The MP3215 uses a constant frequenc

The MP3215 uses a constant frequency, peak
current mode boost regulator architecture to
regulate the output voltage. The operation of
the MP3215 can be understood by referring to
the block diagram of Figure 1.
At the start of each oscillator cycle the FET is
turned on through the control circuitry. To
prevent sub-harmonic oscillations at duty cycles
greater than 50 percent, a stabilizing ramp is
added to the output of the current sense
amplifier and the result is fed into the positive
input of the PWM comparator. When this
voltage equals the output voltage of the error
amplifier the power FET is turned off.
The voltage at the output of the error amplifier
is an amplified version of the difference
between the 1.25V reference voltage and the

結果 (中文) 1:

MP3215 使用恒频峰值电流模式升压调节器建筑到调节输出电压。操作MP3215 可以理解所指的图 1 的块图。在每个振荡器周期开始 FET 是通过控制电路接通。自工作周期防止亚谐波振荡大于 50%，一个稳定的斜坡添加到输出电流检测放大器和结果送入积极PWM 比较器的输入。当这电压等于输出电压的误差放大器功率场效应晶体管处于关闭状态。在误差放大器的输出电压是一个放大的版之间的 1.25 v 参考电压和

結果 (中文) 3:

的mp3215采用恒定频率，峰值电流模式升压调节器架构调节输出电压。操作的mp3215可以参照理解图1的方框图。在每个振荡周期FET的开始接通控制电路。以防止占空比次谐波振荡大于百分之50，一个稳定的坡道是添加到当前意义的输出放大器和结果被馈送到正脉宽调制比较器的输入。当这电压等于输出电压的误差放大器的功率场效应晶体管是关闭的。在误差放大器输出电压是一个放大版的差异该参考电压为1.25V，之间