M54122L

M54122L MITSUBISHI | Alldatasheet

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EARTH LEAKAGE CURRENT DETECTOR M5 4122L MITSUBISHI <CONTROL / DRIVER IC> DES CRIPT IO N The M54122L is a semiconductor integrated circuit with amplifier for a high-speed earth leakage circuit breaker. FEAT URES l Suitable for JIS C 8371 l Good temperature characteristics of input sensitivity current l High input sensitivity (VT = 13.5mV Typ.) l Low external component count l High noise and surge-proof l Low power dissipation (Pd = 5mW Typ.) and may be used both as 100V and 200V. l High mounting density by SIL package with 8 pins l Wide temperature range (Ta = -20 – +80°C) APP LICAT IO N High speed earth leakage circuit breaker FUNCT IO N The M54122L 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. PIN C O N FIG URAT IO N (TO P VIEW ) Outline 8P5 Reference voltage Differential amplifier output Input Latch input Terminal for noise absorption Output VR GND IN SC N R O S VS O D fi fi fi fi BIAS AMP LATCH REG B LOC K D IAGR A M O S output Reference voltage generation circuit Latch circuit N R Terminal for noise absorption SC Latch input O D Differential amplifier output IN Input VR Reference voltage 3GND VS 8 AMP

EARTH LEAKAGE CURRENT DETECTOR M5 4122L MITSUBISHI <CONTROL / DRIVER IC> Supply current SC terminal current VR terminal current IN terminal current ISC IS ABS O LUT E M AXIM UM RA TING S (Ta = -20 – 80°C unless otherwise noted) Symbol Ratings UnitParameter Conditions IVR IIN 250 250 -250 mA mA Pd Power dissipation Topr Operating temperature Tstg Storage temperature 200 mW Between VR -IN (Note 1) Between VR -GND Between IN-VR (Note 1) Between IN-VR (Note 1) Between IN-GND Between VR -IN (Note 1) -250 -20– 80 -55– 125 mA mA Note 1: Current value between VR and IN, and between IN and V R is less than 1ms in the pulse width, and duty cycle is less than 12%. In applying AC current continuously, it is 100mArms in the off-state. Remarks: GND terminal (pin ) of the circuit is a basis of all the voltages 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 don’t apply voltage whose standard is GND terminal in VR and IN pin. REC O M M ENDE D O PERA TIN G C O NDITIO N S (Ta = -20 – 80°C unless otherwise noted) V Limits Min. Typ. Max.Symbol UnitParameter VS Supply voltage when latch circuit is off-state. 12 External capacitor between VS and GND C VS C OS External capacitor between O S and GND 1 mF mF V mA mA mV rms mA EL ECT R ICAL CHARACT ERISTICS (Ta = -20 – 80°C unless otherwise noted) Limits Min. Max.Symbol Test conditions UnitParameter IS1 Supply current 530 -200 V VS = 12V, VR -VI= 30mV -12 -100 -75 0.7 200 400 13.5 580 480 -30 mA mA mA ms Trip voltage Timed current 1 Timed current 2 Output current SC ON voltage (Note 3) SC input current Output low-level current Input clamp voltage Differential input clamp voltage Maximum current voltage Supply current 2 (Note 4) Latch circuit off-state supply voltage (Note 6) Operating time (Note 7) VT ITD1 ITD2 IO VSC “ON” ISC “ON” IOSL VIC VIDC VSM IS2 VS “OFF” TON VS = 16V, VR -VI(Note 2) VS = 16V, VR -VI= 30mV VOD = 1.2V VS = 16V, short circuit between VR and VI, VOD = 0.8V VSC = 1.4V VOS = 0.8V IS1 = 530mA IS1 = 580mA IS1 = 480mA VS = 16V VS = 12V VS = 12V, VOSL = 0.2V IIDC = 100mA ISM = 7mA VR -VI VOS = 0.6V(Note 5) VS = 16V, VR -VI= 0.3V Tempera- ture(°C ) Test circuit -20 -20 VS = 12V, IIC = 20mA 4.3 0.4 0.5 1.4 6.7 900 mA V V V Note : 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 standard value of voltage (60Hz) between VR and VI is maximum, and output O S is high-level, it is considered as a good one. Note 3: When standard value of voltage VSC “ON” is minimum, and output O S is low-level, or when standard value of voltage VSC “ON” is maximum, and output O S is high-level, it is considered as a good one. Note 4: Supply current 2 is necessary to keep high in output O S . 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 O S is high-level, it is considered as a good one in the standard value of supply voltage and in the low-level of output O S. Note 7: Operating time is a time from applying fixed input till operating latch circuit in 0.047mF between O D and GND. Typ.* -20 – +80 -20 – +80 -20 – +80 -20 – +80 -20 – +80

EARTH LEAKAGE CURRENT DETECTOR M5 4122L MITSUBISHI <CONTROL / DRIVER IC> Note: The unit of resistance is ohm. Please insurt 0.01 m F between pin and pin in test. TEST CIRCUI T 11 12 V R IN 0.047 m F GND O D S C N R O S V S Open 0.047 m F I S V S V I V R IN 0.047 m F GND O D S C N R O S V S Open 0.047 m F V S V I V OD I TD2 100 V R IN 0.047 m F GND O D S C N R O S V S Open 0.047 m F V S V I 0.047 m F V OS Vrms V R IN 0.047 m F GND O D S C N R O S V S Open 0.047 m F V S V I V OD I TD1 V R IN 0.047 m F GND O D S C N R O S V S Open 0.047 m F V OS V SC I O I S Open Open V R IN 0.047 m F GND O D S C N R O S V S Open V S V I Open 0.047 m F V OS V SC “ON” 0.047 m F V R IN GND O D S C N R O S V S Open V IDC I IDC V R IN 0.047 m F GND O D S C N R O S V S Open 0.047 m F V S “OFF” V I 0.047 m F V OS V R IN 0.047 m F GND O D S C N R O S V S Open V S V I Open I OSL V OSL 0.047 m F V R IN 0.047 m F GND O D S C N R O S V S Open V S V IC Open 0.047 m F I IC V R IN 0.047 m F GND O D S C N R O S V S Open 0.047 m F V I 0.047 m F I GT V OS I V R IN 0.047 m F GND O D S C N R O S V S Open V S V I 0.047 m F 0.047 m F V R IN GND O D S C N R O S V S Open 0.047 m F I SM V I Open 0.047 m F V SM 0.047 m F V R IN 0.047 m F GND O D S C N R O S V S Open V S V I I SC “ON” V OS Open

EARTH LEAKAGE CURRENT DETECTOR M5 4122L MITSUBISHI <CONTROL / DRIVER IC> TYPICAL CHARAC TER ISTIC S Differential input voltage D V I R – V IN (mV) Supply current 1 vs. supply voltage 100 200 700 10 20 30 Differential amplifier output voltage vs. differential input voltage Differential amplifier output voltage V OD (V) V CC voltage vs. supply voltage V CC voltage V CC (V) 2.5 Reference voltage vs. supply voltage Reference voltage V R (V) -40 100 900 Bias current vs. ambient temperature Ambient temperature T a Timed current 1 vs. ambient temperature Ambient temperature T a T a = -25 C V CC voltage generates by the constant voltage circuit in IC. This is measured not by M54122L but by a special element. Supply voltage V S (V) 51 5 25 300 400 500 600 Supply voltage V S (V) 4 8 12 16 0.5 1.0 1.5 2.0 Supply voltage V S (V) -20 100 200 300 400 500 600 700 800 1000 Timed current 1 I TD1 m -40 100 -20 -50 -10 -20 -30 -40 12 16 20 C T a = -25 C 10 14 18 C C C T a = 75 C C -25 C 10 14 20 12 16 18 T a = 75 C C -25 C Supply current 1 I m Bias current I IN (nA)

EARTH LEAKAGE CURRENT DETECTOR M5 4122L MITSUBISHI <CONTROL / DRIVER IC> 0.4 Output current vs. O S output voltage O S voltage vs. SC voltage Operating time vs. ambient temperature Operating time TON (ms) Ambient temperature Ta (°C) Trip voltage vs. ambient temperature SC voltage VSC (V) 2.5 3.5 4.5 O S voltage VOS (V) -50 0 50 100-25 25 75 -400 Trip voltage VT (mVrms) Ambient temperature Ta (°C) -100 O S output voltage VOS (V) 7654321 Output current IO (mA) -50 0 50 100-25 25 75 75°C Ta = 25°C -25°C Ta = -25°C 25°C 75°C -300 -200

EARTH LEAKAGE CURRENT DETECTOR M5 4122L MITSUBISHI <CONTROL / DRIVER IC> APP LICAT IO N EXAM PLE

• HIGH-SPEED LEAKAGE CIRCUIT BREAKER WITH M54122L 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 1mF) and C 2 (less than 1mF). ZCT and load resistance R L of ZCT are connected between input pin and . In this case protective resistance (RP = 100W ) must be insurted. Sensitivity current is regulated by R L,and output of amplifier shows in pin . External capacitor C 1 between pin 4 and GND is used for noise removal. When large current is grounded in the primary side (AC line) of ZCT, the wave form in the secondary side of ZCT is distorted and some signals doesn’t appear in the output of amplifier. So please connect a varistor or a diode (2 pcs.) to ZCT in parallel. Latch circuit is used to inspect the output level of amplifier and to supply gate current on the external SCR. When input pin becomes more than 1.1V (Typ.), latch circuit operates and supply gate current in the gate of SCR connected to the output pin . Pin can be used in the open state, but please connect capacitor (about 0.047mF) between pin and pin . Voltage regulator Reference voltage generator Latch circuit Supply voltage circuit Amplifier Output circuit Trip coil AC line Note 8 Gate current must be selected. Please select voltage resistance by AC supply voltage. MZ Core Series by Soryo Denshi Kagaku Co., Ltd (Mitsubishi Subsidiary) Tel. +81-427-74-7813 SCR CR2AM CR03AM CR02AM R 2 VS GND 1 2 4 5 6 7 C 4 R L R P 100W C 1 AMP M54122L AC line ZCT C 2 C 3 C 5 R 1 Note 8 : Operating time vs. input voltage Input voltage V1 (mVrms) 1000 1 103 5 7 10030 50 300 500 1000 C 1 = 0.047mF Ta = 25°C 60H Z 700 500 300 100 Operating time tD (ms) 1 2 4 4 6 7 Note 9 9 :