Monolithic Power Systems Inc. EVCS1802-S-05-00A

Overview

EVCS1802-S-05-00A from Monolithic Power Systems is an evaluation board for the MCS180XGS-05 linear Hall-effect current sensor, supporting ±5 A primary current sensing at 3.3 V supply, with 264 mV/A typical sensitivity, differential Hall array for stray-field rejection, and galvanic isolation between IP+ / IP− and signal pins.

For engineers reviewing the EVCS1802-S-05-00A datasheet, EVCS1802-S-05-00A pinout, EVCS1802-S-05-00A application, or EVCS1802-S-05-00A equivalent, this board enables rapid validation of isolated DC/AC current measurement in motor control, power supply monitoring, and over-current protection circuits using a calibrated SOIC-8 Hall sensor with 100 kHz bandwidth and 4 µs rise time.

Technical Context

The EVCS1802-S-05-00A implements the MCS180XGS-05 sensor in a fixed-gain, single-supply configuration with VCC = 3.3 V, optimized for ±5 A full-scale current range and delivering VOUT = 1.65 V ± 1.32 V (0.5 × VCC ± Sens × IP). The board uses a differential Hall array to suppress external magnetic interference and integrates 0.9 mΩ internal conductor resistance for minimal insertion loss.

Galvanic isolation is achieved via the SOIC-8 package's creepage/clearance design, enabling replacement of optocouplers in safety-critical current feedback paths. C4 (unpopulated footprint) allows bandwidth tuning down from the native 100 kHz maximum, while JP1/JP2 provide screw-terminal access to IP+ and IP− for high-current injection.

Key Specifications

Availability

EVCS1802-S-05-00A is available at Aetrix Electronics and suitable for motor control development, switch-mode power supply current monitoring, and over-current fault protection prototyping requiring stable component supply and validated reference design support.

Supply support for EVCS1802-S-05-00A includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Monolithic Power Systems (MPS) is a fabless semiconductor company specializing in high-performance power management ICs, including DC/DC converters, LED drivers, and precision analog sensors.

The MCS180X product line delivers isolated, linear Hall-effect current sensing for industrial and automotive applications where accuracy, bandwidth, and magnetic immunity are critical-designed specifically to replace bulky or aging isolation technologies.

FAQ

What current range does the EVCS1802-S-05-00A support?

This evaluation board is configured for the MCS180XGS-05 sensor, providing ±5 A full-scale primary current measurement with 264 mV/A sensitivity and 1.65 V quiescent output at 3.3 V supply. It is not reconfigurable for other ranges without hardware modification.

Does the board include the current sensor IC?

Yes - U1 on the board is the MCS180XGS-05 in SOIC-8 package, pre-mounted and fully assembled per the BOM. No additional sensor placement or soldering is required for basic operation.

How is galvanic isolation implemented on this board?

Isolation is inherent to the MCS180XGS-05 IC's SOIC-8 package structure, which separates the high-side primary conductor (IP+/IP− pins) from the low-voltage signal side (VOUT, VCC, GND, FILT) by ≥3.7 mm creepage and ≥3.2 mm clearance, meeting reinforced insulation requirements.

Can I adjust the bandwidth?

Yes - the C4 footprint (unpopulated) accepts an external capacitor to reduce bandwidth below the default 100 kHz; larger capacitance lowers cutoff frequency per the sensor's internal transimpedance amplifier response.

What terminals are provided for primary current connection?

Two 4-pin screw terminals (Keystone 8191K-ND), labeled IP+ and IP−, accept up to 12 AWG wire and support secure, low-resistance connection to the primary current path with mechanical strain relief.

Is the board RoHS-compliant and lead-free?

Yes - all components, including the MCS180XGS-05 sensor and passive parts, are lead-free and halogen-free, conforming to the EU RoHS Directive 2011/65/EU as confirmed by MPS product documentation and material declarations.