MITSUBISHI M54123L

MITSUBISHI <CONTROL / DRIVER IC>
M54123L
EARTH LEAKAGE CURRENT DETECTOR
The M54123L is a semiconductor integrated circuit with amplifier
for a high-speed earth leakage circuit breaker.
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.
● High mounting density by SIL package with 8 pins
● Wide temperature range (Ta = -20 – +80°C)
PIN CONFIGURATION (TOP VIEW)
Reference voltage
VR →
1
Input
IN →
2
GND
3
Differential amplifier output
OD ←
4
Latch input
SC →
5
Terminal for noise absorption
NR →
6
Output
OS ←
7
VS
8
APPLICATION
BIAS
DESCRIPTION
AMP
LATCH
High speed earth leakage circuit breaker
REG
FUNCTION
The 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 zerocurrent 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.
Outline 8P5
BLOCK DIAGRAM
Latch circuit
Reference voltage generator
VS 8
AMP
7
GND 3
1
2
4
5
6
VR
Reference
voltage
IN
Input
OD
Differential
amplifier
output
SC
Latch
input
NR
Terminal for noise
absorption
OS output
MITSUBISHI <CONTROL / DRIVER IC>
M54123L
EARTH LEAKAGE CURRENT DETECTOR
ABSOLUTE MAXIMUM RATINGS (Ta = -20 – 80°C unless otherwise noted)
Parameter
Symbol
IS
Conditions
Supply current
IVR
VR pin current
IIN
IN terminal current
ISC
Pd
Topr
Tstg
SC terminal current
Power dissipation
Operating temperature
Storage temperature
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)
Ratings
Unit
8
250
30
-250
250
30
-250
5
mA
mA
mA
mA
mW
°C
°C
200
-20 – 80
-55 – 125
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 3 ) 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.
RECOMMENDED OPERATING CONDITIONS (Ta = -20 – 80°C unless otherwise noted)
Symbol
VS
CVS
COS
Parameter
Supply voltage when latch circuit is off-state
External capacitor between VS and GND
External capacitor between OS and GND
Min.
12
Limits
Typ.
Max.
1
1
Unit
V
µF
µF
ELECTRICAL CHARACTERISTICS (Ta = -20 – 80°C unless otherwise noted)
Symbol
Parameter
Temperature (°C)
Test
circuit
VS = 12V, VR-VI = 30mV
-20
25
80
4
Test conditions
Min.
Limits
Typ.∗
Unit
Max.
580
530
480
9
mVrms
IS1
Supply current
VT
Trip voltage
VS = 16V, VR-VI (Note 2)
-20 – +80
1
1
1
2
ITD1
Timed current 1
VS = 16V, VR-VI = 30mV,
VOD = 1.2V
25
3
-12
-30
µA
ITD2
Timed current 2
25
4
17
37
µA
IO
Output current
VSC “ON”
ISC “ON”
IOSL
VIC
VIDC
VSM
IS2
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)
-20
25
80
25
25
-200
-100
-75
0.7
-20 – +80
5
5
5
6
7
8
9
10
11
12
25
13
0.5
25
14
2
VS “OFF”
TON
Latch circuit is off-state supply
voltage (Note 6)
Operating time (Note 7)
VS = 16V, short circuit between
VR and VI, VOD = 0.8V
IS1 = 580µA
VSC = 1.4V
IS1 = 530µA
VOS = 0.8V
IS1 = 480µA
VS = 16V
VS = 12V
VS = 12V, VOSL = 0.2V
VS = 12V, IIC = 20mA
IIDC = 100mA
ISM = 7mA
VR-VI VOS = 0.6V (Note 5)
VS = 16V, VR-VI = 0.3V
-20 – +80
-20 – +80
-20 – +80
25
400
200
4.3
0.4
20
6.1
µA
µA
1.4
5
6.7
2
28
900
V
µA
µA
V
V
V
µA
V
4
ms
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 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.
MITSUBISHI <CONTROL / DRIVER IC>
M54123L
EARTH LEAKAGE CURRENT DETECTOR
TEST CIRCUIT
1
2
VR IN GND OD SC NR OS VS
1
2
3
4
5
100
VI
6
7
8
3
VR IN GND OD SC NR OS VS
IS
Open
VS
0.047
µF
0.047
µF
4
1
2
3
4
5
7
8 VS
VI
0.047 VOS
µF
1
2
3
4
5
6
7
0.047
µF
0.047
µF
1
2
3
Open
VI
VOD
ITD2
4
7
5
Open
3k
0.047
µF
0.047
µF
6
7
Open
IO
VSC
1
2
3
4
5
Open
100
8
IS
VI
6
7
8 VS
0.047
µF
1
0.047
µF
10
2
3
4
5
Open
2
3
4
5
6
7
6
7
3
4
5
Open
6
7
8 VS
Open
3k VOS
0.047
µF
VI
8 VS
1
2
3
0.047
µF
0.047
VSC
µF
“ON”
IIC
4
5
Open
100
VOSL
0.047
µF
2
3
VIDC
4
5
Open
100
6
7
8 VS
Open
0.047
µF
VIC
0.047
µF
6
7
0.047
µF
VR IN GND OD SC NR OS VS
8
1
2
ISM
Open
VSM
0.047
µF
VI
13
0.047
µF
12
1
Open
IIDC
8 VS
VR IN GND OD SC NR OS VS
VR IN GND OD SC NR OS VS
8
2
0.047
µF
11
1
7
0.047
µF
VOD
100
VOS
0.047
µF
Open
IOSL
VI
VR IN GND OD SC NR OS VS
6
Open
9
100
ISC “ON”
1
VR IN GND OD SC NR OS VS
Open
VOS
5
VR IN GND OD SC NR OS VS
8
VR IN GND OD SC NR OS VS
4
ITD1
6
Open
100
3
VI
VR IN GND OD SC NR OS VS
8 VS
2
100
5
VR IN GND OD SC NR OS VS
1
Open
100
1k
Vrms
6
VR IN GND OD SC NR OS VS
0.047
µF
3
4
5
6
Open
100
VI
7
8
VOS
0.047 0.047 IGT
µF
µF
IS2
0.047
µF
14
VR IN GND OD SC NR OS VS
1
2
3
4
5
6
Open
100
VI
7
VR IN GND OD SC NR OS VS
8 VS
“OFF”
0.047 0.047 VOS 0.047
µF
µF
µF
1
2
3
4
5
6
7
8 VS
Open
100
VI
0.047 0.047
µF
µF
0.047
µF
Note: The unit of resistance is ohm.
Please insurt 0.01µF between
pin 1 and pin 3 in test.
MITSUBISHI <CONTROL / DRIVER IC>
M54123L
EARTH LEAKAGE CURRENT DETECTOR
TYPICAL CHARACTERISTICS
VCC voltage vs. supply voltage
Supply current 1 vs. supply voltage
12
700
Ta = -25°C
Supply current 1 IS1 (µA)
VCC voltage VCC (V)
10
25°C
8
75°C
6
4
2
0
600
500
Ta = -25°C
400
25°C
75°C
300
200
100
8
10
12
14
16
18
0
20
5
Supply voltage VS (V)
10
15
20
25
30
Supply voltage VS (V)
VCC voltage generates by the constant voltage circuit in IC.
This is measured not by M54122L but by a special element.
Reference voltage vs. supply voltage
Bias current vs. ambient temperature
2.5
1000
2.0
900
800
25°C
-25°C
Bias current IIN (nA)
Reference voltage VR (V)
Ta = 75°C
1.5
1.0
700
600
500
400
300
200
0.5
100
0
4
8
12
16
0
-40
20
-20
0
20
40
60
80
Supply voltage VS (V)
Ambient temperature Ta (°C)
Differential amplifier output voltage
vs. differential input voltage
Timing current vs. ambient
temperature
100
-50
2.5
Timed current 1 ITD1 (µA)
Differential amplifier output voltage VOD (V)
0
2
1.5
1
Ta = 75°C
0.5
25°C
-25°C
0
5
6
7
8
9
10
Differential input voltage ∆VI = VR – VIN (mV)
-40
-30
-20
-10
0
-40
-20
0
20
40
60
80
Ambient temperature Ta (°C)
100
MITSUBISHI <CONTROL / DRIVER IC>
M54123L
EARTH LEAKAGE CURRENT DETECTOR
OS voltage vs. SC voltage
Operating time vs. ambient temperature
4.5
6
Ta =
75°C
25°C
Operating time TON (ms)
OS voltage VOS (V)
8
-25°C
4
2
0
0.4
0.6
0.8
1
1.2
1.4
1.6
4
3.5
3
2.5
2
-50
1.8
SC voltage VSC (V)
-25
0
25
50
75
100
Ambient temperature Ta (°C)
Trip voltage vs. ambient temperature
Output current vs. OS output voltage
-400
10
Trip voltage VT (mVrms)
Output current IO (µA)
Ta = -25°C
-300
25°C
-200
75°C
-100
0
0
1
2
3
4
5
OS output voltage VOS (V)
6
7
8
6
4
2
0
-50
-25
0
25
50
75
Ambient temperature Ta (°C)
100
MITSUBISHI <CONTROL / DRIVER IC>
M54123L
EARTH LEAKAGE CURRENT DETECTOR
APPLICATION EXAMPLE
• HIGH-SPEED LEAKAGE CIRCUIT BREAKER WITH M54123L
Supply voltage circuit
Amplifier
Output circuit
M54123L
Trip
coil
AC
line
R2 VS
8
C4
Voltage
regulator
Reference
voltage
generator
Latch
circuit
AMP
3
GND
1
2
RL
4
5
RP
100Ω
6
7
C3
C1
C6
C2
AC
line
R1
Note 8
SCR
CR2AM
CR03AM
CR02AM
C5
Note 9
ZCT
Note 8 : Gate current must be selected.
Please select voltage resistance by AC supply voltage.
9 : MZ Core Series by Soryo Denshi Kagaku Co., Ltd (Mitsubishi Subsidiary)
Tel. +81-427-74-7813
Operating time vs. input voltage
1000
700
500
300
Operating time tD (ms)
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 (less than
1µF). ZCT and load resistance R L of ZCT are connected between
input pin 1 and 2 . In this case protective resistance (RP = 100Ω)
must be insurted. Sensitivity current is regulated by RL, and output
of amplifier shows in pin 4 . External capacitor C1 between pin 44
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 7 .
Pin 6 can be used in the open state, but please connect capacitor
(about 0.047µF) between pin 6 and pin 7 .
Capacitor C6 between pin 1 and GND is used to remove noise and
is about 0.047µF.
C1 = 0.047µF
Ta = 25°C
60HZ
100
70
50
30
10
7
5
3
1
1
3 5 7 10
30 50 100
70
300
1000
500
Input voltage V1 (mVrms)