Monolithic Power Systems Inc. EV6005-K-00A

Overview

EV6005-K-00A from Monolithic Power Systems is an evaluation board designed to demonstrate the MP6005 high-efficiency flyback/forward controller IC, supporting both primary-side regulation (PSR) flyback and secondary-side regulation (SSR) active-clamped forward topologies. It delivers 12 V output at up to 2.5 A from a 36–57 V input, features frequency dithering for EMI reduction, 2 A gate drive, and operates in MSOP10 package with hiccup-mode protection.

For engineers reviewing the EV6005-K-00A datasheet, EV6005-K-00A pinout, EV6005-K-00A application, or EV6005-K-00A equivalent, this board enables rapid validation of PSR-based isolated power designs for security cameras, video telephones, wireless APs, and industrial power supplies - with emphasis on opto-coupler-free implementation, load/line regulation performance, and thermal behavior under 2.1 A continuous operation.

Technical Context

The EV6005-K-00A implements the MP6005 controller in a fully assembled, tested flyback reference design operating at 250 kHz fixed switching frequency. It uses third-winding sensing for PSR output regulation and includes auxiliary winding supply (VCC) to eliminate external bias rails.

Board-level features include output diode compensation in PSR mode, 160 mV current-sense threshold, SYNC driver support for active-clamped forward, and hiccup-mode protection for over-load, short-circuit, over-voltage, and thermal events - all validated across 36 V, 48 V, and 57 V input conditions.

Key Specifications

Availability

EV6005-K-00A is available at Aetrix Electronics and suitable for security camera power design, video telephone isolation, wireless access point auxiliary supply, and industrial isolated DC-DC conversion requiring stable component supply and fast prototyping turnaround.

Supply support for EV6005-K-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 focus on energy-efficient DC-DC conversion, motor drivers, and LED lighting solutions.

The MP6005 product line targets cost-sensitive, space-constrained isolated power applications - specifically enabling opto-coupler-free PSR flyback and high-efficiency SSR active-clamped forward topologies in security, telecom, and industrial edge devices.

FAQ

What is the maximum recommended continuous output current for reliable thermal operation?

The EV6005-K-00A board is rated for 2.5 A peak output, but sustained operation above 2.1 A causes elevated board temperature due to PCB size limitations. For continuous duty at ambient temperatures ≤50°C, 2.1 A is the validated thermal limit with no forced airflow.

Can this board be configured for secondary-side regulation (SSR) mode?

Yes - the MP6005 IC on this board supports SSR operation via its SYNC driver output. To enable SSR active-clamped forward, external circuitry must be added per the MP6005 datasheet, including a synchronous rectifier gate driver and clamp capacitor; the default configuration is PSR flyback.

Does the board include output voltage adjustment capability?

No - the output voltage is fixed at 12 V by resistor divider R11 (280 kΩ) and internal MP6005 reference. Adjusting V_OUT requires modifying the feedback network per MP6005's FB pin specification and recalibrating third-winding turns ratio.

What is the purpose of the 6.8 kΩ resistor (R6) on the board?

R6 sets frequency dithering depth for EMI reduction. Lowering R6 below 1.3 kΩ disables output diode compensation and improves switching stability at the cost of degraded load regulation - as documented in the board's Rev. 1.1 schematic notes.

Is the MP6005GK IC on this board RoHS-compliant and halogen-free?

Yes - the MP6005GK used on EV6005-K-00A is lead-free, halogen-free, and fully compliant with the EU RoHS directive. MPS confirms green status for this part on its official Quality Assurance webpage.

How is primary-side regulation achieved without an opto-coupler?

The MP6005 senses reflected voltage on the transformer's third winding during demagnetization, deriving output voltage information directly from primary-side waveforms. This eliminates opto-isolator latency, cost, and reliability concerns while maintaining ±1% regulation accuracy.