science Explorer Back to mapMap
Discussion
Company · Goleta · United States

Transphorm (United States)

transphormusa.com/enROR OpenAlex
Research works
70
▼ 62% vs 2018-21
Citations
1.7k
24.6 per fractional work
Top-10% rate
37.3%
all institutions 10.0%
Open access
7%
world 40%
International
12%
world 18%
Transphorm (United States)

Not ranked overall: Transphorm (United States) is under the volume floor below which a citation excellence rate is noise. Not ranked is not the same as ranked last.

Which fields of science does Transphorm (United States) work in?

In all years, 92% of research at Transphorm (United States) is in Physical Sciences, 8% in Social Sciences. Its largest fields are Engineering (63%), Physics and Astronomy (22%), Materials Science (5%). It does 2.1× the world's share of Physical Sciences.

Physical Sciences: 64 fractional works · 91.5% of its workEngineering: 44 fractional works · 62.9% of its workElectrical and Electronic Engineering: 36 fractional works · 51.4% of its workAerospace Engineering: 3 fractional works · 4.7% of its workCivil and Structural Engineering: 1 fractional works · 1.9% of its workControl and Systems Engineering: 1 fractional works · 1.9% of its workAutomotive Engineering: 1 fractional works · 0.9% of its workMechanical Engineering: 1 fractional works · 0.8% of its workSafety, Risk, Reliability and Quality: 0 fractional works · 0.6% of its workBuilding and Construction: 0 fractional works · 0.5% of its workPhysics and Astronomy: 16 fractional works · 22.5% of its workCondensed Matter Physics: 15 fractional works · 21.0% of its workAtomic and Molecular Physics, and Optics: 1 fractional works · 1.4% of its workMaterials Science: 4 fractional works · 5.2% of its workElectronic, Optical and Magnetic Materials: 3 fractional works · 4.5% of its workMaterials Chemistry: 0 fractional works · 0.7% of its workEnvironmental Science: 1 fractional works · 0.9% of its workGlobal and Planetary Change: 0 fractional works · 0.7% of its workSmaller subfields together: 0 fractional works · 0.2% of its workComputer Science: 0 fractional works · 0.0% of its workSocial Sciences: 5 fractional works · 7.6% of its workSocial Sciences: 3 fractional works · 3.7% of its workTransportation: 2 fractional works · 2.6% of its workPolitical Science and International Relations: 1 fractional works · 1.0% of its workSmaller subfields together: 0 fractional works · 0.1% of its workEconomics, Econometrics and Finance: 2 fractional works · 3.2% of its workGeneral Economics, Econometrics and Finance: 2 fractional works · 3.1% of its workSmaller subfields together: 0 fractional works · 0.0% of its workArts and Humanities: 0 fractional works · 0.4% of its workLiterature and Literary Theory: 0 fractional works · 0.2% of its workSmaller subfields together: 0 fractional works · 0.1% of its workBusiness, Management and Accounting: 0 fractional works · 0.2% of its workDecision Sciences: 0 fractional works · 0.2% of its workLife Sciences: 0 fractional works · 0.6% of its workAgricultural and Biological Sciences: 0 fractional works · 0.5% of its workAgronomy and Crop Science: 0 fractional works · 0.3% of its workSmaller subfields together: 0 fractional works · 0.2% of its workPharmacology, Toxicology and Pharmaceutics: 0 fractional works · 0.1% of its workHealth Sciences: 0 fractional works · 0.3% of its workMedicine: 0 fractional works · 0.3% of its workALL ITS WORKTransphorm(United States)70fractional works, all years
Life Sciences1%Physical Sciences92%Health Sciences0%Social Sciences8%

Each ring splits the one inside it: the four domains of science, their fields, their subfields. Size is fractional works in all years. Every slice is a page; the interactive view zooms down to single topics and colours each by how much more of it this institution does than the world.

Its 4 domains and 13 fields, with their numbers
    1. Engineering4462.9%
    2. Physics and Astronomy1622.5%
    3. Materials Science45.2%
    4. Environmental Science10.9%
    5. Computer Science00.0%
    1. Social Sciences33.7%
    2. Economics, Econometrics and Finance23.2%
    3. Arts and Humanities00.4%
    4. Business, Management and Accounting00.2%
    5. Decision Sciences00.2%
    1. Agricultural and Biological Sciences00.5%
    2. Pharmacology, Toxicology and Pharmaceutics00.1%
    1. Medicine00.3%
All of science, and how each field's share has moved since 1950: the Science domain explorer

Field profile

Location quotient across every field it publishes in: outside the ring is more than an institution of this size would be expected to publish, inside it is less.

Pharmacology, Toxicology and Pharmaceutics: 3.19× its world share, 0 worksPharmacology, Toxico…Computer Science: 0.05× its world share, 0 worksComputer ScienceEngineering: 4.21× its world share, 6 worksEngineeringMaterials Science: 0.72× its world share, 0 worksMaterials SciencePhysics and Astronomy: 12.94× its world share, 3 worksPhysics and AstronomyMedicine: 0.13× its world share, 0 worksMedicineEconomics, Econometrics and Finance: 0.18× its world share, 0 worksEconomics, Econometr…Social Sciences: 0.09× its world share, 0 worksSocial Sciences1×world share
more than its size predictsabout as predictedless

Rings at 0.5×, 1× and 2×. Widest outward: Physics and Astronomy, 12.9×. Every wedge is a field page.

All 8 fields, with their numbers
  1. Physics and Astronomy12.94×3 works
  2. Engineering4.21×6 works
  3. Pharmacology, Toxicology and Pharmaceutics3.19×0 works
  4. Materials Science0.72×0 works
  5. Economics, Econometrics and Finance0.18×0 works
  6. Medicine0.13×0 works
  7. Social Sciences0.09×0 works
  8. Computer Science0.05×0 works

Who are the top researchers at Transphorm (United States)?

Ranked on the quality score, John Gritters and Tsutomu Hosoda lead among researchers whose main affiliation is Transphorm (United States).

  1. 1 John Gritters United States · #3,564,955 worldwide 356 citations · 15 works
  2. 2 Tsutomu Hosoda United States · #5,337,612 worldwide 281 citations · 23 works
All ranked researchers at Transphorm (United States)

What are the most cited papers from Transphorm (United States)?

The most cited paper from Transphorm (United States) is "GaN-on-Si Power Technology: Devices and Applications" (Kevin Jing Chen, Oliver D. Häberlen, Alex Lidow et al., 2017), with 1,708 citations. Next come "A 97.8% Efficient GaN HEMT Boost Converter With 300-W Output Power at 1 MHz" (260) and "Current status and scope of gallium nitride-based vertical transistors for high-power electronics application" (155).

Most cited papers
#PaperReleasedCitations
1 GaN-on-Si Power Technology: Devices and Applications Kevin Jing Chen, Oliver D. Häberlen, Alex Lidow et al. · IEEE Transactions on Electron Devices 27 Feb 2017 1,708
2 A 97.8% Efficient GaN HEMT Boost Converter With 300-W Output Power at 1 MHz Yifeng Wu, Matt Jacob-Mitos, M. Moore et al. · IEEE Electron Device Letters 29 Jul 2008 260
3 Current status and scope of gallium nitride-based vertical transistors for high-power electronics application Srabanti Chowdhury, Brian L. Swenson, Man Hoi Wong et al. · Semiconductor Science and Technology Open access 21 Jun 2013 155
4 Deadbeat Predictive Power Control of Single-Phase Three-Level Neutral-Point-Clamped Converters Using Space-Vector Modulation for Electric Railway Traction Wensheng Song, Junpeng Ma, Liang Yong Zhou et al. · IEEE Transactions on Power Electronics 6 Feb 2015 155
5 Efficiency Comparison Between Si-IGBT-Based Drive and GaN-Based Drive Kohei Shirabe, Mahesh M. Swamy, Jun-Koo Kang et al. · IEEE Transactions on Industry Applications 19 Nov 2013 117
All 74 most cited papers, with filters and sorting

Which keywords describe research at Transphorm (United States)?

By fractional works in all years, weighted toward what it does more of than the world: Power Devices, Nanowires, High-Temperature Electronics, Reliability, Wide Bandgap Semiconductors, Band Parameters, Semiconductors and III-Nitrides.

▲ more of its work than of the world's◆ about the world's share▼ less than the world's

Size is fractional works in all years in the topics tagged with each word; colour is the word's share of this institution's work against its share of the world's. The 40 words are chosen for being large and distinctive. Each links to the topic it comes from most.

All 40 words, with their numbers
  1. Power Devices18▲ 354×2 topics
  2. Nanowires17▲ 105×4 topics
  3. High-Temperature Electronics17▲ 334×2 topics
  4. Reliability16▲ 252×1 topic
  5. Wide Bandgap Semiconductors16▲ 520×1 topic
  6. Band Parameters16▲ 183×2 topics
  7. Semiconductors15▲ 83×2 topics
  8. III-Nitrides15▲ 478×1 topic
  9. Light-Emitting Diodes15▲ 165×1 topic
  10. Power Electronics9▲ 46×7 topics
  11. Atomic Layer Deposition7▲ 80×1 topic
  12. High-k Dielectrics7▲ 80×1 topic
  13. Renewable Energy Integration7▲ 40×3 topics
  14. DC-DC Converters4▲ 122×1 topic
  15. High-Frequency Power Conversion4▲ 122×1 topic
  16. Risk Assessment3▲ 7.1×2 topics
  17. Air Traffic Management3▲ 243×1 topic
  18. Conflict Resolution3▲ 135×1 topic
  19. Semiconductor3▲ 12×2 topics
  20. Thin Films3▲ 15×2 topics
  21. Model Predictive Control3▲ 17×1 topic
  22. Multilevel Converters3▲ 88×1 topic
  23. Photodetectors2▲ 34×2 topics
  24. Airport Competition2▲ 238×1 topic
  25. High-speed Rail2▲ 238×1 topic
  26. Electromigration2▲ 54×2 topics
  27. Gallium Oxide2▲ 93×1 topic
  28. Ultrawide Bandgap2▲ 93×1 topic
  29. Public Transport2▲ 38×1 topic
  30. Travel Behavior2▲ 29×1 topic
  31. Integrated Circuits1▲ 8.3×2 topics
  32. Aviation1▲ 67×2 topics
  33. CMOS1▲ 19×1 topic
  34. EMI1▲ 47×1 topic
  35. Electromagnetic Compatibility1▲ 47×1 topic
  36. Interfacial Reactions1▲ 50×1 topic
  37. Lead-free Solders1▲ 50×1 topic
  38. Low-k Dielectrics1▲ 58×1 topic
  39. Microelectronics1▲ 53×1 topic
  40. Oscillators1▲ 35×1 topic

Which research topics does Transphorm (United States) publish most on?

By volume in 2022-now: GaN-based semiconductor devices and materials, Silicon Carbide Semiconductor Technologies, Semiconductor materials and devices and Electromagnetic Compatibility and Noise Suppression.

GaN-based semiconductor …3GaN-based semiconductor devices and materials: 3 fractional worksSilicon Carbide Semicond…3Silicon Carbide Semiconductor Technologies: 3 fractional worksSemiconductor materials …2Semiconductor materials and devices: 2 fractional worksElectromagnetic Compatibility and Noise Suppression: 0 fractional worksGa2O3 and related materials: 0 fractional worksAdvanced DC-DC Converters: 0 fractional worksMultilevel Inverters and Converters: 0 fractional worksHVDC Systems and Fault Protection: 0 fractional worksTraffic and Road Safety: 0 fractional worksAutomotive and Human Injury Biomechanics: 0 fractional works
Condensed Matter PhysicsElectrical and Electronic EngineeringElectronic, Optical and Magnetic MaterialsSafety, Risk, Reliability and Quality1 others

Area is fractional works; colour is the subfield each topic belongs to.

  1. 1 GaN-based semiconductor devices and materials Condensed Matter Physics 3 works
  2. 2 Silicon Carbide Semiconductor Technologies Electrical and Electronic Engineering 3 works
  3. 3 Semiconductor materials and devices Electrical and Electronic Engineering 2 works
  4. 4 Electromagnetic Compatibility and Noise Suppression Electrical and Electronic Engineering 0 works
  5. 5 Ga2O3 and related materials Electronic, Optical and Magnetic Materials 0 works
  6. 6 Advanced DC-DC Converters Electrical and Electronic Engineering 0 works
  7. 7 Multilevel Inverters and Converters Electrical and Electronic Engineering 0 works
  8. 8 HVDC Systems and Fault Protection Electrical and Electronic Engineering 0 works
  9. 9 Traffic and Road Safety Safety, Risk, Reliability and Quality 0 works
  10. 10 Automotive and Human Injury Biomechanics Pulmonary and Respiratory Medicine 0 works

How open and international is its research?

Against the world's own shares: the tick on each track. Both are shares of its output, so they sit on one scale and can be read against each other as well as against the world.

openly available7.0%not open93.0%

World: 40% of research is openly available.

with international co-authors11.5%domestic only88.5%

World: 18% is written across borders.

How has Transphorm (United States)'s research output changed?

Output in 2022-2025 was 62% lower than in 2018-2021.

still counting200020102020
grewheldshrank

The same series as a ribbon: one cell per year, darker for more. The line above answers how much; this answers when.

Its share of all research

Growing output can still be a shrinking share: all of science grows. This is Transphorm (United States) as a percentage of every work published that year, 0.000021% in 2024.

still counting0.00010%0.00020%0.00030%Transphorm (United States)0.0000099% in 2025200020102020

Fractional works of Transphorm (United States) over all fractional works that year. How the balance of science has shifted.

Other research institutions in Goleta

All research institutions in Goleta

Research measures only: rankings here say nothing about teaching, admissions or student experience. Comparable institutions and collaboration partners have tabs of their own, above.

Discussion

Ask a question or share a note about Transphorm (United States). Keep it to the research: no personal attacks, advertising or links. Any reader can report a post, which collapses it for everyone until it is opened.