JIUYOU Primary Agent Current Sensor JYM49186

The JYM49186 series is a high-precision open-loop Hall effect current sensing IC from JIUYOU (JiuYou Microelectronics), combining high accuracy, high bandwidth, fast response, high linearity, and low temperature drift. Offering multiple range options from ±50A to ±200A, it provides a new solution for high-accuracy, high-performance current sensing applications.

The chip integrates a built-in magnetic core package, with primary conductor to sensing circuit isolation rated at 4.8kV, making it suitable for high-electromagnetic interference (EMI) and high-isolation current sensing environments. Based on open-loop Hall effect principle, it effectively measures both AC and DC currents and is widely used in industrial, consumer, and telecommunications equipment. The JYM49186 series achieves a typical sensitivity drift of only ±0.2% across the full temperature range, ensuring measurement stability over wide temperature variations.

The integrated dynamic offset cancellation circuit ensures that sensor sensitivity is不受 external mechanical stress and IC package stress的影响. The entire series is available in PFF/PSF/PSS packages, RoHS compliant, and serves as an ideal replacement for traditional current transformers.

Ordering Information / Product Family

Key Advantages

• ● High Current & High Accuracy: Supports 0~200A high-current sensing with total output error ±1%

• ● Excellent Temperature Drift Performance: Zero-point drift ±5mV, sensitivity drift ±0.2% (full temperature range)

• ● High Linearity: Linearity error ±0.2%, ensuring highly linear output proportional to sensed current

• ● High Bandwidth & Fast Response: 250kHz bandwidth with 1.5μs response time for high-frequency transient measurements

• ● Robust Isolation & Noise Immunity: 4.8kV isolation withstand voltage with built-in magnetic core rejecting stray magnetic fields

• ● Wide Temperature Operation: Options for -40~150°C (50A), -40~125°C (100A), and -40~85°C (150A/200A)

• ● Multiple Package Options: PFF/PSF/PSS available for different assembly requirements

• ● AC/DC Compatible: Simultaneously supports both AC and DC current sensing

Key Electrical Specifications (Typical Values)

Pin Configuration & Functions

The JYM49186 series is available in PFF, PSF, and PSS package options. All three packages share the same pin functions; the primary differences lie in lead frame dimensions and thermal performance. Key pin functions are as follows:

Internal Functional Block Diagram

The chip integrates a Hall sensing element, differential amplifier, filter, output driver, and dynamic offset cancellation circuitry. The magnetic field generated by the primary current is sensed by the Hall element, then amplified and filtered to produce an analog voltage output proportional to the current. The integrated magnetic core effectively rejects external stray magnetic field interference.

Typical Application Circuit

The application circuit is straightforward: the high current to be measured flows from the IP+ pin to the IP- pin (with extremely low internal on-resistance, voltage drop is negligible); VCC is powered by 3.3V or 5V; the OUT pin outputs an analog voltage proportional to the current; the VREF pin is used for reference voltage setting. The integrated magnetic core and signal conditioning circuitry eliminate the need for external magnetic shielding or complex signal conditioning.

With 250kHz bandwidth and 1.5μs fast response time, the device can accurately capture transient current changes, making it suitable for various variable frequency drives, inverters, and motor control applications.

Applications

• ● Photovoltaic Inverters & Industrial Drives Current Sensing

• ● Motor Controller Phase Current Sensing (Servo, Stepper, BLDC)

• ● Current Transformer Replacement

• ● UPS & Switch Mode Power Supply Current Monitoring

• ● Overcurrent Protection Devices & Smart Circuit Breakers

• ● EV Charging Stations & Welding Machines Current Sensing

• ● Battery Load Detection Systems

Functional Description

1. Operating Principle

Based on the open-loop Hall effect principle, the current flowing through the primary conductor generates a magnetic field in the magnetic core proportional to the current. The Hall element converts this magnetic field into a voltage signal, which is then amplified and filtered for output.

2. Sensitivity & Range

Available in ±50A, ±100A, ±150A, and ±200A ranges, with different sensitivity levels for each range (see Ordering Information table). Users can select the appropriate model based on their actual current measurement requirements.

3. Isolation & Insulation

Primary-to-secondary isolation withstand voltage of 4.8kV meets industrial safety standards.

4. Temperature Compensation

Built-in temperature compensation circuitry ensures sensitivity drift ≤ ±0.2% and zero-point drift ≤ ±5mV across the full temperature range.

5. Dynamic Offset Cancellation

Eliminates the effects of external mechanical stress and package stress, ensuring long-term stability.

6. Output Modes

Bidirectional ("B" suffix, zero point = VCC×0.5) and unidirectional ("U" suffix, zero point = VCC×0.1) options available.

Product Selection Comparison Table (Typical Models)

Product Advantages

Compared to traditional current transformers, the JYM49186 series offers significant advantages:

• ● Compact & Lightweight: Multiple compact package options save PCB space

• ● High Bandwidth & Fast Response: 250kHz bandwidth with 1.5μs response time for high-frequency transient current measurement

• ● High Accuracy & Low Drift: Stable measurements across full temperature range

• ● Robust Isolation: 4.8kV isolation withstand voltage ensures safety and reliability

• ● AC/DC Measurement: Simultaneously supports both AC and DC current sensing

• ● Cost-Effective: Stable supply with competitive pricing, ideal for import replacement

The JYM49186 series is the ideal choice for high-current, high-accuracy, fast-response, and high-reliability current sensing applications.

Brand & Distribution Services

JIUYOU (Xi'an) Microelectronics Co., Ltd. is a high-tech enterprise integrating R&D, manufacturing, and sales. As a developer and manufacturer of Hall effect magnetic sensing ICs, the company holds proprietary intellectual property for Hall linear circuits, Hall switches, magnetic sensors, and more. JIUYOU leverages advanced CMOS, BICMOS, BIPOLAR, and BCD process technologies in its product development.

GSMicro Semiconductor (Shenzhen) Co., Ltd. is an authorized distributor of JIUYOU Microelectronics, specializing in high-precision magnetic sensing ICs and signal chain solutions. We offer the full JYM49186 series Hall effect current sensors, Hall switches, linear Hall sensors, and more. We provide high-reliability magnetic sensing products and technical services for industrial control, new energy, automotive electronics, and other sectors. With warehouses in Shenzhen, Shanghai, and Beijing, we offer fast shipping to customers nationwide and worldwide.