TLP155E(TPL,E) Isolators

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The TLP155E Gate Driver is an isolator designed to provide high-speed isolation between high-speed logic signals on the primary (transmitter) side of the isolator and logic signals on the secondary (receiver) side. The TLP155E isolator is designed to operate in the industrial, medical, commercial and military environments. It is ideal for applications such as motor control systems, rail signal, railway systems, power control systems, industrial control systems, distributed control systems, and communication systems.

The TLP155E Gate Driver is an opto-coupler that uses opto-absorptive technology to provide electrical isolation between the 38 Mbps output logic signal and the 5 Mbps input logic signal. The TLP155E isolated gate driver has an isolation voltage of 2500Vrms and is capable of driving both high-end and low-end fan-out loads to provide exceptional switching rates and digital isolation. The isolator operates in conjunction with a control pulse trigger signal, typically an enable signal, to switch the output logic signal on or off.

The TLP155E Gate Driver consists of a primary side optical isolator, a power regulating element, and a secondary side optical isolator. The primary side circuit contains a microcontroller, an opto-transistor, a frequency reference oscillator, and an IC that controls the wave shape of the output signal. The secondary side opto-coupler circuit contains the opto-transistor, the power regulating element, and the opto-coupler LED. The primary side opto-transistor sends an enable signal to the frequency reference oscillator which in turn sends a control pulse to the primary side opto-transistor. The control pulse activates the opto-transistor on the secondary side of the isolator, which switches the output logic signal on or off. The opto-coupler LED provides the power to the secondary side opto-transistor and the power regulating element on the secondary side is designed to output the correct power levels to meet the requirements of the logic components.

The TLP155E Gate Driver provides excellent isolation performance, with a high-speed switching and noise immunity capability, enabling it to be used in a variety of industrial, medical and communication applications that require both high-speed and high-precision isolation. The isolation voltage rating of 2500V ensures that data signals remain secure and separated from the primary and secondary sides without compromising system performance. The high-speed output switching, combined with the opto-coupling, minimizes the effect of external noise sources on the signal transmission.

The TLP155E isolated gate driver is not suitable for applications requiring high speed switching, such as drives and converters. In addition, the isolator does not provide isolation for analog signals. However, the TLP155E isolated gate driver is an excellent choice for applications requiring isolation between logic signals on both the primary and secondary sides, as well as providing superior noise immunity and signal transmission between both sides.

In conclusion, the TLP155E Gate Driver is an excellent choice for applications requiring high-speed signal transmission and isolation between primary and secondary logic signals where both excellent speed and performance are necessary. With its high isolation voltage, fast switching speeds, and noise immunity, the TLP155E Gate Driver is an ideal solution for a variety of industrial, commercial, medical, and communication applications.

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