ANALOG DEVICES LT4320IDD-1#PBF

LT4320-1 is an ideal diode bridge controllers that drive four N-channel MOSFETs. By maximizing available voltage and reducing power dissipation (see thermograph comparison below), the ideal diode bridge simplifies power supply design and reduces power supply cost, especially in low voltage applications. An ideal diode bridge also eliminates thermal design problems, costly heat sinks, and greatly reduces PC board area. The LT4320’s internal charge pump supports an all NMOS design, which eliminates larger and more costly PMOS switches. If the power source fails or is shorted, a fast turn-off minimizes reverse current transients. The LT4320-1 is designed for DC to 600Hz typical voltage rectification. Higher frequencies of operation are possible depending on MOSFET size and operating load current. Typical applications include security cameras, airborne power distribution systems, PoE powered device with a secondary input, polarity-agnostic power input and diode bridge replacement.