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uc3823 做PWM控制器的300kHz BUCK补偿环设计问题

Wang Shiming1
Intellectual 300 points
Other Parts Discussed in Thread: UC3823

小弟最近使用TI的UC3823设计了一款300KHz的BUCK电源。经实验测定，BUCK主电路VIN =36V，L=17.5μH，C=300μF，开关频率ƒ=300kHz,负载电阻范围为0.6Ω~5Ω，这里取RL=1.2Ω。看TI的PWM控制器UC3823的芯片资料里说RAMP脚斜坡电压的峰峰值好像为为VRAMP=1.8V，UC3823的2脚电压设置为5V。要求BUCK电源输出电压10V.