PLECS 应用示例(15):具有峰值电流控制的降压转换器(Buck Converter with Peak Current Control) 漫步人生 1概述 此演示展示了一个具有电阻负载的电流控制降压转换器。PLECS峰值电流控制器块用于实现峰值电流模式控制,并且在模拟和数字实现中都提供了电压控制回路。 2 Model 2.1电源电路 一个简单的降压转换器拓扑结构...
图3:带BCM的预测电流控制 预测峰值电流模式控制(Predictive peak current mode control) 峰值电流控制器根据电流指令icommand调节峰值纹波电流。在开关周期开始时,计算PWM信号的开启时间ton,以达到峰值电流设定点。通过控制PWM信号toff的关闭时间,电流减小到0。通过预测电感器电流上升斜率m1和下降斜率m2来计算通断持续时间,...
The small-signal model of a peak current-mode buck converter [1] [2] will be introduced in this section. The Buck PWM Switch Model, proposed by V. Vorperian [1] and the small-signal model for peak current-mode control, by Raymond B. Ridley [2] are displayed in Figure 3. The equat...
Configure and Run Digital DC/DC Buck Converter Peak Current Mode Control (PCMC) Model 1. Open the f280049C_DCDC_Buck_PCMC model. This model is configured for TI Piccolo F280049C LaunchPad hardware. 2. To run the model on other TI C2000 processors, first press Ctrl+E to open the Conf...
As an active approach to improve the stability degraded by the source subsystem interaction, the positive feedforward (PFF) control is proposed for the peak-current-mode-controlled buck converter. PFF control stabilizes the input port in the frequency range where the source subsystem interaction ...
DC-DC converterTraditional local-averaged state-space modeling for peak current mode (PCM) controls fails to explain the subharmonic oscillation phenomenon when the spectrum is higher than half of the switching frequency. To address this problem, this paper presents a small-signal modeling method in...
建模。在文献[19]的基础上,文献[20]探究了不可导Fig.2Buckconverterunderpeakcurrent-modecontrol 第39卷第1期程翔鹏等峰值电流控制Buck变换器高频建模及结合遗传算法的控制器优化设计219 H为控制器,V为基准电压,A为加法器,C vrefddOMP 为比较器,S为斜坡补偿V的斜率,R为电流采样 esi 增益,CLK为开关频率fs的时...
峰值电流模式（PCMC）是目前应用最为广泛的控制模式，因其内在多环结构，输入前馈及输出反馈的影响，电路...
摘要: Investigates the use of peak-current-mode (PCM) controlled buck converter in continuous inductor current mode. Effect of input filter on input and output dynamics; Comparison between PCM and duty-ratio control; Design of the buck converter with input filter....
Integrated features include a high side switch, fixed frequency Peak Current Mode Control, internal compensation, peak current limit and overtemperature protection. Minimal external components are necessary to develop a complete step-down DC-DC converter power supply. Explore MCP16331 P...