Features
• Dual Independent, Floating Outputs for Parallel,
Series, or Isolated Configurations
• 24.4V Open Circuit Voltage in Series Configuration
• 18.2A Short Circuit Current in Parallel Configuration
• 5mA Input Control Current
• Integrated Turn-Off Circuitry
• High Input to Output Isolation: 3750Vrms
• Replacement of Discrete Components
• No EMI/RFI Generation
• Surface Mount Tape & Reel Version Available

Applications
• MOSFET Driver
• Programmable Control
• Process Control
• Instrumentation
• Telecommunications
• Solid State Relays
• Isolated Switching
• Floating Power Supplies

Description
The FDA217 is a dual photovoltaic MOSFET driver.
Each independent driver consists of an LED that is
optically coupled to a photodiode array.
The driver output is controlled by means of the highly
effective infrared LED at the input. When input current
is applied to the LED, the emitted light activates the
photodiode array, which generates the voltage at the
output.
The photodiode array is capable of generating a
floating power source with voltage and current
sufficient to drive high-power MOSFET transistors.
Each photodiode array contains an integrated
turn-off circuit that discharges the external MOSFET
gate when LED current is removed. This eliminates
the need to use external components to facilitate the
discharge. The optically coupled technology provides
3750Vrms of input to output isolation.
The FDA217 is well suited for use in discrete solid
state relay designs and in other isolated switching
applications.