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Functionality Overview:
The ACPL-247-500E enables transmission of information between two circuits without a direct electrical connection, ensuring that potential electrical faults in one section don't affect the other.
Application Domains:
1. Switching power supplies.
2. Motor controllers.
3. Industrial data acquisition systems.
4. Communication interfaces where isolation is essential, such as RS232, RS485.
5. Digital isolation for A/D, D/A conversion.
Key Characteristics:
- Isolation Voltage: The maximum voltage the optocoupler can withstand without breakdown.
- Transfer Rate: How swiftly it can transmit data between the input and output.
- Current Transfer Ratio (CTR): efficiency is indicated by the ratio of output current to input current.
- Response Time: The duration taken for the output to respond after receiving an input signal.
Circuit Integration (Using a Motor Controller as an Example):
1. Input Side Connection: The ACPL-247-500E has an LED as its input. The microcontroller's PWM (Pulse Width Modulation) output should be linked to the LED's anode, and a current-limiting resistor should connect the LED's cathode to ground.
2. Output Side Connection: The output side has a phototransistor. Connect the collector of this transistor to the Vcc (positive supply voltage). The emitter connects to the gate of a MOSFET or IGBT, which then drives the motor.
3. Power Supply: Ensure separate power supplies for both input and output sides to maintain isolation. These power sources must remain within the recommended operating voltage of the ACPL-247-500E.
4. Grounding: It's paramount to keep the grounds of the input and output circuits isolated from each other to maintain the protective function of the optocoupler.
Design Consideration Checklist:
- Current Limitation: Choose an apt current-limiting resistor for the input LED to prevent potential damage while ensuring efficient signal transmission.
- Optocoupler Positioning: Place the ACPL-247-500E as close as feasible to the microcontroller's PWM output and the MOSFET's gate to minimize the effects of external noise.
- Bypass Capacitors: Incorporate a bypass capacitor near the Vcc pin to curb high-frequency noise.
- Safety Margins: Always operate the ACPL-247-500E well below its maximum ratings to ensure long-term reliability.
By judiciously embedding the ACPL-247-500E in motor control systems or similar applications, one can guarantee the system's resilience against potential electrical faults while preserving precise command transmission.
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All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment. If there is something wrong with the ACPL-247-500E we delivered, we will accept the replacement or return of the ACPL-247-500E only when all of the below conditions are fulfilled:
(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.
(2)We are informed of the defect described above within 90 days after the delivery of ACPL-247-500E.
(3)The PartNo is unused and only in the original unpacked packaging.
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(1)Inform us within 90 days
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