Monolithic Power Systems Inc. EVCS1802-S-10-00A

Overview

EVCS1802-S-10-00A from Monolithic Power Systems is an evaluation board for the MCS180XGS-10 linear Hall-effect current sensor, supporting ±10 A primary current sensing at 3.3 V supply, with 132 mV/A typical sensitivity, 100 kHz bandwidth, and galvanic isolation between IP+ / IP− and signal pins.

For engineers reviewing the EVCS1802-S-10-00A datasheet, EVCS1802-S-10-00A pinout, EVCS1802-S-10-00A application, or EVCS1802-S-10-00A equivalent, this board enables rapid validation of isolated DC/AC current measurement in motor control, SMPS, over-current protection, and load management circuits using the MCS180XGS-10 sensor IC.

Technical Context

The EVCS1802-S-10-00A implements a differential Hall array architecture to reject external magnetic interference, paired with an SOIC-8 packaged MCS180XGS-10 sensor that delivers ratiometric analog output (VOUT = 0.5 × VCC + Sens × IP) across ±10 A range. It supports dual supply options (3.3 V or 5 V), though this variant is optimized for 3.3 V operation.

Board-level design includes dedicated screw terminals (IP+, IP−), decoupling capacitors (C1: 0.1 µF, C2: 4.7 µF), and configurable filter capacitor C4 to adjust bandwidth-larger C4 reduces bandwidth below 100 kHz. The 0.9 mΩ internal conductor resistance minimizes power loss during high-current measurement.

Key Specifications

Availability

EVCS1802-S-10-00A is available at Aetrix Electronics and suitable for motor control validation, switch-mode power supply current monitoring, and over-current fault protection prototyping requiring stable component supply and traceable evaluation hardware.

Supply support for EVCS1802-S-10-00A 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 EVCS1802-S-10-00A belongs to MPS's current sensor evaluation platform family, designed specifically to accelerate development of isolated, high-accuracy current sensing solutions for industrial, automotive, and computing applications.

FAQ

What is the primary current rating and supply voltage for this evaluation board?

This board is configured for ±10 A primary current sensing and operates at 3.3 V nominal supply voltage, matching the MCS180XGS-10 sensor's optimized performance point. It does not support 5 V operation in this specific variant, as confirmed by the "EVCS1802-S-10-00A" part number designation and associated BOM.

How is galvanic isolation achieved on the EVCS1802-S-10-00A board?

Isolation is implemented via the MCS180XGS-10 SOIC-8 IC itself, which integrates a monolithic Hall sensor with internal isolation barrier between the primary conductor (IP+, IP−) and secondary signal pins (VOUT, GND, VCC). No external isolators or optocouplers are required-the isolation rating is inherent to the sensor die.

Can I adjust the bandwidth of the current measurement?

Yes. Bandwidth is controlled by capacitor C4 (unpopulated footprint on board). Installing a larger ceramic capacitor at C4 lowers the sensor's effective bandwidth below the default 100 kHz; omitting C4 maintains maximum bandwidth. This allows trade-off between noise rejection and transient response.

What are the key interface connections needed to operate this board?

Four essential connections are required: VCC (3.3 V), GND, IP+ and IP− (for primary current path), and VOUT (analog output). Screw terminals JP1 and JP2 provide secure, low-inductance access to IP+ and IP−; VOUT is accessible via test pad or header pin.

Does this board include calibration or trimming components?

No. The EVCS1802-S-10-00A is a direct-interface evaluation platform without onboard calibration resistors or trimmers. Accuracy relies entirely on the factory-trimmed MCS180XGS-10 IC, whose sensitivity (132 mV/A) and offset are pre-characterized and temperature-compensated per datasheet specifications.

Is the board RoHS-compliant and lead-free?

Yes. All components-including the MCS180XGS-10 IC, Murata capacitors (GRM188R71C104KA01D, GCM21BR71C475KA73L), and Keystone screw terminals-are RoHS-compliant, halogen-free, and lead-free, consistent with MPS's green manufacturing policy and documented in their Quality Assurance resources.