1. Plum okooko osisi pad.

1: Oghere na-edozi ahụ kwesịrị ka ọ bụrụ nke na-abụghị metallized. N'oge a na-ere ebili mmiri, ọ bụrụ na oghere a na-edozi bụ oghere mebere, tin ga-egbochi oghere ahụ mgbe a na-agbagharị agbagharị.

2. Idozi oghere na-arị elu dị ka quincunx pads na-ejikarị eme ihe maka ịrịgo oghere GND netwọk, n'ihi na n'ozuzu PCB ọla kọpa na-eji dina ọla kọpa maka GND netwọk. Mgbe etinyere oghere quincunx na PCB shei components, n'ezie, GND jikọtara ya na ụwa. Mgbe ụfọdụ, shei PCB na-arụ ọrụ nchekwa. N'ezie, ụfọdụ adịghị mkpa jikọọ oghere ịrị elu na netwọk GND.

3. Enwere ike ịkụnye oghere nke ihe nkedo ígwè, na-eme ka ọnọdụ ala efu efu na-eme ka usoro ahụ bụrụ ihe na-adịghị mma. Oghere okooko osisi plum, n'agbanyeghị otú nrụgide ahụ si agbanwe, nwere ike ime ka ịghasa ahụ gbadaa mgbe niile.

2. Cross ifuru mpe mpe akwa.

Cross ifuru pad na-akpọ thermal pads, na-ekpo ọkụ ikuku pads, wdg. Ọrụ ya bụ ibelata okpomọkụ dissipation nke mpe mpe akwa n'oge soldering, nke mere na iji gbochie mebere soldering ma ọ bụ PCB peeling kpatara oke okpomọkụ dissipation.

1 Mgbe pad gị na-ala. Usoro obe nwere ike ibelata mpaghara waya ala, belata ọsọ ikposa ọkụ, ma kwado ịgbado ọkụ.

2 Mgbe PCB gị chọrọ ntinye igwe na igwe na-agbagharị agbagharị, paịlị cross-pattern nwere ike igbochi PCB ịpụpụ (n'ihi na a na-achọkwu okpomọkụ iji gbazee tapawa solder)

3. akwa akwa akwa

Anya mmiri bụ njikọ dị oke mmiri n'etiti pad na waya ma ọ bụ waya na via. Ebumnuche nke akwa mmiri bụ iji zere ebe kọntaktị dị n'etiti waya na pad ma ọ bụ waya na via mgbe nnukwu ike mpụga kụrụ bọọdụ sekit. Kwụpụ, na mgbakwunye, akwa akwa akwa nwere ike ime ka bọọdụ sekit PCB mara mma karịa.

Ọrụ nke akwa mmiri bụ iji zere mbelata mberede nke obosara akara mgbaàmà ma mee ka ntụgharị uche, nke nwere ike ime ka njikọ dị n'etiti trace na pad pad na-eme ka ọ bụrụ mgbanwe dị mma, ma dozie nsogbu ahụ na njikọ dị n'etiti pad na trace. mfe agbajikwa.

1. Mgbe ị na-ere ahịa, ọ nwere ike ichebe pad ahụ ma zere ịdaba na pad n'ihi ọtụtụ ihe.

2. Mee ka ntụkwasị obi nke njikọ ahụ sie ike (mmepụta nwere ike izere etching na-enweghị isi, mgbawa kpatara site na ntụgharị, wdg).

3. Mgbochi dị nro, belata mmụba dị nkọ nke impedance

N'ime nhazi nke osisi sekit, iji mee ka mpempe akwụkwọ ahụ dịkwuo ike ma gbochie nkwụsịtụ na waya ahụ n'oge a na-emepụta ígwè ọrụ nke osisi ahụ, a na-ejikarị ihe nkiri ọla kọpa mee ndokwa maka mgbanwe mgbanwe n'etiti pad na waya. , nke a na-eme ka akwa anya mmiri, ya mere a na-akpọkarị ya Anya mmiri (Anya mmiri)

4. ihe eji eme ihe

Ị hụla ndị ọzọ na-agbanwe ike onunu na ụma echekwabara sawtooth iferi ọla kọpa foil n'okpuru nkịtị mode inductance? Gịnị bụ kpọmkwem mmetụta?

A na-akpọ nke a nha nha nha nha, oghere mwepu ma ọ bụ oghere ọkụ.

Oghere ọkụ bụ ụzọ triangles nwere akụkụ dị nkọ na-atụ aka na ibe ya. Ebe kacha dị n'etiti mkpịsị aka bụ 10mil na nke kacha nta bụ 6mil. Otu delta na-agbanye ala, nke ọzọ na-ejikọta na akara mgbaàmà. Triangle a abụghị akụkụ, mana a na-eme ya site na iji akwa mkpuchi ọla kọpa n'ime usoro ntụgharị PCB. Ekwesịrị ịtọ triangles ndị a n'elu oyi akwa nke PCB (componentside) na nkpuchi enweghị ike kpuchie ya.

N'ime ule ịgbanye ọkụ ọkụ ma ọ bụ ule ESD, a ga-emepụta voltaji dị elu na nsọtụ abụọ nke inductor ọnọdụ nkịtị na arcing ga-eme. Ọ bụrụ na ọ dị nso na ngwaọrụ ndị gbara ya gburugburu, ngwaọrụ ndị gbara ya gburugburu nwere ike mebie. Ya mere, a na-ejikọta tube na-agbapụta ma ọ bụ varistor n'otu aka ahụ iji gbochie voltaji ya, si otú ahụ na-arụ ọrụ nke ikpochapụ arc.

Mmetụta nke itinye ngwaọrụ nchebe ọkụ dị oke mma, mana ọnụ ahịa ya dị oke elu. Ụzọ ọzọ bụ ịgbakwunye ihapu ezé na nsọtụ abụọ nke nkịtị-mode inductor n'oge PCB imewe, nke mere na inductor apụta site abụọ ihapu Atụmatụ, na-ezere ihapu site n'ụzọ ndị ọzọ, nke mere na gburugburu Na mmetụta nke mgbe e mesịrị ogbo ngwaọrụ na-ebelata.

Ọpụpụ ntọhapụ anaghị achọ ego ọzọ. Enwere ike ịdọrọ ya mgbe ị na-ese osisi pcb, ma ọ dị mkpa iburu n'obi na ụdị nkwụsịtụ a bụ oghere ikuku nke ikuku, nke enwere ike iji naanị na gburugburu ebe ESD na-emepụta mgbe ụfọdụ. Ọ bụrụ na a na-eji ya n'oge ebe ESD na-eme ugboro ugboro, a ga-emepụta ihe nkwụnye carbon na akụkụ abụọ nke triangular n'etiti oghere nkwụsị n'ihi nkwụsịtụ ugboro ugboro, nke ga-emecha mee ka obere sekit dị na oghere nkwụsị ma mee ka mgbama ahụ dị mkpirikpi na-adịgide adịgide. ahịrị ruo n'ala. Ihe kpatara ọdịda sistemu.