TVS Diodes APPLICATION NOTE
2021-05-26
● Green and sustainable technologies require high performance and low power electronics that operate at low voltages. Interfacing sensitive components like sensors, microcontrollers, data converters etc. to the real world, or connecting them to other circuits like inductive loads can expose them to voltage surges higher than their specified maximum limits. In order to avoid permanent damage, caused by voltage transients, designers must take protection measures that isolate the active circuit from such events while not affecting operation during normal conditions. Diotec's portfolio of Transient Voltage Suppressors (TVS) offers a wide variety of solutions for a broad range of applications.
● TVS Diodes are silicon devices designed to protect against voltage surges greater than a desired maximum level. When connected in parallel to the circuit, they create a protective path around it (Fig. 1, Fig. 2). During normal conditions, when the input voltage stays within the desired limits, the TVS diode exhibits a high impedance, thus not affecting the behaviour of the downstream circuitry. As soon as the maximum voltage level is reached, the avalanche effect kicks in and the TVS Diode creates a low impedance path, thus diverting all excessive energy into the ground. Like this, the circuit remains unharmed and normal operation can continue.
● TVS Diodes are silicon devices designed to protect against voltage surges greater than a desired maximum level. When connected in parallel to the circuit, they create a protective path around it (Fig. 1, Fig. 2). During normal conditions, when the input voltage stays within the desired limits, the TVS diode exhibits a high impedance, thus not affecting the behaviour of the downstream circuitry. As soon as the maximum voltage level is reached, the avalanche effect kicks in and the TVS Diode creates a low impedance path, thus diverting all excessive energy into the ground. Like this, the circuit remains unharmed and normal operation can continue.
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