UCD3138数字电源外设编程手册中文版.docx

UCD3138数字电源外设编程手册中文版.docx

《UCD3138数字电源外设编程手册中文版.docx》由会员分享，可在线阅读，更多相关《UCD3138数字电源外设编程手册中文版.docx（97页珍藏版）》请在冰豆网上搜索。

UCD3138数字电源外设编程手册中文版

UCD3138数字电源外设

编程手册

SLUU995A

April2013–RevisedMay2013

1引言.............................................................................................................................11

2数字脉宽调制器（DPWM）………........................................................................12

2.1DPWM框图...........................................................................................................12

2.2DPWM介绍（DPWM多模式，开环）.............................................................13

2.3DPWM标准模式...................................................................................................15

2.4DPWM相移模式...................................................................................................17

2.5DPWM多输出模式（多模）...............................................................................17

2.6DPWM谐振模式...................................................................................................18

2.7三角模式..................................................................................................................20

2.8DPWM前导模式...................................................................................................20

2.9同步FET斜坡和理想二极管仿真计算...................................................................21

2.10自动模式切换..........................................................................................................22

2.10.1谐振LLC例子...........................................................................................................22

2.10.2自动模式切换机制...................................................................................................22

2.11DPWMC、边沿发生、内部多路复用.....................................................................23

2.12多种DPWM寄存器时间分辨率..............................................................................24

2.13PWM计数器和时钟...............................................................................................26

2.14DPWM寄存器-概述...............................................................................................26

2.15DPWM控制寄存器0（DPWMCTRL0）.................................................................26

2.15.1DPWM自动配置中间和最大寄存器...................................................................26

2.15.2内部多路复用..........................................................................................................26

2.15.3逐周电流限制使能..................................................................................................26

2.15.4多模开/关.................................................................................................................28

2.15.5最小占空比模式......................................................................................................28

2.15.6主同步控制选择......................................................................................................29

2.15.7主同步从使能..........................................................................................................29

2.15.8D使能.......................................................................................................................29

2.15.9谐振模式固定占空比使能......................................................................................29

2.15.10DPWMAandB故障极性...................................................................................29

2.15.11消隐使能................................................................................................................30

2.15.12DPWM模式..........................................................................................................30

2.15.13DPWM反相..........................................................................................................30

2.15.14滤波器使能（CLA_EN）.........................................................................................30

2.15.15DPWM使能..........................................................................................................30

2.16DPWM控制寄存器1.............................................................................................30

2.16.1周期计数器预置使能............................................................................................30

2.16.2同步FET斜坡使能.................................................................................................30

2.16.3突发模式使能........................................................................................................31

2.16.4电流/磁通量平衡占空比调整...............................................................................31.

2.16.5同步输出分频因子选择........................................................................................31

2.16.6滤波器标定............................................................................................................31

2.16.7外部同步使能.....................................................................................................