GL7101 GL7101 EARTH LEAKAGE CURRENT DETECTOR (Top view) 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. VR 1 IN 2 8 V+ 7 OS GL7101 GND 3 6 NR OD 4 5 SC Feature • • • • • • • • Absolute Maximum Rating (TA = 25¡ É) 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 Supply voltage Supply Current Power Dissipation Operating Temperature Storage Temperature Pin Configuration Block diagram V+ OS NR SC 8 7 6 5 Latch Voltage Regulator Bias Amp 1 2 3 4 V IN GND O 1 20 8 200 -30 to 85 -55 to 125 V mA mW ¡ É ¡ É 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 Supply Current 1 * Trip Voltage Differential Amplifier Output Current 1 * SYMBOL IS1 TEMP (¡ É) CONDITIONS V+=12V, VR-VI=30mV + VT V =16V, VR-VI=X ITD1 V+=16V, VR-VI=30mV VOD=1.2V MIN. TYP. MAX -30 - - 580 25 - 400 530 ITD2 V =6V, VR-VI=short VOD=0.8V Output Current IO VSC=1.4V VOS=0.8V ISI=580 µA ISI=530 µA ISI=480 µA TEST CIRCUIT µA 1 85 - - 480 -30 85 9 13.5 18 mV(rms) 2 25 -12 - -30 µA 3 25 17 - 37 µA 4 -30 -200 - 25 -100 - µA 5 85 -75 - + Differential Amplifier Output Current 2 UNIT SC On Voltage VSC ON V+=16V 25 0.7 - 1.4 V 6 SC Input Current ISC ON V+=12V 25 - - 5 µA 7 200 - - µA 8 Output "L" Current IOSL V+=12V, VOSL0.2V -30 85 Input Clamp Voltage VIC V+=12V, VIC=20mA -30 85 4.3 - 6.7 V 9 Differential Input Clamp Voltage VIDC IIDC=100mV -30 85 0.4 - 2 V 10 Max. Current voltage VSM ISM=7mA Supply Current 2 IS2 Latch Circuit Off Supply Voltage V+OFF Response Time TON VOS=0.5V, VR-VI=X V+=16V, VR-VI=0.3V A: 9 ~ 12.55 B: 11.5 ~ 15.5 C: 14.5 ~ 18 2 25 20 - 28 V 11 -30 85 - - 900 µA 12 25 0.5 - V 13 25 1 - ms 14 4 GL7101 Typical Performance Curves SUPPLY CURRENT-SUPPLY VOLTAGE VOLTAE-SUPPLY VOLTAGE 700 12 SUPPLY CURRENT IS1 TA=-25¡ É Voltage VCC (V) 10 8 25¡ É 75¡ É 6 4 2 10 12 14 16 18 20 TA=-25¡ É 400 25¡ É 75¡ É 300 200 5 15 20 25 SUPPLY VOLTAGE V+ (V) Frequency Frequency 2.5 1000 BIAS CURRENT IIN nA 2 25¡ É 1.5 30 BIAS CURRENT-TEMPERATURE TA=-25¡ É 75¡ É 1 500 1.0 0.5 0 4 8 12 16 20 -40 -20 SUPPLY VOLTAGE VS (V) DIFFERENTIAL AMPLIFIER OUTPUT VOLTAGE - DIFFERENTIAL INPUT VOLTAGE -50 5 4 3 2 TA=75¡ É 1 0 0 20 40 60 80 100 TEMPERATURE TA (¡ É ) DIFFERENTIAL AMPLIFIER OUTPUT CURRENT-TEMP DIFFERENTIAL AMP CURRENT ITD1 §Ë DIFFERENTIAL AMP OUTPUT VDD (V) 10 SUPPLY VOLTAGE V+ (V) REFERENCE VOLTAGE-SUPPLY VOLTAGE REFERENCE VOLTAGE VR(V) 500 100 0 0 8 600 -25¡ É 25¡ É 10 12 14 16 18 -40 -30 -20 -10 0 20 -40 -20 0 20 40 60 80 100 DIFFERENTIAL INPUT VOLTAGE TEMPERATURE TA (¡ É ) ¡ âVI=VR-VIN (mV) 3 GL7101 Test Circuit 1. 2. 0.047µF 3. 0.047µF 0.047µF 0.047µF 0.047µF 0.047µF 0.047µF VOS IS1 8 7 6 8 5 7 6 5 V+ V+ V+ OS NR V+ SC 1 2 3 OS NR SC VR IN GND OD VR IN GND OD 1 4 8 7 V+ OS NR 2 3 4 1 2 VI V1 VSC 0.047µF 0.047µF 3 0.047µF VOS VOD 6. 3K 0.047µF 7 6 5 V+ OS NR V+ 8 7 6 5 V+ OS NR V+ SC VR IN GND OD 1 2 3 VOS 3K 6 5 1 100 2 3 OS NR 0.047µF ISC ON 0.047µF 1 7 OS NR SC VR IN GND OD 3 4 4 9. 0.047µF 0.047µF 0.047µF VOSL IOSL 8 7 6 5 8 7 6 5 V+ V+ OS NR V+ OS NR SC VR IN GND OD 1 2 100 VI 3 100 V+ 2 2 VI VOS 6 5 V+ SC VR IN GND OD 4 8. 1 V+ VOD 7. V+ 7 ITD2 VI 8 8 V+ SC VR IN GND OD 4 0.047µF 0.047µF IC 8 ITD1 4 V1 5. 0.047µF SC 100 IN 4. 5 VR IN GND OD 1k 100 100 6 V+ 3 100 VI 4 SC VR IN GND OD 4 1 2 3 100 IIC VIC 4 VSC ON GL7101 10. 11. 12. 0.047µF 8 7 6 V+ OS NR 5 8 7 SC V+ OS NR 2 3 6 1 4 2 IIDC 3 8 SC V+ OS NR 1 4 VI 14. 0.047µF 0.047µF OFF 8 VS V+ 7 OS NR 8 7 6 V+ V+ OS NR SC VR IN GND OD 1 2 100 VI 3 0.047µF 0.047µF V0S 6 5 4 5 SC VR IN GND OD 1 0.047µF 2 100 100 13. 2 3 100 4 0.047µF VI 5 SC VR IN GND OD VI VIDC 7 V0S IGT 6 5 5 VR IN GND OD VR IN GND OD 1 IS2 0.047µF ISM 0.047µF 0.047µF 0.047µF VS 3 4 0.047µF GL7101 Typical Application TRIP COIL R2 VS 8 AC LINE C4 2 1 3 4 5 6 7 GND SCR RL R3 C3 C1 AC LINE 6 R1 C2 C5