Three-Phase Buck PWM Controller With High Current Integrated MOSFET Drivers

The ISL8103 is a three-phase PWM control IC with integrated MOSFET drivers. It provides a precision voltage regulation system for multiple applications including, but not limited to, high current low voltage point-of-load converters, embedded applications and other general purpose low voltage medium to high current applications.The integration of Power MOSFET drivers into the controller IC marks a departure from the separate PWM Controller and driver configuration of previous multi-phase product families. By reducing the number of external parts, this integration allows for a cost and space saving Power Management solution.
Output voltage CAN be programmed using the on-chip DAC or an external precision reference. A two bit code programs the DAC reference to one of 4 possible values (0.6V, 0.9V, 1.2V and 1.5V). A unity gain, Differential Amplifier is provided for remote voltage sensing, compensating for any potential difference between remote and local grounds. The output voltage CAN also be offset through the use of single external resistor. An optional droop function is also implemented and CAN be disabled for applications having less stringent output voltage variation requirements or experiencing less severe step loads.
A unique feature of the ISL8103 is the combined use of both DCR and rDS(ON) current sensing. Load line voltage positioning and overcurrent protection are accomplished through continuous inductor DCR current sensing, while rDS(ON) current sensing is used for accurate channel-current balance. Using both methods of current sampling utilizes the best advantages of each technique.
Protection features of this controller IC include a set of sophisticated overvoltage and overcurrent protection. Overvoltage results in the converter turning the lower MOSFETs ON to clamp the rising output voltage and protect the load. An OVP output is also provided to drive an optional crowbar device. The overcurrent protection level is set through a single external resistor. Other protection features include protection against an open circuit on the remote sensing inputs. Combined, these features provide advanced protection for the output load.
By Intersil Corporation
ISL8103 's PackagesISL8103 's pdf datasheet

ISL8103 Pinout, Pinouts
ISL8103 pinout,Pin out
This is one package pinout of ISL8103,If you need more pinouts please download ISL8103's pdf datasheet.

ISL8103 Application circuits
ISL8103 circuits
This is one application circuit of ISL8103,If you need more circuits,please download ISL8103's pdf datasheet.

Related Electronics Part Number

Related Keywords:

ISL8103 Pb-Free ISL8103 Cross Reference ISL8103 Schematic ISL8103 Distributor
ISL8103 Application Notes ISL8103 RoHS ISL8103 Circuits ISL8103 footprint