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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~+80C)
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
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UTC M54123L LINEAR INTEGRATED CIRCUIT
ABSOLUTE MAXIMUM RATINGS (Ta=-20~80C, 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~+80C, 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 F F
1
ELECTRICAL CHARACTERISTICS (Ta=-20~+80C, 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=580A -20 VSC=1.4V, IS1=530A 25 VOS=0.8V, 80 IS1=480A 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
A
mV A A
A 1.4 5 6.7 V A A V
UTC
UNISONIC TECHNOLOGIES CO., LTD.
3
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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 A
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=25C. 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 0.047F 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 67 Open 0.047
F
VR IN GND OD Sc NR Os Vs Is Vs 0.047
F
Vsm
VR IN GND OD Sc NR Os Vs 1 100 0.047
F
8
1 2 100 1K
3 VI
4
5
67 Open
0.047
8 Vs
2
34 ITD1 VOD
5
67 Open 0.047
F
8 Vs
0.047 vos
F
F
VI
0.047
F
4
5
6
VR IN GND OD Sc NR Os Vs 1 100 VI VOD ITD2 2 3 4 5 67 Open 0.047
F
VR IN GND OD Sc NR Os Vs 1 2 3 4567 Open Open 3K 0.047 Vsc
F
VR IN GND OD Sc NR Os Vs Is 1 100 0.047
F
8 Vs
8
2
3
Open 0.047
F
Vos
4567 Open Open 3K Vos 0.047
F
" ON"
8 Vs
VI
Vsc
0.047
0.047
F
F
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
F
VR IN GND OD Sc NR Os Vs 1 100 0.047
F
2
3
4567 Open Open Vos
8 Vs
2
3
0.047
VI
4567 Open Open IosL VosL 0.047
F
8 Vs
2
3
4567 Open Open 0.047
F
8 Vs
IIC VIC
0.047
F
F
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 4567 Open Open 0.047
F
VR IN GND OD Sc NR Os Vs Ism Vsm 1 100 VI 2 3 4 5 678 Open Vos
8
0.047
F
Is2 0.047 0.047 IGT 0.047
F F F
13
14
VR IN GND OD Sc NR Os Vs 1 100 VI
F
VR IN GND OD Sc NR Os Vs Vs
"OFF"
2
3
4
5
67 Open
8
1 100
2
3
4
5
67 Open
8 Vs
0.047 0.047 Vos 0.047
F F
VI
0.047 0.047
F F
0.047
F
Note: The unit of resistance is ohm. Please insurt 0.01 F 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( 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 VsV
Reference voltage vs.supply voltage 2.5 Ta=75 Reference voltage VR V 25 Bias current IINnA 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 vsambient 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 ODV 2.5 Timed current 1 ITD1 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-VINmV
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 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 100 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=0.047 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 1F) and C2 less than 1F ZCT and load resistance RL of ZCT are . connected between input pin 1 and 2. In this case protective resistance Rp=100must be insurted. Sensitivity current is regulated by RL, and output of amplifier shows in pin 4. External capacitor C1 between pin 4 and GND is used for noise removal. When large current is grounded in the primary side AC line ZCT, the wave form in the secondary side of ZCT of is distorted and some signals does not appear in the output of amplifier. So please connect a varistor or a diode 2 pcsto 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 1.1VTyp.latch circuit operate and supply gate current in the gate of SCR connected to the output pin 7. Pin 6 can be used in the open statebut please connect capacitorabout 0.047F between pin 6 and pin 7. Capacitor C6 between pin 1 and GND is used to remove noise and is about 0.047F.
UTC assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all UTC products described or contained herein. UTC products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice.
UTC
UNISONIC TECHNOLOGIES CO., LTD.
9
QW-R122-001,B

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