سنسور و مبدل سنسور جریان

Product Attributes

Introduction

The MagnTek MT9522 product family is a fully integrated, Hall-effect-based isolated linear current sensor IC designed for AC or DC current sensing in industrial, commercial, and communications systems. Each MT9522 consists of a precision, low-offset linear Hall circuit with a built-in low insertion resistance current conductor path. The applied current flowing through this low-resistance current conductor path generates a magnetic field, which the IC converts into a voltage output proportional to the input current. To effectively suppress external common-mode magnetic fields, a differential current sensing technique is employed, improving accuracy in magnetically noisy environments. Chip accuracy is further enhanced by optimizing the magnetic signal-to-noise ratio. The low-offset, chopper-stabilized Hall IC based on CMOS process provides an accurate proportional voltage that is precisely calibrated during manufacturing. When the applied current flows through the internal current conduction path (from pins 1, 2, 3, and 4 to pins 5, 6, 7, and 8), the device output has a positive slope (>VOQ). The typical internal resistance of this conduction path is 0.75mΩ, enabling low power dissipation. The terminals of the conduction path (pins 1 through 8) are electrically isolated from the signal lines (pins 9 through 16). This allows the MT9522 current sensor IC to be used in high-side current sensing applications without the need for additional costly isolation techniques. The MT9522 series is offered to customers in a SOP-16W package, which is RoHS compliant.

Features

• AEC-Q100 compliant, typical linearity ±0.3% over full temperature range
• Fast output step response time: 2.2μs (typical)
• 250kHz signal bandwidth
• 5.0V/3.3V DC supply voltage
• 2 output modes: ratiometric output proportional to supply; fixed output independent of supply
• Operating temperature: -40℃~150℃
• Internal conductor resistance: 0.75mΩ
• Current sensing range (bidirectional or unidirectional): ±20A, ±30A, ±40A, ±50A, ±65A, ±80A, ±100A; +40A, +50A
• AC and DC current signal sensing
• Highly stable quiescent output voltage
• On-chip fault output with flexible external fault threshold setting
• On-chip reference output with near-zero magnetic hysteresis
• Safety certification: (UL62368 CU72227126 01)
• Isolation voltage: 4.8kVrms 1min
• Working voltage: 1097Vrms, 1550VDC or VPK
• Clearance: 8.2mm
• Creepage distance: 8.2mm
• Package: SOP-16W
• RoHS compliant: (EU)2015/863

Applications

• Current sensing for medium/low-power inverters
• Motor phase and rail current sensing
• String PV inverter current sensing
• MPPT current sensing
• On-board charger DC-DC converter
• DC power supply overcurrent protection
• Uninterruptible Power Supply (UPS)