Unitrode UC3726
The UC1726 Isolated Drive Transmitter, and its companion chip, the UC1727 Isolated High Side IGBT Driver, provide a unique solution to driving isolated power IGBTs. They are particularly suited to drive the high side devices on a high voltage H-bridge.| Part No. | UC3726 |
|---|---|
| Datasheet | UC3726 Download |
| Manufacturer |  Unitrode |
| Description | Isolated Drive Transmitter |
| Buy | Stock & Price |
FEATURES
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● 750mA Output Drive, Source or Sink 8 to 35V Operation Transmits Drive Logic and Power through Low Cost Transformer Programmable Operating Frequency Up to 750kHz Operation Improved Output Control Algorithm Minimizes Output Jitter Fault Logic Monitors Isolated High Side IGBT Driver UC1727 for Faults User Programmable Fault Timing Screens False Fault Signals Shutdown Mode Disables On Chip Logic Reference for Low Standby Power Optional External Biasing of Logic Circuitry can Reduce Overall Power Dissipation
DESCRIPTION
The UC1726 device transmits the drive logic and drive power, along with transferring and receiving fault information with the isolated gate circuit using a low cost pulse transformer. This drive system utilizes a duty cycle modulation technique that gives instantaneous response to the drive control transitions, and reliably passes steady state, or DC conditions. High frequency operation, up to 750kHz, allows the cost and size of the coupling transformer to be minimized.
