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Method to improve PCB trace conductivity and system therefor

專利號(hào)
US11516905B2
公開(kāi)日期
2022-11-29
申請(qǐng)人
DELL PRODUCTS, LP(US TX Round Rock)
發(fā)明人
Sandor Farkas; Bhyrav Mutnury
IPC分類
H05K1/02; H01L23/64; H01L23/528; H05K3/40
技術(shù)領(lǐng)域
conductor,traces,trace,signal,handling,or,pcb,system,mils,conductors
地域: TX TX Round Rock

摘要

A method may include receiving a first and a second complementary signal to provide differential signaling. The method may further include providing a first conductor trace to transport the first complementary signal; providing a second conductor trace to transport the second complementary signal, the second conductor trace immediately adjacent to the first conductor trace; providing a third conductor trace to transport the first complementary signal, the third conductor trace immediately adjacent to the second conductor trace; and providing a fourth conductor trace to transport the second complementary signal, the fourth conductor trace immediately adjacent to the third conductor trace.

說(shuō)明書(shū)

FIGS. 4a, 4b, 4c, and 4d show techniques for distributing two differential signal conductors to the replicated traces shown at FIGS. 2b and 3b. Today, most integrated circuits, chipsets, hubs, and the like, that provide an interface using differential signaling, generates a single complementary signal pair. Therefore, some means to distribute the two signals to corresponding replicated conductor traces is required. In the future, this particular requirement may be eliminated by dedicating individual interface pins for each of the discreet replicated signals. FIG. 4a shows a perspective view of a PCB including ball grid array (BGA) terminals 410 and 412 that provide a differential signal interface from an integrated circuit package to a printed circuit board. Conductor trace 411 electrically couples a first complementary differential signal (indicated by a “+” sign) from BGA terminal 410 to a PCB via 420. Vias 424 further propagate the first signal to traces 230, 232, and 234 a lower layer of the PCB. Conductor trace 413 electrically couples a second complementary differential signal (indicated by a “?” sign) from BGA terminal 412 to a PCB via 422, which distributes the second signal to traces 231, 233, and 235 at the same layer of the PCB as traces 230, 232, and 234.

權(quán)利要求

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