HCPL-7720-360E

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Optoisolators are Optoelectronic components used to provide electrical isolation between two parts of a circuit. They provide galvanic isolation with a solid-state device, which helps reduce fault current and protect downstream components from overvoltage. One of the more popular types of optoisolators is the HCPL-7720-360E, which provides logic output raw isolation up to 10 kV/μs. By using an AC or DC photocoupling technology, it also eliminates the need for conventional external bipolar power supplies that can produce high-crosstalk and interference.

The HCPL-7720-360E can be used in a variety of applications including reliable isolation in computers, factory automation, consumer devices, and industrial motor drives. Its main purpose is to provide a galvanic isolation barrier between a system’s logic circuitry and the external system environment. In this way, the Circuitry within the system is isolated from voltage spikes that may occur in the outside world. In addition, the HCPL-7720-360E also provides noise immunity which makes it a great choice for applications with sensitive signals.

For its working principle, the HCPL-7720-360E utilizes an AC or DC photocoupling technology. The primary side of the device consists of a photodiode which is activated by an external voltage. This excites the photodiode which produces an electrical current. This current travels into the secondary side of the device which contains a light emitting diode or LED. After the LED fully lights up, it produces a voltage which can then be used to power external circuits.

Reliability is also a strong feature of the HCPL-7720-360E. With its high-temperature phosphor (HTP) coating, the device can handle extreme temperatures up to +140°C without “burn-in” or thermal aging. Additionally, the device is equipped with an open-collector ground lead for accurate electrical connection to the circuit’s ground, eliminating the possibility of ground-loop problems. Additionally, it also features surge and ESD protection which prevents any shocks from damaging the device.

Overall, HCPL-7720-360E is an extremely useful optoisolator and logic isolation module which offers an efficient and reliable solution for a wide range of applications. It offers electrical isolation up to 10 kV/μs, an open-collector ground lead for electrically connection, surge and ESD protection, and can handle extreme temperatures up to +140°C. With its various features, it is an ideal choice for applications where high-voltage isolation is necessary.

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