Also, the RT7740 series features a multi-mode control scheme, operating from continuous-conduction mode (CCM) to discontinuous-conduction mode (DCM) with valley switching, to achieve high efficiency and optimal performance. The RT7740 is a current-mode PWM controller for flyback converters. It ...
By utilizing the AC G-NAVPTM topology, the operating frequency of the RT8848C varies with VID, load and input voltage to further enhance the efficiency even in CCM. Besides, for current sensing application, the RT8848C can support either a traditional DCR network current sensi...
负载加重进入CCM: AC两侧低于200V的区域全部CRM,中间以CCM工作: 进网电流: 小结:提出一种无桥PFC的多模式工作控制方法,可以在AC工频周期内直接跨越DCM/CRM/CCM的工作,实现在不同的负载情况下实现最佳的效率转换。本人能力有限,目前还在继续研究该控制方法,如有错误恳请帮忙指正谢谢。 查看原文: https://www.dianyu...
SEMC configuration might need to be * adjusted here to fine tune the SDRAM performance */ CCM->CLOCK_ROOT[kCLOCK_Root_Semc].CONTROL = 0x602; } #endif #endif/*** *** Configuration BOARD_BootClockRUN *** ***/ /* TEXT BELOW IS USED AS SETTING FOR TOOLS *** !!Configuration name...
Displacement124.5 ccm (7.60 cubic inches) Engine typeSingle cylinder, four-stroke Power output13.4HP(9.8kW)) @ 10000RPM Top speed105.0 km/h (65.2 mph) Borexstroke57.0 x 48.8 mm (2.2 x 1.9 inches) Valvesper cylinder4 Fuel systemCarburettor. Euro 3 ...
CCM->CBCDR[IPG_PODF] = 2'b11,divide by 4 为了测试普通 GPIO 的最优性能,我们需要同时再测试一种新的系统时钟配置,AHB/Core 时钟源选用 PLL2_PFD3,将这个源配置为 452.6 MHz,AHB_PODF 依旧设 0,这样 IPG_PODF 设 2(三分频)可以得到 150.8MHz 的 IPG 时钟,这时普通 GPIO 访问可以得到最优性能,...
2 Set LPSPI_CKL_SEL according to the register CCM_CBCMR. 3 Enable LPSPIn clock according to the register CCM_CCGR1. 4 Set clock gate according to register CCM_ANALOG_PFD_480n[PFDn_CLKGATE]. 5 Set LPSPI_PODF according to register CCM_CBCMR. 6 Set TCR[PRESCALE] according to LPSPIx...
CCM_CSCMR1[USDHC1_CLK_SEL]寄存器 27.11.2.3. 初始化USDHC 初始化SD卡之前首先要配置USDHC接口,因为使用了NXP的sdmmc中间件程序,所以初始化过程比较简单,只需要配置初始化结构体然后初始化函数即可。如代码清单 27‑19所示 代码清单 27‑19USDHC
(拍前询价)RT16-00C,500V,63A、(拍前询价)RT16-00C,500V,80A、(拍前询价)RT16-00C,500V,100A、(拍前询价)RT16-1,500V,80A、(拍前询价)RT16-1,500V,100A、(拍前询价)RT16-1,500V,125A、(拍前询价)RT16-1,500V,160A、(拍前询价)RT16-1,500V,200A、(拍前询价)RT16-1,500V,250...
Clock controller module (CCM) The CCM generates and controls the clocks of various modules in the design and manages the low- power modes. This module uses the available clock sources to generate the clock roots. The clock sources used in the motor control demo are: • PLL3, also called...