GL7101

GL7101 GL7101 EARTH LEAKAGE CURRENT DETECTOR Description The GL7101 is designed for use in earth leakage circuit interrupters for operation directly off the AC Line in breakers. It contains pre regulator, main regulator, after regulator, differential amplifier, level comparator, latch circuit. The input in the differential amplifier is connect to the secondary node of zero current transformer. The level comparator generates high level when earth leakage current is greater than some level. (Top view) VR IN GND OD 1 2 GL7101 3 4 8 7 6 5 V+ OS NR SC Feature • • • • • • • • Low Power consumption (PD = 5mW) 100V/ 200V 100V/200V Common Built-in Voltage Regulator High Gain Differential Amplifier High Input Sensitivity Minimum External Parts Large Surge Margin Wide Operating Temperature Range (TA = -30 to 85¡ ) É High Noise Immunity Absolute Maximum Rating (TA = 25¡ É ) Supply voltage Supply Current Power Dissipation Operating Temperature Storage Temperature 20 8 200 -30 to 85 -55 to 125 V mA mW ¡É ¡É Pin Configuration Block diagram V+ 8 OS 7 NR 6 SC 5 Voltage Regulator Latch Bias Amp 1 2 3 4 V IN GND O 1 GL7101 Recommended Operating Condition : Ta = -30¡ Éto 80¡ É PARAMETER Supply Voltage VS-GND Capacitor OS-GND Capacitor SYMBOL V+ CVS COS MIN. 12 1 TYP. MAX. UNIT V µF µF 1 Electrical Characteristics PARAMETER SYMBOL CONDITIONS TEMP (¡ É ) -30 Supply Current 1 IS1 V+=12V, VR-VI=30mV 25 85 * MIN. 9 -12 17 -200 -100 -75 0.7 200 4.3 0.4 20 0.5 1 TYP . 400 13.5 - MX A 580 530 480 18 -30 37 UNIT TEST CIRCUIT 1 µA mV(rms) Trip V oltage VT ITD1 ITD2 V =16V, VR-VI=X V+=16V, VR-VI=30mV VOD=1.2V V =6V, VR-VI=short VOD=0.8V VSC=1.4V VOS=0.8V V+=16V V+=12V V+=12V, VOSL0.2V V+=12V, VIC=20mA IIDC=100mV ISM=7mA VOS=0.5V, VR-VI=X + + -30 85 25 25 -30 25 85 25 25 -30 85 -30 85 -30 85 25 -30 85 25 2 3 4 Differential Amplifier Output Current 1 Differential Amplifier Output Current 2 Output Current SC On V oltage SC Input Current Output "L" Current Input Clamp V oltage Differential Input Clamp V oltage Max. Current voltage Supply Current 2 Latch Circuit Off Supply V oltage Response Time * µA µA µA ISI=580 µA ISI=530 µA ISI=480 µA IO VSC ON ISC ON IOSL VIC VIDC VSM IS2 V+OFF TON 5 6 7 8 9 10 11 12 13 14 1.4 5 6.7 2 28 900 V µA µA V V V µA V V+=16V, VR-VI=0.3V 25 4 ms A: 9 ~ 12.55 B: 11.5 ~ 15.5 C: 14.5 ~ 18 2 GL7101 Typical Performance Curves VOLTAE-SUPPLY VOLTAGE 12 10 700 SUPPLY CURRENT-SUPPLY VOLTAGE SUPPLY CURRENT IS1 TA=-25¡ É 600 500 TA=-25¡ É Voltage V (V) CC 8 6 4 2 0 8 10 12 14 16 25¡ É 75¡ É 400 300 200 100 0 5 10 15 20 25¡ É 75¡ É 18 20 25 30 SUPPLY VOLTAGE V+ (V) Frequency SUPPLY VOLTAGE V+ (V) Frequency REFERENCE VOLTAGE-SUPPLY VOLTAGE REFERENCE VOLTAGE V (V) R 2.5 BIAS CURRENT-TEMPERATURE 1000 2 1.5 1 1.0 0.5 0 25¡ É 75¡ É BIAS CURRENT IIN nA 20 TA=-25¡ É 500 4 8 12 16 -40 -20 SUPPLY VOLTAGE VS (V) 0 20 40 60 80 100 TEMPERATURE TA (¡ É ) DIFFERENTIAL AMPLIFIER OUTPUT VOLTAGE - DIFFERENTIAL INPUT VOLTAGE DIFFERENTIAL AMP OUTPUT V (V) DD DIFFERENTIAL AMPLIFIER OUTPUT CURRENT-TEMP -50 5 DIFFERENTIAL AMP CURRENT ITD1 §Ë -25¡ É 4 3 2 TA=75¡ É -40 -30 -20 -10 0 1 0 25¡ É 10 12 14 16 18 20 -40 -20 0 20 40 60 80 100 DIFFERENTIAL INPUT VOLTAGE ¡ â I=VR-VIN (mV) V TEMPERATURE TA (¡ É ) 3 GL7101 Test Circuit 1. 0.047µF IS1 8 V+ V+ OS NR SC 7 6 5 0.047µF 2. 0.047µF 8 V+ V+ OS NR SC 7 0.047µF VOS 6 5 0.047µF 3. 0.047µF 8 V+ V+ OS NR SC 7 0.047µF 6 5 VR IN GND OD 1 100 V1 2 3 4 IN VR IN GND OD 1 2 3 4 VR IN GND OD 1 2 3 100 V1 VOD 4 ITD1 1k 100 VI 4. 0.047µF 8 V+ V+ OS NR SC 7 0.047µF 6 5 5. 0.047µF IC 8 V+ V+ OS NR 7 6 VSC 6. 3K 0.047µF 8 V+ V+ 7 0.047µF 0.047µF 0.047µF VOS 5 SC VOS 3K 6 5 SC VSC ON OS NR VR IN GND OD 1 2 3 100 VI VOD 4 ITD2 VR IN GND OD 1 2 3 4 VR IN GND OD 1 2 3 100 VI 4 7. 0.047µF 8 V+ V+ OS NR SC 7 0.047µF 8. ISC ON 0.047µF 8 V+ V+ OS NR SC 7 0.047µF 9. 0.047µF VOS 6 5 V IOSLOSL 6 5 V+ V+ OS NR SC 8 7 6 5 VR IN GND OD 1 2 3 100 VI 4 VR IN GND OD 1 2 3 100 VI 4 IIC VR IN GND OD 1 2 3 100 VIC 4 4 GL7101 10. 11. 0.047µF 0.047µF 12. 0.047µF 0.047µF VS ISM 8 V+ 7 6 5 SC 8 V+ 7 0.047µF IS2 8 7 6 5 SC V0S IGT 6 5 SC OS NR OS NR V+ OS NR VR IN GND OD 1 IIDC VIDC 2 3 4 VR IN GND OD 1 2 3 100 VI 4 VR IN GND OD 1 100 VI 2 3 4 0.047µF 13. 14. 0.047µF 0.047µF 0.047µF 0.047µF OFF 8 VS V+ 7 V0S 6 5 SC OS NR 8 76 V+ V+ OS NR 5 SC VR IN GND OD 1 100 VI 2 3 4 0.047µF VR IN GND OD 1 100 VI 2 3 4 0.047µF 5 GL7101 Typical Application TRIP COIL R2 VS 8 C4 3 GND SCR RL R3 C3 R1 1 2 4 5 6 7 AC LINE C1 AC LINE C2 C5 6