FAIRCHILD FOD852 4-Pin High Operating Temperature Photodarlington Optocoupler handbook

The FOD8320 is a high noise immunity, 2.5A output current optocoupler. It features Fairchild's Optoplanar® packaging technology, providing reliable and high voltage insulation with greater than 10mm creepage and clearance distance, and 0.5mm internal insulation distance while still offering a compact footprint. The output stage utilizes P-Channel MOSFETs, enabling output voltage swing close to the supply rail. It offers a minimum common mode rejection of 35kV/µs, a wide supply voltage range from 15V to 30V, fast switching speed over the full operating temperature range, under voltage lockout (UVLO) with hysteresis, extended industrial temperature range from -40 to 100°C, and safety and regulatory approvals such as UL1577 and DIN EN/IEC60747-5-5. It is suitable for applications such as AC and brushless DC motor drives, industrial inverters, uninterruptible power supplies, induction heating, and isolated IGBT/power MOSFET gate drive.


FAIRCHILD FOD852 4-Pin High Operating Temperature Photodarlington Optocoupler handbook - cover page
Brand
Fairchild
Category
Other Electronics
Document type
Datasheet
Language
English
Pages
19
File format
PDF
File size
2 MB
Published
01 August, 2012
Updated
29 September, 2023
Model
FOD852
MD5 checksum
02ED3E5FE0EE6DCB53CB3FAE1CE251DE

About this manual

The FOD8321 is a high-speed gate drive optocoupler utilizing Fairchild's Optoplanar packaging technology to provide reliable insulation with greater than 8mm creepage and clearance distance. It features a P-Channel MOSFET output stage capable of driving up to 2.5A, enabling voltage swings close to the supply rail for efficient medium power IGBT/MOSFET control.

What's inside

  • Features
  • Applications
  • Description
  • Functional Schematic
  • Truth Table
  • Pin Definitions
  • Safety and Insulation Ratings
  • Absolute Maximum Ratings
  • Electrical Characteristics
  • Switching Characteristics

Specifications

Output Current2.5A
Operating Temperature Range-40 to 100°C
Supply Voltage Range15V to 30V
Propagation Delay (Max)500ns
Pulse Width Distortion (Max)300ns
Common Mode Rejection Rate20kV/us Minimum
Insulation Thickness0.5 mm

Frequently asked questions

What are the primary applications for the FOD8321?

The device is suited for AC and brushless DC motor drives, industrial inverters, uninterruptible power supplies, induction heating, and isolated IGBT/Power MOSFET gate drive.

What is the maximum output current capability?

The FOD8321 has a 2.5A output current driving capability for medium power IGBT/MOSFETs.

Does the device include Under Voltage Lockout (UVLO)?

Yes, it includes UVLO with hysteresis to protect the circuit during low supply voltage conditions.

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