USB interface protection ICs

28 September 2011 Circuit & System Protection

Diodes Incorporated has introduced a new device that delivers enhanced robustness and advanced protection for the USB (Universal Serial Bus) interface in a multitude of applications, where heavy capacitive loads and short circuits could occur when connecting devices via the USB port.

Fully compliant with USB 2.0 and 3.0 standards, the new AP2337 is a single-channel, 1 A high-side power switch optimised for both self-powered and bus-powered applications, and other 3 V to 5 V ‘hot swapping’ applications, for example where peripherals or portable gadgets are connected to, and disconnected from, a desktop or laptop computer or another consumer device without requiring a system reboot.

Protection capabilities of the device include fast short circuit response time of 5 μs, preventing system shutdown and restart; built-in output discharge functionality; low on-resistance of 110 m over 1 A continuous load; reverse current blocking; and output over-voltage protection; all in the space-saving SOT23 package. The AP2337, which is UL recognised (pending) and IEC 60950-1 (CB scheme) certified, offers 3 kV HBM and 300 V MM electrostatic discharge protection.

Further reading:

EMI shielding materials application guide
Circuit & System Protection
TE Connectivity’s shielding solutions include electrically conductive elastomers, gaskets, knitted wire mesh, oriented wire, EMI shielding ventilation panels, shielded window, cable shielding and shielding components.

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Clearing the Static: ESD containers and packaging
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         Vacuum forming ESD Electronic components can be damaged by electrostatic discharges. To protect against such damage, electronic assembly parts are often transported or stored in vacuum formed component ...

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Electrostatic discharge chairs
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An ESD chair forms an integral part of grounding within the electrostatic discharge protected area to prevent potential damage to products.

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Conductive ESD footwear
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Conductive ESD footwear is used in conjunction with other grounding devices, such as a wrist strap, cord, and ESD surface mats, to provide a continuous path to ground.

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Clearing the Static: The importance of cleaning in ESD control
Actum Circuit & System Protection
To prevent Electrostatic Discharge (ESD) damage to sensitive electronic assemblies and components, all production, handling, packaging, and storage must take place in an ESD-protected environment.

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Clearing the Static: Staying grounded
Actum Circuit & System Protection
To maintain reliable electrostatic discharge control, regular testing and accurate measurement are essential, with grounding products and ESD testing equipment being vital.

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Smarter protection without disruption
NewElec Pretoria Circuit & System Protection
Designed for operations still running without integrated automation, NewElec’s retrofit-friendly systems let you upgrade performance and safety without overhauling your entire network.

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Circuit breaker for reliable, compliant protection
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Legrand’s low-voltage power distribution portfolio encompasses the DX3 range of miniature circuit breakers, designed to deliver dependable protection in residential, commercial and industrial installations.

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Reducing noise on power supply lines
Future Electronics Circuit & System Protection
Murata has introduced the EMIFIL ESD Series Noise Filters, a breakthrough solution engineered for superior noise suppression and enhanced electrostatic discharge (ESD) protection.

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Clearing the Static: Fundamental principles of static control
Actum Circuit & System Protection
Controlling electrostatic discharge in electronics manufacturing is essential with effective ESD programs built on six key principles.

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