UF3C120150K3S

UnitedSiC SiC FET User Guide December 2019 20V 0V -5V RC snubber Rsnub Csnub W 10 10 10 10 10 10 20 20 10 10 10 20 20 20 10 10 10 10 10 10 20 20 20 4 10 10 20 20 10 10 20 20 10 10 20 20 8 8 4 W 20 20 20 20 20 20 30 30 20 20 20 30 30 30 20 20 20 20 20 20 30 30 30 5 20 20 30 30 20 20 30 30 20 20 30 30 10 10 5 W 30 30 30 30 30 30 50 50 30 30 30 50 50 50 50 50 50 30 30 30 50 50 50 7 30 30 50 50 30 30 50 50 30 30 50 50 15 15 7 W 5 5 5 10 10 10 5 5 10 10 10 5 5 5 5 5 5 10 10 10 5 5 5 3 5 10 5 5 5 10 5 5 5 10 5 5 5 5 3 W 10 10 10 20 20 20 10 10 20 20 20 10 10 10 10 10 10 20 20 20 10 10 10 5 10 20 10 10 10 20 10 10 10 20 10 10 10 10 5 Optional Optional Optional Required Required Required Recommended Recommended Required Required Required Recommended Recommended Recommended Optional Optional Optional Required Required Required Recommended Recommended Recommended Recommended Optional Required Recommended Recommended Optional Required Recommended Recommended Optional Required Recommended Recommended Required Recommended Recommended W 4.7 4.7 4.7 4.7 4.7 4.7 10 10 4.7 4.7 4.7 10 10 10 4.7 4.7 4.7 4.7 4.7 4.7 10 10 10 10 4.7 4.7 10 10 4.7 4.7 10 10 4.7 4.7 10 10 10 10 10 pF 220 220 220 220 220 220 115 115 330 330 330 110 110 110 680 680 680 680 680 680 220 220 220 680 100 100 47 47 150 150 68 68 330 330 110 110 470 470 680 uJ uJ pF ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ 77 16.0 23.0 150 13.8 20.3 15.8 22.5 ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ 5.0 6.9 11.4 ✓ ✓ ✓ ✓ 59 21.6 23.5 ✓ ✓ ✓ 8.0 14.7 16.1 ✓ ✓ ✓ ✓ ✓ 34 ✓ ✓ ✓ ✓ ✓ ✓ ✓ 112 ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ 230 ✓ ✓ ✓ ✓ ✓ ✓ Hard Switching HB LLC application PSFB application 1. UF3CxxxyyyK3S with snubber is best solution for 3L applications. UF series in 3 terminal packages must use a snubber for hard switching. 1. UF3CxxxyyyK3S is not recommended for LLC since it requires snubber which has lower light load Eoff. 1. UF3CxxxyyyK4S is best for 80m, UJ3C is good enough. 2. UJ3C is good if snubber is not available. For higher 50-200kHz 15V W 5 5 5 5 5 5 15 15 5 5 5 15 15 15 5 5 5 5 5 5 15 15 15 3 5 5 15 15 5 5 15 15 5 5 15 15 5 6 3 20-50kHz 12V mW 140 140 140 140 140 140 140 140 78 70 70 70 70 70 43 43 43 43 43 43 43 43 43 11.8 330 330 330 330 172 172 172 172 73 73 73 73 34 34 18.2 150-500kHz 10V mW 110 110 110 110 110 110 110 110 58 58 58 58 58 58 35 35 35 35 35 35 35 35 35 9.3 255 255 255 255 136 136 136 136 56 56 56 56 26 26 13.8 ZVS ZVS application application s LLC s PSFB 50-150kHz Rds(175C) mW 80 80 80 80 80 80 80 80 42 42 42 42 42 42 27 27 27 27 27 27 27 27 27 6.7 150 150 150 150 80 80 80 80 35 35 35 35 16 16 8.6 >100kHz Rds(125C) C/W 0.61 0.61 1 0.61 0.61 1 TBD 0.61 0.35 0.35 0.65 TBD 0.35 TBD 0.26 0.26 0.48 0.26 0.26 0.48 TBD 0.26 TBD 0.15 0.7 0.7 TBD 0.7 0.45 0.45 0.6 0.45 0.27 0.27 TBD 0.27 0.22 0.22 0.15 20-100KHz Rds(25C) A 23 23 18.2 23 23 18.2 TBD 23 40 40 30 TBD 40 TBD 62 62 47 62 62 47 TBD 62 TBD 130 13.8 13.8 TBD 13.8 24 24 TBD 24 47 47 TBD 47 77 77 130 Upto 20kHz RthjC (Typ) A 31 31 25 31 31 25 TBD 31 54 54 41 TBD 54 TBD 85 85 66 85 85 66 TBD 85 TBD TBD 18.4 18.4 TBD 18.4 33 33 TBD 33 65 65 TBD 65 107 107 180 Coss(er) Id (100C) V 650 650 650 650 650 650 650 650 650 650 650 650 650 650 650 650 650 650 650 650 650 650 650 650 1200 1200 1200 1200 1200 1200 1200 1200 1200 1200 1200 1200 1200 1200 1200 Esnub @ 30A Id (25C) TO220-3L TO247-3L D2PAK-3L TO220-3L TO247-3L D2PAK-3L D2PAK-7L TO247-4L TO220-3L TO247-3L D2PAK-3L D2PAK-7L TO247-4L DFN88 TO220-3L TO247-3L D2PAK-3L TO220-3L TO247-3L D2PAK-3L D2PAK-7L TO247-4L DFN88 TO247-7L TO247-3L TO247-3L D2PAK-7L TO247-4L TO247-3L TO247-3L D2PAK-7L TO247-4L TO247-3L TO247-3L D2PAK-7L TO247-4L TO247-3L TO247-4L TO247-4L Esnub @ 10A Vdsmax Units UJ3C065080T3S UJ3C065080K3S UJ3C065080B3 UF3C065080T3S UF3C065080K3S UF3C065080B3 UF3C065080B7S UF3C065080K4S UF3C065040T3S UF3C065040K3S UF3C065040B3 UF3SC065040B7S UF3C065040K4S UF3SC065040D8 UJ3C065030T3S UJ3C065030K3S UJ3C065030B3 UF3C065030T3S UF3C065030K3S UF3C065030B3 UF3SC065030B7S UF3C065030K4S UF3SC065030D8 UF3SC065007K4S UJ3C120150K3S UF3C120150K3S UF3C120150B7S UF3C120150K4S UJ3C120080K3S UF3C120080K3S UF3C120080B7S UF3C120080K4S UJ3C120040K3S UF3C120040K3S UF3SC120040B7S UF3C120040K4S UF3SC120016K3S UF3SC120016K4S UF3SC120009K4S Package Gate Drive voltage positive rail RGON Product Name Hard switched applications. Active rectifier, Totem Pole PFC, Full-bridge etc. Gate Drive voltage negative rail RGOFF 2. UJ3CxxxyyyK3S is good for 80mOhm and above. 3. UF3CxxxyyyK4S has highest efficiency even with snubber. Disclaimer: United Silicon Carbide, Inc. reserves the right to change or modify any of the products and their inherent physical and technical specifications without prior notice. United Silicon Carbide, Inc. assumes no responsibility or liability for any errors or inaccuracies within. Snubber Design Guidelines This SiC FET user guide presents practical solutions and guidelines for using RC snubbers with fast switching SiC devices. The solution is verified by experimental double pulse tests (DPT) results. The snubber loss is precisely measured to assist users in computing the power rating of the snubber resistor. The beneficial impact of the snubber is analyzed for both hard switching and soft switching applications. An application note entitled "Switching fast SiC FETs with a snubber" complements this user guide and can be found at https://unitedsic.com/wp-content/uploads/appnotes/Snubber%20AppNotes_V8.pdf. Basic assumptions: 1. Rgon: minimize Qrr to reduce Eon. 2. Rgoff: Small value gives better VGS waveform. UFK3S needs higher Rgoff to avoid oscillation. 0 is possible. 3. Cascode Rg has big impact on turn on didt while limited effect on dvdt. 4. dvdt is affected by snubber. Guidelines: Snubber Rule Cs (>80m Rdson) Cs (