Cov Qauv Tsim Kho Mob Rau Diodes nyob rau hauv hluav taws xob hloov dua siab hloov dua siab tshiab?

一, Cov qauv ntawm cov qauv tsim hluav taws xob: Cov ntsiab lus tseem ceeb thiab kev ua tsis tiav
Cov ntsiab lus ntawm Cov Qauv Thermal tsis
Kev sib tshuam kub (TVJ): kub nruab nrab ntawm ib lub bill sib tshuam, uas yog qhov taw qhia tseem ceeb rau ntsuas lub xeev thermal ntawm lub cuab yeej. Raws li "SJ / t 2216 {{{-}} kev sib tw ua kom sov rau silicon yog feem ntau yog 125-150 qib
Thermal Kuj (Rth): Ib qho kev ntsuas uas piav qhia txog kev ua haujlwm ntawm cov cua sov (Rthhjc, rthha) thiab hloov cua sov ua hauj (Zthjc, Zthca). Piv txwv li, Rthjc ntawm Infineon FF400R12KE3G igbt module yog 0.15k / w, qhov kev sib tshuam nrog kub thiab txias, 6.67W ntawm lub zog xav tau dissipated.
Lub ntsiab thermal tsis ua hauj lwm hom ntawm dodes suav nrog:
Thermal tawg: qhov kev sib tshuam kub tshaj cov khoom txwv, ua rau muaj kev puas tsuaj rau kev sib tshuam pn.
Thermal kev nkees: rov qab cua sov tuaj yeem ua rau tawg ntawm cov hlua khi, xws li txheej txheem qaug zog ntawm kev ua haujlwm ntawm cov huab cua ntawm Eutectic vuam ntawm -40 Qib mus txog 125 degree.
Parameter Drift: Kev kub siab ua rau muaj kev nce qib siab (VF) thiab rov qab txoj kev nce qib (QRA
2, Kub Txheej Txheem Tsim: Kaw - lub voj tswj los ntawm kev xaiv rau kev txheeb xyuas
1. Ntaus Ntaus Ntawv Xaiv
Cov Khoom Xaiv:
Silicon (si): haum rau nruab nrab thiab cov hluav taws xob tsawg (<600V), medium frequency (<100kHz) scenarios, with low cost but high thermal resistance.
Silicon carbide (SiC): With a withstand voltage of over 1200V and a 70% reduction in switching losses, it is suitable for high-frequency (>100kHz) and high-temperature (>150 degree) ib puag ncig. Piv txwv li, C3D Series Sic Schottky Diode Txhim Kho Kev Ua Tau Los Ntawm 4% hauv 48V / 12V DC- hloov dua siab tshiab.
Gallium nitride (GAN): Tus hloov pauv tuaj yeem ncav cuag lub MHZ Theem, tab sis nws yuav tsum tau ib qho kev tsav tsheb txuam nrog thiab muaj tus nqi ntau.
Ntim Ntim:
Nto mount ntim (SMD): xws li SM4007 SMD Diode, cov cua sov dissipation cheeb tsam yog peb lub sijhawm ntau dua li-41 ntim, ua rau nws haum rau ntom ntom ntom.
Modular ntim: xws li wossblock modules, sib xyaw ua ke cov chips thiab cua sov disstrates, txo rthjc los ntawm 50%.
2. PCB Layout thiab Tshav Kub Kub Designation
Tooj liab ntawv nyiaj:
Lub zog loj corcuit tau txais loj hlob loj-} {{1} {} {.5mm, Suab 1 hli) tau npaj rau hauv cov ntaub qhwv thaiv kom txo qis.
Piv txwv li: hauv 12kW DC - dc converter, lub diode fws kub tau txo los ntawm 105℃los ntawm kev nce ntom ntawm thermal vias.
Thermal Rho Tawm thiab Chaw Yeem:
Tswj kev deb ntawm ntau dua lossis sib npaug ntawm 3 hli los ntawm kev kub siab (xws li tswj cov chips (thiab yog tias tsim nyog rau rwb thaiv tsev.
Zam kev nqaim caj dab Bottleneck tsim qauv kom ntseeg tau tias kub diffusion.
3. Xaiv los ntawm tshav kub disspipation txheej txheem
Raug thermal tiv taus kev nyhuv thiab tus nqi ntawm tshav kub disspermation qauv muaj cov xwm txheej
Lub Convection Altrection Hwjchim (<100W) 20-50% low
Yuam Kev Cua Txias Zog (100W-5KW) 50-70%
Water cooled high-power (>5kW) 70-90% Siab
Cov hotspots hauv zos (xws li Mosfets / DIODES) ntawm cov kav dej kub / kub sib luag yog 60-80% qhov nruab nrab siab
Cov ntaub ntawv: Ib lub tsheb hluav taws xob them cov chaw nres tsheb adopts dej sib tw ntawm 145℃thiab nce lub hwj chim ceev rau 5kw / l.
3, thermal simulation thiab kuaj xyuas kev pov thawj: ntau npaum kev tswj kev pheej hmoo
1. Thermal Hluav Taws Xob Kev Sib Koom Tes
Cuab Yeej: Spice (Pleeg (Poob Xam) + FlototM / Cepak (Thermal Simulation).
Txheej txheem thev naus laus zis:
Cov tswv yim ua haujlwm Willform (I2F (RMS), I2F (AVG), Peak Tus Nqi V_R, FS).
Extract VF (@ Yog, TJ) thiab QRR (@ DI / DT, V_R) los ntawm phau ntawv ntawm phau ntawv.
Simulate kev sib tw kub faib, ua kom zoo txheej thiab kub dissipation txheej txheem.
Qhov tshwm sim: Ib co photovoltaic inverter txo qhov prevication kev ua yuam kev ntawm Diode junction kub los ntawm ± 15℃mus rau simulation.
2. Cov kev sim ua tiag tiag
Kev ntsuas kub:
Siv qhov thermocouple ze rau hauv qab ntawm cov phuam qhwv taub thiab ib qho hluav taws xob thermal los pab hauv kev nrhiav cov chaw kub.
Ruam lub nra kom nce zog thiab sau cov kev sib tshuam kub hloov nkhaus.
Kub siab laus:
Khiav ntawm tag nrho cov chaw rau 1000 teev ntawm ib qho kub ntawm 85 degree, thiab saib xyuas vf drift (yuav tsum yog<5%).
Kev Xeem Siv Thermal:
-} pa tawm qhov kub ntawm 40℃rau 12000℃rau 1000 zaug rau 1000 zaug thiab tshawb xyuas cov txheej ncaj ncees ntawm cov txheej txheem hlau thiab ntim.
4, kev lag luam daim ntawv thov kev lag luam thiab qauv ua raws
1. Cov ntaub ntawv raug cai
Tsheb Chaw Them Hluav Taws Xob:
Txais cov sic mosenket + Sic Schottky diode module, dej- txias sov sov dua lossis sib npaug rau ntawm 125℃hauv iC 61851-1 tus qauv.
Industrial Inverter:
Siv FF400R12KE3G IGBT Module, Paired nrog rab koob zoo li tus kheej lub tshuab kub ceev, dhau ul 840 txheem ntsuas kub.
Cov ntaub ntawv Chaw Fais Fab Khoom Siv:
The 48V/12V DC-DC converter adopts GaN devices and temperature equalization plates, meeting the DOE 2025 energy efficiency standard (peak efficiency>96%).
2. Ua raws li cov qauv thoob ntiaj teb
IC 60747-1: Qhia rau qhov siab tshaj plaws kub thiab tso cua sov ntawm diodes ntawm dodes (tSTg {{1} degree, 672 teev txwv).
JEDEC JESD51: Define thermal resistance testing methods, including steady-state (JESD51-1) and transient (JESD51-14) testing.
AEC {- Q101: Qhov ntsuas tsheb lag luam yuav tsum tau kuaj ntawm qhov kub thiab txias Cycling Cycling C rau 150 Qib C kom ntseeg tau tias 10-xyoo kev ntseeg tau.