company blog about TI AMC-AMP-200A-EVM AMC3302 200A Isolated Current Sensing Evaluation Module

TI AMC-AMP-200A-EVM AMC3302 200A Isolated Current Sensing Evaluation Module

Shenzhen Mingjiada Electronics Co., Ltd. is a professional distributor of electronic components, offering the AMC-AMP-200A-EVM 200A isolated current sense evaluation module from stock. This module is specifically optimised for current measurement applications based on shunt resistors.

AMC-AMP-200A-EVM Overview

The AMC-AMP-200A-EVM is an isolated current sensing evaluation module specifically designed to address these challenges. It ingeniously integrates a high-performance isolated amplifier with precision shunt resistors within a user-friendly platform.

At the core of the AMC-AMP-200A-EVM module lies TI's AMC3302 isolated amplifier. This amplifier is specifically optimised for shunt resistor-based current measurement applications.

The AMC3302 incorporates a complete isolated DC/DC converter internally. This design eliminates the complexity of providing a separate power supply for the high-voltage side, resulting in a more streamlined system design.

Paired with the AMC-AMP-200A-EVM module is the Vishay™ WSBS8518 bus shunt resistor, featuring a resistance value of just 250μΩ. This low-resistance design minimises power dissipation and self-heating effects while maintaining sufficient signal levels for precise amplifier measurement.

AMC-AMP-200A-EVM Features

±200A isolated current sensing

250μΩ bus shunt resistor

Terminal block connection compatibility

Thermal design capable of withstanding 180°C for two minutes

Test points for ease of evaluation

Differential-to-single-ended signal chain conversion

AMC-AMP-200A-EVM Technical Specifications and Performance Highlights

This AMC-AMP-200A-EVM evaluation module delivers outstanding technical parameters, making it an ideal choice for diverse industrial applications:

High-Precision Measurement: The module performs current sensing with typical accuracy within ±5%. Whilst this figure may appear unremarkable, it is achieved across a full-scale current range of ±200A whilst maintaining complete electrical isolation.

Wide-Range Current Detection: Supporting peak currents up to ±200A, it accommodates most high-power applications.

Enhanced Safety Isolation: The module provides electrical isolation via the AMC3302's isolation barrier. The AMC3302 itself holds multiple international safety certifications, including 6000V reinforced isolation compliant with DIN VDE V 0884-11 and 4250V RMS isolation certified to UL1577.

Efficient thermal design: Employing via-stacking technology, the module dissipates heat effectively under high-current conditions, ensuring stable long-term operation.

Extended operating temperature: Supports an industrial-grade range from -40°C to +125°C, accommodating diverse demanding environments.

System integration convenience: Provides test points for rapid evaluation and converts differential signals to single-ended signal chains, simplifying system integration.

Technical Depth of Core Component AMC3302

To grasp the true value of the AMC-AMP-200A-EVM module, one must delve into the exceptional performance of its core component, the AMC3302 isolated amplifier:

Integrated DC/DC Converter: The AMC3302 incorporates an isolated DC/DC converter, enabling operation from a single supply. This innovative design streamlines system architecture, reducing external component count and PCB footprint.

Precision Input Characteristics: The amplifier offers a ±50mV input voltage range with a fixed gain of 41, specifically optimised for connection to low-impedance shunt resistors. This design enables precise measurement of minute voltage drops across shunt resistors.

Exceptional DC Accuracy:

Offset Voltage: ±50μV (maximum)

Temperature drift: ±0.5μV/°C (maximum)

Gain error: ±0.2% (maximum)

Gain error drift: ±35ppm/°C (maximum)

Non-linearity: ±0.03% (maximum)

High common-mode transient immunity: Achieves 95kV/µs, ensuring stable operation in high-noise environments.

System-level diagnostics: Integrated diagnostic functions enable rapid fault detection, simplifying system-level design and maintenance.

AMC-AMP-200A-EVM Practical Application Scenarios

This AMC-AMP-200A-EVM evaluation module demonstrates unique value across multiple critical domains, effectively addressing practical challenges faced by engineers:

Within motor drive systems, precise motor current control is essential for efficient operation and overload protection. The AMC-AMP-200A-EVM safely measures high currents within drive circuits while providing complete electrical isolation from low-voltage control circuits.

Solar inverters require accurate monitoring of both DC-side and AC-side currents. The AMC-AMP-200A-EVM's high precision and isolation characteristics make it an ideal choice for current monitoring in photovoltaic systems, particularly where high common-mode voltages are present.

Industrial and server power supplies demand precise current detection for power management, load balancing, and fault protection. The AMC-AMP-200A-EVM module's accuracy and reliability make it suitable for these applications requiring exceptional stability.

In electric vehicle charging systems, the safe and precise measurement of high currents is paramount. The AMC-AMP-200A-EVM's high isolation voltage and accuracy characteristics fulfil the dual requirements of safety and performance for such applications.

For protective relays and power monitoring equipment, accurate fault current detection is essential in high-voltage environments. The AMC-AMP-200A-EVM's isolation capability and high precision make it suitable for these critical safety applications.