基于dsPIC33F GS系列的1KVA離線UPS參考設計方案

Microchip 公司的dsPIC33F GS系列是高性能數字信號處理器(DSC), 具有40 MIPS性1,以及4路硬件DMA,多達85個可編程數字I/O引腳,豐富外設特性,多達9個PWM產生器,4個高速模擬比較器和高速10位ADC等,主要用在AC/DC轉換器,汽車中的HID,電池充電器,DC/DC轉換器,數字照明和UPS等.本文介紹采用dsPIC33F GS系列的1KVA 離線UPS參考設計各部件的基本原理,方框圖,電指標和詳細的電路圖.

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.


圖1.離線UPS方框圖

1 kVA 離線UPS參考設計

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圖2.離線UPS參考設計外形圖


圖3.離線UPS參考設計方框圖

圖4.推挽轉換器方框圖

圖5.數字反激開關模式充電器方框圖

圖6.線性充電器方框圖

圖7.開關模式充電器方框圖

圖8. 鐵磁共振變壓器充電器方框圖

圖9.SCR充電器方框圖

圖10.離線UPS方框圖

離線UPS參考設計電指標:


圖11.離線UPS參考設計電路圖(1)

圖12.離線UPS參考設計電路圖(2)

圖13.離線UPS參考設計電路圖(3)

圖14.離線UPS參考設計電路圖(4)

圖15.離線UPS參考設計電路圖(5)

圖16.離線UPS參考設計電路圖(6)

圖17.離線UPS參考設計電路圖(7)