IW1821-11中文資料瑞薩數據手冊PDF規(guī)格書

■ Optimized for input voltage of 110VAC to 550VAC for twowire

inputs and 110VAC to 450VAC for line-to-line voltage

of a 3-phase distribution system

■ AccuSwitchTM technology ? integrated 1200V bipolar

junction transistor (BJT)

■ Adaptively controlled soft-start enables fast and

smooth start-up for a wide range of capacitive loads

(from 330μF to 6,000μF) with output voltage of 5V to

12V and above

■ Very tight constant voltage and constant current

regulation over entire operating range

■ PrimAccurate? primary-side feedback eliminates

optocoupler and simplifies design

■ EZ-EMI TM design enhances manufacturability

■ Intrinsically low common mode noise

■ Optimized 72kHz maximum PWM switching

frequency achieves best size and efficiency

■ Adaptive multi-mode PWM/PFM control improves

efficiency

■ Quasi-resonant operation for highest overall efficiency

■ Dynamic base current control

■ No external loop compensation components required

■ Built-in single-point protections against output shortcircuit,

output low impedance, and output overvoltage

■ Built-in over-temperature protection (OTP)

■ No audible noise over entire operating range