Mitsubishi M54128L Datasheet
MITSUBISHI <CONTROL / DRIVER IC>
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M54128L/FP
EARTH LEAKAGE CURRENT DETECTOR
DESCRIPTION
The M54128 is a semiconductor integrated circuit designed for
high-speed type earth leakage breakers. This lC includes leakage
and abnormal voltage detecting functions.
FEATURES
● lmprovement of ability against unwanted tripping due to Iightning
-surge.
• Adopt the two times counting system.
• lmprovement of ability against needless action due to lightningimpulse.
● lt is a possible that cope with lEC owing to mode change.
• Adopt the 1.5 times counting system.
● High input impedance :
• Filter circuit can be formed with externally attached C/R.
• lmprovement of ability against needless action due to high
frequency and high harmonics.
● High input sensitivity : VT = 6.5mVrms
● Abnormal voltage detecting (neutral conductor open-phase
protection) function :
• Neutral conductor open-phase protection at single-phase threewire system
• ln case of no use this function, stop this function and reduction
of circuit current, possible.
● Low voltage operation : 7 to12V (conventional Mitsubishi
lCs : 12 to 20V)
● Low current dissipation :
• In stand-by condition : 820µA typical (Vs = 9V, Ta = 25°C)
• When SCR is ON : 740µA typical (Vs = 9V, Ta = 25°C)
● Highly stable design : Employment of circuits of which
characteristics fluctuations resulting from changes in supply
voltage/ambient temperature are small.
APPLICATION
Earth leakage breaker
RECOMMENDED OPERATING CONDITIONS
Supply voltage range • • • • • • • • • • • • • • •• • • • • • • • • • • • • • • • • • • • • • • • • • • 7 to12V
Operating ambient temperature• • • • • • • • • • • • • • • • • • • • • • • • -20 to +85°C
PIN CONFIGURATION (TOP VIEW)
M54128FP
M54128L
14
VS
13
VCC
12
PSAV
11
IBLI
105
TTDC
96
OFFC
87
SCRT
1
GND
2
REF
I
3
VREF
4
ILKI
TRC1
TRC2
PSEL
Outline 14P2N-A
1
SCRT
2
OFFC
3
TTDC
4
IBLI
5
PSAV
VCC
6
7
VS
8
GND
9
REF
I
10
VREF
11
ILKI
12
TRC1
13
TRC2
14
PSEL
Outline 14P5A
BLOCK DIAGRAM
VS VCC PSAV IBLI TTDC OFFC SCRT
Power suppl
Abnormal voltage
detection
circuit
Leakage detection
SCR-driver
PSELTRC2TRC1ILKIVREFIREFGND
MITSUBISHI <CONTROL / DRIVER IC>
PIN FUNCTION DESCRIPTION
M54128L/FP
EARTH LEAKAGE CURRENT DETECTOR
Pin No.
LFP
Pin name
Common
7
6
9
8
5
14
VS
13
VCC
2
IREF
1
GND
12
PSAV
Power supply
Output pin of internal constant-voltage circuit. Connects to capacitor for decoupling.
Connects to resistor which sets constant current of each internal circuit. Approx. 1.3V.
Grounding
When in normal use, connect the pin to V
ground the pin. Circuit current can be reduced. Ground IBLI pin and TTDC pin also.
Leakage detection, abnormal voltage detection, SCR drive circuits
10
3
11
VREF
4
12
13
ILKI
5
TRC1
6
TRC2
Input reference level pin of the leakage detection circuit. Approx. 2.7V.
Another input pin of the leakage detection circuit.
Connects to capacitor for integrating output signals of the leakage input signal level discriminator.
Connects to condeser for removing noise.
Logic function switching pin used when detecting leakage.
14
7
PSEL
When the pin is grounded, S
negative input.
When it is connected to VCC pin, SCRT operates with the logic flow of negative input → positive input.
CRT operates with the logic flow of negative input → positive input →
This IC will be restored to the initial condition after the specified period if :
2
9
OFFC
leakage input signal does not continue ; abnormal voltage input signal does not continue ; or
leakage/abnormal voltage is detected and SCR becomes ON.
The pin connects to capacitor for time settinng of this function.
4
3
1
11
IBLI
10
TTDC
8
SCRT
Input pin of the abnormal voltage detection circuit.
Connects to capacitor for time setting of the abnormal voltage detection circuit.
Output pin for drive a SCR.
Function
CC pin. When the abnormal voltage detection function is not in use,
I/O EQUIVALENT CIRCUIT
)
µ
µ
VS
200
MITSUBISHI <CONTROL / DRIVER IC>
M54128L/FP
EARTH LEAKAGE CURRENT DETECTOR
V
CC
11-stages
VCC
2.5V
BAND GAP
10
A
1.3V
100
IREF
External R (130k
10µA
VREF
ILKI
2.7V
150
6-stages
500
350
A
8
100
I
VCC
BLI
2k
7-stages
TRC1
TRC2
2.5V
OFFC
200k
3k
50k
800
TDC
T
CRT
S
2k
P
SAV PSEL
2k
MITSUBISHI <CONTROL / DRIVER IC>
g
EARTH LEAKAGE CURRENT DETECTOR
ABSOLUTE MAXIMUM RATINGS (Ta = 25°C, unless otherwise noted)
Symbol ConditionsParameter
S
I
V
S MAX
∆VIL
IIL
IIG
VIBL
IIBL
Pd
Topr
Tst
Source current
Max. supply voltage
Input voltage
Input current
Input current
Input voltage
Input current
Power dissipation
Operating temperature
Storage temperature
ILKI - VREF
ILKI - VREF
VREF - GND
I
BLI - GND
I
BLI - GND
TYPICAL CHARACTERISTICS
M54128L/FP
Ratings Unit
4
15
-1.4 to +1.4
-5 to +5
10
-0.3 to +4.0
4
200
-20 to 85
-55 to125
mA
V
V
mA
mA
V
mA
mW
°C
°C
Thermal derating
250
200
150
100
50
Power dissipation Pd (mW)
0
0 25 50 75 100 125 150
Ambient temperature Ta (°C)
MITSUBISHI <CONTROL / DRIVER IC>
µ
µ
µ
µ
µ
µ
µ
µ
µ
µ
EARTH LEAKAGE CURRENT DETECTOR
ELECTRICAL CHARACTERISTICS (Ta = 25°C, unless otherwise noted)
Symbol
S0
I
IS1
IS2
IS3
IS0'
IS1'
IS3'
–
VS max
Vion
IIH
VO
VILKI
VRCL
EIOH
VTH
ETW1
–
E
IOH
VTH
ETW2
–
VT
–
VBLT
–
–
IIBLT
VIBLC
EIOH
VTH
ETW4
EIOH
VTH
ETW3
VOL8
IOHc
IOHn
IOHh
Vsoff
Source current: In stand-by condition
Source current: While detecting leakage
Source current: While detecting abnormal voltage
Source current: Immediately after driving of SCR
Source current: In stand-by condition
Source current: While detecting leakage
Source current: Immediately after driving of SCR
Power supply circuit
I
SO variation with ambient temperature
Maximum current voltage
Leakage detecting DC input voltage
ILKI pin input bias current
V
REF pin output voltage
circuit
Leakage
ILKI-V
detection
V
REF-GND clamp voltage
TRC1 pin “H” output current precision
TRC1 threshold voltage
2ms
T
W1 pulse width precision
circuit
T
W1 variation with ambient temperature
TRC2 pin “H” output current precision
TRC2 threshold voltage
1ms
T
W2 pulse width precision
circuit
T
W2 variation with ambient temperature
Total leakage detecting AC voltage
V
T variation with ambient temperature
Abnormal voltage detecting voltage
BLT variation with supply voltage
V
V
BLT variation with ambient temperature
IBLI pin input bias current
IBLI-GND clamp voltage
TTDC pin “H” output current precision
Abnormal voltage
detecting circuit
TTDC threshold voltage
Delay time pulse width precision
OFFC pin “H” output current precision
OFFC threshold voltage
Reset
circuit
Reset timer pulse width precision
SCRT pin “L” output voltage
SCRT pin “H” output current
circuit
SCR drive
I
OH holding supply voltage
Parameter
REF input clamp voltage
Test conditions
V
S
PSAV = VCC
9V
PSAV = GND
9V
Ta = -20 to 85°C
9V
I
S = 4mA
–
I
LKI -VREF
VIN = VREF
9V
IILKI = ±3mA
I
RCL = 5mA
V
O = 0V : IOH = -10.4µA
9V
C = 0.01µF : T
Ta = -20 to 85°C
V
O = 0V : IOH = -10.4µA
9V
C=
0.0047µF:TW2=1.1ms
Ta = -20 to 85°C
60Hz
9V
Ta = 25 → 85°C
9V
Ta = 25 → -20°C
9V
–
Ta = -20 to 85°C
V
IN = VREF
9V
IIN = 1mA
V
O = 0V : IOH = -8µA
C = 1.0µF : T
V
O = 0V : IOH = -10µA
9V
C = 0.33µF : T
9V
I
OL = 200µA
9V
O = 0.8V
V
9V
W1 = 2.3ms
W4 = 300ms
W3 = 55ms
Ta = -20°C
Ta = 25°C
Ta = 85°C
M54128L/FP
Limits
Min. Typ. Max.
820 950570
840 950570
810 950570
740 870520
740 870520
760 870520
740 870520
-0.07 ––%/°C
13.9 15–V
±7.5 –– mVdc
215–nA
2.7 ––V
±1.2 ––V
4.6 ––V
–20-20 %
2.4 ––V
–15-15 %
-0.06 ––%/°C
–20-20 %
2.4 ––V
–15-15 %
-0.06 ––%/°C
6.5 –– mVrms
-4.0 ––%
-4.0 ––%
2.4 2.62.2 V
0.01 –– %/V
0.06 ––%/°C
120 300–nA
7.2 ––V
–20-20 %
2.4 ––V
–30-30 %
–20-20 %
2.4 ––V
–30-30 %
0.1 0.2–V
-260 –-200
-220 –-100
-180 –-70
– 3.0 4.5 V–
Unit
A
A
A
A
A
A
A
A
A
A
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