Nanochip has released two new single-channel isolated gate drivers, NSi66x1A and NSi6601M, both of which are suitable for driving power transistors such as SiC, IGBT and MOSFET. Widely used in new energy vehicles, air conditioners, power supplies, photovoltaics and other application scenarios.
Product Features
● Super driving capability, can provide a maximum 10A source and sink current capability, support rail-to-rail output and split output
● Perfect protection functions: DESAT short-circuit protection, fault soft shutdown, Maitreya clamp, under-voltage protection; when short-circuit fault or under-voltage occurs, it can also be fed back through a separate pin report
● Both input and output terminals use dual-capacitor reinforced isolation technology, plus Nanochip Micro Adaptive OOK coding technology, the minimum common mode transient immunity (CMTI) is as high as 150kV/μs, which improves the robustness of the system
● The maximum power supply voltage VCC2 on the driver side is 32V, and the VCC1 on the input side is powered by a power supply voltage ranging from 3V to 5.5V; both VCC1 and VCC2 have under-voltage protection (UVLO)
● Very low transmission delay, as low as 80ns
● NSi6611 supports ASC feature, which can force the output to be high in emergency
● Working environment temperature: -40℃ ~ 125℃
● RoHS Compliant Package Type: SOW16
NSi66x1A super driving ability, effectively saving peripheral circuits
In high-power applications, users generally choose high-power tubes such as IGBT and SiC, so the Qg of the power tube will also be larger, and the requirements for the product's driving current capability have become higher.
The NSi66x1A can provide a maximum current capacity of 10A. Compared with the traditional solution, it can directly drive high-power tubes without an additional buffer circuit. It saves the cost of the Buffer circuit and the volume of the PCB, and at the same time does not require additional circuits for matching, which increases the stability of the system. In addition, the NSi66x1A integrates Maitreya clamps, supports separate outputs, is easy to use, has fewer peripheral devices, and highlights the cost-effectiveness.
NSi6611A supports ASC function
What is ASC?
ASC is Active short circuit (ASC for short), which is a safety protection mechanism for the motor system. arm short).
NSi6611A supports the ASC function, which can make the motor consume current by three-phase short circuit when the motor is in high speed, or suddenly brake and other abnormality occurs, and reduce the back EMF generated by the motor, so that it does not exceed the voltage provided by the high-voltage battery. The bus voltage ensures that the power battery, bus capacitors and other high-voltage devices are not damaged, thereby protecting the motor and electrical system.
NSi6611A pin1 pin is the ASC function. As can be seen from the ASC timing diagram below, even when the input is low or VCC1 is under-voltage, when the pin1 level is high, the ASC function will be enabled, and the OUT will force the output to be high to turn on the power. Tube. Of course, if the user does not need the ASC function, the NSi6611A pin1 can be left floating, or pulled down to GND2.
