ADI expands dc/dc switching controller family
Following the recently introduced ADP1853, Analog Devices (ADI) has expanded its series of configurable controllers to include the ADP1851, which features voltage tracking and synchronisation capability.
The company says that the ADP1851/53 can be configured to work as voltage mode controllers with input feed forward, or as current mode controllers, depending on the application and customer preference. The devices are designed for high efficiency, high current, fast, transient point of load applications in a range of communications networking, industrial, medical, and consumer applications.
The ADP1851/53 can be connected in parallel to achieve higher current delivery—up to 50A depending on the external fets. The synchronisation input of the ADP1851 is said to eliminate troublesome 'beat' frequencies and reduce system input capacitance when multiple devices with phase shifted synchronisation are used.
The ADP1851 is available in a 16 lead LFCSP (4 x 4mm) package while the ADP1853 with clock out is available in a 24 lead (4 x 4mm) LFCSP package.
