It is based on umc 0 . 6 m bcd process . a built - in power mosfet with low on - resistance and a lossless current sensing circuit on chip provide fast and precise current mode control . furthermore , the whole losses decrease and high efficiency up to 90 % can be obtained 它采用umc0 . 6 mbcd工艺制程,利用内置的低导通电阻功率mosfet和内置的无损耗电流感应电路实现了快速精确的电流模式控制,同时也降低了功耗,提高了转换效率,典型的效率可达90 % 。
Different distribution of power loss can be worked out by mathcad software based on the formula reasoning . the result of calculation is consistent with that of the experiment , which proves that this method is right . it is pointed out through the analysis of calculating data that the key to improve efficiency at the same output power is to decrease the peak current and rms current of power switches or the on - resistance of mosfet and windings 由推导可得损耗计算公式，利用数学计算软件计算出电路输出从空载到410w阻性负载时损耗分布变化，该结果与实验数据基本相吻合，证实了这种方法的正确性；通过对计算数据的分析，指出了进一步提高效率的关键在于输出相同功率时降低功率管的电流峰值和有效值，减小绕组和mosfet的导通电阻。
The experiment result shows that conversion efficiency in ccm is improved by 2 percent compared with that in dcm , although the on - resistance of winding in ccm is more than that in dcm . the analysis of open - loop transfer function in both dcm and ccm shows that pull - push hfl inverter at ccm 微分补偿网络的推挽高频链逆变电路在输出从空载变化到额定阻性负载变化的过程中，逆变电路工作模式从dcm变化到ccm模式，实验结果表明电路在这两种模式下都能输出稳定的正弦电压，且具有较高的稳态精度。
