DATASHEET Dual Phase PMBusв„ў ChargeModeв„ў Control DC/DC
Digital Controller
ZL8801 Features The ZL8801 is a dual phase digital DC/DC controller. Up to four
ZL8801s (8 phases) can be operated in parallel to provide
additional output current. Unique compensation-free design – always stable The ZL8801 supports a wide range of output voltages
(0.54V to 5.5V) operating from input voltages as low as 4.5V
up to 14V.
With its fully digital ChargeModeв„ў Control loop the ZL8801
can respond to a transient load step within a single switching
cycle. This unique compensation-free modulation technique
allows designs to meet transient specifications with minimum
output capacitance, thus saving cost and board space.
Intersil’s proprietary single wire DDC (Digital-DC™) serial bus
enables the ZL8801 to communicate between other Intersil
digital power ICs. By using the DDC, the ZL8801 achieves
complex functions such as inter-IC phase current balancing,
sequencing and fault spreading, eliminating complicated
power supply managers with numerous external discrete
components.
The ZL8801 features cycle-by-cycle overcurrent protection and
protection for overvoltage, undervoltage, over-temperature and
MOSFET driver under and overvoltage protection. A snapshot
parametric capture feature allows users to take a snapshot of …