Universal High Power BIB
Publication Date: 2014-Jan-20
The IP.com Prior Art Database
Disclosed is a method to reduce the cost impact of high power burn-in tooling design changes by segmenting the burn-in board design and hardware into two pieces. The first segment changes along with product changes. The second segment is a universal and reusable board section that allows a portion of the hardware to remain independent of product changes.
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Universal High Power BIB
Present high power burn-in tooling utilizes completely custom personalization hardware for each product/package/chip. Each time a new package or chip design is introduced, a new burn-in board is required. The need for new hardware is related to package, package pin out, and power distribution changes within the product chip designs and package designs. Board quantities are dictated by burn-in times, chip power, and volumes. Costs associated with the customized board aspect of high power burn-in have increased as device under test (DUT) Burn-in powers have increased.
One solution is to define standard packaging that allows the reuse of the custom interface hardware. This method is not always a practical solution due to the constraints imposed on both end user systems and constraints on designs. In most cases and in most market segments, chips, packages, and systems are redesigned for each technology generation to provide maximum performance and to advantage scaling.
The novel contribution to the current solution is a method to segment the burn-in board (BIB) design and hardware into two pieces. This reduces the cost impact of design.
The first segment of the BIB is smaller and much less costly than DUT customization boards. This segment changes along with product changes. The second segment is a universal and reusable board section that allows a portion of the hardware to remain independent of product changes. Interconnections from the tester to the DUT are provided with various pluggable and removable electrical connections. Cost advantages are represented by the need to only update the smaller and less expensive DUT customization portions.
Example Embodiment: BIB used for a high-end server processor (including modifications to a current design)
Figure 1: Example BIB Design
1. BIB design consists of a noseboard and four custom DUT cards
2. Noseboard and DUT cards attach to a large backing plate
3. Backing plate provides a means of alignment for the DUT cards, support un...