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High Speed, Reinforced/Basic Isolated Window Comparator
NSI22C12 is a high-speed isolated comparator with output separated from input based on the NOVOSENSE capacitive isolation technology Adaptive OOK®. The NSI22C12 is an isolated window comparator with open-drain output and latch enable function. The short response time of NSI22C12 makes it highly suitable for over-voltage or over-current protection application. The high common-mode transient immunity ensures that the device is able to provide accurate protection even in the presence of high-power switching such as in motor control applications.NSI22C12 have an adjustable input reference threshold of 20mV~320mV and the window threshold is from ±20mV to ±320mV. The reference can be set by an external voltage source or the 100μA internal current source flowing through an external resistor. The fail-safe function (missing VDD1 detection) simplifies system-level design and diagnostics.
Product Features
Up to 5000Vrms Insulation Voltage
3.1V to 27V wide input side power supply
Adjustable input reference threshold: ±20mV to ±320mV
Analog input voltage range: ±0.4V
Internal threshold reference: 100μA ±1.5% error (Max)
Accurate trigger threshold: ±1% error (Max)
Fast propagation time: 250ns (Max)
High CMTI: 150kV/μs (Typ)
System-Level Diagnostic Features: VDD1 monitoring
Operation Temperature: -40°C~125°C
RoHS-Compliant Packages: SOW8 wide body (SOP8 300mil)
Safety Certificate
UL recognition: 5000Vrms for 1 minute per UL1577
CQC certification per GB4943.1-2011
CSA component notice 5A
DIN EN IEC 60747-17 (VDE 0884-17)
Application
AC motor controls
Power and solar inverters
Uninterruptible Power Suppliers
DC/DC converters
Functional Block Diagram
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