3V To 20V, Two-Phase Buck PWM Controller With Integrated 4A MOSFET Drivers

The ISL8121 is a two-phase buck PWM Controller featuring an input voltage range of 3V to 20V and integrated MOSFET drivers. Precision voltage regulation is provided for point-of-load and other high-current applications that require efficient and compact implementation. Multiphase buck converter architecture uses interleaved Timing to multiply channel ripple frequency allowing smaller Filter inductors and reducing input and output ripple currents due to the ripple cancellation effect. Lower ripple results in fewer input and output capacitors. Smaller and low cost Transistors CAN be used resulting from the higher efficiency and reduced power dissipation.
The ISL8121 offers an internal 0.6V reference with a system regulation accuracy of 0.8% (Industrial Temperature range), an optional external reference input, and user-adjustable switching frequency. Unity gain Differential Amplifier targeted at remote voltage sensing capability enhances the regulation. A power good signal (PGD) is issued when the output voltage is within the regulated window. An internal Shunt Regulator with optional external connection capability extends the operational input voltage range. For applications requiring voltage tracking or sequencing, the ISL8121 offers a host of possibilities, including coincidental, ratiometric, or offset tracking, as well as sequential start-ups, user adjustable for a wide range of applications.
Additional features include overvoltage and overcurrent protection. Overcurrent protection CAN be tailored to various applications with no need for additional parts. The ISL8121 uses cost and space-saving rDS(ON) sensing for channel current balance, dynamic voltage positioning, and overcurrent protection. Channel current balancing is Automatic and accurate with the integrated current-balance control system.
By Intersil Corporation
ISL8121 's PackagesISL8121 's pdf datasheet
ISL8121IRZ QFN
ISL8121IRZ-T QFN




ISL8121 Pinout, Pinouts
ISL8121 pinout,Pin out
This is one package pinout of ISL8121,If you need more pinouts please download ISL8121's pdf datasheet.

ISL8121 Application circuits
ISL8121 circuits
This is one application circuit of ISL8121,If you need more circuits,please download ISL8121's pdf datasheet.


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