MP44019 CrM/DCM Multi-Mode PFC Controller with Second OVP DESCRIPTION FEATURES The MP44019 is a CrM/DCM multi-mode PFC Valley Turn On for Minimum Switching Loss controller that provides simple and high- Frequency Reduction to Reduce Switching performance active power factor correction Loss Under Light-Load Conditions using minimal external components. Low Supply Current in Burst Mode Soft-On/Off Burst for Low Audible Noise The device features a very low supply current. Mains Compensation This allows the device to achieve low standby Improved THD power loss. The typical no load power loss is Under-Voltage Protection (UVP) below 50mW. Over-Current Limit (OCL) The MP44019 reduces the switching frequency Over-Current Protection (OCP) using dead time extension technology under light Over-Voltage Protection (OVP) loads. This improves light-load efficiency. Second Over-Voltage Protection (OVP2) The device achieves lower total harmonic Brown-In (BI) and Brownout (BO) distortion (THD) due to variable on time control Over-Temperature Protection (OTP) in discontinuous conduction mode (DCM), when Open/Short Pin Protection compared to conventional constant on time Soft Start-Up (COT) control. Enhanced Dynamic Response Multi-protection functionality largely enhances Available in an SOIC-8 Package the safety and reliability of the system. The APPLICATIONS MP44019 feature over-voltage protection (OVP), second OVP (OVP2), an over-current limit (OCL), LCD and OLED TVs over-current protection (OCP), under-voltage Desktop PCs and Servers protection (UVP), brown-in (BI) and brownout High-Power Supplies for Lighting (BO), VCC under-voltage lockout (UVLO), and AC/DC Adapters, Open-Frame SMPSs over-temperature protection (OTP). Video Game Consoles The MP44019 is available in an SOIC-8 package. All MPS parts are lead-free, halogen-free, and adhere to the RoHS directive. For MPS green status, please visit the MPS website under Quality Assurance. MPS, the MPS logo, and Simple, Easy Solutions are trademarks of Monolithic Power Systems, Inc. or its subsidiaries. MP44019 Rev. 1.0 MonolithicPower.com 1 4/30/2021 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2021 MPS. All Rights Reserved. MP44019 CRM/DCM MULTI-MODE PFC CONTROLLER WITH SECOND OVP TYPICAL APPLICATION D1 L1 V OUT R R OV1 O1 R IN1 R ZCD BD1 V CC U1 F1 OVP2 R FB G C1 C Q1 O GATE VCC M44019 C x 1 ZCD/CS MAINSIN R OV2 R O2 COMP GND R4 C VCC NC R Z R R CS IN2 C P C Z MP44019 Rev. 1.0 MonolithicPower.com 2 4/30/2021 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2021 MPS. All Rights Reserved.