ایزولاتور ایزولاتور- درایور گیت

Product Attributes

Introduction

CA-IS3417WT is a low-EMI, optocoupler-compatible enhanced isolation high-voltage solid-state relay. The primary input stage features an analog e-diode that maintains optocoupler input characteristics while offering improved consistency, long-term stability, and higher reliability. Unlike traditional photo-MOS relays, its transmission characteristics do not degrade over time due to optical aging. Compared to conventional mechanical relays, the CA-IS3417WT also provides a higher switching cycle count and longer service life.

The secondary side of the CA-IS3417WT integrates back-to-back SiC MOSFETs rated up to 1700V. The superior high-temperature performance and reliability of SiC MOSFETs enable the device to operate stably at elevated ambient temperatures.

When a forward voltage is applied to the input diode and the input forward current IF exceeds the turn-on threshold IFT, the primary circuit operates normally, modulating the high-level input signal through the transmitter (TX) across the isolation barrier to the secondary side. The receiver (RX) on the secondary side demodulates the signal and converts it into the supply voltage and control signals required by the output driver stage, ultimately turning on the back-to-back SiC MOSFETs. When the input forward current IF falls below the turn-off threshold IFC, the transmitter ceases signal modulation; with no energy or signal source available, the receiver on the secondary side causes the output driver to maintain a low level, turning off the back-to-back SiC MOSFETs. In summary, the secondary side of the CA-IS3417WT requires no external power supply — simply applying an input forward current IF exceeding a specified threshold to the primary side is sufficient to drive the output switch into conduction. The CA-IS3417WT also incorporates optimized design for signal modulation/demodulation and energy transfer, ensuring EMI compliance with the CISPR32 Class B standard on a two-layer PCB.

The CA-IS3417WT is available in a 12-pin wide-body SOIC package with a pinout compatible with mainstream photo-MOS relays. The isolation voltage between the primary and secondary sides reaches up to 5kVRMS @ 1 minute, with support for operation across the rated extended industrial temperature range of -40°C to 125°C.

Features

• Normally-open device (output off when input is de-energized)
• Optocoupler-compatible input with analog optocoupler input characteristics: no optical degradation aging, maximum reverse input voltage 5.5V
• Integrated back-to-back SiC MOSFETs: output blocking voltage up to 1700V (minimum), output off-state leakage current as low as 1μA (maximum), output on-resistance 50Ω (typical), supports output on-state current up to 50mA, turn-on and turn-off time less than 300μs
• Excellent isolation performance (certification in progress): UL 1577 compliant, 5kV RMS isolation withstand voltage for 1 minute, 7070Vₚₖ V₁₀ₜₘ and 2121Vₚₖ Vₗ₀ᵣₘ per DIN EN IEC 60747-17 (VDE 0884-17)
• 12-pin wide-body SOIC package

Applications

• Solid State Relay
• Battery Management System
• Energy Storage System
• Solar Energy
• New Energy Vehicle Charging Device