Tuesday, September 27, 2022
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USB4 ESD Machine Affords Safety Alongside With Efficiency


PESD2V8Y1BSF and PESD4V0Y1BCSF from Nexperia are Electrostatic Discharge (ESD) safety units optimized to be used with retimers and redrivers on high-speed information traces. Retimers and redrivers are generally used within the design of high-speed USB4 interfaces. Nevertheless, these end in shorter board traces which have a decrease parasitic inductance, an unintended consequence of which is a discount within the total system-level ESD robustness. The PESD2V8Y1BSF is designed to guard USB4 (Thunderbolt) interfaces, whereas, PESD4V0Y1BCSF can shield each the USB4 in addition to the HDMI 2.1 interface. The part employs Nexperia’s TrEOS know-how, which mixes low clamping with low capacitance and excessive robustness. Each the units provide a backward compatibility

In accordance with the corporate, the PESD2V8Y1BSF and PESD4V0Y1BCSF will be positioned instantly subsequent to the system which is to be protected, this permits the units to supply larger design flexibility in comparison with most different ESD safety units, furthermore, the AC coupling capacitance is protected as nicely. On prime, it locations a lot of the line inductance between ESD safety and guarded system to optimize system ESD efficiency.

“Nexperia allows design engineers to satisfy tight budgets on each insertion and return loss for prime velocity USB4 information traces by offering units that decrease the affect of ESD safety on total system finances,” says Stefan Seider, senior product supervisor at Nexperia. “These units provide the optimum steadiness between optimizing system-level ESD robustness and RF efficiency.”

The corporate claims that to be able to keep backward compatibility with older interface requirements like USB3.2, which will be linked over USB Sort-C, the PESD2V8Y1BSF has a reverse standoff voltage, VRWM = 2.8 V, whereas the PESD4V0Y1BCSF has a VRWM = 4 V making it appropriate for HDMI 2.1 as nicely. The RF efficiency of the TrEOS know-how used for each units doesn’t degrade over the working voltage vary. Aside from USB4 and HDMI 2.1, each elements will also be used to guard PCIe or DisplayPort interfaces.




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