基于dsPIC33F GS系列的1KVA离线UPS参考设计方案

Microchip 公司的dsPIC33F GS系列是高性能数字信号处理器(DSC), 具有40 MIPS性1,以及4路硬件DMA,多达85个可编程数字I/O引脚,丰富外设特性,多达9个PWM产生器,4个高速模拟比较器和高速10位ADC等,主要用在AC/DC转换器,汽车中的HID,电池充电器,DC/DC转换器,数字照明和UPS等.本文介绍采用dsPIC33F GS系列的1KVA 离线UPS参考设计各部件的基本原理,方框图,电指标和详细的电路图.

Microchip’s Digital Pure Sine Wave UninterrupTIble Power Supply (UPS) Reference Design is based on the dsPIC33F “GS” series of digital-power Digital Signal Controllers (DSCs). This reference design demonstrates how digital-power techniques when applied to UPS applicaTIons enable easy modificaTIons through software, the use of smaller magneTIcs, intelligent battery charging, higher efficiency, compact designs, reduction in audible and electrical noise via a purer sine-wave output, USB communication and low-cost overall bill-of-materials. This reference design is Royalty Free.

An Uninterruptible Power Supply, or UPS, is an electronic device that provides an alternative electric power supply to connected electronic equipment when the primary power source is not available.

Unlike auxiliary power, a UPS can provide instant power to connected equipment, which can protect sensitive electronic devices by allowing them to shut down properly and preventing extensive physical damage. However, a UPS can only supply energy for a limited amount of time, typically 15 to 20 minutes.

Although its use can extend to a virtually unlimited list of applications, in past years the UPS has become even more popular as a means of protecting computers and telecommunication equipment, thus preventing serious hardware damage and data loss.


图1.离线UPS方框图

1 kVA 离线UPS参考设计

 
图2.离线UPS参考设计外形图


图3.离线UPS参考设计方框图

图4.推挽转换器方框图

图5.数字反激开关模式充电器方框图

图6.线性充电器方框图

图7.开关模式充电器方框图

图8. 铁磁共振变压器充电器方框图

图9.SCR充电器方框图

图10.离线UPS方框图

离线UPS参考设计电指标:


图11.离线UPS参考设计电路图(1)

图12.离线UPS参考设计电路图(2)

图13.离线UPS参考设计电路图(3)

图14.离线UPS参考设计电路图(4)

图15.离线UPS参考设计电路图(5)

图16.离线UPS参考设计电路图(6)

图17.离线UPS参考设计电路图(7)