Unidirectional ACS758LCB-100U DC detection over current protection TOPUS

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Unidirectional ACS758LCB-100U
DC detection over current protection
（
DC current, current detection, over current protection function Rang:0A-100A
）
This module uses the following chip, the linearity is different, and the other principles can be used to measure DC current.
Unidirectional  DC current.
ACS758LCB-050U;  0A-50A     Linearity   K=60mV/1mA
；
ACS758LCB-100U;  0A-100A    Linearity   K=40mV/1mA
；
ACS770LCB-050U;  0A-50A     Linearity   K=80mV/1mA
；
ACS758LCB-100U;  0A-100A    Linearity   K=40mV/1mA
；
AC and DC current.
ACS758LCB-050B;  -50A-50A     Linearity   K=40mV/1mA
；
ACS758LCB-100B;  -100A-100A   Linearity   K=20mV/1mA
；
ACS758KCB-150B;  -150A-150A   Linearity   K=13.3mV/1mA
；
ACS758ECB-200B;  -200A-200A   Linearity   K=10mV/1mA
；
(1)Electrical parameters
DC power supply voltage: VCC:3.3V-5.5V or 7-28VDC   one of the two kinds of voltage is ok;
DC power supply current: 11-50mA;
Working temperature: -20 temperature to 85 temperature;
Isolation voltage: 1.5KV;
Detection current range: 0A-100A
Over current signal: 0.5-100A
Two types of output signals:
(1) Two types of output signal:
Analog output signal ---
Aout
: the signal is an analog voltage, followed by an op amp, and is suitable for direct connection to the A/D converter.
The signal of overcurrent ---
Dout
: if we need the overcurrent signal should be press the switch button, and connect the comparison circuit function; Aout>Vref---Dout will output 0V low level; Aout；
The benefits of this module are:
the response time of 120KHZ is fast;
the switch level switching is stable;
the over current signal setting can be set by adjustable resistance, and Com_Work1 is used as a critical point indicator.
high precision of current;
the use of copper connection nose, can be over 100A large current;
Application:
DC current detection;
motor plugging detection;
load device works detecting;
Plate size:
Board size: 7.2cm*4.8cm; optional 35mm Standard Guide.
Schematic diagram 3
We detailed the parameters for each model
(2) Over current signal---- Dout
If you use this function, please pay attention to pressing the button down.
How to set the reference voltage is appropriate:
Here we focus on how to set the reference voltage to compare with the actual voltage.
(1) Com_Work1 LED indicator lamp
When (set current)VrefWhen (set current)Vref>Aout1(actual current)   Com Work1 is on ; Dout=5V
(3) analog signal Aout
The ACS758LCB-100U linearity K:K=40mV/A, that mean the 1A current corresponds to the change of the 40mV voltage;
detect the current DC ia: 0A ~ 100A;
The output voltage formula: Aout=0.6+Ia*K=0.6+(0.04V*Ia)  Ia is the current flowing through the wire;
DC current:
We take the flow current over 1A as an example to show how much the output voltage According to the formula,
The
Current forward flow
The output voltage is Aout=0.6+Ia*K = 0.6+(0.04V*ia) =0.6+0.04;
The output voltage range is: 0.64V,Aout directly connected with the microcontroller AD port
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