Monolithic Power Systems Inc. EVCS1806-S-3-10-00A

Overview

EVCS1806-S-3-10-00A from Monolithic Power Systems is a 2-layer evaluation board for the MCS1806GS-3-10 current sensor IC, featuring 3kVRMS galvanic isolation, ±10A primary current range, 132mV/A typical sensitivity, and 3.3V supply compatibility. It enables rapid validation of isolated DC/AC current sensing in motor drives and power converters.

For engineers reviewing the EVCS1806-S-3-10-00A datasheet, EVCS1806-S-3-10-00A pinout, EVCS1806-S-3-10-00A application, or EVCS1806-S-3-10-00A equivalent, this board provides direct access to VOUT, IP+, IP−, VCC, GND, and FILT terminals for real-time output voltage measurement, bandwidth tuning via C4, and primary conductor current injection under controlled lab conditions.

Technical Context

The EVCS1806-S-3-10-00A implements a differential Hall array architecture that rejects stray magnetic fields while measuring bidirectional current through its integrated primary conductor path. Its SOIC-8-mounted MCS1806GS-3-10 IC delivers ratiometric analog output (VOUT = 0.5 × VCC + Sens × IP) with <2.5% total accuracy across ±10A full scale.

Board-level design includes 0.1μF decoupling (C1), 4.7μF bulk capacitance (C2), screw-terminal primary connections (IP+/IP−), and optional C4 filtering to adjust bandwidth and suppress output ripple noise-enabling trade-offs between response speed and signal fidelity during prototyping.

Key Specifications

Availability

EVCS1806-S-3-10-00A is available at Aetrix Electronics and suitable for motor control validation, industrial power supply monitoring, and battery management system prototyping requiring stable component supply and traceable evaluation hardware.

Supply support for EVCS1806-S-3-10-00A 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 MCS1806GS series targets isolated current sensing in space-constrained, high-reliability applications such as servo drives, UPS systems, and solar inverters-emphasizing accuracy, magnetic immunity, and ease of integration without external shunts or optocouplers.

FAQ

What is the purpose of the FILT pin on the EVCS1806-S-3-10-00A?

The FILT pin connects to capacitor C4 to configure the sensor's bandwidth. Adding capacitance here reduces output voltage ripple noise at the expense of slower transient response-enabling optimization for either high-fidelity steady-state measurement or fast current event capture in dynamic systems.

Can the EVCS1806-S-3-10-00A be used with a 5V supply?

No. The EVCS1806-S-3-10-00A is configured for 3.3V operation only, matching the MCS1806GS-3-10 IC variant. Using 5V would exceed the IC's absolute maximum VCC rating and risk permanent damage. For 5V systems, use EVCS1806-S-5-10-00A instead.

How is primary current injected into the board?

Primary current flows through the dedicated screw terminals labeled IP+ and IP−, which connect directly to the internal conductive path of the MCS1806GS-3-10 IC. This path carries the measured current and remains galvanically isolated from the low-voltage sensor circuitry.

What does "±10A" mean for the primary current rating?

±10A indicates the full-scale bidirectional measurement range: the sensor outputs a linear voltage from 0.5×VCC −1.32V (at −10A) to 0.5×VCC +1.32V (at +10A) with <2.5% total error, supporting both charging and discharging current detection in battery or motor applications.

Is the board RoHS-compliant and lead-free?

Yes. All components-including the MPS MCS1806GS-3-10 IC, Murata capacitors (GRM188R71C104KA01D, GCM21BR71C475KA73L), and Keystone screw terminals-are RoHS-compliant and lead-free, consistent with MPS's standard manufacturing practices and documented in the official bill of materials.

Does the board include calibration data or factory-trimmed offsets?

No. The EVCS1806-S-3-10-00A is an uncalibrated evaluation platform. Offset and gain errors must be characterized during user testing. The MCS1806GS-3-10 IC itself has factory-trimmed sensitivity and zero-current offset, but board-level parasitics and layout effects require system-level calibration for highest accuracy.