BL8891B20

Belling
BL8891B Current Mode PWM Power Switch Freq Shuffling GENERAL DESCRIPTION BL8891B combines a dedicated current mode PWM controller with a high voltage power MOSFET. It is optimized for high performance, low standby power, and cost effective off-line flyback converter applications. BL8891B offers complete protection coverage with automatic self-recovery feature including Cycle-by-Cycle current ...
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Технические характеристики

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Топология ШИМ контроллер со встроенным силовым ключом
Максимальная частота преобразователя
Максимальная скважность преобразователя
Примечание
Рабочая температура
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Файлы 1

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BL8891B Current Mode PWM Power Switch Freq Shuffling GENERAL DESCRIPTION BL8891B combines a dedicated current mode PWM controller with a high voltage power MOSFET. It is optimized for high performance, low standby power, and cost effective off-line flyback converter applications. BL8891B offers complete protection coverage with automatic self-recovery feature including Cycle-by-Cycle current limiting (OCP), over load protection (OLP), VDD over voltage clamp and under voltage lockout (UVLO). Excellent EMI performance is achieved with proprietary frequency shuffling technique together with soft switching control at the totem pole gate drive output. The tone energy at below 20KHZ is minimized in the design and audio noise is eliminated during operation. BL8891B is offered in DIP-7 package. FEATURES ■Power on Soft Start Reducing MOSFET VDS Stress ■Frequency shuffling for EMI ■Extended Burst Mode Control For Improved Efficiency and Minimum Standby Power Design ■Audio Noise Free Operation ■Fixed 50KHZ Switching Frequency ■Internal Synchronized Slope Compensation ■Low VDD Startup Current and Low Operating Current ■Leading Edge Blanking on Current Sense Input Good Protection Coverage With Auto Self-Recovery  VDD Over Voltage Clamp and Under Voltage Lockout with Hysteresis (UVLO)  Line Input Compensated Cycle-by-Cycle Over-current Threshold Setting For Constant Output Power Limiting Over Universal Input Voltage Range  Overload Protection (OLP)  Over voltage Protection (OVP) ■DIP7 package APPLICATIONS Offline AC/DC flyback converter for ■Battery Charger ■PDA power supplies ■Digital Cameras and Camcorder Adaptor ■VCR, SVR, STB, DVD&DVCD Player SM ■Set-Top Box Power ■Auxiliary Power Supply for PC and Server ■Open-frame SMPS www.belling.com.cn 1 V1.1 PDF
Документация на BL8891B25 

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Дата модификации: 08.03.2023

Размер: 267.6 Кб

7 стр.

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