微电子学
微電子學
미전자학
MICROELECTRONICS
2010年
2期
274-277,282
,共5页
王敬%范哲%冉建桥%索武生%胡永贵
王敬%範哲%冉建橋%索武生%鬍永貴
왕경%범철%염건교%색무생%호영귀
DC/DC变换器%电压前馈%开关电源%PWM
DC/DC變換器%電壓前饋%開關電源%PWM
DC/DC변환기%전압전궤%개관전원%PWM
DC/DC converter%Voltage feedforward%Switch-mode power supply%PWM
介绍了一种应用于降压型DC/DC开关电源的电压前馈技术,通过调整内部三角波的中心电压,使PWM信号占空比跟随输入电源电压快速改变.该技术能有效抑制输入电源电压变化对输出电压的影响,增强输出电压的稳定性.
介紹瞭一種應用于降壓型DC/DC開關電源的電壓前饋技術,通過調整內部三角波的中心電壓,使PWM信號佔空比跟隨輸入電源電壓快速改變.該技術能有效抑製輸入電源電壓變化對輸齣電壓的影響,增彊輸齣電壓的穩定性.
개소료일충응용우강압형DC/DC개관전원적전압전궤기술,통과조정내부삼각파적중심전압,사PWM신호점공비근수수입전원전압쾌속개변.해기술능유효억제수입전원전압변화대수출전압적영향,증강수출전압적은정성.
A voltage feedforward technology for buck DC/DC switch-mode power supply (SMPS) controller was described. In this technology, duty cycle of PWM signal changes quickly with input supply voltage by adjusting the center amplitude of the triangular wave. This technology can be used to effectively suppress effect of the input supply voltage variation on the output voltage, thus improving its stability.
