电子设计工程
電子設計工程
전자설계공정
Electronic Design Engineering
2015年
21期
123-126
,共4页
谢永超%张文初%刘彤%熊异
謝永超%張文初%劉彤%熊異
사영초%장문초%류동%웅이
漏电保护%功率测量显示%LDO%自锁%设计
漏電保護%功率測量顯示%LDO%自鎖%設計
루전보호%공솔측량현시%LDO%자쇄%설계
leakage protection%power measurement display%LDO%self-locking%design
文章设计了一款额定输出电压5V、额定输出电流为1A、新型的带漏电保护和功率测量显示的低压差线性稳压器（LDO），测试结果表明，当负载阻值为5Ω，直流输入电压在5.5~7 V变化时，输出电压稳定在4.98 V，输入电压在7~25 V变化时，电压调整率为0.2%；直流输入电压固定在7 V，LDO输出电流由1 A减小到0.01 A时，负载调整率为0.1%；当漏电电流≥25 mA时，漏电保护装置动作，负载电阻两端输出电压为0V，并保持自锁。
文章設計瞭一款額定輸齣電壓5V、額定輸齣電流為1A、新型的帶漏電保護和功率測量顯示的低壓差線性穩壓器（LDO），測試結果錶明，噹負載阻值為5Ω，直流輸入電壓在5.5~7 V變化時，輸齣電壓穩定在4.98 V，輸入電壓在7~25 V變化時，電壓調整率為0.2%；直流輸入電壓固定在7 V，LDO輸齣電流由1 A減小到0.01 A時，負載調整率為0.1%；噹漏電電流≥25 mA時，漏電保護裝置動作，負載電阻兩耑輸齣電壓為0V，併保持自鎖。
문장설계료일관액정수출전압5V、액정수출전류위1A、신형적대루전보호화공솔측량현시적저압차선성은압기（LDO），측시결과표명，당부재조치위5Ω，직류수입전압재5.5~7 V변화시，수출전압은정재4.98 V，수입전압재7~25 V변화시，전압조정솔위0.2%；직류수입전압고정재7 V，LDO수출전류유1 A감소도0.01 A시，부재조정솔위0.1%；당루전전류≥25 mA시，루전보호장치동작，부재전조량단수출전압위0V，병보지자쇄。
A LDO with leakage protection and power measurement display is designed. The rated voltage of output is 5 V, rated current of output is 1A. The test results show that, when the load resistance is 5 ohm, DC input voltage is from 5.5 to 7 V, the output voltage is stable at 4.98 V, the voltage at the 7~25 V input changes, the voltage regulation rate was 0.2%;the DC input voltage is fixed at 7 V, the output current of LDO is reduced from 1A to 0.01 A, load adjustment rate is 0.1%;When the leakage current is more than 25mA, the leakage protection device work, the output voltage of load resistance is 0V, and the self-locking is on.
