Renesas Electronics Corporation DC DC Switching Controllers ISL78224ANZ-T

The ISL78224ANZ-T is a 4-phase, bidirectional synchronous PWM controller designed for power conversion between 12V and 48V buses, capable of handling up to 3kW with greater than 95% efficiency. This controller supports both Buck and Boost configurations, allowing for a compact design with fewer components. Its multiphase architecture utilizes interleaved timing to reduce input and output ripple, which minimizes the need for additional capacitors and lowers overall component costs. The device features a master/slave architecture that allows for scalability by enabling multiple ISL78224 controllers to operate in parallel. It includes a dual-output Flyback controller that provides a 12V supply for FET drivers and a 6V supply for the controller itself, along with a 200mA auxiliary linear regulator for microcontrollers or interface devices. The PMBus interface facilitates system control and diagnostics, supporting programmable operating modes, voltage and current limits, and fault response mechanisms. Applications for the ISL78224ANZ-T include automotive bidirectional DC/DC converters, smart grid systems, and backup battery converters. The product is housed in a 64-lead TQFP package with an exposed pad for thermal management and is rated for operation in a temperature range of -40 to +125 degrees Celsius.