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Osmond PCB Home ITead Intelligent Systems Blog | Just another WordPress site Better PCBs in Eagle Skill Level: Intermediate by Nate | November 06, 2008 | 42 comments Designing a Better PCB: We are constantly pushing ourselves for better printed circuit boards (PCB). We’ve messed up piles of PCBs over the years. Important Files: SparkFun Eagle Rules for designing PCBs in Eagle. Trace Width and Spacing: Just because a fab house can handle down to 5mil traces and 6mil space doesn’t mean you should design with those sizes. PIC32 development board Even complex boards with tight pitch packages and a horrible rat’s nest of traces can be routed with 10mil traces and 8mil spacing. Isolate: A ground (or power) plane is a good idea on some projects. What the?! A simple board with 10mil isolation We recommend you increase the default 10mil isolation in Eagle of a polygon pour to ‘0.012’ or 12mil. Increased isolation good, ground plane break may be bad. To increase the isolation on an existing polygon, click on the ‘i’ button for information, then click on the border of the polygon. many people to fail.

Digital Power Control Solutions - Digital Power Control Driver - UCD7100 The UCD7100 is a member of the UCD7K family of digital control compatible drivers for applications utilizing digital control techniques or applications requiring fast local peak current limit protection. The UCD7100 is a low-side ±4-A high-current MOSFET gate driver. It allows the digital power controllers such as UCD9110 or UCD9501 to interface to the power stage in single ended topologies. It provides a cycle-by-cycle current limit function with programmable threshold and a digital output current limit flag which can be monitored by the host controller. With a fast 25-ns cycle-by-cycle current limit protection, the driver can turn off the power stage in the unlikely event that the digital system can not respond to a failure situation in time. For fast switching speeds, the UCD7100 output stage uses the TrueDrive™ output architecture, which delivers rated current of ±4 A into the gate of a MOSFET during the Miller plateau region of the switching transition.

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