Open-loop Current Sensor - AH951

AH951 is an open-loop current sensor module based on the Hall effect principle, providing a more economical and precise solution for AC or DC detection. It is widely used in industrial, commercial, and communication systems for AC or DC current detection. This product can be used in motor control, load detection and management, power supplies and DC-DC converters, photovoltaic inverters, UPS, overcurrent protection, and current detection in low and medium power inverters.

This product consists of a high-precision, low-noise, low-temperature-drift linear Hall IC, a magnetic core, and a low insertion resistance (0.15mΩ) current conductor path (located near the mold surface). The applied current flowing through this conductor path generates a magnetic field, which the chip converts into a voltage signal output proportional to the input current.

All pins are tin-plated, the packaging material is lead-free and RoHS compliant, the operating temperature range is -40°C to 105°C, and the power supply voltage range is 4.5 to 5.5V.

I.Open-loop Current Sensor -Features of AH951:

Operating Voltage: 4.5V ~ 5.5V
Single Power Supply
Output Voltage 2.5V or 50% VCC
Physical Isolation Between Input and Output
Operating Temperature: -40°C ~ 105°C
Rated Current Detection Range: ±10A, ±16A, ±20A, ±32A, ±40A, ±50A
Product Comes with Reference Output: 2.5V
Safety certifications: UL508:2010
- Dielectric Strength: 4800Vrms 1min
- Isolation Working Voltage: 680Vrms, VDC or VPK,
- Clearance: 8.3mm
- Creepage Distance: 8.3mm
RoHS Compliant: (EU) 2015/863

II.Open-loop Current Sensor -Applications of AH951:

Current detection in low and medium power inverters

Combiner boxes, switching power supplies

Overload protection devices

Chargers, converters

Photovoltaic inverters

Uninterruptible Power Supplies (UPS)