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HF500-15 - Flyback Regulator

General Description

The HF500-15 is a fixed-frequency, currentmode regulator with built-in slope compensation.

It combines 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.

Key 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 compensation 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 Adapt.

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Full PDF Text Transcription for HF500-15 (Reference)

Note: Below is a high-fidelity text extraction (approx. 800 characters) for HF500-15. For precise diagrams, and layout, please refer to the original PDF.

HF500-15 Fixed Frequency Multi-Mode Flyback Regulator Integrated with Highly Rugged MOSFET DESCRIPTION The HF500-15 is a fixed-frequency, currentmode regulator with built...

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ON The HF500-15 is a fixed-frequency, currentmode regulator with built-in slope compensation. It combines 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 fOSC(min) to offer excellent efficiency at light load. At very light loads, the regulator enters burst mode to achieve

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