【正文】
es DC / DC converter chip TPS5430, the output power MOS tube can expansion the current . Single Chip Programmable output digital signal, through D / A converter (TLV5618) output analog, through the operational amplifier isolation amplifier, and precision voltage sampling resistor collection enlarged pared to control DC / DC converter39。以MSP430F247單片機(jī)為主控制器,通過鍵盤來設(shè)置電源的輸出電流,設(shè)置步進(jìn)等級為1mA,并可由液晶顯示器顯示實(shí)際輸出電流值和負(fù)載功率。高效數(shù)控恒流電源摘要隨著低碳經(jīng)濟(jì)時(shí)代的到來,提高能源利用率對工業(yè)和社會發(fā)展起著重要的作用?;诖吮疚拿枋隽烁咝蕯?shù)控恒流電源的設(shè)計(jì)原理和實(shí)現(xiàn)方法,本系統(tǒng)采用DC/DC變換器芯片TPS5430,它是一款高效的電源開關(guān)控制芯片,輸入電壓范圍寬,輸出電流高達(dá)3A。本系統(tǒng)還具有開路檢測和過壓保護(hù)功能,可廣泛應(yīng)用于需要高效恒流源的領(lǐng)域。s feedback side, to achieve the output current control. Output current through the current / voltage changes, the adoption of A / D converter chip, realtime into the analog data, and then analyzed by microputer processing, the feedback through the form of data links, so that current is more stable, it constitutes a stable voltagecontrolled current source. Actual test results show that the system o