恒定的关机时间开关调节器同恒频设计相比有几大优点：动态响应好；对分谐波振荡不敏感，因而不需要斜率补偿。此外，小信号增益特性还接近于理想程度。唯一的潜在问题是开关频率会随着输入电压上升而增大。在采用高线与低线电源电压比很大的设计中，这一频率变化可能会相当大 Constant Turn-Off Time Switching regulators offer several advantages over constant-frequency designs: good dynamic response; insensitivity to subharmonic oscillations and therefore no slope compensation. In addition, small signal gain characteristics are close to the ideal level. The only potential problem is that the switching frequency increases as the input voltage increases. This frequency change can be quite large in designs that employ a high to low line supply voltage ratio