HF500-15 Datasheet | Monolithic Power Systems

Fixed Frequency Multi-Mode Flyback Regulator Integrated with Highly Rugged MOSFET DESCRIPTION The HF500-15 is a fixed-frequency, currentmode regulator with built-in slope pensation. It bines a 700V MOSFET of high avalanche ruggedness and a full-featured controller into one chip for a low-power, offline, flyback, switch-mode power supply. At medium and heavy loads, the regulator works in a fixed frequency with frequency jittering, which helps to spread energy out in a conducted mode. During a light-load condition, the regulator freezes the peak current and reduces its switching frequency to f OSC(min) to offer excellent efficiency at light load. At very light loads, the regulator enters burst mode to achieve low standby power consumption. Full protection Features include thermal shutdown, brown-in and brownout, VCC undervoltage lockout (UVLO), overload protection (OLP), short-circuit protection (SCP), input and output over-voltage protection (OVP), and overtemperature protection (OTP) . The HF500-15 Features timer-based fault detection and over-power pensation to ensure that the overload is independent of the input voltage. The HF500-15 is available in a SOIC8-7B package. Maximum Output Power3 230Vac±15% 85Vac~265Vac Adapter1 Open Frame2 Adapter1 Open Frame2 POUT (W) 12 Notes: 1. Maximum continuous power in a non-ventilated enclosed adapter measured at 50℃ ambient temperature. 2. Maximum continuous power in an open frame design at 50℃ ambient temperature. 3. The junction temperature can limit the maximum output power. Features - 700V/4.5 Integrated MOSFET with high single pulse avalanche energy - Fixed-Frequency Current-Mode-Control Operation with Built-In Slope pensation - Frequency Foldback Down to f OSC(min) at Light Load - Burst Mode for Low Standby Power Consumption - Frequency Jittering for a Reduced EMI Signature - Over-Power pensation - Internal High-Voltage Current Source - VCC Under-Voltage Lockout (UVLO)...