A Novel ESD Super-Clamp Structure for TVS Applications

This whitepaper presents a new ESD clamp structure for Transient Voltage Suppressor (TVS) applications that combine the advantages of avalanche diode and bipolar transistor clamps. The device structure consists of a non-snapback avalanche diode triggered vertical NPN transistor. The avalanche diode provides the fast trigger and current conduction path at low currents, while the vertical NPN bipolar transistor turn-on provides an alternate low resistance path for current conduction at high currents.

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