Quad-Channel Digital Isolators with Integrated DC to DC Converter

Description

The NSiP884x(NSiP8840/NSiP8841/NSiP8842/NSiP8843/NSiP8844) devices are quad-channel digital isolators with integrated features designed to simplify system design and enhance reliability in various applications. Here’s a breakdown of the key features and specifications of these devices:

1. Quad-Channel Digital Isolators: These devices provide four independent isolation channels, allowing for the isolation of digital signals or data between different parts of a system.
2. Integrated Isolated DC-DC Converter: The NSiP884x devices include an integrated isolated DC-DC converter. This converter can provide up to 500mW of output power and utilizes an on-chip transformer for this purpose. It’s a convenient feature for supplying power to isolated components in the system.
3. Isolation Technology: The feedback PWM signal is transmitted to the primary side using a digital isolator based on Novosense capacity isolation technology. This technology helps maintain signal integrity and isolation between the primary and secondary sides.
4. Safety Certification: The NSiP884x device is safety certified by UL1577, which means it meets specific safety standards. It supports a withstand voltage of 4.5kVrms, ensuring a high level of electrical isolation.
5. Electromagnetic Immunity and Emissions: These devices offer high electromagnetic immunity, making them resilient to external electromagnetic interference. They also emit low levels of electromagnetic radiation, which is essential for sensitive electronic systems.
6. Data Rate: The data rate of the NSiP884x is up to 150Mbps, making it suitable for applications that require relatively high-speed data transmission.
7. Common-Mode Transient Immunity (CMTI): The devices have a high common-mode transient immunity of up to 150kV/us. This feature helps protect against common-mode voltage spikes and disturbances.
8. Voltage Conversion Modes: The NSiP884x devices support multiple voltage conversion modes, including 5V to 5V, 5V to 3.3V, and 3.3V to 3.3V conversion modes. The output voltage can be configured using the SEL (select) pin.
9. I/O Voltage Level Flexibility: The logical level of digital isolators on the left side can be set by the VDDL (Voltage Digital Data Link) pin. This feature is useful when the supply voltage and I/O voltage levels need to be different, allowing for greater compatibility in mixed-voltage systems.

In summary, the NSiP884x devices are versatile quad-channel digital isolators with integrated features such as an isolated DC-DC converter, advanced isolation technology, safety certification, high-speed data transmission, and voltage conversion flexibility. These features make them suitable for a wide range of applications where electrical isolation and signal integrity are critical.