Monolithic Power Systems Inc. EV100L-N-00A

Overview

EV100L-N-00A from Monolithic Power Systems is an evaluation board for the MP100L offline inductor-less AC/DC regulator IC, designed to generate a regulated 12 VDC @ 20 mA output directly from 85–265 VAC input without external inductors. It implements smart AC-line-sampling control, provides power-good signaling, and integrates thermal shutdown, overvoltage, short-circuit, and overload protection.

For engineers reviewing the EV100L-N-00A datasheet, EV100L-N-00A pinout, EV100L-N-00A application, or EV100L-N-00A equivalent, this board enables rapid validation of MP100L-based bias supply designs for Z-Wave/ZigBee home automation devices, wall switches, dimmers, and low-power standby rails requiring <100 mW no-load consumption.

Technical Context

The EV100L-N-00A implements a capacitive-drop-free, inductor-less topology using the MP100L SOIC8E IC, which samples AC line voltage via internal high-voltage circuitry and regulates output using feedback-controlled charge-pump-like energy transfer. It operates without transformers or inductors, relying on precision resistor-divider (R1/R2) configuration for output voltage adjustment from 1.5 V to 15 V.

Board-level design includes MB6S bridge rectifier, 220 µF/35 V bulk capacitor (C1), 4.7 µF/16 V output capacitor (C2), 470 pF EMI filter (C3), 220 nF X-capacitor (CX1), 20 Ω fuse resistor (RF), and 275 VAC varistor (RV). Output regulation is verified at 12 V/20 mA with ≤60 °C temperature rise under open-frame conditions.

Key Specifications

Availability

EV100L-N-00A is available at Aetrix Electronics and suitable for Z-Wave device development, smart wall switch prototyping, and low-power standby supply validation requiring stable component supply, repeatable test conditions, and documented reference performance.

Supply support for EV100L-N-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 analog and power ICs, with core expertise in DC/DC converters, LED drivers, motor drivers, and AC/DC solutions.

The MP100L product line delivers inductor-less offline regulators targeting ultra-low-BOM-cost, space-constrained, and low-noise bias supplies for IoT edge nodes and smart home controls where transformerless operation is mandatory.

FAQ

What is the primary function of the EV100L-N-00A evaluation board?

The EV100L-N-00A is a fully assembled reference design board that demonstrates the MP100L inductor-less AC/DC regulator IC. It converts 85–265 VAC directly to a regulated 12 VDC output at up to 20 mA, enabling rapid validation of transformerless bias supply topologies for smart home and industrial control applications.

Can the output voltage be adjusted, and how?

Yes. The output voltage is set by the resistor divider network formed by R1 (90.9 kΩ) and R2 (10.2 kΩ) on the board, yielding 12 V by default. The formula VOUT = 1.235 V × (1 + R1/R2) allows adjustment from 1.5 V to 15 V by changing R1 and/or R2 values while maintaining stability and load regulation.

Does the board include safety-certified components?

Yes. The board incorporates a 275 VAC-rated varistor (TVR10431KSY), 220 nF X-capacitor (PX24K3IC59L270D9R) compliant with IEC 60384-14, and a 20 Ω/1 W fuse resistor (1WSJT-52-20R), all selected to meet basic insulation and transient suppression requirements for Class II AC-connected equipment.

What protections are implemented on the EV100L-N-00A board?

The board inherits all MP100L IC-level protections: thermal shutdown (TSD), VD overvoltage protection (OVP), VD-to-GND short protection, overload protection (OLP), and short-circuit protection (SCP). No additional discrete protection circuitry is required due to full integration within the MP100L SOIC8E package.

Is the EV100L-N-00A RoHS-compliant and lead-free?

Yes. All components on the EV100L-N-00A board, including the MP100LGN IC, MB6S diode, and passive elements, are lead-free and comply with the EU RoHS Directive 2011/65/EU. MPS confirms green status for this part family on its official Quality Assurance portal.

How is EMI performance validated on this board?

EMI performance was measured per CISPR-22 Class B standards using the configured board (VOUT = 12 V, IOUT = 20 mA, TA = 25 °C) in an open-frame setup. The design achieves "excellent EMI" through optimized PCB layout, integrated X-cap filtering (CX1), and controlled switching edge rates inherent to the MP100L's smart-control architecture.