Introduction
Futurewafer's NVCS TVS series Transient Voltage Suppressor (TVS) Diodes feature avalanche and fast recovery characteristics. The clamping ratio between breakdown voltage and maximum clamping voltage is very low. This low clamping ratio provides lower clamping voltage at higher peak pulse currents compared to traditional TVS , allowing designers to use capacitors.
The operating voltage is low , and the switching components include polarity protection diodes, load switch MOSFETs, Voltage stabilizing IC etc.
In addition, NVCS TVS have a very stable breakdown voltage over a wide operating range of -55°C to +150°C. stable.
NVCS TVS operating characteristics enable POE and industry standard testing and rigorous operation of circuit network power state.
This article explains NVCS TVS , describes its advantages over traditional TVS, and outlines typical applications.Futurewafer has released four IDEAL voltage-resistant 58V high-power TVS including 1KW, 3KW, 5KW and 7KW.
The conventional surge suppressor diode application circuit needs to consider alternating current and direct current lines, so a bidirectional and unidirectional diode is developed. Therefore, when using in a circuit system , special attention should be paid to the directivity of AC and DC. Therefore, the selection and installation of electronic components in the circuit is troublesome.
In view of the above problems , the present invention provides a surge suppression diode, which has a clamping voltage (Volts Clamp, VC) of the diode of the present invention smaller than a breakdown voltage (Volts Breakdown, VB) by a new diode structure. In order to avoid the electronic components burned due to excessive voltage, and can be applied to any AC and DC line , reducing the choice of the type of surge suppressor.

Characteristics of NVCS TVS
>> Unique rebound characteristics of NVCS TVS
The fast recovery characteristics of NVCS TVS differ from conventional TVS in terms of breakdown and clamping operation.
The I-V curves of traditional bidirectional TVS and NVCS TVS are shown in Figure 1.
The fast recovery operation of NVCS is initiated (triggered) by a small reverse leakage current at a specific voltage and avalanche operates with a sufficient voltage applied between the cathode and anode.
The clamping voltage is lower than the initial breakdown voltage and a higher maximum value can be obtained. Peak pulse current capability ratio traditional TVS.

Advantages of NVCS TVS
NVCS TVS can provide the following advantages to help designers of cost-effective circuits utilizing lower VDS MOSFETs and lower working voltage capacitors without TVS applied. In addition , the devices characteristics translate into an accurate and high reliability protection solution.
     ● Low clamping ratio at a wide range of peak pulse currents at the clamping voltage
     ● Low clamping voltage at high transient current
     ● Stable breakdown voltage over wide operating temperature ranges
     ● High clamping peak pulse current capability in the same packages

Roadmap of NVCS TVS
Currently , NVCS are only available with a 58 V stand-off voltage . In the near future , Futurewafer will be extending the series with stand-off voltages up from 24 V to 58 V and various package options for safety applications.