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Número de pieza | M54125L | |
Descripción | EARTH LEAKAGE CURRENT DETECTOR | |
Fabricantes | Mitsubishi | |
Logotipo | ||
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No Preview Available ! MITSUBISHI <CONTROL / DRIVER IC>
M54125L/P
EARTH LEAKAGE CURRENT DETECTOR
DESCRIPTION
The M54125 is a semiconductor integrated circuit consisting of an
amplifier for high-speed earth leakage circuit breaker.
FEATURES
q Satisfies JIS C 8371
q Temperature-stable input current trigger threshold (VLKT = 9mV)
q Capable of detecting a lost phase on the neutral line
q Economical, low external component count
q Highly resistant to noise and power surges
q Wide operating temperature range (Ta = -20 – +80°C)
APPLICATION
High-speed earth-leakage circuit breakers
FUNCTION
The M54125 is a semiconductor integrated circuit for use in the
amplifier section of earth-leakage circuit breakers. It consists of a
differential amplifier, one-shot circuit, output circuit, current
regulator, waveform regulator and delay circuit. The following
description refers to the block diagram, application example, and
operational waveforms.
PIN CONFIGURATION (TOP VIEW)
Capacitor MM →← 1
Output OUT ← 2
GND 3
NC 4
Capacitor CTD TD →← 5
NC 6
Capacitor CWF WF →← 7
Input IBL → 8
External resistor RX → 9
NC 10
NC 11
VS 12
Input ILK → 13
Bias voltage VB 14
Outline 14P5A
N.C: no connection
Input ILK → 1
Bias voltage VB 2
Capacitor MM →← 3
Output OUT ← 4
GND 5
10 VS
9 ← RX External resistor
8 ← IBL Input
7 →← WF Capacitor CWF
6 →← TD Capacitor CTD
Outline 10P2-C
BLOCK DIAGRAM (Note: Pin No. in parentheses are of M54125L)
VS
10
(12)
External
resistor
RX
9
(9)
Input
IBL
8
(8)
Capacitor CWF
WF
7
(7)
Capacitor CWF
TD
6
(5)
Voltage
regulator
Bias
current
source
Comparator
VBLT
Wave-
form
regulator
VCC
VB
A • VLKT
A
Amplifier
Comparator
One-shot
multi vibrator
(13) (14)
12
ILK
Input
VB
Bias
M54125L/P
(1)
3
MM
Capacitor
Delay
circuit
Output
circuit
(2)
4
OUT
Output
(3)
5
GND
1 page MITSUBISHI <CONTROL / DRIVER IC>
M54125L/P
EARTH LEAKAGE CURRENT DETECTOR
TEST CIRCUIT (CMM = 0.22µF, CTD = 6.8µF and RX = 27kΩ unless otherwise noted)
1 IS 1 and IS 2 Measurement
2 IS 3 and IS 4 Measurement
MD234 or
Equivalent
VOUT
∆VILK
ILK
CMM
VB
MM
OUT
GND
VS
VS A
RX IS 1, IS 2
IBL
WF
TD
VOUT
∆VILK
ILK
CMM
VB
MM
OUT
GND
VS
VS
RX
RX
IBL
CWF
WF
TD
CTD
A
IS 3, IS 4
VIBL
∗: IS 2 is the value after OUT turns on. (Vout > 0.5V)
3 VLKT
VOUT
VIBL
ILK
CMM
VB
MM
OUT
GND
VS
RX
IBL
WF
TD
VS
∗: IS 4 is the value after OUT turns on.
4 IMM+ and IMM- Measurement
∆VILK
ILK
VB
A
IMM+
IMM-
VMM
MM
OUT
GND
VS
RX
IBL
WF
TD
VS
∗: VLKT is the value of VIBL when OUT turns on as VIBL is
gradually increased.
5 IOU+, IOU- Measurement
IOU+
A
IOU-
VOUT
∆VILK
ILK
CMM
VB
MM
OUT
GND
VS
RX
IBL
WF
TD
VS
6 VSM Measurement
ILK
VB
MM
OUT
GND
VS
RX
+
IBL VSM V
-
WF
TD
IS
5 Page |
Páginas | Total 6 Páginas | |
PDF Descargar | [ Datasheet M54125L.PDF ] |
Número de pieza | Descripción | Fabricantes |
M54125L | EARTH LEAKAGE CURRENT DETECTOR | Mitsubishi |
M54125L | EARTH LEAKAGE CURRENT DETECTOR | Mitsubishi |
M54125P | EARTH LEAKAGE CURRENT DETECTOR | Mitsubishi |
M54125P | EARTH LEAKAGE CURRENT DETECTOR | Mitsubishi |
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