HF500-40 Fixed-Frequency, Flyback Regulator with Multi-Mode Control and Over-Power Line Compensation DESCRIPTION FEATURES The HF500-40 is a fixed-frequency, current- 700V/1 Integrated MOSFET mode regulator with built-in slope compensation. Fixed-Frequency, Current-Mode Control The HF500-40 combines a 700V MOSFET and Operation with Built-In Slope Compensation a full-featured controller into one chip for a low- Frequency Foldback Down to 25kHz at power, offline, flyback, switch-mode power Light Load supply. Burst Mode for Low Standby Power Consumption At medium and heavy loads, the regulator Frequency Jittering for a Reduced EMI works in a fixed frequency with frequency Signature jittering. Jittering helps reduce EMI energy on Over-Power Compensation the switching frequency and its harmonics. Internal High-Voltage Current Source During light-load condition, the regulator freezes the peak current and reduces its VCC Under-Voltage Lockout (UVLO) with switching frequency to 25kHz to offer excellent Hysteresis efficiency. At very light loads, the regulator Programmable Input B/O and Over-Voltage enters burst mode to achieve low standby Protection (OVP) power consumption. VCC Over-Voltage Protection (OVP) Overload Protection (OLP) with Full protection features include brown-in and Programmable Delay brown-out, VCC under-voltage lockout (UVLO), Latch-Off Protection on TIMER overload protection (OLP), short-circuit Over-Temperature Protection (OTP) (Auto- protection (SCP), input over-voltage protection Restart with Hysteresis) (OVP), VCC over-voltage protection (OVP), and Short-Circuit Protection (SCP) over-temperature protection (OTP). Programmable Soft Start (SS) The HF500-40 features over-power line Available in a PDIP8-7B Package compensation to ensure that the overload protection point is independent of the input APPLICATIONS voltage. Power Supplies for Home Appliances The HF500-40 is available in a PDIP8-7B Set-Top Boxes package. Standby and Auxiliary Power (1) Adapters Maximum Output Power All MPS parts are lead-free, halogen-free, and adhere to the RoHS 230VAC 15% 85VAC ~ 265VAC directive. For MPS green status, please visit the MPS website under Open Open (2) (2) Quality Assurance. MPS, the MPS logo, and Simple, Easy Solutions are Adapter Adapter (3) (3) trademarks of Monolithic Power Systems, Inc. or its subsidiaries. Frame Frame POUT 30 45 25 35 (W) NOTES: 1) The junction temperature can limit the maximum output power. 2) Maximum continuous power in a non-ventilated enclosed adapter measured at 50C ambient temperature. 3) Maximum continuous power in an open-frame design at 50C ambient temperature. HF500-40 Rev.1.01 www.MonolithicPower.com 1 8/7/2019 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2019 MPS. All Rights Reserved. VBUS HF500-40 FULL-FEATURED FLYBACK REGULATOR TYPICAL APPLICATION T1 Output V BUS Input 85 ~ 265Vac SOURCE 5 4 DRAIN GND 6 B/O VCC 7 2 FB TIMER 1 8 HF500-40 Rev.1.01 www.MonolithicPower.com 2 8/7/2019 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2019 MPS. All Rights Reserved.