سنسور و مبدل سنسور جریان

Product Attributes

Introduction

The CC6920B device is a high - performance current sensor based on Hall Effect. The device provides precise and economical solutions for AC or DC current sensing in industrial, commercial and communication equipment. It is provided in a small, surface mount SOP8 package with current sensing range of 2.5A/5A/10A/20A/25A/30A/40A/50A. Customers can easily complete their PCB design and implementation. The CC6920B device consists of a precise, low - offset, linear Hall circuit with a copper conduction path located near the surface of the die. When current flows through the copper conduction path, a magnetic field generates. Meanwhiles the Hall circuit converts this magnetic signal to output voltage signal. Internal copper conductor’s resistance is typical 0.9mΩ, which provides much less power loss than the universal resistor sampling method. Otherwise, its internal inherent insulation provides 424VRMS basic working isolation voltage and 3500VRMS insulation withstand voltage between the input current path and the secondary circuit. The Hall circuit based on BiCOMS process integrates a high sensitivity Hall element, oscillator, Hall signal pre - amplifier, patented temperature compensation circuit, dynamic offset cancellation circuit, sensitivity trimming circuit and output amplifier. Zero current output voltage is 50%VCC. When power supply voltage is 3.3V, the linear output voltage range is 0.2 ~ 4.8V, the linearity can reach 0.1%. It’s operating ambient temperature range is - 40 - 125℃. Comply with RoHS requirements.

Features

• Zero current output voltage is 50%VCC
• Current sensing range available: 2.5A/5A/10A/20A/25A/30A/40A/50A
• High isolation and withstand voltage (3500VRMS isolation voltage between pins 1 - 4 and 5 - 8)
• Less power loss, internal conductor’s resistance is 0.9mΩ
• High bandwidth, up to 250kHz
• 1.2μs output rise time in response to step input current
• Total output error ±0.5% at Ta = 25℃ and ±3% at Ta = - 40 - 125℃
• Patented temperature compensation
• Outputs desensitized to mechanical stress
• Differential Hall structure, strong resistance to external magnetic interference
• ESD (HBM) 4000V
• Operating ambient temperature: - 40 - 125℃

Applications

• Motor controller
• Load detection and management
• Switch - mode power supplies
• Over - current fault protection
• Other applications requiring current detection