MAX14930FASE+

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Digital Isolators are utilized to provide electrical signal isolation between two devices, such as the controller and the motor. By using isolators, power supply and processor can be isolated from potentially hazardous electric fields generated by lines such as motors, transformer, and other applications. The MAX14930FASE+ is one of the popular digital isolators used in many applications. This article will explore the application field and working principle of the MAX14930FASE+.

Application Field of MAX14930FASE+

The MAX14930FASE+ is a high-performance, ultra-low-power 3 V digital isolator with fast switching capability at speeds up to 1 MHz. It is an ideal choice for applications that require wide-bandwidth operation and low power consumption, including motor control, industrial and automotive applications. Its features include a wide operating temperature range from -40 °C to +105 °C, operating voltage from 2.4 V to 5.5 V, optical coupling, a two-channel full bridge (FASE+) isolation design, and a 2.2 kVrms isolation breakdown voltage.

The MAX14930FASE+ is used for three-phase motor control, automotive applications, and other industrial analog- and digital-signal applications. It is used to provide electrical isolation in power converters, AC or DC drives, and battery isolation systems. Additionally, it can be used in motor drive systems, automotive infotainment systems, and robotics applications. Its integrated power supply eliminates the need for an external power supply and reduces component count and design complexity.

Working Principle of MAX14930FASE+

The MAX14930FASE+ utilizes a low-power optical isolation technique for digital signal isolation between two devices. It features a unique, two-channel full bridge (FASE+) design, which utilizes a single optical coupler to provide both channels of isolation. The primary signal passes through a photodiode in the first channel and an output buffer, and a photodiode in the second channel and an input buffer.

The two channels operate in conjunction with each other providing signal isolation and reducing power consumption in applications requiring multiple channels. The FASE+ design offers faster isolation than traditional half bridge designs and requires significantly less power. The MAX14930FASE+ has a maximum operating frequency of 1 MHz and is capable of supporting data rates up to 200 Mbps.

The MAX14930FASE+ utilizes a two-channel full bridge design, which utilizes a single optical coupler to provide both channels of isolation. This isolator utilizes capacitive isolation technology and an alerting signal indicating the presence of a voltage on the isolated side of the isolator. The capacitive isolation technique prevents capacitive coupling which can interfere with signals and degrade overall system performance.

In summary, the MAX14930FASE+ is a high-performance, ultra-low-power 3 V digital isolator featuring fast switching capability up to 1 MHz. It is an ideal choice for applications requiring wide bandwidth and low power consumption, including motor control and industrial and automotive applications. It utilizes a two-channel full bridge (FASE+) design that utilizes a single optical coupler to provide both channels of isolation, offering faster isolation than traditional half bridge designs and reducing power consumption. Additionally, it utilizes capacitive isolation technology and an alerting signal indicating the presence of a voltage on the isolated side of the isolator.

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