PM8804中文资料PoE和电信系统的PWM峰值电流模式控制器数据手册ST规格书

特性 Features

• PWM peak current mode controller
• Input operating voltage up to 75 V
• Internal high-voltage start up regulator with 20 mA current capability
• Current sense with programmable blanking time up to 200 ns
• Programmable fixed frequency up to 1 MHz
• Soft-start up with settable time
• Soft turn off (optionally disabled)
• Dual low-side complementary gate drivers
• Programmable dead time from 10 to 200 ns between GATE1 and GATE2
• Gate drivers have 1 A peak capability
• GATE2 optionally turned off for reduced consumption
• 80% maximum duty cycle with internal slope compensation
• Internal pull-up resistor on CTL pin enables the optocoupler connection
• Operating current consumption & 1.5 mA
• Embedded protections:
•Severe overcurrent protection with latch after 4 events
•Delayed overload protection with automatic restart
•Feedback disconnection (OV) protection on VC
•Thermal shutdown
• High efficiency topologies:
•Flyback, forward
•Flyback with synchronous rectification
•Flyback with active clamp
•Forward with active clamp

简介

PM8804属于集成电路（IC）的PMIC-稳压器-DCDC开关式控制器。由制造生产的PM8804DC-DC 开关控制器PMIC（电源管理集成电路）DC 到 DC 开关式控制器是用于高效率电路的稳压 IC，其配置为生成高于（突升或步升）或低于（突降或步降）输入电源的输出电源电压。其他拓扑结构可能包括：降压-升压、反激、正激、Cuk、SEPIC、全桥、半桥和推挽式。这些器件不同于需要最小电压并“烧尽”多余电压的线性稳压器。