38 results about "Charged-device model" patented technology

The present invention provides a charged-device model (CDM) electrostatic discharge (ESD) protection circuit for an integrated circuit (IC). The ESD protection circuit comprises a substrate of first conductivity type; a MOS component of second conductivity type formed on a first well on the substrate, and coupled to a pad; an isolating well / region having the second conductivity type being formed between the first well and the substrate to separate the first well and the substrate. Additionally, the circuit comprises an ESD clamp coupled to the isolated well / region. Under normal power operation, the ESD clamp is open. During a CDM ESD event, the CDM charges accumulated in the substrate and the MOS component are removed by the ESD clamp to prevent damage to the IC.

A silicon-controlled rectifier apparatus, comprising a substrate upon which a low-voltage triggered silicon-controlled rectifier is configured. A plurality of triggering components (e.g., NMOS fingers) are formed upon the substrate and integrated with the low-voltage triggered silicon-controlled rectifier, wherein the plurality of triggering components are inserted into the low-voltage triggered silicon-controlled rectifier in order to permit the low-voltage triggered silicon-controlled rectifier to protect against electrostatic discharge during human-body model and charged-device model stress events.

A circuit for electrostatic discharge (ESD) protection is disclosed. The circuit includes multiple transistors that are selectively turned on during an ESD event. An ESD sense circuit detects an ESD event and asserts signals to activate an ESD protection circuit which closes multiple protection transistors to dissipate current during the ESD event. During normal operation of the circuit, the signals are de-asserted, disabling the ESD protection circuit.

An interface circuit for controlling a cross-domain signal link between a first circuit domain and a second circuit domain in a circuit may include first and second controllers, each of the first and second controllers including a first input coupled to a first voltage source of the first circuit domain and a second input coupled to a second voltage source of the second circuit domain. The interface circuit may further include a first switch controlled by an output of the first controller, the first switch including a first end coupled to the cross-domain signal link and a second end coupled to a first defined voltage state, and a second switch controlled by an output of the second controller, the second switch including a first end coupled to the cross-domain signal link and a second end coupled to a second defined voltage state, in which during a power-up of the circuit, if one of the first and second voltage sources is unavailable, at least one of the first and second controllers generates a control signal to engage at least one of the first and second switches and pull the cross-domain signal link to one of the first and second defined voltage states, while providing cross-domain protection against field-induced charge device model (FICDM) stress conditions at small drivers and receiver inputs connected to the signal interface link.

The invention discloses an in-tool ESD events monitoring method and apparatus. In one embodiment of the invention, an apparatus for electrostatic discharges (ESD) events monitoring incorporating a charged device model event simulator (CDMES) unit comprises: at least one antenna positioned in a process area; an ESD detector coupled to said at least one antenna; said ESD detector wirelessly coupledto said CDMES unit; and said ESD detector calibrated for different discharge energies generated by said CDMES unit.