The EVX2002-44018A-00A evaluation board is a 120W, 2C1A adapter designed to demonstrate the capabilities of the MP44018A and MPX2002.

The MP44018A is a critical conduction mode (CrM)/discontinuous conduction mode (DCM), multi-mode power factor correction (PFC) controller that provides simple and high-performance active PFC using minimal external components. The switching frequency (f_SW) is reduced by dead time (DT) extension technology under light-load conditions, which improves light-load efficiency. The MP44018A also achieves reduced total harmonic distortion (THD) due to variable-on-time control in DCM compared to conventional constant-on-time (COT) control.

The MPX2002 is an all-in-one flyback controller with an integrated primary driving circuit, secondary controller, synchronous rectification driver, and safety-compliant feedback. The device offers the benefits of both primary-side regulation (PSR) and secondary-side regulation (SSR). A feedback circuit is not required, as a synchronous rectifier (SR) can be matched with the driving signal of the primary-side MOSFET. The SR can operate safely in continuous conduction mode (CCM), which increases the overall efficiency and design flexibility.

The MPX2002 adopts novel quasi-resonant (QR) mode switching when it runs in DCM. Due to this feature, the power supply has improved efficiency. Under very light loads, the controller enters burst mode to achieve very low standby power consumption. The MPX2002 offers frequency jittering to help dissipate the energy generated by conducted noise.

The EVX2002-44018A-00A evaluation board provides a detailed reference design. This datasheet contains the complete specification of the power supply, a detailed circuit diagram, the entire bill of materials required to build the power supply, a drawing of the transformers, and performance testing.