LT4322 - Analog Devices

LT4322 High-Voltage Active Rectifier Controller

The LT4322 is a floating active rectifier controller that drives an external N-Channel MOSFET to replace a rectifier diode. It is designed primarily for AC applications and operates with input supply frequencies ranging from DC to 100kHz. On each cycle of the input AC waveform, an external N-Channel MOSFET gate is enhanced to provide the equivalent of a low .

Features

 Replaces Rectifying Diodes with N-Channel MOSFETs in Rectifier Applications  Maximizes Power Efficiency, Eliminates Thermal Design Problems  Low 25mV Forward Voltage Drop  Wide Operating Voltage Range: 9V to >500V  Wide Operating Frequency Range: DC to 100kHz  Regulated 12V GATE Drive for External N-Channel MOSFET Enhancement  8-Lead MSOP and 8-Lead, 3mm x 3mm, Side Wettable DFN Packages APPLICATIONS  Single-Phase, 3-Phase, and 6-Phase Bridge Rectifiers  Automotive Alternator Bridge Rectifiers  Off-Line Active Bridge Rectifier  3-Phase Aircraft Power  High-Voltage DC Diode-OR with.