Power Electronics PCBs - Yakakwirira-Simba PCB Dhizaini Mirayiridzo

Nei Heavy Copper PCB Haisiyo Nguva dzose Mhinduro

Mazhinji mainjiniya anokanganisa 4-6 oz mhangura yemagetsi emagetsi PCB magadzirirwo, asi inorema mhangura inogadzira matambudziko ekugadzira. Fine-pitch zvikamu zvinova zvisingaite kutengeswa nekuvimbika, uye zvinodhura skyrocket.

Pane kudaro, funga idzi dzimwe nzira dzakasimbiswa:

• Shandisa 2 oz mhangura ine nzira dzakafanana pamatanho akawanda epamusoro-azvino magetsi emagetsi PCB traces.
• Shandisa nzira dzekudira mhangura ine chaiyo yekudziya yekudziya kwesimba semiconductor PCB inokwira.
• Wedzera mabhawa ekunze chete apo ikozvino inodarika 50A nguva dzose.

Papurojekiti ye30kW DC-DC Converter PCB ichangoburwa , takaderedza mitengo ne40% tichishandisa kugoverwa kwemhangura kwakangwara pane kushandisa mhangura inorema. Chinhu chikuru ndechekuti kunzwisisa kuti magetsi anoyerera kupi kana tichifunga kuti zvese zvinoda mhangura yakawanda.

Thermal Via Dhizaini Iyo Inoshanda Chaizvo

Kanganwa mafomula ebhuku nezve thermal vias. Hezvino izvo zvinoshanda mukugadzira:

Isa zvinopisa vias mune 1.2 mm grid pateni pasi pesimba MOSFETs uye IGBTs. Shandisa 0.3 mm dhayamita yakazadzwa ne conductive epoxy-kwete buri vias inoteya flux. Kune magetsi emagetsi PCB musangano ane vapor phase soldering, izvi zvinodzivirira kuumbwa kusina chinhu kunouraya kupisa kwekuita.

Mota yemutengi dhiraivha PCB yakadonhedza tembiricha yekusangana ne15 °C nekungochinja kubva pane zvisina tsarukano kuburikidza nekuiswa kune yedu yakagadziridzwa grid patani. Iwoyo musimboti unoshanda kana uri kugadzira 5 W
Simba Shandura PCB kana 5 kW maindasitiri emagetsi module PCB.

Gate Drive Layout-Iyo Inoita kana Kuputsa Factor

Yakashata gedhi dhiraivha dhizaini inoparadza akawanda simba semiconductors kupfuura chero imwe dhizaini kukanganisa. Nhambwe kubva kumutyairi kuenda kuMOSFET gedhi haifanire kudarika 15 mm. Asi kureba hazvisi zvese.

Zvinhu zvakakosha zvekuchinja kwakavimbika:

• Kupatsanura sosi uye kunyura nzira dzine akasiyana resistor values.
• Chengetedza gedhi loop nzvimbo iri pasi pe50 mm².
• Usambofa wakatevedza magedhi pedyo nepanochinjika.
• Shandisa 0805 gedhi resistors, kwete 0603-vanobata kuvhiya mafungu zviri nani.

Maitiro edu ekugadzira maPCB anosanganisira kuongororwa kwemaziso otomatiki kunyanya pakuongorora geometry yegedhi redhiraivha, kubata matambudziko ehurongwa hwemagadzirirwo emagetsi asati akuvadzwa nemidziyo yemagetsi inodhura.

EMI Kuderedza Pasina Kuwedzera Mutengo

Inodhura EMI mafirita anowanzo kutsiva yakashata PCB marongero. Smart magetsi emagetsi PCB dhizaini inoderedza kuburitswa panzvimbo. Position input capacitors mukati me10 mm yekuchinja zvishandiso. Gadzira nzira dzekudzoka zvakananga pasi pepamusoro-frequency trace uchishandisa ndege dzepasi.

Kune magadzirirwo ePCB eAC-DC Converter , shandisa maY-capacitors nemazvo—haasi ekungopasa bvunzo dzekuchengetedza chete. Aise pakati penzvimbo dzekutanga nedzechipiri apo ma common-mode currents anoyerera zvechisikigo, kwete zvisina kurongeka achiyambuka chipingamupinyi chekuzviparadzanisa.

Component Selection Reality Check

Iyo mota-giredhi capacitor yakarongerwa 125 ° C? Inogona kugara maawa 1000 pane tembiricha iyoyo. Kwemakore gumi akavimbika mumagetsi emagetsi PCB maapplication, derate ne20 °C zvishoma. Izvi zvinoshandawo kune emagetsi inductors - saturation ikozvino ratings inotora 20 °C ambient, kwete iyo 70 °C mukati meyako yakavharirwa.

Tine database yehuwandu hwekutadza kwezvikamu kubva kuzviuru zvemagetsi emagetsi ePCB. Zvinoshamisa kuti, ma connectors anokundikana kazhinji kupfuura ma semiconductors kana kubviswa kwakakodzera kukaitwa. Ndosaka sevhisi yedu yekugadzira magetsi ichisanganisira kuyedzwa kwekumanikidzwa kwe connector kupfuura zvinodiwa ne datasheet.

Kuedza Kunodzivirira Kukundikana Kwemunda

Basic functionality test haina kukwana magetsi emagetsi. Thermal cycling kubva -40 °C kusvika +85 °C inoratidza marginal solder joints. Humidity kuyedzwa pa85 °C / 85% RH inofumura isina kukwana conformal coating. Asi bvunzo yakakosha? Yakazara-simba kupisa-mukati pane yakanyanya rated tembiricha.

Taona kuti kupisa kwemaawa makumi mana nemasere kunobata 90% yekukundikana kwekutanga mumaassemblies ePower Inverter PCB . Mutengo wekutsva kwemaassemblies hauna kunyanya kukosha kana tichienzanisa nekudzoka kwema field.

Sarudza zvinhu zvePCB laminate zvakakodzera tembiricha yako yekushanda. Standard FR-4 inoshanda zvakanaka kusvika 130 °C, asi zvinhu zvine Tg yakawanda zvinodzivirira kucheka-cheka mumashandisirwo anorema. Kune mafrequency anopfuura 500 kHz, funga nezvezvinhu zvine kurasikirwa kushoma kuti urambe uchishanda zvakanaka.

Batana neHighleap Electronics yekugadzira maPCB emagetsi ane simba ayo anopa kuvimbika, kwete kungoti zvinhu zvakatsanangurwa. Hunyanzvi hwedu hwekugadzira maPCB hunokubatsira kudzivirira matambudziko anowanzoitika paunenge uchigadzirisa mutengo nekushanda zvakanaka.