NCP5424

The NCP5424 is a flexible dual N-channel synchronous buck controller utilizing V^2TM control for fast transient response and excellent line and load regulation. This highly versatile controller can be configured as a single two phase output converter that draws programmable amounts of current from two different input voltages or all current from one supply. The NCP5424 can also be configured as two independent out-of-phase controllers.

Using the NCP5424 in a current sharing input configuration is ideal for applications where more power is required than is available from one supply, such as video cards or other plug-in boards. When configured as a dual output controller, the output of one controller can be divided down and used as the reference for the second controller. This tracking capability is useful in applications such as Double Data Rate (DDR) Memory power where the termination voltage must track VDD.

The NCP5424 provides a cycle- to- cycle current limit on Controller 2 allowing the system to handle transient overcurrent events and a hiccup mode overcurrent protection on Controller 1 allowing lossless short circuit protection. In addition, the NCP5424 provides Soft Start, undervoltage lockout, and built-in adaptive FET nonoverlap time to prevent shoot through.