HFC0500 Fixed Frequency Flyback Controller with Ultra-low No Load Power Consumption The Future of Analog IC Technology DESCRIPTION FEATURES Fixed-frequency current-mode control with HFC0500 is a fixed-frequency current-mode internal slope compensation controller with internal slope compensation. It is Frequency foldback down to 25kHz at light specifically designed for the medium-power, off- loads line, flyback, switch-mode power supplies. Burst mode for low standby power HFC0500 is a green-mode highly efficient consumption, meeting EuP Lot 6 controller. At light loads, the controller freezes the peak current and reduces its switching Frequency jitter to reduce EMI signature frequency down to 25kHz to offer excellent X-cap discharge function light-load efficiency. At very light loads, the Adjustable overpower compensation controller enters burst mode to achieve very low Internal high-voltage current source standby power consumption. VCC under-voltage lockout with hysteresis (UVLO) HFC0500 offers frequency jittering to help Brown-out protection on HV dissipate energy generated by conducted noise. Overload protection with programmable HFC0500 employs overpower compensation delay function to narrow the difference of over power Thermal shutdown (auto-restart with protection point between low line and high line. hysteresis) HFC0500 also has X-cap discharge function to Latch-off for external over-voltage protection discharge the X-cap when the input is (OVP) and over-temperature protection unplugged. This aids in lowering no load power. (OTP) on TIMER Latch-off for Vcc over voltage protection HFC0500 features multiple protections that Short-circuit protection include thermal shutdown (TSD), VCC under- Programmable soft start voltage lockout (UVLO), overload protection (OLP), over-voltage protection (OVP), and APPLICATIONS brown-out protection. AC/DC power for small and large HFC0500 is available in an SOIC8-7A package. appliances AC/DC adapters for notebook computers, tablets, and smart phones Offline battery chargers LCD TVs and monitors All MPS parts are lead-free, halogen free, and adhere to the RoHS directive. For MPS green status, please visit MPS website under Quality Assurance. MPS and The Future of Analog IC Technology are Registered Trademarks of Monolithic Power Systems, Inc. HFC0500 Rev. 1.1 www.MonolithicPower.com 1 5/10/2019 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2019 MPS. All Rights Reserved. HFC0500 FIXED-FREQUENCY FLYBACK CONTROLLER WITH ULTRA-LOW NO LOAD POWER CONSUMPTION TYPICAL APPLICATION T1 Output * * Input 85~ 265 Vac * HV TIMER 1 8 FB 2 VCC CS 3 6 DRV GND 4 5 HFC0500 HFC0500 Rev. 1.1 www.MonolithicPower.com 2 5/10/2019 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2019 MPS. All Rights Reserved.