SY50223FAC

Silergy
12W Quasi-Resonant (QR) Flyback Converter
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Технические характеристики

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Корпус SO-8
Топология
Максимальное напряжение силового ключа
Номинальная мощность
Максимальная частота преобразователя
Ток собственного потребления
Примечание 12W Quasi-Resonant (QR) Flyback Converter
Рабочая температура
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Файлы 1

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Application Note: SY50223 Flyback controller For adapters or chargers General Description Features SY50223 is a PWM/PFM controller with several features to enhance performance of Flyback converters that targeting at adapter or charger applications. It integrates a 700V MOSFET to decrease physical volume and drives Flyback controller in the Quasi-Resonant mode for higher efficiency and better EMI performance. SY50223 adopt burst mode control for improved efficiency and the output current is detected by internal primary detection technology to achieve more reliable Over Current Protection and Short Circuit Protection. The output voltage is achieved by secondary side control technology for good load and line regulation. SY50223 provides a fast internal HV start up circuit without consuming any standby power to achieve lowest no-load power consumption. • Quasi-Resonant (QR) mode operation: Valley turn-on of the primary MOSFET to achieve low switching losses • Output current is monitored by primary detection for reliable Over Current Protection and Short Circuit Protection • PWM/PFM conrol for higher average efficiency • Burst mode control for low no-load power and efficiency • HV start up circuit is used to reduce no-load power • Maximum frequency limitation 125kHz • Auto-Recovery OVP/OCP/SCP/OTP • Integrated 700V MOSFET • Compact package: SO8 Ordering Information Applications SY50223 □(□□)□ • • • • Temperature Code Package Code Optional Spec Code Ordering Number SY50223FAC Package type SO8 AC/DC Adapters Battery Chargers Consumer Electronics Auxiliary power supplies Recommended operating output power Products 90Vac~264Vac SY50223 12W Note ---- Typical Applications DS1 DB1 C1 C3 R3 C2 RS1 VOUT+ CS1 CS2 RS2 CS3 VOUT- D1 D2 R4 RS5 C5 RS3 RS6 CS4 C4 R5 R6 U1 SY50223 VIN DRAIN GND DRAIN COMP NC VSEN ISEN US1 PC817 CS5 RS7 RS4 CY1 R7 Fig.1 Schematic Diagram AN_SY50223 Rev.0.9A © 2020 Silergy Corp. 1 PDF
Документация на SY50223FAC 

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Дата модификации: 11.07.2024

Размер: 851.4 Кб

20 стр.

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