EARTH LEAKAGE CURRENT DETECTOR

www.DataSheet4U.com UTC M54123L LINEAR INTEGRATED CIRCUIT EARTH LEAKAGE CURRENT DETECTOR DESCRIPTION The UTC M54123L is a semiconductor integrated circuit with amplifier for a high-speed earth leakage circuit breaker. SOP-8 FEATURES *Suitable for JIS C 8371 *Good temperature characteristics of input sensitivity current *High input sensitivity (VT=6.1mV Typ.) *Low external component count *High noise and surge-proof *Low power dissipation (Pd=5mW Typ.) and may be used both as 100V and 200V. *Wide temperature range (Ta=-20~+80°C) DIP-8 SIP-8 APPLICATION *High speed earth leakage circuit breaker. FUNCTION The UTC M54123L circuit for the amplifying parts of earth leakage circuit breaker consists of differential amplifier, latch circuit and voltage regulator. It is connected to the secondary side of the zero current transformer (ZCT) which detects leakage current in the both input of the differential amplifier. Signals amplified by differential amplifier are integrated by an external capacitor, and connects to the input terminal of latch circuit with output suitable for the characteristics of high- speed earth leakage circuit breaker. Latch circuit keeps low in the output till the input voltage reaches the fixed level, and output becomes high when the leakage current more than fixed flows. It drives a thyristor connected to the output terminal of latch circuit. UTC UNISONIC TECHNOLOGIES CO., LTD. 1 QW-R122-001,B UTC M54123L LINEAR INTEGRATED CIRCUIT PIN CONFIGURATIONS (TOP VIEW) BLOCK DIAGRAM Vs 8 Reference voltage generator + AMP - latch circuit 7 Os output GND 3 1 VR Reference voltage 2 IN Input 4 OD Differential amplifier output 5 Sc Latch input 6 NR Terminal for noise absorption UTC UNISONIC TECHNOLOGIES CO., LTD. 2 QW-R122-001,B UTC M54123L LINEAR INTEGRATED CIRCUIT ABSOLUTE MAXIMUM RATINGS (Ta=-20~80°C, unless otherwise noted) PARAMETER Supply current VR pin current SYMBOL Is CONDITIONS RATINGS UNIT 8 mA Between VR-IN (Note 1) 250 IVR mA Between VR-GND 30 Between IN-VR(Note 1) -250 IN terminal current Between IN-VR(Note 1) 250 IIN mA Between IN-GND 30 Between VR-IN (Note 1) -250 Sc terminal current Isc 5 mA Power dissipation Pd 200 mV Operating temperature Topr -20 to +80 °C Storage temperature Tstg -55 to +125 °C Note 1: Current value between VR and IN, and between IN and VR is less than 1ms in the pulse width, and duty cycle is less than 12%, In applying AC current continuously, it is 100 mA in the off-state. Remarks: GND terminal (pin 3 of the circuit is a basis of all the voltage except differential input clamp voltage of DC electrical characteristics, and direction of current is plus(no signal) in flowing into the circuit and is minus(-signal)in flowing out of it. Maximum value and minimum one are shown as absolute value. Please do not apply voltage whose standard is GND terminal in VR and IN pin. RECOMMENDED OPERATING CONDITIONS (Ta=-20~+80°C, unless otherwise noted) PARAMETER Supply Voltage when latch circuit is off-state External capacitor between Vs and GND External capacitor between Os and GND SYMBOL Is Cvs Cos MIN 12 1 LIMITS TYP MAX UNIT V µF µF 1 ELECTRICAL CHARACTERISTICS (Ta=-20~+80°C, unless otherwise noted) PARAMETER SYMBOL TEST CONDITIONS TEMPERA -TURE (°C) TEST CIRCUIT LIMITS MIN TYP* MAX UNIT Supply current Is1 Trip voltage Timed current1 Timed current2 Output current VT ITD1 ITD2 Io Sc “ON” voltage (Note3) Sc input current Output low-level current Input clamp voltage VSC”ON” ISC”ON” Iosl VIC -20 25 80 Vs=16V, VR-V1(Note2) -20~+80 Vs=16V, VR-V1=30mV 25 VOD=1.2V Vs=16V, short circuit 25 between VR and V1, VOD=0.8V IS1=580µA -20 VSC=1.4V, IS1=530µA 25 VOS=0.8V, 80 IS1=480µA Vs=16V 25 Vs=12V 25 Vs=12V,Vosl=0.2V -20~+80 Vs=12V, IIC=20mA -20~+80 Vs=12V,VR-V1=30mV 1 1 1 2 3 4 5 5 5 6 7 8 9 400 4 -12 17 -200 -100 -75 0.7 200 4.3 6.1 580 530 480 9 -30 37 µA mV µA µA µA 1.4 5 6.7 V µA µA V UTC UNISONIC TECHNOLOGIES CO., LTD. 3 QW-R122-001,B UTC M54123L LINEAR INTEGRATED CIRCUIT PARAMETER SYMBOL TEST CONDITIONS TEMPERA -TURE (°C) TEST CIRCUIT LIMITS MIN TYP* MAX UNIT Differential input clamp voltage Maximum current voltage VIDC VSM IS2 IIDC=100mA ISM=7mA VR-V1, Vos=0.6V -20~+80 25 -20~+80 10 11 12 0.4 20 2 28 900 V V µA Supply current 2(Note 4) (Note 5) Latch circuit is off-state 25 13 0.5 V VS ”OFF” supply voltage (Note6) Operating time (Note 7) TON Vs=16V,VR-V1=0.3V 25 14 2 4 ms *: Typical values are at Ta=25°C. Note 2: When standard value of voltage (60Hz) between VR and VI is minimum, and output Os is low-level, or when standrd value of voltage(60Hz)between VR and VI is maximum, and output Os is high-level, it is considered as a good one. Note 3: When standard value of voltage VSC”ON” is minimum, and output Os is low-level, or when standard value of voltage VSC”ON” is maximum, and output Os is high-level, it is considered as a good one. Note 4: Supply current 2 is necessary to keep high in output Os. Note 5: After applying 30mV between VR and VI and shorting between them,it is considered as a good one if standard value of IGT flows out of output Os Note 6: After supply voltage applies 12V and output Os is high-level,it is considered as a good one in the standard value of supply voltage and in the low-level of output Os. Note 7: Operating time is a time from applying fixed input till operating latch circuit in 0.047µF between OD and GND. UTC UNISONIC TECHNOLOGIES CO., LTD. 4 QW-R122-001,B UTC M54123L LINEAR INTEGRATED CIRCUIT TEST CIRCUIT 1 2 3 VR IN GND OD Sc NR Os Vs 1 100 VI 2 3 4 5 6 7 Open 0.047 µF VR IN GND OD Sc NR Os Vs Is Vs 0.047 µF Vsm VR IN GND OD Sc NR Os Vs 1 100 0.047 µF 8 1 2 100 1K 3 VI 4 5 6 7 Open 0.047 8 Vs 2 3 4 ITD1 VOD 5 6 7 Open 0.047 µF 8 Vs 0.047 vos µF µF VI 0.047 µF 4 5 6 VR IN GND OD Sc NR Os Vs 1 100 VI VOD ITD2 2 3 4 5 6 7 Open 0.047 µF VR IN GND OD Sc NR Os Vs 1 2 3 4 5 6 7 Open Open 3K 0.047 Vsc µF VR IN GND OD Sc NR Os Vs Is 1 100 0.047 µF 8 Vs 8 2 3 Open 0.047 µF Vos 4 5 6 7 Open Open 3K Vos 0.047 µF “ ON” 8 Vs VI Vsc 0.047 0.047 µF µF ７ 8 9 VR IN GND OD Sc NR Os Vs 1 100 VI Isc“ ON” VR IN GND OD Sc NR Os Vs 1 100 0.047 µF VR IN GND OD Sc NR Os Vs 1 100 0.047 µF 2 3 4 5 6 7 Open Open Vos 8 Vs 2 3 0.047 VI 4 5 6 7 Open Open IosL VosL 0.047 µF 8 Vs 2 3 4 5 6 7 Open Open 0.047 µF 8 Vs IIC VIC 0.047 µF µF 10 11 12 VR IN GND OD Sc NR Os Vs 1 IIDC VIDC 2 3 4 5 Open 6 7 8 VR IN GND OD Sc NR Os Vs 1 100 VI 2 3 4 5 6 7 Open Open 0.047 µF VR IN GND OD Sc NR Os Vs Ism Vsm 1 100 VI 2 3 4 5 6 7 8 Open Vos 8 0.047 µF Is2 0.047 0.047 IGT 0.047 µF µF µF 13 14 VR IN GND OD Sc NR Os Vs 1 100 VI µF VR IN GND OD Sc NR Os Vs Vs "OFF" 2 3 4 5 6 7 Open 8 1 100 2 3 4 5 6 7 Open 8 Vs 0.047 0.047 Vos 0.047 µF µF VI 0.047 0.047 µF µF 0.047 µF Note: The unit of resistance is ohm. Please insurt 0.01 µF between pin 1 and pin 3 in test UTC UNISONIC TECHNOLOGIES CO., LTD. 5 QW-R122-001,B UTC M54123L LINEAR INTEGRATED CIRCUIT TYPICAL CHARACTERISTICS Vcc voltage vs.supply voltage 12 10 Vcc voltage Vcc(V) 8 6 4 2 0 8 10 12 14 16 18 20 Supply voltage Vs(V) Vcc voltage generates by the constant voltage circuit in IC. This is measured not by M54123L but by a special element. Ta=-25℃ 25℃ 75℃ Supply current 1 Is1(μ A） 700 600 500 400 300 75℃ 200 100 0 Ta=-25℃ 25℃ Supply current 1 vs.supply voltage 5 10 15 20 25 30 Supply voltage Vs（V） Reference voltage vs.supply voltage 2.5 Ta=75℃ Reference voltage VR （V） 25℃ Bias current IIN（nA） 2.0 -25℃ 1.5 1.0 1000 900 800 700 600 500 400 300 200 100 0 0 4 8 12 16 20 Bias current vs。ambient temperature 0.5 0 -40 -20 0 20 40 60 80 100 Supply voltage Vs(V) Ambient temperature Ta（℃） Differential amplifier output voltage vs. differential input voltage Differential amplifier output voltage V OD（V） 2.5 Timed current 1 ITD1（μ A） -50 -40 -30 -20 Timing current vs. ambient temperature 2.0 1.5 1.0 Ta=75℃ 0.5 0 5 6 7 8 9 10 25℃ -25℃ -10 0 -40 -20 0 20 40 60 80 100 Differential input voltage △ VI=VR-VIN（mV） Ambient temperature Ta（℃） UTC UNISONIC TECHNOLOGIES CO., LTD. 6 QW-R122-001,B UTC M54123L LINEAR INTEGRATED CIRCUIT Os voltage vs.Sc voltage 8 4.5 Operating tim e vs. a mbient temperature Os voltage Vos(V) 6 Operating time TON (ms) 1.8 Ta=75℃ 25℃ -25℃ 4 3.5 4 3 2.5 2 -50 2 0 0.4 0.6 0.8 1 1.2 1.4 1.6 -25 0 25 50 75 100 Sc voltage Vsc(V) Ambient temperature Ta（℃） Output current vs. Os output votltage -400 Output current Io （μ A） 10 Ta=-25℃ 8 -300 25℃ -200 75℃ Trip voltage VT(mVrms) 6 Trip voltage vs. a mbient temperature 4 2 0 -50 -100 0 0 1 2 3 4 5 6 7 -25 0 25 50 75 100 Os output voltage Vos(V) Ambient temperature Ta（℃） UTC UNISONIC TECHNOLOGIES CO., LTD. 7 QW-R122-001,B UTC M54123L LINEAR INTEGRATED CIRCUIT APPLICATION CIRCUIT HIGH-SPEED LEAKAGE CIRCUIT BREAKER WITH UTC M54123L Amplifier Output circuit Supply voltage circuit UTC M54123L Trip coil AC line R2 Vs C4 3 GND 1 RL C6 AC line 2 RP 100Ω ZCT 4 5 C1 6 C3 7 Note 8 SCR CR2AM CR03AM CRO2AM 8 Voltage regulator Reference voltage generator + - AMP Latch circuit R1 C2 C5 Note 8:Gate current must be selected. Please select voltage resistance by AC supply voltage Operating time vs.input voltage 1000 700 500 300 Operating time tD (ms) 100 70 50 30 10 7 5 3 1 1 3 5 710 30 5070100 300500 1000 C1=0.047μ F Ta=25℃ 60Hz Input voltage V1 (mVrms) UTC UNISONIC TECHNOLOGIES CO., LTD. 8 QW-R122-001,B UTC M54123L LINEAR INTEGRATED CIRCUIT Supply voltage circuit is connected as a previous diagram. Please decide constants R1, R2, C4, and C5 of a filter in order to keep at least 12V in Vs, when normal, supply current flows. In this case, please connect C4 (more than 1μF) and C2 l